Initial file creation of code documentation READMEs

* add lazy type and apply to cache events

.bumpversion.cfg

@@ -1,23 +1,27 @@
 [bumpversion]
-current_version = 0.17.1
+current_version = 1.0.1
 parse = (?P<major>\d+)
 	\.(?P<minor>\d+)
 	\.(?P<patch>\d+)
-	((?P<prerelease>[a-z]+)(?P<num>\d+))?
+	((?P<prekind>a|b|rc)
+	(?P<pre>\d+)  # pre-release version num
+	)?
 serialize = 
-	{major}.{minor}.{patch}{prerelease}{num}
+	{major}.{minor}.{patch}{prekind}{pre}
 	{major}.{minor}.{patch}
 commit = False
 tag = False
 
-[bumpversion:part:prerelease]
+[bumpversion:part:prekind]
 first_value = a
+optional_value = final
 values = 
 	a
 	b
 	rc
+	final
 
-[bumpversion:part:num]
+[bumpversion:part:pre]
 first_value = 1
 
 [bumpversion:file:setup.py]
@@ -26,19 +30,8 @@ first_value = 1
 
 [bumpversion:file:core/dbt/version.py]
 
+[bumpversion:file:core/scripts/create_adapter_plugins.py]
+
 [bumpversion:file:plugins/postgres/setup.py]
 
-[bumpversion:file:plugins/redshift/setup.py]
-
-[bumpversion:file:plugins/snowflake/setup.py]
-
-[bumpversion:file:plugins/bigquery/setup.py]
-
 [bumpversion:file:plugins/postgres/dbt/adapters/postgres/__version__.py]
-
-[bumpversion:file:plugins/redshift/dbt/adapters/redshift/__version__.py]
-
-[bumpversion:file:plugins/snowflake/dbt/adapters/snowflake/__version__.py]
-
-[bumpversion:file:plugins/bigquery/dbt/adapters/bigquery/__version__.py]
-

.circleci/config.yml

@@ -1,173 +0,0 @@
-version: 2.1
-jobs:
-  unit:
-    docker: &test_only
-      - image: fishtownanalytics/test-container:7
-        environment:
-          DBT_INVOCATION_ENV: circle
-    steps:
-      - checkout
-      - run: tox -e flake8,mypy,unit-py36,unit-py38
-  build-wheels:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Build wheels
-          command: |
-            python3.8 -m venv "${PYTHON_ENV}"
-            export PYTHON_BIN="${PYTHON_ENV}/bin/python"
-            $PYTHON_BIN -m pip install -U pip setuptools
-            $PYTHON_BIN -m pip install -r requirements.txt
-            $PYTHON_BIN -m pip install -r dev_requirements.txt
-            /bin/bash ./scripts/build-wheels.sh
-            $PYTHON_BIN ./scripts/collect-dbt-contexts.py > ./dist/context_metadata.json
-            $PYTHON_BIN ./scripts/collect-artifact-schema.py > ./dist/artifact_schemas.json
-          environment:
-            PYTHON_ENV: /home/tox/build_venv/
-      - store_artifacts:
-          path: ./dist
-          destination: dist
-  integration-postgres-py36:
-    docker: &test_and_postgres
-      - image: fishtownanalytics/test-container:7
-        environment:
-          DBT_INVOCATION_ENV: circle
-      - image: postgres
-        name: database
-        environment: &pgenv
-          POSTGRES_USER: "root"
-          POSTGRES_PASSWORD: "password"
-          POSTGRES_DB: "dbt"
-    steps:
-      - checkout
-      - run: &setupdb
-          name: Setup postgres
-          command: bash test/setup_db.sh
-          environment:
-            PGHOST: database
-            PGUSER: root
-            PGPASSWORD: password
-            PGDATABASE: postgres
-      - run:
-          name: Run tests
-          command: tox -e integration-postgres-py36
-      - store_artifacts:
-          path: ./logs
-  integration-snowflake-py36:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Run tests
-          command: tox -e integration-snowflake-py36
-          no_output_timeout: 1h
-      - store_artifacts:
-          path: ./logs
-  integration-redshift-py36:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Run tests
-          command: tox -e integration-redshift-py36
-      - store_artifacts:
-          path: ./logs
-  integration-bigquery-py36:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Run tests
-          command: tox -e integration-bigquery-py36
-      - store_artifacts:
-          path: ./logs
-  integration-postgres-py38:
-    docker: *test_and_postgres
-    steps:
-      - checkout
-      - run: *setupdb
-      - run:
-          name: Run tests
-          command: tox -e integration-postgres-py38
-      - store_artifacts:
-          path: ./logs
-  integration-snowflake-py38:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Run tests
-          command: tox -e integration-snowflake-py38
-          no_output_timeout: 1h
-      - store_artifacts:
-          path: ./logs
-  integration-redshift-py38:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Run tests
-          command: tox -e integration-redshift-py38
-      - store_artifacts:
-          path: ./logs
-  integration-bigquery-py38:
-    docker: *test_only
-    steps:
-      - checkout
-      - run:
-          name: Run tests
-          command: tox -e integration-bigquery-py38
-      - store_artifacts:
-          path: ./logs
-
-workflows:
-  version: 2
-  test-everything:
-    jobs:
-      - unit
-      - integration-postgres-py36:
-          requires:
-            - unit
-      - integration-redshift-py36:
-          requires:
-            - integration-postgres-py36
-          filters: &no_forks
-            branches:
-              # Forked pull requests have CIRCLE_BRANCH set to pull/XXX
-              ignore: /pull\/[0-9]+/
-      - integration-bigquery-py36:
-          requires:
-            - integration-postgres-py36
-          filters: *no_forks
-      - integration-snowflake-py36:
-          requires:
-            - integration-postgres-py36
-          filters: *no_forks
-      - integration-postgres-py38:
-          requires:
-            - unit
-      - integration-redshift-py38:
-          requires:
-            - integration-postgres-py38
-          filters: *no_forks
-      - integration-bigquery-py38:
-          requires:
-            - integration-postgres-py38
-          filters: *no_forks
-      - integration-snowflake-py38:
-          requires:
-            - integration-postgres-py38
-          filters: *no_forks
-      - build-wheels:
-          requires:
-            - unit
-            - integration-postgres-py36
-            - integration-redshift-py36
-            - integration-bigquery-py36
-            - integration-snowflake-py36
-            - integration-postgres-py38
-            - integration-redshift-py38
-            - integration-bigquery-py38
-            - integration-snowflake-py38
-          filters: *no_forks

.github/CODEOWNERS

@@ -0,0 +1,43 @@
+# This file contains the code owners for the dbt-core repo.
+# PRs will be automatically assigned for review to the associated 
+# team(s) or person(s) that touches any files that are mapped to them.
+#
+# A statement takes precedence over the statements above it so more general
+# assignments are found at the top with specific assignments being lower in
+# the ordering (i.e. catch all assignment should be the first item)
+#
+# Consult GitHub documentation for formatting guidelines:
+# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners#example-of-a-codeowners-file
+
+# As a default for areas with no assignment, 
+# the core team as a whole will be assigned
+*       @dbt-labs/core
+
+# Changes to GitHub configurations including Actions
+/.github/ @leahwicz
+
+# Language core modules
+/core/dbt/config/     @dbt-labs/core-language
+/core/dbt/context/    @dbt-labs/core-language
+/core/dbt/contracts/  @dbt-labs/core-language
+/core/dbt/deps/       @dbt-labs/core-language
+/core/dbt/parser/     @dbt-labs/core-language
+
+# Execution core modules
+/core/dbt/events/     @dbt-labs/core-execution @dbt-labs/core-language # eventually remove language but they have knowledge here now
+/core/dbt/graph/      @dbt-labs/core-execution
+/core/dbt/task/       @dbt-labs/core-execution
+
+# Adapter interface, scaffold, Postgres plugin
+/core/dbt/adapters    @dbt-labs/core-adapters
+/core/scripts/create_adapter_plugin.py    @dbt-labs/core-adapters
+/plugins/             @dbt-labs/core-adapters
+
+# Global project: default macros, including generic tests + materializations
+/core/dbt/include/global_project    @dbt-labs/core-execution @dbt-labs/core-adapters
+
+# Perf regression testing framework
+# This excludes the test project files itself since those aren't specific 
+# framework changes (excluded by not setting an owner next to it- no owner)
+/performance @nathaniel-may
+/performance/projects

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,85 @@
+name: 🐞 Bug
+description: Report a bug or an issue you've found with dbt
+title: "[Bug] <title>"
+labels: ["bug", "triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report!
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the bug you encountered.
+      options:
+        - label: I have searched the existing issues
+          required: true
+  - type: textarea
+    attributes:
+      label: Current Behavior
+      description: A concise description of what you're experiencing.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Expected Behavior
+      description: A concise description of what you expected to happen.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Steps To Reproduce
+      description: Steps to reproduce the behavior.
+      placeholder: |
+        1. In this environment...
+        2. With this config...
+        3. Run '...'
+        4. See error...
+    validations:
+      required: false
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant log output
+      description: |
+        If applicable, log output to help explain your problem.
+      render: shell
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Environment
+      description: |
+        examples:
+          - **OS**: Ubuntu 20.04
+          - **Python**: 3.7.2 (`python --version`)
+          - **dbt**: 0.21.0 (`dbt --version`)
+      value: |
+        - OS:
+        - Python:
+        - dbt:
+      render: markdown
+    validations:
+      required: false
+  - type: dropdown
+    id: database
+    attributes:
+      label: What database are you using dbt with?
+      multiple: true
+      options:
+        - postgres
+        - redshift
+        - snowflake
+        - bigquery
+        - other (mention it in "Additional Context")
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Additional Context
+      description: |
+        Links? References? Anything that will give us more context about the issue you are encountering!
+
+        Tip: You can attach images or log files by clicking this area to highlight it and then dragging files in.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,41 +0,0 @@
----
-name: Bug report
-about: Report a bug or an issue you've found with dbt
-title: ''
-labels: bug, triage
-assignees: ''
-
----
-
-### Describe the bug
-A clear and concise description of what the bug is. What command did you run? What happened?
-
-### Steps To Reproduce
-In as much detail as possible, please provide steps to reproduce the issue. Sample data that triggers the issue, example model code, etc is all very helpful here.
-
-### Expected behavior
-A clear and concise description of what you expected to happen.
-
-### Screenshots and log output
-If applicable, add screenshots or log output to help explain your problem.
-
-### System information
-**Which database are you using dbt with?**
-- [ ] postgres
-- [ ] redshift
-- [ ] bigquery
-- [ ] snowflake
-- [ ] other (specify: ____________)
-
-
-**The output of `dbt --version`:**
-```
-<output goes here>
-```
-
-**The operating system you're using:**
-
-**The output of `python --version`:**
-
-### Additional context
-Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,16 @@
+contact_links:
+  - name: Create an issue for dbt-redshift
+    url: https://github.com/dbt-labs/dbt-redshift/issues/new/choose
+    about: Report a bug or request a feature for dbt-redshift
+  - name: Create an issue for dbt-bigquery
+    url: https://github.com/dbt-labs/dbt-bigquery/issues/new/choose
+    about: Report a bug or request a feature for dbt-bigquery
+  - name: Create an issue for dbt-snowflake
+    url: https://github.com/dbt-labs/dbt-snowflake/issues/new/choose
+    about: Report a bug or request a feature for dbt-snowflake
+  - name: Ask a question or get support
+    url: https://docs.getdbt.com/docs/guides/getting-help
+    about: Ask a question or request support
+  - name: Questions on Stack Overflow
+    url: https://stackoverflow.com/questions/tagged/dbt
+    about: Look at questions/answers at Stack Overflow

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -0,0 +1,49 @@
+name: ✨ Feature
+description: Suggest an idea for dbt
+title: "[Feature] <title>"
+labels: ["enhancement", "triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this feature requests!
+  - type: checkboxes
+    attributes:
+      label: Is there an existing feature request for this?
+      description: Please search to see if an issue already exists for the feature you would like.
+      options:
+        - label: I have searched the existing issues
+          required: true
+  - type: textarea
+    attributes:
+      label: Describe the Feature
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Describe alternatives you've considered
+      description: |
+        A clear and concise description of any alternative solutions or features you've considered.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Who will this benefit?
+      description: |
+        What kind of use case will this feature be useful for? Please be specific and provide examples, this will help us prioritize properly.
+    validations:
+      required: false
+  - type: input
+    attributes:
+      label: Are you interested in contributing this feature?
+      description: Let us know if you want to write some code, and how we can help.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Anything else?
+      description: |
+        Links? References? Anything that will give us more context about the feature you are suggesting!
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,20 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for dbt
-title: ''
-labels: enhancement, triage
-assignees: ''
-
----
-
-### Describe the feature
-A clear and concise description of what you want to happen.
-
-### Describe alternatives you've considered
-A clear and concise description of any alternative solutions or features you've considered.
-
-### Additional context
-Is this feature database-specific? Which database(s) is/are relevant? Please include any other relevant context here.
-
-### Who will this benefit?
-What kind of use case will this feature be useful for? Please be specific and provide examples, this will help us prioritize properly.

.github/actions/setup-postgres-linux/action.yml

@@ -0,0 +1,10 @@
+name: "Set up postgres (linux)"
+description: "Set up postgres service on linux vm for dbt integration tests"
+runs:
+  using: "composite"
+  steps:
+    - shell: bash
+      run: |
+        sudo systemctl start postgresql.service
+        pg_isready
+        sudo -u postgres bash ${{ github.action_path }}/setup_db.sh

.github/actions/setup-postgres-linux/setup_db.sh

@@ -0,0 +1 @@
+../../../test/setup_db.sh

.github/actions/setup-postgres-macos/action.yml

@@ -0,0 +1,24 @@
+name: "Set up postgres (macos)"
+description: "Set up postgres service on macos vm for dbt integration tests"
+runs:
+  using: "composite"
+  steps:
+    - shell: bash
+      run: |
+        brew services start postgresql
+        echo "Check PostgreSQL service is running"
+        i=10
+        COMMAND='pg_isready'
+        while [ $i -gt -1 ]; do
+            if [ $i == 0 ]; then
+                echo "PostgreSQL service not ready, all attempts exhausted"
+                exit 1
+            fi
+            echo "Check PostgreSQL service status"
+            eval $COMMAND && break
+            echo "PostgreSQL service not ready, wait 10 more sec, attempts left: $i"
+            sleep 10
+            ((i--))
+        done
+        createuser -s postgres
+        bash ${{ github.action_path }}/setup_db.sh

.github/actions/setup-postgres-macos/setup_db.sh

@@ -0,0 +1 @@
+../../../test/setup_db.sh

.github/actions/setup-postgres-windows/action.yml

@@ -0,0 +1,12 @@
+name: "Set up postgres (windows)"
+description: "Set up postgres service on windows vm for dbt integration tests"
+runs:
+  using: "composite"
+  steps:
+    - shell: pwsh
+      run: |
+        $pgService = Get-Service -Name postgresql*
+        Set-Service -InputObject $pgService -Status running -StartupType automatic
+        Start-Process -FilePath "$env:PGBIN\pg_isready" -Wait -PassThru
+        $env:Path += ";$env:PGBIN"
+        bash ${{ github.action_path }}/setup_db.sh

.github/actions/setup-postgres-windows/setup_db.sh

@@ -0,0 +1 @@
+../../../test/setup_db.sh

.github/dependabot.yml

@@ -0,0 +1,30 @@
+version: 2
+updates:
+  # python dependencies
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    rebase-strategy: "disabled"
+  - package-ecosystem: "pip"
+    directory: "/core"
+    schedule:
+      interval: "daily"
+    rebase-strategy: "disabled"
+  - package-ecosystem: "pip"
+    directory: "/plugins/postgres"
+    schedule:
+      interval: "daily"
+    rebase-strategy: "disabled"
+
+  # docker dependencies
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    rebase-strategy: "disabled"
+  - package-ecosystem: "docker"
+    directory: "/docker"
+    schedule:
+      interval: "weekly"
+    rebase-strategy: "disabled"

.github/pull_request_template.md

@@ -4,19 +4,18 @@ resolves #
   Include the number of the issue addressed by this PR above if applicable.
   PRs for code changes without an associated issue *will not be merged*.
   See CONTRIBUTING.md for more information.
-
-  Example:
-    resolves #1234
 -->
 
-
 ### Description
 
-<!--- Describe the Pull Request here -->
-
+<!---
+  Describe the Pull Request here. Add any references and info to help reviewers
+  understand your changes. Include any tradeoffs you considered.
+-->
 
 ### Checklist
- - [ ] I have signed the [CLA](https://docs.getdbt.com/docs/contributor-license-agreements)
- - [ ] I have run this code in development and it appears to resolve the stated issue
- - [ ] This PR includes tests, or tests are not required/relevant for this PR
- - [ ] I have updated the `CHANGELOG.md` and added information about my change to the "dbt next" section.
+
+- [ ] I have signed the [CLA](https://docs.getdbt.com/docs/contributor-license-agreements)
+- [ ] I have run this code in development and it appears to resolve the stated issue
+- [ ] This PR includes tests, or tests are not required/relevant for this PR
+- [ ] I have updated the `CHANGELOG.md` and added information about my change

.github/scripts/integration-test-matrix.js

@@ -0,0 +1,95 @@
+module.exports = ({ context }) => {
+  const defaultPythonVersion = "3.8";
+  const supportedPythonVersions = ["3.7", "3.8", "3.9"];
+  const supportedAdapters = ["postgres"];
+
+  // if PR, generate matrix based on files changed and PR labels
+  if (context.eventName.includes("pull_request")) {
+    // `changes` is a list of adapter names that have related
+    // file changes in the PR
+    // ex: ['postgres', 'snowflake']
+    const changes = JSON.parse(process.env.CHANGES);
+    const labels = context.payload.pull_request.labels.map(({ name }) => name);
+    console.log("labels", labels);
+    console.log("changes", changes);
+    const testAllLabel = labels.includes("test all");
+    const include = [];
+
+    for (const adapter of supportedAdapters) {
+      if (
+        changes.includes(adapter) ||
+        testAllLabel ||
+        labels.includes(`test ${adapter}`)
+      ) {
+        for (const pythonVersion of supportedPythonVersions) {
+          if (
+            pythonVersion === defaultPythonVersion ||
+            labels.includes(`test python${pythonVersion}`) ||
+            testAllLabel
+          ) {
+            // always run tests on ubuntu by default
+            include.push({
+              os: "ubuntu-latest",
+              adapter,
+              "python-version": pythonVersion,
+            });
+
+            if (labels.includes("test windows") || testAllLabel) {
+              include.push({
+                os: "windows-latest",
+                adapter,
+                "python-version": pythonVersion,
+              });
+            }
+
+            if (labels.includes("test macos") || testAllLabel) {
+              include.push({
+                os: "macos-latest",
+                adapter,
+                "python-version": pythonVersion,
+              });
+            }
+          }
+        }
+      }
+    }
+
+    console.log("matrix", { include });
+
+    return {
+      include,
+    };
+  }
+  // if not PR, generate matrix of python version, adapter, and operating
+  // system to run integration tests on
+
+  const include = [];
+  // run for all adapters and python versions on ubuntu
+  for (const adapter of supportedAdapters) {
+    for (const pythonVersion of supportedPythonVersions) {
+      include.push({
+        os: 'ubuntu-latest',
+        adapter: adapter,
+        "python-version": pythonVersion,
+      });
+    }
+  }
+
+  // additionally include runs for all adapters, on macos and windows,
+  // but only for the default python version
+  for (const adapter of supportedAdapters) {
+    for (const operatingSystem of ["windows-latest", "macos-latest"]) {
+      include.push({
+        os: operatingSystem,
+        adapter: adapter,
+        "python-version": defaultPythonVersion,
+      });
+    }
+  }
+
+  console.log("matrix", { include });
+
+  return {
+    include,
+  };
+};

.github/workflows/backport.yml

@@ -0,0 +1,34 @@
+# **what?**
+# When a PR is merged, if it has the backport label, it will create 
+# a new PR to backport those changes to the given branch. If it can't
+# cleanly do a backport, it will comment on the merged PR of the failure.
+#
+# Label naming convention: "backport <branch name to backport to>"
+# Example: backport 1.0.latest
+#
+# You MUST "Squash and merge" the original PR or this won't work.
+
+# **why?**
+# Changes sometimes need to be backported to release branches.
+# This automates the backporting process
+
+# **when?**
+# Once a PR is "Squash and merge"'d and it has been correctly labeled
+# according to the naming convention.
+
+name: Backport
+on:
+  pull_request:
+    types:
+      - closed
+      - labeled
+
+jobs:
+  backport:
+    runs-on: ubuntu-18.04
+    name: Backport
+    steps:
+      - name: Backport
+        uses: tibdex/backport@v1.1.1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/integration.yml

@@ -0,0 +1,222 @@
+# **what?**
+# This workflow runs all integration tests for supported OS
+# and python versions and core adapters. If triggered by PR,
+# the workflow will only run tests for adapters related
+# to code changes. Use the `test all` and `test ${adapter}`
+# label to run all or additional tests. Use `ok to test`
+# label to mark PRs from forked repositories that are safe
+# to run integration tests for. Requires secrets to run
+# against different warehouses.
+
+# **why?**
+# This checks the functionality of dbt from a user's perspective
+# and attempts to catch functional regressions.
+
+# **when?**
+# This workflow will run on every push to a protected branch
+# and when manually triggered. It will also run for all PRs, including
+# PRs from forks. The workflow will be skipped until there is a label
+# to mark the PR as safe to run.
+
+name: Adapter Integration Tests
+
+on:
+  # pushes to release branches
+  push:
+    branches:
+      - "main"
+      - "develop"
+      - "*.latest"
+      - "releases/*"
+  # all PRs, important to note that `pull_request_target` workflows
+  # will run in the context of the target branch of a PR
+  pull_request_target:
+  # manual tigger
+  workflow_dispatch:
+
+# explicitly turn off permissions for `GITHUB_TOKEN`
+permissions: read-all
+
+# will cancel previous workflows triggered by the same event and for the same ref for PRs or same SHA otherwise
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ contains(github.event_name, 'pull_request') && github.event.pull_request.head.ref || github.sha }}
+  cancel-in-progress: true
+
+# sets default shell to bash, for all operating systems
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  # generate test metadata about what files changed and the testing matrix to use
+  test-metadata:
+    # run if not a PR from a forked repository or has a label to mark as safe to test
+    if: >-
+      github.event_name != 'pull_request_target' ||
+      github.event.pull_request.head.repo.full_name == github.repository ||
+      contains(github.event.pull_request.labels.*.name, 'ok to test')
+
+    runs-on: ubuntu-latest
+
+    outputs:
+      matrix: ${{ steps.generate-matrix.outputs.result }}
+
+    steps:
+      - name: Check out the repository (non-PR)
+        if: github.event_name != 'pull_request_target'
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Check out the repository (PR)
+        if: github.event_name == 'pull_request_target'
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Check if relevant files changed
+        # https://github.com/marketplace/actions/paths-changes-filter
+        # For each filter, it sets output variable named by the filter to the text:
+        #  'true' - if any of changed files matches any of filter rules
+        #  'false' - if none of changed files matches any of filter rules
+        # also, returns:
+        #  `changes` - JSON array with names of all filters matching any of the changed files
+        uses: dorny/paths-filter@v2
+        id: get-changes
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          filters: |
+            postgres:
+              - 'core/**'
+              - 'plugins/postgres/**'
+              - 'dev-requirements.txt'
+
+      - name: Generate integration test matrix
+        id: generate-matrix
+        uses: actions/github-script@v4
+        env:
+          CHANGES: ${{ steps.get-changes.outputs.changes }}
+        with:
+          script: |
+            const script = require('./.github/scripts/integration-test-matrix.js')
+            const matrix = script({ context })
+            console.log(matrix)
+            return matrix
+
+  test:
+    name: ${{ matrix.adapter }} / python ${{ matrix.python-version }} / ${{ matrix.os }}
+
+    # run if not a PR from a forked repository or has a label to mark as safe to test
+    # also checks that the matrix generated is not empty
+    if: >-
+      needs.test-metadata.outputs.matrix &&
+      fromJSON( needs.test-metadata.outputs.matrix ).include[0] &&
+      (
+        github.event_name != 'pull_request_target' ||
+        github.event.pull_request.head.repo.full_name == github.repository ||
+        contains(github.event.pull_request.labels.*.name, 'ok to test')
+      )
+
+    runs-on: ${{ matrix.os }}
+
+    needs: test-metadata
+
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJSON(needs.test-metadata.outputs.matrix) }}
+
+    env:
+      TOXENV: integration-${{ matrix.adapter }}
+      PYTEST_ADDOPTS: "-v --color=yes -n4 --csv integration_results.csv"
+      DBT_INVOCATION_ENV: github-actions
+
+    steps:
+      - name: Check out the repository
+        if: github.event_name != 'pull_request_target'
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      # explicity checkout the branch for the PR,
+      # this is necessary for the `pull_request_target` event
+      - name: Check out the repository (PR)
+        if: github.event_name == 'pull_request_target'
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Set up postgres (linux)
+        if: |
+          matrix.adapter == 'postgres' &&
+          runner.os == 'Linux'
+        uses: ./.github/actions/setup-postgres-linux
+
+      - name: Set up postgres (macos)
+        if: |
+          matrix.adapter == 'postgres' &&
+          runner.os == 'macOS'
+        uses: ./.github/actions/setup-postgres-macos
+
+      - name: Set up postgres (windows)
+        if: |
+          matrix.adapter == 'postgres' &&
+          runner.os == 'Windows'
+        uses: ./.github/actions/setup-postgres-windows
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install tox
+          pip --version
+          tox --version
+
+      - name: Run tox (postgres)
+        if: matrix.adapter == 'postgres'
+        run: tox
+
+      - uses: actions/upload-artifact@v2
+        if: always()
+        with:
+          name: logs
+          path: ./logs
+
+      - name: Get current date
+        if: always()
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%dT%H_%M_%S')" #no colons allowed for artifacts
+
+      - uses: actions/upload-artifact@v2
+        if: always()
+        with:
+          name: integration_results_${{ matrix.python-version }}_${{ matrix.os }}_${{ matrix.adapter }}-${{ steps.date.outputs.date }}.csv
+          path: integration_results.csv
+
+  require-label-comment:
+    runs-on: ubuntu-latest
+
+    needs: test
+
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Needs permission PR comment
+        if: >-
+          needs.test.result == 'skipped' &&
+          github.event_name == 'pull_request_target' &&
+          github.event.pull_request.head.repo.full_name != github.repository
+        uses: unsplash/comment-on-pr@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          msg: |
+            "You do not have permissions to run integration tests, @dbt-labs/core "\
+            "needs to label this PR with `ok to test` in order to run integration tests!"
+          check_for_duplicate_msg: true

.github/workflows/jira-creation.yml

@@ -0,0 +1,26 @@
+# **what?**
+# Mirrors issues into Jira. Includes the information: title,
+# GitHub Issue ID and URL
+
+# **why?**
+# Jira is our tool for tracking and we need to see these issues in there
+
+# **when?**
+# On issue creation or when an issue is labeled `Jira`
+
+name: Jira Issue Creation
+
+on:
+  issues:
+    types: [opened, labeled]
+    
+permissions:
+  issues: write
+
+jobs:
+  call-label-action:
+    uses: dbt-labs/jira-actions/.github/workflows/jira-creation.yml@main
+    secrets:
+      JIRA_BASE_URL: ${{ secrets.JIRA_BASE_URL }}
+      JIRA_USER_EMAIL: ${{ secrets.JIRA_USER_EMAIL }}
+      JIRA_API_TOKEN: ${{ secrets.JIRA_API_TOKEN }}

.github/workflows/jira-label.yml

@@ -0,0 +1,27 @@
+# **what?**
+# Calls mirroring Jira label Action. Includes adding a new label
+# to an existing issue or removing a label as well
+
+# **why?**
+# Jira is our tool for tracking and we need to see these labels in there
+
+# **when?**
+# On labels being added or removed from issues
+
+name: Jira Label Mirroring
+
+on:
+  issues:
+    types: [labeled, unlabeled]
+    
+permissions:
+  issues: read
+
+jobs:
+  call-label-action:
+    uses: dbt-labs/jira-actions/.github/workflows/jira-label.yml@main
+    secrets:
+      JIRA_BASE_URL: ${{ secrets.JIRA_BASE_URL }}
+      JIRA_USER_EMAIL: ${{ secrets.JIRA_USER_EMAIL }}
+      JIRA_API_TOKEN: ${{ secrets.JIRA_API_TOKEN }}
+    

.github/workflows/jira-transition.yml

@@ -0,0 +1,24 @@
+# **what?**
+# Transition a Jira issue to a new state
+# Only supports these GitHub Issue transitions:
+#   closed, deleted, reopened
+
+# **why?**
+# Jira needs to be kept up-to-date
+
+# **when?**
+# On issue closing, deletion, reopened
+
+name: Jira Issue Transition
+
+on:
+  issues:
+    types: [closed, deleted, reopened]
+
+jobs:
+  call-label-action:
+    uses: dbt-labs/jira-actions/.github/workflows/jira-transition.yml@main
+    secrets:
+      JIRA_BASE_URL: ${{ secrets.JIRA_BASE_URL }}
+      JIRA_USER_EMAIL: ${{ secrets.JIRA_USER_EMAIL }}
+      JIRA_API_TOKEN: ${{ secrets.JIRA_API_TOKEN }}

.github/workflows/main.yml

@@ -0,0 +1,207 @@
+# **what?**
+# Runs code quality checks, unit tests, and verifies python build on
+# all code commited to the repository. This workflow should not
+# require any secrets since it runs for PRs from forked repos.
+# By default, secrets are not passed to workflows running from
+# a forked repo.
+
+# **why?**
+# Ensure code for dbt meets a certain quality standard.
+
+# **when?**
+# This will run for all PRs, when code is pushed to a release
+# branch, and when manually triggered.
+
+name: Tests and Code Checks
+
+on:
+  push:
+    branches:
+      - "main"
+      - "develop"
+      - "*.latest"
+      - "releases/*"
+  pull_request:
+  workflow_dispatch:
+
+permissions: read-all
+
+# will cancel previous workflows triggered by the same event and for the same ref for PRs or same SHA otherwise
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ contains(github.event_name, 'pull_request') && github.event.pull_request.head.ref || github.sha }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  code-quality:
+    name: ${{ matrix.toxenv }}
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        toxenv: [flake8, mypy]
+
+    env:
+      TOXENV: ${{ matrix.toxenv }}
+      PYTEST_ADDOPTS: "-v --color=yes"
+
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install tox
+          pip --version
+          tox --version
+
+      - name: Run tox
+        run: tox
+
+  unit:
+    name: unit test / python ${{ matrix.python-version }}
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
+
+    env:
+      TOXENV: "unit"
+      PYTEST_ADDOPTS: "-v --color=yes --csv unit_results.csv"
+
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install tox
+          pip --version
+          tox --version
+
+      - name: Run tox
+        run: tox
+
+      - name: Get current date
+        if: always()
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%dT%H_%M_%S')" #no colons allowed for artifacts
+
+      - uses: actions/upload-artifact@v2
+        if: always()
+        with:
+          name: unit_results_${{ matrix.python-version }}-${{ steps.date.outputs.date }}.csv
+          path: unit_results.csv
+
+  build:
+    name: build packages
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install --upgrade setuptools wheel twine check-wheel-contents
+          pip --version
+
+      - name: Build distributions
+        run: ./scripts/build-dist.sh
+
+      - name: Show distributions
+        run: ls -lh dist/
+
+      - name: Check distribution descriptions
+        run: |
+          twine check dist/*
+
+      - name: Check wheel contents
+        run: |
+          check-wheel-contents dist/*.whl --ignore W007,W008
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: dist/
+
+  test-build:
+    name: verify packages / python ${{ matrix.python-version }} / ${{ matrix.os }}
+
+    needs: build
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.7, 3.8, 3.9]
+
+    steps:
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install --upgrade wheel
+          pip --version
+
+      - uses: actions/download-artifact@v2
+        with:
+          name: dist
+          path: dist/
+
+      - name: Show distributions
+        run: ls -lh dist/
+
+      - name: Install wheel distributions
+        run: |
+          find ./dist/*.whl -maxdepth 1 -type f | xargs pip install --force-reinstall --find-links=dist/
+
+      - name: Check wheel distributions
+        run: |
+          dbt --version
+
+      - name: Install source distributions
+        # ignore dbt-1.0.0, which intentionally raises an error when installed from source
+        run: |
+          find ./dist/dbt-[a-z]*.gz -maxdepth 1 -type f | xargs pip install --force-reinstall --find-links=dist/
+
+      - name: Check source distributions
+        run: |
+          dbt --version

.github/workflows/performance.yml

@@ -0,0 +1,176 @@
+name: Performance Regression Tests
+# Schedule triggers
+on:
+  # runs twice a day at 10:05am and 10:05pm
+  schedule:
+    - cron: "5 10,22 * * *"
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  # checks fmt of runner code
+  # purposefully not a dependency of any other job
+  # will block merging, but not prevent developing
+  fmt:
+    name: Cargo fmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - run: rustup component add rustfmt
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --manifest-path performance/runner/Cargo.toml --all -- --check
+
+  # runs any tests associated with the runner
+  # these tests make sure the runner logic is correct
+  test-runner:
+    name: Test Runner
+    runs-on: ubuntu-latest
+    env:
+      # turns errors into warnings
+      RUSTFLAGS: "-D warnings"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --manifest-path performance/runner/Cargo.toml
+
+  # build an optimized binary to be used as the runner in later steps
+  build-runner:
+    needs: [test-runner]
+    name: Build Runner
+    runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: "-D warnings"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release --manifest-path performance/runner/Cargo.toml
+      - uses: actions/upload-artifact@v2
+        with:
+          name: runner
+          path: performance/runner/target/release/runner
+
+  # run the performance measurements on the current or default branch
+  measure-dev:
+    needs: [build-runner]
+    name: Measure Dev Branch
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout dev
+        uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v2.2.2
+        with:
+          python-version: "3.8"
+      - name: install dbt
+        run: pip install -r dev-requirements.txt -r editable-requirements.txt
+      - name: install hyperfine
+        run: wget https://github.com/sharkdp/hyperfine/releases/download/v1.11.0/hyperfine_1.11.0_amd64.deb && sudo dpkg -i hyperfine_1.11.0_amd64.deb
+      - uses: actions/download-artifact@v2
+        with:
+          name: runner
+      - name: change permissions
+        run: chmod +x ./runner
+      - name: run
+        run: ./runner measure -b dev -p ${{ github.workspace }}/performance/projects/
+      - uses: actions/upload-artifact@v2
+        with:
+          name: dev-results
+          path: performance/results/
+
+  # run the performance measurements on the release branch which we use
+  # as a performance baseline. This part takes by far the longest, so
+  # we do everything we can first so the job fails fast.
+  # -----
+  # we need to checkout dbt twice in this job: once for the baseline dbt
+  # version, and once to get the latest regression testing projects,
+  # metrics, and runner code from the develop or current branch so that
+  # the calculations match for both versions of dbt we are comparing.
+  measure-baseline:
+    needs: [build-runner]
+    name: Measure Baseline Branch
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout latest
+        uses: actions/checkout@v2
+        with:
+          ref: "0.20.latest"
+      - name: Setup Python
+        uses: actions/setup-python@v2.2.2
+        with:
+          python-version: "3.8"
+      - name: move repo up a level
+        run: mkdir ${{ github.workspace }}/../baseline/ && cp -r ${{ github.workspace }} ${{ github.workspace }}/../baseline
+      - name: "[debug] ls new dbt location"
+        run: ls ${{ github.workspace }}/../baseline/dbt/
+      # installation creates egg-links so we have to preserve source
+      - name: install dbt from new location
+        run: cd ${{ github.workspace }}/../baseline/dbt/ && pip install -r dev-requirements.txt -r editable-requirements.txt
+      # checkout the current branch to get all the target projects
+      # this deletes the old checked out code which is why we had to copy before
+      - name: checkout dev
+        uses: actions/checkout@v2
+      - name: install hyperfine
+        run: wget https://github.com/sharkdp/hyperfine/releases/download/v1.11.0/hyperfine_1.11.0_amd64.deb && sudo dpkg -i hyperfine_1.11.0_amd64.deb
+      - uses: actions/download-artifact@v2
+        with:
+          name: runner
+      - name: change permissions
+        run: chmod +x ./runner
+      - name: run runner
+        run: ./runner measure -b baseline -p ${{ github.workspace }}/performance/projects/
+      - uses: actions/upload-artifact@v2
+        with:
+          name: baseline-results
+          path: performance/results/
+
+  # detect regressions on the output generated from measuring
+  # the two branches. Exits with non-zero code if a regression is detected.
+  calculate-regressions:
+    needs: [measure-dev, measure-baseline]
+    name: Compare Results
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: dev-results
+      - uses: actions/download-artifact@v2
+        with:
+          name: baseline-results
+      - name: "[debug] ls result files"
+        run: ls
+      - uses: actions/download-artifact@v2
+        with:
+          name: runner
+      - name: change permissions
+        run: chmod +x ./runner
+      - name: make results directory
+        run: mkdir ./final-output/
+      - name: run calculation
+        run: ./runner calculate -r ./ -o ./final-output/
+        # always attempt to upload the results even if there were regressions found
+      - uses: actions/upload-artifact@v2
+        if: ${{ always() }}
+        with:
+          name: final-calculations
+          path: ./final-output/*

.github/workflows/release.yml

@@ -0,0 +1,200 @@
+# **what?**
+# Take the given commit, run unit tests specifically on that sha, build and 
+# package it, and then release to GitHub and PyPi with that specific build
+
+# **why?**
+# Ensure an automated and tested release process
+
+# **when?**
+# This will only run manually with a given sha and version
+
+name: Release to GitHub and PyPi
+
+on:
+  workflow_dispatch:
+    inputs:
+      sha:
+       description: 'The last commit sha in the release'
+       required: true
+      version_number:
+       description: 'The release version number (i.e. 1.0.0b1)'
+       required: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  unit:
+    name: Unit test
+
+    runs-on: ubuntu-latest
+
+    env:
+      TOXENV: "unit"
+
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+          ref: ${{ github.event.inputs.sha }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install tox
+          pip --version
+          tox --version
+
+      - name: Run tox
+        run: tox
+
+  build:
+    name: build packages
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+          ref: ${{ github.event.inputs.sha }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install --upgrade setuptools wheel twine check-wheel-contents
+          pip --version
+
+      - name: Build distributions
+        run: ./scripts/build-dist.sh
+
+      - name: Show distributions
+        run: ls -lh dist/
+
+      - name: Check distribution descriptions
+        run: |
+          twine check dist/*
+
+      - name: Check wheel contents
+        run: |
+          check-wheel-contents dist/*.whl --ignore W007,W008
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: |
+            dist/
+            !dist/dbt-${{github.event.inputs.version_number}}.tar.gz
+
+  test-build:
+    name: verify packages
+
+    needs: [build, unit]
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install python dependencies
+        run: |
+          pip install --user --upgrade pip
+          pip install --upgrade wheel
+          pip --version
+
+      - uses: actions/download-artifact@v2
+        with:
+          name: dist
+          path: dist/
+
+      - name: Show distributions
+        run: ls -lh dist/
+
+      - name: Install wheel distributions
+        run: |
+          find ./dist/*.whl -maxdepth 1 -type f | xargs pip install --force-reinstall --find-links=dist/
+
+      - name: Check wheel distributions
+        run: |
+          dbt --version
+
+      - name: Install source distributions
+        run: |
+          find ./dist/*.gz -maxdepth 1 -type f | xargs pip install --force-reinstall --find-links=dist/
+
+      - name: Check source distributions
+        run: |
+          dbt --version
+
+
+  github-release:
+    name: GitHub Release 
+
+    needs: test-build
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: dist
+          path: '.'
+          
+      # Need to set an output variable because env variables can't be taken as input
+      # This is needed for the next step with releasing to GitHub
+      - name: Find release type
+        id: release_type
+        env:
+          IS_PRERELEASE: ${{ contains(github.event.inputs.version_number, 'rc') ||  contains(github.event.inputs.version_number, 'b') }}
+        run: |
+          echo ::set-output name=isPrerelease::$IS_PRERELEASE
+
+      - name: Creating GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: dbt-core v${{github.event.inputs.version_number}}
+          tag_name: v${{github.event.inputs.version_number}}
+          prerelease: ${{ steps.release_type.outputs.isPrerelease }}
+          target_commitish: ${{github.event.inputs.sha}}
+          body: |
+            [Release notes](https://github.com/dbt-labs/dbt-core/blob/main/CHANGELOG.md)
+          files: |
+            dbt_postgres-${{github.event.inputs.version_number}}-py3-none-any.whl
+            dbt_core-${{github.event.inputs.version_number}}-py3-none-any.whl
+            dbt-postgres-${{github.event.inputs.version_number}}.tar.gz
+            dbt-core-${{github.event.inputs.version_number}}.tar.gz
+          
+  pypi-release:
+    name: Pypi release
+
+    runs-on: ubuntu-latest
+
+    needs: github-release
+
+    environment: PypiProd
+    steps:    
+      - uses: actions/download-artifact@v2
+        with:
+          name: dist
+          path: 'dist'
+      
+      - name: Publish distribution to PyPI
+        uses: pypa/gh-action-pypi-publish@v1.4.2
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}

.github/workflows/schema-check.yml

@@ -0,0 +1,87 @@
+# **what?**
+# Compares the schema of the dbt version of the given ref vs 
+# the latest official schema releases found in schemas.getdbt.com.
+# If there are differences, the workflow will fail and upload the
+# diff as an artifact. The metadata team should be alerted to the change.
+#
+# **why?**
+# Reaction work may need to be done if artifact schema changes
+# occur so we want to proactively alert to it.
+#
+# **when?**
+# On pushes to `develop` and release branches. Manual runs are also enabled.
+name: Artifact Schema Check
+
+on:
+  workflow_dispatch:
+  pull_request: #TODO: remove before merging
+  push:
+    branches:
+      - "develop"
+      - "*.latest"
+      - "releases/*"
+
+env:
+  LATEST_SCHEMA_PATH: ${{ github.workspace }}/new_schemas
+  SCHEMA_DIFF_ARTIFACT: ${{ github.workspace }}//schema_schanges.txt
+  DBT_REPO_DIRECTORY: ${{ github.workspace }}/dbt
+  SCHEMA_REPO_DIRECTORY: ${{ github.workspace }}/schemas.getdbt.com
+
+jobs:
+  checking-schemas:
+    name: "Checking schemas"
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+                
+      - name: Checkout dbt repo
+        uses: actions/checkout@v2.3.4
+        with:
+            path: ${{ env.DBT_REPO_DIRECTORY }}
+                       
+      - name: Checkout schemas.getdbt.com repo
+        uses: actions/checkout@v2.3.4    
+        with: 
+          repository: dbt-labs/schemas.getdbt.com
+          ref: 'main'
+          ssh-key: ${{ secrets.SCHEMA_SSH_PRIVATE_KEY }}
+          path: ${{ env.SCHEMA_REPO_DIRECTORY }}
+        
+      - name: Generate current schema
+        run: |
+          cd ${{ env.DBT_REPO_DIRECTORY }}
+          python3 -m venv env
+          source env/bin/activate
+          pip install --upgrade pip
+          pip install -r dev-requirements.txt -r editable-requirements.txt
+          python scripts/collect-artifact-schema.py --path ${{ env.LATEST_SCHEMA_PATH }}
+          
+      # Copy generated schema files into the schemas.getdbt.com repo
+      # Do a git diff to find any changes
+      # Ignore any date or version changes though
+      - name: Compare schemas
+        run: |
+          cp -r ${{ env.LATEST_SCHEMA_PATH }}/dbt ${{ env.SCHEMA_REPO_DIRECTORY }}
+          cd ${{ env.SCHEMA_REPO_DIRECTORY }}
+          diff_results=$(git diff -I='*[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])T' \
+          -I='*[0-9]{1}.[0-9]{2}.[0-9]{1}(rc[0-9]|b[0-9]| )' --compact-summary)
+          if [[ $(echo diff_results) ]]; then
+            echo $diff_results
+            echo "Schema changes detected!"
+            git diff -I='*[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])T' \
+              -I='*[0-9]{1}.[0-9]{2}.[0-9]{1}(rc[0-9]|b[0-9]| )' > ${{ env.SCHEMA_DIFF_ARTIFACT }}
+            exit 1
+          else
+            echo "No schema changes detected"
+          fi
+
+      - name: Upload schema diff
+        uses: actions/upload-artifact@v2.2.4
+        if: ${{ failure() }}
+        with:
+          name: 'schema_schanges.txt'
+          path: '${{ env.SCHEMA_DIFF_ARTIFACT }}'

.github/workflows/stale.yml

@@ -0,0 +1,18 @@
+name: "Close stale issues and PRs"
+on:
+  schedule:
+    - cron: "30 1 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      # pinned at v4 (https://github.com/actions/stale/releases/tag/v4.0.0)
+      - uses: actions/stale@cdf15f641adb27a71842045a94023bef6945e3aa
+        with:
+          stale-issue-message: "This issue has been marked as Stale because it has been open for 180 days with no activity. If you would like the issue to remain open, please remove the stale label or comment on the issue, or it will be closed in 7 days."
+          stale-pr-message: "This PR has been marked as Stale because it has been open for 180 days with no activity. If you would like the PR to remain open, please remove the stale label or comment on the PR, or it will be closed in 7 days."
+          # mark issues/PRs stale when they haven't seen activity in 180 days
+          days-before-stale: 180
+          # ignore checking issues with the following labels
+          exempt-issue-labels: "epic,discussion"

.github/workflows/structured-logging-schema-check.yml

@@ -0,0 +1,71 @@
+# This Action checks makes a dbt run to sample json structured logs
+# and checks that they conform to the currently documented schema.
+# 
+# If this action fails it either means we have unintentionally deviated
+# from our documented structured logging schema, or we need to bump the
+# version of our structured logging and add new documentation to
+# communicate these changes.
+
+
+name: Structured Logging Schema Check
+on:
+  push:
+    branches:
+      - "main"
+      - "*.latest"
+      - "releases/*"
+  pull_request:
+  workflow_dispatch:
+
+permissions: read-all
+
+jobs:
+  # run the performance measurements on the current or default branch
+  test-schema:
+    name: Test Log Schema
+    runs-on: ubuntu-latest
+    env:
+      # turns warnings into errors
+      RUSTFLAGS: "-D warnings"
+      # points tests to the log file
+      LOG_DIR: "/home/runner/work/dbt-core/dbt-core/logs"
+      # tells integration tests to output into json format
+      DBT_LOG_FORMAT: 'json'
+    steps:
+
+      - name: checkout dev
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Setup Python
+        uses: actions/setup-python@v2.2.2
+        with:
+          python-version: "3.8"
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: install dbt
+        run: pip install -r dev-requirements.txt -r editable-requirements.txt
+
+      - name: Set up postgres
+        uses: ./.github/actions/setup-postgres-linux
+
+      - name: ls
+        run: ls
+
+      # integration tests generate a ton of logs in different files. the next step will find them all.
+      # we actually care if these pass, because the normal test run doesn't usually include many json log outputs
+      - name: Run integration tests
+        run: tox -e py38-postgres -- -nauto
+
+      # apply our schema tests to every log event from the previous step
+      # skips any output that isn't valid json
+      - uses: actions-rs/cargo@v1
+        with:
+          command: run
+          args: --manifest-path test/interop/log_parsing/Cargo.toml

.github/workflows/version-bump.yml

@@ -0,0 +1,109 @@
+# **what?**
+# This workflow will take a version number and a dry run flag. With that
+# it will run versionbump to update the version number everywhere in the 
+# code base and then generate an update Docker requirements file. If this
+# is a dry run, a draft PR will open with the changes. If this isn't a dry
+# run, the changes will be committed to the branch this is run on.
+
+# **why?**
+# This is to aid in releasing dbt and making sure we have updated 
+# the versions and Docker requirements in all places.
+
+# **when?**
+# This is triggered either manually OR 
+# from the repository_dispatch event "version-bump" which is sent from
+# the dbt-release repo Action
+
+name: Version Bump
+
+on:
+  workflow_dispatch:
+    inputs:
+      version_number:
+       description: 'The version number to bump to'
+       required: true
+      is_dry_run:
+       description: 'Creates a draft PR to allow testing instead of committing to a branch'
+       required: true
+       default: 'true'  
+  repository_dispatch:
+    types: [version-bump]
+  
+jobs:
+  bump:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+
+      - name: Set version and dry run values
+        id: variables
+        env:
+          VERSION_NUMBER: "${{ github.event.client_payload.version_number == '' && github.event.inputs.version_number || github.event.client_payload.version_number }}"
+          IS_DRY_RUN: "${{ github.event.client_payload.is_dry_run == '' && github.event.inputs.is_dry_run || github.event.client_payload.is_dry_run }}"
+        run: |
+          echo Repository dispatch event version: ${{ github.event.client_payload.version_number }}
+          echo Repository dispatch event dry run: ${{ github.event.client_payload.is_dry_run }}
+          echo Workflow dispatch event version: ${{ github.event.inputs.version_number }}
+          echo Workflow dispatch event dry run: ${{ github.event.inputs.is_dry_run }}
+          echo ::set-output name=VERSION_NUMBER::$VERSION_NUMBER
+          echo ::set-output name=IS_DRY_RUN::$IS_DRY_RUN
+
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.8"
+
+      - name: Install python dependencies
+        run: |
+          python3 -m venv env
+          source env/bin/activate
+          pip install --upgrade pip     
+          
+      - name: Create PR branch
+        if: ${{ steps.variables.outputs.IS_DRY_RUN == 'true' }}
+        run: |
+          git checkout -b bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_$GITHUB_RUN_ID
+          git push origin bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_$GITHUB_RUN_ID
+          git branch --set-upstream-to=origin/bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_$GITHUB_RUN_ID bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_$GITHUB_RUN_ID
+      
+      # - name: Generate Docker requirements
+      #  run: |
+      #    source env/bin/activate
+      #    pip install -r requirements.txt 
+      #    pip freeze -l > docker/requirements/requirements.txt
+      #    git status
+
+      - name: Bump version
+        run: |
+          source env/bin/activate
+          pip install -r dev-requirements.txt 
+          env/bin/bumpversion --allow-dirty --new-version ${{steps.variables.outputs.VERSION_NUMBER}} major
+          git status
+
+      - name: Commit version bump directly
+        uses: EndBug/add-and-commit@v7
+        if: ${{ steps.variables.outputs.IS_DRY_RUN == 'false' }}
+        with:
+          author_name: 'Github Build Bot'
+          author_email: 'buildbot@fishtownanalytics.com'
+          message: 'Bumping version to ${{steps.variables.outputs.VERSION_NUMBER}}'
+
+      - name: Commit version bump to branch
+        uses: EndBug/add-and-commit@v7
+        if: ${{ steps.variables.outputs.IS_DRY_RUN == 'true' }}
+        with:
+          author_name: 'Github Build Bot'
+          author_email: 'buildbot@fishtownanalytics.com'
+          message: 'Bumping version to ${{steps.variables.outputs.VERSION_NUMBER}}'
+          branch: 'bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_${{GITHUB.RUN_ID}}'
+          push: 'origin origin/bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_${{GITHUB.RUN_ID}}'
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v3
+        if: ${{ steps.variables.outputs.IS_DRY_RUN == 'true' }}
+        with:
+          author: 'Github Build Bot <buildbot@fishtownanalytics.com>'
+          draft: true
+          base: ${{github.ref}}
+          title: 'Bumping version to ${{steps.variables.outputs.VERSION_NUMBER}}'
+          branch: 'bumping-version/${{steps.variables.outputs.VERSION_NUMBER}}_${{GITHUB.RUN_ID}}'

.gitignore

@@ -8,7 +8,8 @@ __pycache__/
 
 # Distribution / packaging
 .Python
-env/
+env*/
+dbt_env/
 build/
 develop-eggs/
 dist/
@@ -42,6 +43,7 @@ htmlcov/
 .coverage
 .coverage.*
 .cache
+.env
 nosetests.xml
 coverage.xml
 *,cover
@@ -83,3 +85,12 @@ target/
 
 # pycharm
 .idea/
+venv/
+
+# AWS credentials
+.aws/
+
+.DS_Store
+
+# vscode
+.vscode/

ARCHITECTURE.md

@@ -0,0 +1,48 @@
+The core function of dbt is SQL compilation and execution. Users create projects of dbt resources (models, tests, seeds, snapshots, ...), defined in SQL and YAML files, and they invoke dbt to create, update, or query associated views and tables. Today, dbt makes heavy use of Jinja2 to enable the templating of SQL, and to construct a DAG (Directed Acyclic Graph) from all of the resources in a project. Users can also extend their projects by installing resources (including Jinja macros) from other projects, called "packages."
+
+## dbt-core
+
+Most of the python code in the repository is within the `core/dbt` directory. Currently the main subdirectories are:
+
+- [`adapters`](core/dbt/adapters/README.md): Define base classes for behavior that is likely to differ across databases
+- [`clients`](core/dbt/clients/README.md): Interface with dependencies (agate, jinja) or across operating systems
+- [`config`](core/dbt/config/README.md): Reconcile user-supplied configuration from connection profiles, project files, and Jinja macros
+- [`context`](core/dbt/context/README.md): Build and expose dbt-specific Jinja functionality
+- [`contracts`](core/dbt/contracts/README.md): Define Python objects (dataclasses) that dbt expects to create and validate
+- [`deps`](core/dbt/deps/README.md): Package installation and dependency resolution
+- [`events`](core/dbt/events/README.md): Logging events
+- [`graph`](core/dbt/graph/README.md): Produce a `networkx` DAG of project resources, and selecting those resources given user-supplied criteria
+- [`include`](core/dbt/include/README.md): The dbt "global project," which defines default implementations of Jinja2 macros
+- [`parser`](core/dbt/parser/README.md): Read project files, validate, construct python objects
+- [`task`](core/dbt/task/README.md): Set forth the actions that dbt can perform when invoked
+
+### Invoking dbt
+
+The "tasks" map to top-level dbt commands. So `dbt run` => task.run.RunTask, etc. Some are more like abstract base classes (GraphRunnableTask, for example) but all the concrete types outside of task should map to tasks. Currently one executes at a time. The tasks kick off their “Runners” and those do execute in parallel. The parallelism is managed via a thread pool, in GraphRunnableTask.
+
+core/dbt/include/index.html
+This is the docs website code. It comes from the dbt-docs repository, and is generated when a release is packaged.
+
+## Adapters
+
+dbt uses an adapter-plugin pattern to extend support to different databases, warehouses, query engines, etc. For testing and development purposes, the dbt-postgres plugin lives alongside the dbt-core codebase, in the [`plugins`](plugins) subdirectory. Like other adapter plugins, it is a self-contained codebase and package that builds on top of dbt-core.
+
+Each adapter is a mix of python, Jinja2, and SQL. The adapter code also makes heavy use of Jinja2 to wrap modular chunks of SQL functionality, define default implementations, and allow plugins to override it.
+
+Each adapter plugin is a standalone python package that includes:
+
+- `dbt/include/[name]`: A "sub-global" dbt project, of YAML and SQL files, that reimplements Jinja macros to use the adapter's supported SQL syntax
+- `dbt/adapters/[name]`: Python modules that inherit, and optionally reimplement, the base adapter classes defined in dbt-core
+- `setup.py`
+
+The Postgres adapter code is the most central, and many of its implementations are used as the default defined in the dbt-core global project. The greater the distance of a data technology from Postgres, the more its adapter plugin may need to reimplement.
+
+## Testing dbt
+
+The [`test/`](test/) subdirectory includes unit and integration tests that run as continuous integration checks against open pull requests. Unit tests check mock inputs and outputs of specific python functions. Integration tests perform end-to-end dbt invocations against real adapters (Postgres, Redshift, Snowflake, BigQuery) and assert that the results match expectations. See [the contributing guide](CONTRIBUTING.md) for a step-by-step walkthrough of setting up a local development and testing environment.
+
+## Everything else
+
+- [docker](docker/): All dbt versions are published as Docker images on DockerHub. This subfolder contains the `Dockerfile` (constant) and `requirements.txt` (one for each version).
+- [etc](etc/): Images for README
+- [scripts](scripts/): Helper scripts for testing, releasing, and producing JSON schemas. These are not included in distributions of dbt, nor are they rigorously tested—they're just handy tools for the dbt maintainers :)

CONTRIBUTING.md

@@ -1,194 +1,229 @@
-# Getting started with dbt
+# Contributing to `dbt`
+
+1. [About this document](#about-this-document)
+2. [Proposing a change](#proposing-a-change)
+3. [Getting the code](#getting-the-code)
+4. [Setting up an environment](#setting-up-an-environment)
+5. [Running `dbt` in development](#running-dbt-in-development)
+6. [Testing](#testing)
+7. [Submitting a Pull Request](#submitting-a-pull-request)
 
 ## About this document
 
-This document is a guide intended for folks interested in contributing to dbt. It is not intended as a guide for end users of dbt (though if it is helpful, that's great!) and it assumes a certain level of familiarity with Python concepts such as virtualenvs, `pip`, python modules, filesystems, and so on. This guide also documents the process by which community-contributed Pull Requests can be incorporated into this repository. This guide assumes you are using macOS or Linux and are comfortable with the command line. If you get stuck while reading this guide, drop us a line in the #development channel on [slack](slack.getdbt.com).
+This document is a guide intended for folks interested in contributing to `dbt-core`. Below, we document the process by which members of the community should create issues and submit pull requests (PRs) in this repository. It is not intended as a guide for using `dbt-core`, and it assumes a certain level of familiarity with Python concepts such as virtualenvs, `pip`, python modules, filesystems, and so on. This guide assumes you are using macOS or Linux and are comfortable with the command line.
 
-## Contributing a change
+If you're new to python development or contributing to open-source software, we encourage you to read this document from start to finish. If you get stuck, drop us a line in the `#dbt-core-development` channel on [slack](https://community.getdbt.com).
 
-dbt is Apache 2.0-licensed open source software. dbt is the software that it is today because community members like you have opened issues, provided feedback, and contributed to the knowledge loop for the entire communtiy. Whether you are a seasoned open source contributor or a first time committer, you are welcomed and encouraged to contribute code, documentation, ideas, or problem statements to this project.
+#### Adapters
 
-### Defining the problem
-
-If you have an idea for a new feature or if you've discovered a bug in dbt, the first step is to open an issue. Please check the list of [open issues](https://github.com/fishtown-analytics/dbt/issues) before creating a new one. If you find a relevant issue, please add a comment to the open issue instead of creating a new one. There are hundreds of open issues in this repository and it can be hard to know where to look for a relevant open issue. **The dbt maintainers are always happy to point contributors in the right direction**, so please err on the side of documenting your idea in a new issue if you are unsure where a problem statement belongs.
-
-**Note:** All community-contributed Pull Requests _must_ be associated with an open issue. If you submit a Pull Request that does not pertain to an open issue, you will be asked to create an issue describing the problem before the Pull Request can be reviewed.
-
-### Discussing the idea
-
-After creating an issue, a dbt maintainer will follow up with you to explore your idea further and advise on how to implement the suggested changes. In many cases, community members will chime in with their own thoughts on the problem statement. If you as the issue creator are interested in submitting a Pull Request to address the issue, you should indicate this in the body of the issue. The dbt maintainers are _always_ happy to help contributors with the implementation of fixes and features, so please also indicate if there's anything you're unsure about or could use guidance around in the issue.
-
-### Submitting a change
-
-If the issue is appropriately well-scoped and describes a beneficial change to the dbt codebase, then anyone may submit a Pull Request to implement the functionality described in the issue (see the sections below on how to do this).
-
-In some cases, the right resolution to an open issue might be tangential to the dbt codebase. The right path forward might be a documentation update or a change that can be made in user-space. In other cases, the issue might describe functionality that the dbt maintainers are unwilling or unable to incorporate into the dbt codebase. When it is determined that an open issue describes functionality that will not translate to a code change in the dbt repository, the issue will be tagged with the `wontfix` label (see below) and closed.
-
-### Using issue labels
-
-The dbt maintainers use labels to categorize open issues. Some labels indicate the databases impacted by the issue, while others describe the domain in the dbt codebase germane to the discussion. While most of these labels are self-explanatory (eg. `snowflake` or `bigquery`), there are others that are worth describing.
-
-| tag | description |
-| --- | ----------- |
-| bug | This issue represents a defect or regression in dbt |
-| enhancement | This issue represents net-new functionality in dbt |
-| good first issue | This issue does not require deep knowledge of the dbt codebase to implement. This issue is appropriate for a first-time contributor to implement. |
-| snoozed | This issue describes a good idea, but one which will probably not be addressed in a six-month time horizon. The dbt maintainers will revist these issues periodically and re-prioritize them accordingly. |
-| triage | This is a new issue which has not yet been reviewed by a dbt maintainer. This label is removed when a maintainer reviews and responds to the issue. |
-| stale | This is an old issue which has not recently been updated. Stale issues will periodically be closed by dbt maintainers, but they can be re-opened if the discussion is restarted. |
-| wontfix | This issue does not require a code change in the dbt repository, or the maintainers are unwilling/unable to merge a Pull Request which implements the behavior described in the issue. |
+If you have an issue or code change suggestion related to a specific database [adapter](https://docs.getdbt.com/docs/available-adapters); please refer to that supported databases seperate repo for those contributions.
 
 ### Signing the CLA
 
-All contributors to dbt must sign the [Contributor License Agreement](https://docs.getdbt.com/docs/contributor-license-agreements) to have their Pull Request merged into the dbt codebase. If you are unable to sign the CLA, then the dbt maintainers will unfortunately be unable to merge your Pull Request.
+Please note that all contributors to `dbt-core` must sign the [Contributor License Agreement](https://docs.getdbt.com/docs/contributor-license-agreements) to have their Pull Request merged into the `dbt-core` codebase. If you are unable to sign the CLA, then the `dbt-core` maintainers will unfortunately be unable to merge your Pull Request. You are, however, welcome to open issues and comment on existing ones.
 
+## Proposing a change
+
+`dbt-core` is Apache 2.0-licensed open source software. `dbt-core` is what it is today because community members like you have opened issues, provided feedback, and contributed to the knowledge loop for the entire communtiy. Whether you are a seasoned open source contributor or a first-time committer, we welcome and encourage you to contribute code, documentation, ideas, or problem statements to this project.
+
+### Defining the problem
+
+If you have an idea for a new feature or if you've discovered a bug in `dbt-core`, the first step is to open an issue. Please check the list of [open issues](https://github.com/dbt-labs/dbt-core/issues) before creating a new one. If you find a relevant issue, please add a comment to the open issue instead of creating a new one. There are hundreds of open issues in this repository and it can be hard to know where to look for a relevant open issue. **The `dbt-core` maintainers are always happy to point contributors in the right direction**, so please err on the side of documenting your idea in a new issue if you are unsure where a problem statement belongs.
+
+> **Note:** All community-contributed Pull Requests _must_ be associated with an open issue. If you submit a Pull Request that does not pertain to an open issue, you will be asked to create an issue describing the problem before the Pull Request can be reviewed.
+
+### Discussing the idea
+
+After you open an issue, a `dbt-core` maintainer will follow up by commenting on your issue (usually within 1-3 days) to explore your idea further and advise on how to implement the suggested changes. In many cases, community members will chime in with their own thoughts on the problem statement. If you as the issue creator are interested in submitting a Pull Request to address the issue, you should indicate this in the body of the issue. The `dbt-core` maintainers are _always_ happy to help contributors with the implementation of fixes and features, so please also indicate if there's anything you're unsure about or could use guidance around in the issue.
+
+### Submitting a change
+
+If an issue is appropriately well scoped and describes a beneficial change to the `dbt-core` codebase, then anyone may submit a Pull Request to implement the functionality described in the issue. See the sections below on how to do this.
+
+The `dbt-core` maintainers will add a `good first issue` label if an issue is suitable for a first-time contributor. This label often means that the required code change is small, limited to one database adapter, or a net-new addition that does not impact existing functionality. You can see the list of currently open issues on the [Contribute](https://github.com/dbt-labs/dbt-core/contribute) page.
+
+Here's a good workflow:
+- Comment on the open issue, expressing your interest in contributing the required code change
+- Outline your planned implementation. If you want help getting started, ask!
+- Follow the steps outlined below to develop locally. Once you have opened a PR, one of the `dbt-core` maintainers will work with you to review your code.
+- Add a test! Tests are crucial for both fixes and new features alike. We want to make sure that code works as intended, and that it avoids any bugs  previously encountered. Currently, the best resource for understanding `dbt-core`'s [unit](test/unit) and [integration](test/integration) tests is the tests themselves. One of the maintainers can help by pointing out relevant examples.
+
+In some cases, the right resolution to an open issue might be tangential to the `dbt-core` codebase. The right path forward might be a documentation update or a change that can be made in user-space. In other cases, the issue might describe functionality that the `dbt-core` maintainers are unwilling or unable to incorporate into the `dbt-core` codebase. When it is determined that an open issue describes functionality that will not translate to a code change in the `dbt-core` repository, the issue will be tagged with the `wontfix` label (see below) and closed.
+
+### Using issue labels
+
+The `dbt-core` maintainers use labels to categorize open issues. Most labels describe the domain in the `dbt-core` codebase germane to the discussion.
+
+| tag | description |
+| --- | ----------- |
+| [triage](https://github.com/dbt-labs/dbt-core/labels/triage) | This is a new issue which has not yet been reviewed by a `dbt-core` maintainer. This label is removed when a maintainer reviews and responds to the issue. |
+| [bug](https://github.com/dbt-labs/dbt-core/labels/bug) | This issue represents a defect or regression in `dbt-core` |
+| [enhancement](https://github.com/dbt-labs/dbt-core/labels/enhancement) | This issue represents net-new functionality in `dbt-core` |
+| [good first issue](https://github.com/dbt-labs/dbt-core/labels/good%20first%20issue) | This issue does not require deep knowledge of the `dbt-core` codebase to implement. This issue is appropriate for a first-time contributor. |
+| [help wanted](https://github.com/dbt-labs/dbt-core/labels/help%20wanted) / [discussion](https://github.com/dbt-labs/dbt-core/labels/discussion) | Conversation around this issue in ongoing, and there isn't yet a clear path forward. Input from community members is most welcome. |
+| [duplicate](https://github.com/dbt-labs/dbt-core/issues/duplicate) | This issue is functionally identical to another open issue. The `dbt-core` maintainers will close this issue and encourage community members to focus conversation on the other one. |
+| [snoozed](https://github.com/dbt-labs/dbt-core/labels/snoozed) | This issue describes a good idea, but one which will probably not be addressed in a six-month time horizon. The `dbt-core` maintainers will revist these issues periodically and re-prioritize them accordingly. |
+| [stale](https://github.com/dbt-labs/dbt-core/labels/stale) | This is an old issue which has not recently been updated. Stale issues will periodically be closed by `dbt-core` maintainers, but they can be re-opened if the discussion is restarted. |
+| [wontfix](https://github.com/dbt-labs/dbt-core/labels/wontfix) | This issue does not require a code change in the `dbt-core` repository, or the maintainers are unwilling/unable to merge a Pull Request which implements the behavior described in the issue. |
+
+#### Branching Strategy
+
+`dbt-core` has three types of branches:
+
+- **Trunks** are where active development of the next release takes place. There is one trunk named `main` at the time of writing this, and will be the default branch of the repository.
+- **Release Branches** track a specific, not yet complete release of `dbt-core`. Each minor version release has a corresponding release branch. For example, the `0.11.x` series of releases has a branch called `0.11.latest`. This allows us to release new patch versions under `0.11` without necessarily needing to pull them into the latest version of `dbt-core`.
+- **Feature Branches** track individual features and fixes. On completion they should be merged into the trunk branch or a specific release branch.
 
 ## Getting the code
 
 ### Installing git
 
-You will need `git` in order to download and modify the dbt source code. On macOS, the best way to download git is to just install Xcode.
+You will need `git` in order to download and modify the `dbt-core` source code. On macOS, the best way to download git is to just install [Xcode](https://developer.apple.com/support/xcode/).
 
 ### External contributors
 
-If you are not a member of the `fishtown-analytics` GitHub organization, you can contribute to dbt by forking the dbt repository. For a detailed overview on forking, check out the [GitHub docs on forking](https://help.github.com/en/articles/fork-a-repo). In short, you will need to:
+If you are not a member of the `dbt-labs` GitHub organization, you can contribute to `dbt-core` by forking the `dbt-core` repository. For a detailed overview on forking, check out the [GitHub docs on forking](https://help.github.com/en/articles/fork-a-repo). In short, you will need to:
 
-1. fork the dbt repository
-2. clone your fork
+1. fork the `dbt-core` repository
+2. clone your fork locally
 3. check out a new branch for your proposed changes
 4. push changes to your fork
-5. open a pull request against `fishtown-analytics/dbt` from your forked repository
+5. open a pull request against `dbt-labs/dbt` from your forked repository
 
-### Core contributors
-
-If you are a member of the `fishtown-analytics` GitHub organization, you will have push access to the dbt repo. Rather than 
-forking dbt to make your changes, just clone the repository and push directly to a branch.
+### dbt Labs contributors
 
+If you are a member of the `dbt-labs` GitHub organization, you will have push access to the `dbt-core` repo. Rather than forking `dbt-core` to make your changes, just clone the repository, check out a new branch, and push directly to that branch.
 
 ## Setting up an environment
 
-To begin developing code in dbt, you should set up the following:
+There are some tools that will be helpful to you in developing locally. While this is the list relevant for `dbt-core` development, many of these tools are used commonly across open-source python projects.
 
-### virtualenv
+### Tools
 
-We strongly recommend using virtual environments when developing code in dbt. We recommend creating this virtualenv
-in the root of the dbt repository. To create a new virtualenv, run:
-```
+A short list of tools used in `dbt-core` testing that will be helpful to your understanding:
+
+- [`tox`](https://tox.readthedocs.io/en/latest/) to manage virtualenvs across python versions. We currently target the latest patch releases for Python 3.7, Python 3.8, and Python 3.9
+- [`pytest`](https://docs.pytest.org/en/latest/) to discover/run tests
+- [`make`](https://users.cs.duke.edu/~ola/courses/programming/Makefiles/Makefiles.html) - but don't worry too much, nobody _really_ understands how make works and our Makefile is super simple
+- [`flake8`](https://flake8.pycqa.org/en/latest/) for code linting
+- [`mypy`](https://mypy.readthedocs.io/en/stable/) for static type checking
+- [Github Actions](https://github.com/features/actions)
+
+A deep understanding of these tools in not required to effectively contribute to `dbt-core`, but we recommend checking out the attached documentation if you're interested in learning more about them.
+
+#### virtual environments
+
+We strongly recommend using virtual environments when developing code in `dbt-core`. We recommend creating this virtualenv
+in the root of the `dbt-core` repository. To create a new virtualenv, run:
+```sh
 python3 -m venv env
 source env/bin/activate
 ```
 
 This will create and activate a new Python virtual environment.
 
-### docker and docker-compose
+#### docker and docker-compose
 
-Docker and docker-compose are both used in testing. For macOS, the easiest thing to do is to [download docker for mac](https://store.docker.com/editions/community/docker-ce-desktop-mac). You'll need to make an account. On Linux, you can use one of the packages [here](https://docs.docker.com/install/#server). We recommend installing from docker.com instead of from your package manager. On Linux you also have to install docker-compose separately, follow [these instructions](https://docs.docker.com/compose/install/#install-compose).
+Docker and docker-compose are both used in testing. Specific instructions for you OS can be found [here](https://docs.docker.com/get-docker/).
 
 
-### Installing postgres locally (optional)
+#### postgres (optional)
 
 For testing, and later in the examples in this document, you may want to have `psql` available so you can poke around in the database and see what happened. We recommend that you use [homebrew](https://brew.sh/) for that on macOS, and your package manager on Linux. You can install any version of the postgres client that you'd like. On macOS, with homebrew setup, you can run:
 
-```
+```sh
 brew install postgresql
 ```
 
-## Running dbt in development
+## Running `dbt-core` in development
 
 ### Installation
 
-First make sure that you set up your `virtualenv` as described in section _Setting up an environment_. Next, install dbt (and it's dependencies) with:
+First make sure that you set up your `virtualenv` as described in [Setting up an environment](#setting-up-an-environment).  Also ensure you have the latest version of pip installed with `pip install --upgrade pip`. Next, install `dbt-core` (and its dependencies) with:
 
-```
-pip install -r editable_requirements.txt
+```sh
+make dev
+# or
+pip install -r dev-requirements.txt -r editable-requirements.txt
 ```
 
-When dbt is installed from source in this way, any changes you make to the dbt source code will be reflected immediately in your next `dbt` run.
+When `dbt-core` is installed this way, any changes you make to the `dbt-core` source code will be reflected immediately in your next `dbt-core` run.
 
-### Running dbt
 
-With your virtualenv activated, the `dbt` script should point back to the source code you've cloned on your machine. You can verify this by running `which dbt`. This command should show you a path to an executable in your virtualenv.
+### Running `dbt-core`
+
+With your virtualenv activated, the `dbt-core` script should point back to the source code you've cloned on your machine. You can verify this by running `which dbt`. This command should show you a path to an executable in your virtualenv.
 
 Configure your [profile](https://docs.getdbt.com/docs/configure-your-profile) as necessary to connect to your target databases. It may be a good idea to add a new profile pointing to a local postgres instance, or a specific test sandbox within your data warehouse if appropriate.
 
 ## Testing
 
-Getting the dbt integration tests set up in your local environment will be very helpful as you start to make changes to your local version of dbt. The section that follows outlines some helpful tips for setting up the test environment.
+Getting the `dbt-core` integration tests set up in your local environment will be very helpful as you start to make changes to your local version of `dbt-core`. The section that follows outlines some helpful tips for setting up the test environment.
 
-### Tools
+Although `dbt-core` works with a number of different databases, you won't need to supply credentials for every one of these databases in your test environment. Instead you can test all dbt-core code changes with Python and Postgres.
 
-A short list of tools used in dbt testing that will be helpful to your understanding:
+### Initial setup
 
-- [virtualenv](https://virtualenv.pypa.io/en/stable/) to manage dependencies
-- [tox](https://tox.readthedocs.io/en/latest/) to manage virtualenvs across python versions
-- [pytest](https://docs.pytest.org/en/latest/) to discover/run tests
-- [make](https://users.cs.duke.edu/~ola/courses/programming/Makefiles/Makefiles.html) - but don't worry too much, nobody _really_ understands how make works and our Makefile is super simple
-- [flake8](https://gitlab.com/pycqa/flake8) for code linting
-- [CircleCI](https://circleci.com/product/) and [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/)
-
-A deep understanding of these tools in not required to effectively contribute to dbt, but we recommend checking out the attached documentation if you're interested in learning more about them.
-
-
-### Running tests via Docker
-
-dbt's unit and integration tests run in Docker. Because dbt works with a number of different databases, you will need to supply credentials for one or more of these databases in your test environment. Most organizations don't have access to each of a BigQuery, Redshift, Snowflake, and Postgres database, so it's likely that you will be unable to run every integration test locally. Fortunately, Fishtown Analytics provides a CI environment with access to sandboxed Redshift, Snowflake, BigQuery, and Postgres databases. See the section on _Submitting a Pull Request_ below for more information on this CI setup.
-
-
-#### Specifying your test credentials
-
-dbt uses test credentials specified in a `test.env` file in the root of the repository. This `test.env` file is git-ignored, but please be _extra_ careful to never check in credentials or other sensitive information when developing against dbt. To create your `test.env` file, copy the provided sample file, then supply your relevant credentials:
-
-```
-cp test.env.sample test.env
-atom test.env # supply your credentials
-```
-
-We recommend starting with dbt's Postgres tests. These tests cover most of the functionality in dbt, are the fastest to run, and are the easiest to set up. dbt's test suite runs Postgres in a Docker container, so no setup should be required to run these tests. If you additionally want to test Snowflake, Bigquery, or Redshift locally you'll need to get credentials and add them to the `test.env` file. 
-
-#### Running tests
-
-dbt's unit tests and Python linter can be run with:
-
-```
-make test-unit
-```
-
-To run the Postgres + Python 3.6 integration tests, you'll have to do one extra step of setting up the test database:
+We recommend starting with `dbt-core`'s Postgres tests. These tests cover most of the functionality in `dbt-core`, are the fastest to run, and are the easiest to set up. To run the Postgres integration tests, you'll have to do one extra step of setting up the test database:
 
+```sh
+make setup-db
 ```
+or, alternatively:
+```sh
 docker-compose up -d database
 PGHOST=localhost PGUSER=root PGPASSWORD=password PGDATABASE=postgres bash test/setup_db.sh
 ```
 
-To run a quick test for Python3 integration tests on Postgres, you can run:
+### Test commands
 
+There are a few methods for running tests locally.
+
+#### Makefile
+
+There are multiple targets in the Makefile to run common test suites and code
+checks, most notably:
+
+```sh
+# Runs unit tests with py38 and code checks in parallel.
+make test
+# Runs postgres integration tests with py38 in "fail fast" mode.
+make integration
 ```
-make test-quick
+> These make targets assume you have a recent version of [`tox`](https://tox.readthedocs.io/en/latest/) installed locally,
+> unless you use choose a Docker container to run tests. Run `make help` for more info.
+
+Check out the other targets in the Makefile to see other commonly used test
+suites.
+
+#### `tox`
+
+[`tox`](https://tox.readthedocs.io/en/latest/) takes care of managing virtualenvs and install dependencies in order to run
+tests. You can also run tests in parallel, for example, you can run unit tests
+for Python 3.7, Python 3.8, Python 3.9, `flake8` checks, and `mypy` checks in
+parallel with `tox -p`. Also, you can run unit tests for specific python versions
+with `tox -e py37`. The configuration for these tests in located in `tox.ini`.
+
+#### `pytest`
+
+Finally, you can also run a specific test or group of tests using [`pytest`](https://docs.pytest.org/en/latest/) directly. With a virtualenv
+active and dev dependencies installed you can do things like:
+```sh
+# run specific postgres integration tests
+python -m pytest -m profile_postgres test/integration/001_simple_copy_test
+# run all unit tests in a file
+python -m pytest test/unit/test_graph.py
+# run a specific unit test
+python -m pytest test/unit/test_graph.py::GraphTest::test__dependency_list
 ```
+> [Here](https://docs.pytest.org/en/reorganize-docs/new-docs/user/commandlineuseful.html)
+> is a list of useful command-line options for `pytest` to use while developing.
+## Submitting a Pull Request
 
-To run tests for a specific database, invoke `tox` directly with the required flags:
-```
-# Run Postgres py36 tests
-docker-compose run test tox -e integration-postgres-py36 -- -x
+dbt Labs provides a CI environment to test changes to specific adapters, and periodic maintenance checks of `dbt-core` through Github Actions. For example, if you submit a pull request to the `dbt-redshift` repo, GitHub will trigger automated code checks and tests against Redshift.
 
-# Run Snowflake py36 tests
-docker-compose run test tox -e integration-snowflake-py36 -- -x
+A `dbt-core` maintainer will review your PR. They may suggest code revision for style or clarity, or request that you add unit or integration test(s). These are good things! We believe that, with a little bit of help, anyone can contribute high-quality code.
+- First time contributors should note code checks + unit tests require a maintainer to approve.
 
-# Run BigQuery py36 tests
-docker-compose run test tox -e integration-bigquery-py36 -- -x
 
-# Run Redshift py36 tests
-docker-compose run test tox -e integration-redshift-py36 -- -x
-```
-
-See the `Makefile` contents for more some other examples of ways to run `tox`.
-
-### Submitting a Pull Request
-
-Fishtown Analytics provides a sandboxed Redshift, Snowflake, and BigQuery database for use in a CI environment.
-
-When pull requests are submitted to the `fishtown-analytics/dbt` repo, GitHub will trigger automated tests in CircleCI and Azure Pipelines. If the PR submitter is a member of the `fishtown-analytics` GitHub organization, then the credentials for these databases will be automatically supplied as environment variables in the CI test suite.
-
-**If the PR submitter is not a member of the `fishtown-analytics` organization, then these environment variables will not be automatically supplied in the CI environment**. Once a core maintainer has taken a look at the Pull Request, they will kick off the test suite with the required credentials.
-
-Once your tests are passing and your PR has been reviewed, a dbt maintainer will merge your changes into the active development branch! And that's it! Happy developing :tada:
+Once all tests are passing and your PR has been approved, a `dbt-core` maintainer will merge your changes into the active development branch. And that's it! Happy developing :tada:

Dockerfile

@@ -1,39 +0,0 @@
-FROM ubuntu:18.04
-
-ENV DEBIAN_FRONTEND noninteractive
-ARG DOCKERIZE_VERSION=v0.6.1
-
-RUN apt-get update && \
-    apt-get dist-upgrade -y && \
-    apt-get install -y  --no-install-recommends \
-        netcat postgresql curl git ssh  software-properties-common \
-        make build-essential ca-certificates libpq-dev \
-        libsasl2-dev libsasl2-2 libsasl2-modules-gssapi-mit libyaml-dev \
-        && \
-    add-apt-repository ppa:deadsnakes/ppa && \
-    apt-get install -y \
-        python python-dev python-pip \
-        python3.6 python3.6-dev python3-pip python3.6-venv \
-        python3.7 python3.7-dev python3.7-venv \
-        python3.8 python3.8-dev python3.8-venv \
-        python3.9 python3.9-dev python3.9-venv && \
-    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-RUN useradd -mU dbt_test_user
-RUN mkdir /usr/app && chown dbt_test_user /usr/app
-RUN mkdir /home/tox && chown dbt_test_user /home/tox
-RUN curl -LO https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && \
-    tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && \
-    rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-
-WORKDIR /usr/app
-VOLUME /usr/app
-
-RUN pip3 install -U "tox==3.14.4" wheel "six>=1.14.0,<1.15.0" "virtualenv==20.0.3" setuptools
-# tox fails if the 'python' interpreter (python2) doesn't have `tox` installed
-RUN pip install -U "tox==3.14.4" "six>=1.14.0,<1.15.0" "virtualenv==20.0.3" setuptools
-
-USER dbt_test_user
-
-ENV PYTHONIOENCODING=utf-8
-ENV LANG C.UTF-8

Dockerfile.test

@@ -0,0 +1,80 @@
+##
+#  This dockerfile is used for local development and adapter testing only.
+#  See `/docker` for a generic and production-ready docker file
+##
+
+FROM ubuntu:20.04
+
+ENV DEBIAN_FRONTEND noninteractive
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+    software-properties-common \
+    && add-apt-repository ppa:git-core/ppa -y \
+    && apt-get dist-upgrade -y \
+    && apt-get install -y --no-install-recommends \
+    netcat \
+    postgresql \
+    curl \
+    git \
+    ssh \
+    software-properties-common \
+    make \
+    build-essential \
+    ca-certificates \
+    libpq-dev \
+    libsasl2-dev \
+    libsasl2-2 \
+    libsasl2-modules-gssapi-mit \
+    libyaml-dev \
+    unixodbc-dev \
+    && add-apt-repository ppa:deadsnakes/ppa \
+    && apt-get install -y \
+    python \
+    python-dev \
+    python3-pip \
+    python3.6 \
+    python3.6-dev \
+    python3-pip \
+    python3.6-venv \
+    python3.7 \
+    python3.7-dev \
+    python3.7-venv \
+    python3.8 \
+    python3.8-dev \
+    python3.8-venv \
+    python3.9 \
+    python3.9-dev \
+    python3.9-venv \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+ARG DOCKERIZE_VERSION=v0.6.1
+RUN curl -LO https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
+
+RUN pip3 install -U tox wheel six setuptools
+
+# These args are passed in via docker-compose, which reads then from the .env file.
+# On Linux, run `make .env` to create the .env file for the current user.
+# On MacOS and Windows, these can stay unset.
+ARG USER_ID
+ARG GROUP_ID
+
+RUN if [ ${USER_ID:-0} -ne 0 ] && [ ${GROUP_ID:-0} -ne 0 ]; then \
+    groupadd -g ${GROUP_ID} dbt_test_user && \
+    useradd -m -l -u ${USER_ID} -g ${GROUP_ID} dbt_test_user; \
+    else \
+    useradd -mU -l dbt_test_user; \
+    fi
+RUN mkdir /usr/app && chown dbt_test_user /usr/app
+RUN mkdir /home/tox && chown dbt_test_user /home/tox
+
+WORKDIR /usr/app
+VOLUME /usr/app
+
+USER dbt_test_user
+
+ENV PYTHONIOENCODING=utf-8
+ENV LANG C.UTF-8

License.md

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright {yyyy} {name of copyright owner}
+   Copyright 2021 dbt Labs, Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

Makefile

@@ -1,29 +1,70 @@
-.PHONY: install test test-unit test-integration
+.DEFAULT_GOAL:=help
 
-changed_tests := `git status --porcelain | grep '^\(M\| M\|A\| A\)' | awk '{ print $$2 }' | grep '\/test_[a-zA-Z_\-\.]\+.py'`
+# Optional flag to run target in a docker container.
+# (example `make test USE_DOCKER=true`)
+ifeq ($(USE_DOCKER),true)
+	DOCKER_CMD := docker-compose run --rm test
+endif
 
-install:
-	pip install -e .
+.PHONY: dev
+dev: ## Installs dbt-* packages in develop mode along with development dependencies.
+	pip install -r dev-requirements.txt -r editable-requirements.txt
 
-test:
-	@echo "Full test run starting..."
-	@time docker-compose run test tox
+.PHONY: mypy
+mypy: .env ## Runs mypy for static type checking.
+	$(DOCKER_CMD) tox -e mypy
 
-test-unit:
-	@echo "Unit test run starting..."
-	@time docker-compose run test tox -e unit-py36,flake8
+.PHONY: flake8
+flake8: .env ## Runs flake8 to enforce style guide.
+	$(DOCKER_CMD) tox -e flake8
 
-test-integration:
-	@echo "Integration test run starting..."
-	@time docker-compose run test tox -e integration-postgres-py36integration-redshift-py36,integration-snowflake-py36,integration-bigquery-py36
+.PHONY: lint
+lint: .env ## Runs all code checks in parallel.
+	$(DOCKER_CMD) tox -p -e flake8,mypy
 
-test-quick:
-	@echo "Integration test run starting..."
-	@time docker-compose run test tox -e integration-postgres-py36 -- -x
+.PHONY: unit
+unit: .env ## Runs unit tests with py38.
+	$(DOCKER_CMD) tox -e py38
 
-clean:
+.PHONY: test
+test: .env ## Runs unit tests with py38 and code checks in parallel.
+	$(DOCKER_CMD) tox -p -e py38,flake8,mypy
+
+.PHONY: integration
+integration: .env integration-postgres ## Alias for integration-postgres.
+
+.PHONY: integration-fail-fast
+integration-fail-fast: .env integration-postgres-fail-fast ## Alias for integration-postgres-fail-fast.
+
+.PHONY: integration-postgres
+integration-postgres: .env ## Runs postgres integration tests with py38.
+	$(DOCKER_CMD) tox -e py38-postgres -- -nauto
+
+.PHONY: integration-postgres-fail-fast
+integration-postgres-fail-fast: .env ## Runs postgres integration tests with py38 in "fail fast" mode.
+	$(DOCKER_CMD) tox -e py38-postgres -- -x -nauto
+
+.PHONY: setup-db
+setup-db: ## Setup Postgres database with docker-compose for system testing.
+	docker-compose up -d database
+	PGHOST=localhost PGUSER=root PGPASSWORD=password PGDATABASE=postgres bash test/setup_db.sh
+
+# This rule creates a file named .env that is used by docker-compose for passing
+# the USER_ID and GROUP_ID arguments to the Docker image.
+.env: ## Setup step for using using docker-compose with make target.
+	@touch .env
+ifneq ($(OS),Windows_NT)
+ifneq ($(shell uname -s), Darwin)
+	@echo USER_ID=$(shell id -u) > .env
+	@echo GROUP_ID=$(shell id -g) >> .env
+endif
+endif
+
+.PHONY: clean
+clean: ## Resets development environment.
 	rm -f .coverage
 	rm -rf .eggs/
+	rm -f .env
 	rm -rf .tox/
 	rm -rf build/
 	rm -rf dbt.egg-info/
@@ -34,3 +75,14 @@ clean:
 	rm -rf target/
 	find . -type f -name '*.pyc' -delete
 	find . -type d -name '__pycache__' -depth -delete
+
+.PHONY: help
+help: ## Show this help message.
+	@echo 'usage: make [target] [USE_DOCKER=true]'
+	@echo
+	@echo 'targets:'
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+	@echo
+	@echo 'options:'
+	@echo 'use USE_DOCKER=true to run target in a docker container'
+

README.md

@@ -1,28 +1,18 @@
 <p align="center">
-  <img src="https://github.com/fishtown-analytics/dbt/blob/master/etc/dbt-horizontal.png?raw=true" alt="dbt logo"/>
+  <img src="https://raw.githubusercontent.com/dbt-labs/dbt-core/fa1ea14ddfb1d5ae319d5141844910dd53ab2834/etc/dbt-core.svg" alt="dbt logo" width="750"/>
 </p>
 <p align="center">
-  <a href="https://codeclimate.com/github/fishtown-analytics/dbt">
-    <img src="https://codeclimate.com/github/fishtown-analytics/dbt/badges/gpa.svg" alt="Code Climate"/>
+  <a href="https://github.com/dbt-labs/dbt-core/actions/workflows/main.yml">
+    <img src="https://github.com/dbt-labs/dbt-core/actions/workflows/main.yml/badge.svg?event=push" alt="Unit Tests Badge"/>
   </a>
-  <a href="https://circleci.com/gh/fishtown-analytics/dbt/tree/master">
-    <img src="https://circleci.com/gh/fishtown-analytics/dbt/tree/master.svg?style=svg"  alt="CircleCI" />
-  </a>
-  <a href="https://ci.appveyor.com/project/DrewBanin/dbt/branch/development">
-    <img src="https://ci.appveyor.com/api/projects/status/v01rwd3q91jnwp9m/branch/development?svg=true" alt="AppVeyor" />
-  </a>
-  <a href="https://community.getdbt.com">
-    <img src="https://community.getdbt.com/badge.svg" alt="Slack" />
+  <a href="https://github.com/dbt-labs/dbt-core/actions/workflows/integration.yml">
+    <img src="https://github.com/dbt-labs/dbt-core/actions/workflows/integration.yml/badge.svg?event=push" alt="Integration Tests Badge"/>
   </a>
 </p>
 
-**[dbt](https://www.getdbt.com/)** (data build tool) enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications.
+**[dbt](https://www.getdbt.com/)** enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications.
 
-dbt is the T in ELT. Organize, cleanse, denormalize, filter, rename, and pre-aggregate the raw data in your warehouse so that it's ready for analysis.
-
-![dbt architecture](https://github.com/fishtown-analytics/dbt/blob/master/etc/dbt-arch.png?raw=true)
-
-dbt can be used to [aggregate pageviews into sessions](https://github.com/fishtown-analytics/snowplow), calculate [ad spend ROI](https://github.com/fishtown-analytics/facebook-ads), or report on [email campaign performance](https://github.com/fishtown-analytics/mailchimp).
+![architecture](https://raw.githubusercontent.com/dbt-labs/dbt-core/6c6649f9129d5d108aa3b0526f634cd8f3a9d1ed/etc/dbt-arch.png)
 
 ## Understanding dbt
 
@@ -30,28 +20,22 @@ Analysts using dbt can transform their data by simply writing select statements,
 
 These select statements, or "models", form a dbt project. Models frequently build on top of one another – dbt makes it easy to [manage relationships](https://docs.getdbt.com/docs/ref) between models, and [visualize these relationships](https://docs.getdbt.com/docs/documentation), as well as assure the quality of your transformations through [testing](https://docs.getdbt.com/docs/testing).
 
-![dbt dag](https://github.com/fishtown-analytics/dbt/blob/master/etc/dbt-dag.png?raw=true)
+![dbt dag](https://raw.githubusercontent.com/dbt-labs/dbt-core/6c6649f9129d5d108aa3b0526f634cd8f3a9d1ed/etc/dbt-dag.png)
 
 ## Getting started
 
--   [Install dbt](https://docs.getdbt.com/docs/installation)
--   Read the [documentation](https://docs.getdbt.com/).
--   Productionize your dbt project with [dbt Cloud](https://www.getdbt.com)
+- [Install dbt](https://docs.getdbt.com/docs/installation)
+- Read the [introduction](https://docs.getdbt.com/docs/introduction/) and [viewpoint](https://docs.getdbt.com/docs/about/viewpoint/)
 
-## Find out more
+## Join the dbt Community
 
--   Check out the [Introduction to dbt](https://docs.getdbt.com/docs/introduction/).
--   Read the [dbt Viewpoint](https://docs.getdbt.com/docs/about/viewpoint/).
-
-## Join thousands of analysts in the dbt community
-
--   Join the [chat](http://community.getdbt.com/) on Slack.
--   Find community posts on [dbt Discourse](https://discourse.getdbt.com).
+- Be part of the conversation in the [dbt Community Slack](http://community.getdbt.com/)
+- Read more on the [dbt Community Discourse](https://discourse.getdbt.com)
 
 ## Reporting bugs and contributing code
 
--   Want to report a bug or request a feature? Let us know on [Slack](http://slack.getdbt.com/), or open [an issue](https://github.com/fishtown-analytics/dbt/issues/new).
--   Want to help us build dbt? Check out the [Contributing Getting Started Guide](/CONTRIBUTING.md)
+- Want to report a bug or request a feature? Let us know on [Slack](http://community.getdbt.com/), or open [an issue](https://github.com/dbt-labs/dbt-core/issues/new)
+- Want to help us build dbt? Check out the [Contributing Guide](https://github.com/dbt-labs/dbt-core/blob/HEAD/CONTRIBUTING.md)
 
 ## Code of Conduct
 

RELEASE.md

@@ -1,92 +0,0 @@
-### Release Procedure :shipit:
-
-#### Branching Strategy
-
-dbt has three types of branches:
-
-- **Trunks** track the latest release of a minor version of dbt. Historically, we used the `master` branch as the trunk. Each minor version release has a corresponding trunk. For example, the `0.11.x` series of releases has a branch called `0.11.latest`. This allows us to release new patch versions under `0.11` without necessarily needing to pull them into the latest version of dbt.
-- **Release Branches** track a specific, not yet complete release of dbt. These releases are codenamed since we don't always know what their semantic version will be. Example: `dev/lucretia-mott` became `0.11.1`.
-- **Feature Branches** track individual features and fixes. On completion they should be merged into a release branch.
-
-#### Git & PyPI
-
-1. Update CHANGELOG.md with the most recent changes
-2. If this is a release candidate, you want to create it off of your release branch. If it's an actual release, you must first merge to a master branch. Open a Pull Request in Github to merge it into the appropriate trunk (`X.X.latest`)
-3. Bump the version using `bumpversion`:
-  - Dry run first by running `bumpversion --new-version <desired-version> <part>` and checking the diff. If it looks correct, clean up the chanages and move on:
-  - Alpha releases: `bumpversion --commit --no-tag --new-version 0.10.2a1 num`
-  - Patch releases: `bumpversion --commit --no-tag --new-version 0.10.2 patch`
-  - Minor releases: `bumpversion --commit --no-tag --new-version 0.11.0 minor`
-  - Major releases: `bumpversion --commit --no-tag --new-version 1.0.0 major`
-4. (If this is a not a release candidate) Merge to `x.x.latest` and (optionally) `master`.
-5. Update the default branch to the next dev release branch.
-6. Build source distributions for all packages by running `./scripts/build-sdists.sh`. Note that this will clean out your `dist/` folder, so if you have important stuff in there, don't run it!!!
-7. Deploy to pypi
-  - `twine upload dist/*`
-8. Deploy to homebrew (see below)
-9. Deploy to conda-forge (see below)
-10. Git release notes (points to changelog)
-11. Post to slack (point to changelog)
-
-After releasing a new version, it's important to merge the changes back into the other outstanding release branches. This avoids merge conflicts moving forward.
-
-In some cases, where the branches have diverged wildly, it's ok to skip this step. But this means that the changes you just released won't be included in future releases.
-
-#### Homebrew Release Process
-
-1. Clone the `homebrew-dbt` repository:
-
-```
-git clone git@github.com:fishtown-analytics/homebrew-dbt.git
-```
-
-2. For ALL releases (prereleases and version releases), copy the relevant formula. To copy from the latest version release of dbt, do:
-
-```bash
-cp Formula/dbt.rb Formula/dbt@{NEW-VERSION}.rb
-```
-
-To copy from a different version, simply copy the corresponding file.
-
-3. Open the file, and edit the following:
-- the name of the ruby class: this is important, homebrew won't function properly if the class name is wrong. Check historical versions to figure out the right name.
-- under the `bottle` section, remove all of the hashes (lines starting with `sha256`)
-
-4. Create a **Python 3.7** virtualenv, activate it, and then install two packages: `homebrew-pypi-poet`, and the version of dbt you are preparing. I use:
-
-```
-pyenv virtualenv 3.7.0 homebrew-dbt-{VERSION}
-pyenv activate homebrew-dbt-{VERSION}
-pip install dbt=={VERSION} homebrew-pypi-poet
-```
-
-homebrew-pypi-poet is a program that generates a valid homebrew formula for an installed pip package. You want to use it to generate a diff against the existing formula. Then you want to apply the diff for the dependency packages only -- e.g. it will tell you that `google-api-core` has been updated and that you need to use the latest version.
-
-5. reinstall, test, and audit dbt. if the test or audit fails, fix the formula with step 1.
-
-```bash
-brew uninstall --force Formula/{YOUR-FILE}.rb
-brew install Formula/{YOUR-FILE}.rb
-brew test dbt
-brew audit --strict dbt
-```
-
-6. Ask Connor to bottle the change (only his laptop can do it!)
-
-#### Conda Forge Release Process
-
-1. Clone the fork of `conda-forge/dbt-feedstock` [here](https://github.com/fishtown-analytics/dbt-feedstock)
-```bash
-git clone git@github.com:fishtown-analytics/dbt-feedstock.git
-
-```
-2. Update the version and sha256 in `recipe/meta.yml`. To calculate the sha256, run:
-
-```bash
-wget https://github.com/fishtown-analytics/dbt/archive/v{version}.tar.gz
-openssl sha256 v{version}.tar.gz
-```
-
-3. Push the changes and create a PR against `conda-forge/dbt-feedstock`
-
-4. Confirm that all automated conda-forge tests are passing

azure-pipelines.yml

@@ -1,154 +0,0 @@
-# Python package
-# Create and test a Python package on multiple Python versions.
-# Add steps that analyze code, save the dist with the build record, publish to a PyPI-compatible index, and more:
-# https://docs.microsoft.com/azure/devops/pipelines/languages/python
-
-trigger:
-  branches:
-    include:
-    - master
-    - dev/*
-    - pr/*
-
-jobs:
-- job: UnitTest
-  pool:
-    vmImage: 'vs2017-win2016'
-  steps:
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '3.7'
-      architecture: 'x64'
-
-  - script: python -m pip install --upgrade pip && pip install tox
-    displayName: 'Install dependencies'
-
-  - script: python -m tox -e pywin-unit
-    displayName: Run unit tests
-
-- job: PostgresIntegrationTest
-  pool:
-    vmImage: 'vs2017-win2016'
-  dependsOn: UnitTest
-
-  steps:
-  - pwsh: |
-      $serviceName = Get-Service -Name postgresql*
-      Set-Service -InputObject $serviceName -StartupType Automatic
-      Start-Service -InputObject $serviceName
-
-      createdb.exe -U postgres dbt
-      psql.exe  -U postgres -c "CREATE ROLE root WITH PASSWORD 'password';"
-      psql.exe  -U postgres -c "ALTER ROLE root WITH LOGIN;"
-      psql.exe  -U postgres -c "GRANT CREATE, CONNECT ON DATABASE dbt TO root WITH GRANT OPTION;"
-      psql.exe  -U postgres -c "CREATE ROLE noaccess WITH PASSWORD 'password' NOSUPERUSER;"
-      psql.exe  -U postgres -c "ALTER ROLE noaccess WITH LOGIN;"
-      psql.exe  -U postgres -c "GRANT CONNECT ON DATABASE dbt TO noaccess;"
-    displayName: Install postgresql and set up database
-
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '3.7'
-      architecture: 'x64'
-
-  - script: python -m pip install --upgrade pip && pip install tox
-    displayName: 'Install dependencies'
-
-  - script: python -m tox -e pywin-postgres
-    displayName: Run integration tests
-
-# These three are all similar except secure environment variables, which MUST be passed along to their tasks,
-# but there's probably a better way to do this!
-- job: SnowflakeIntegrationTest
-  pool:
-    vmImage: 'vs2017-win2016'
-  dependsOn: PostgresIntegrationTest
-  condition: and(succeeded(), ne(variables['SYSTEM.PULLREQUEST.ISFORK'], 'true'))
-  steps:
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '3.7'
-      architecture: 'x64'
-
-  - script: python -m pip install --upgrade pip && pip install tox
-    displayName: 'Install dependencies'
-
-  - script: python -m tox -e pywin-snowflake
-    env:
-      SNOWFLAKE_TEST_ACCOUNT: $(SNOWFLAKE_TEST_ACCOUNT)
-      SNOWFLAKE_TEST_PASSWORD: $(SNOWFLAKE_TEST_PASSWORD)
-      SNOWFLAKE_TEST_USER: $(SNOWFLAKE_TEST_USER)
-      SNOWFLAKE_TEST_WAREHOUSE: $(SNOWFLAKE_TEST_WAREHOUSE)
-      SNOWFLAKE_TEST_OAUTH_REFRESH_TOKEN: $(SNOWFLAKE_TEST_OAUTH_REFRESH_TOKEN)
-      SNOWFLAKE_TEST_OAUTH_CLIENT_ID: $(SNOWFLAKE_TEST_OAUTH_CLIENT_ID)
-      SNOWFLAKE_TEST_OAUTH_CLIENT_SECRET: $(SNOWFLAKE_TEST_OAUTH_CLIENT_SECRET)
-    displayName: Run integration tests
-
-- job: BigQueryIntegrationTest
-  pool:
-    vmImage: 'vs2017-win2016'
-  dependsOn: PostgresIntegrationTest
-  condition: and(succeeded(), ne(variables['SYSTEM.PULLREQUEST.ISFORK'], 'true'))
-  steps:
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '3.7'
-      architecture: 'x64'
-  - script: python -m pip install --upgrade pip && pip install tox
-    displayName: 'Install dependencies'
-  - script: python -m tox -e pywin-bigquery
-    env:
-      BIGQUERY_SERVICE_ACCOUNT_JSON: $(BIGQUERY_SERVICE_ACCOUNT_JSON)
-    displayName: Run integration tests
-
-- job: RedshiftIntegrationTest
-  pool:
-    vmImage: 'vs2017-win2016'
-  dependsOn: PostgresIntegrationTest
-  condition: and(succeeded(), ne(variables['SYSTEM.PULLREQUEST.ISFORK'], 'true'))
-  steps:
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '3.7'
-      architecture: 'x64'
-
-  - script: python -m pip install --upgrade pip && pip install tox
-    displayName: 'Install dependencies'
-
-  - script: python -m tox -e pywin-redshift
-    env:
-      REDSHIFT_TEST_DBNAME: $(REDSHIFT_TEST_DBNAME)
-      REDSHIFT_TEST_PASS: $(REDSHIFT_TEST_PASS)
-      REDSHIFT_TEST_USER: $(REDSHIFT_TEST_USER)
-      REDSHIFT_TEST_PORT: $(REDSHIFT_TEST_PORT)
-      REDSHIFT_TEST_HOST: $(REDSHIFT_TEST_HOST)
-    displayName: Run integration tests
-
-- job: BuildWheel
-  pool:
-    vmImage: 'vs2017-win2016'
-  dependsOn:
-    - UnitTest
-    - PostgresIntegrationTest
-    - RedshiftIntegrationTest
-    - SnowflakeIntegrationTest
-    - BigQueryIntegrationTest
-  condition: and(succeeded(), ne(variables['SYSTEM.PULLREQUEST.ISFORK'], 'true'))
-  steps:
-    - task: UsePythonVersion@0
-      inputs:
-        versionSpec: '3.7'
-        architecture: 'x64'
-    - script: python -m pip install --upgrade pip setuptools && python -m pip install -r requirements.txt && python -m pip install -r dev_requirements.txt
-      displayName: Install dependencies
-    - task: ShellScript@2
-      inputs:
-        scriptPath: scripts/build-wheels.sh
-    - task: CopyFiles@2
-      inputs:
-        contents: 'dist\?(*.whl|*.tar.gz)'
-        TargetFolder: '$(Build.ArtifactStagingDirectory)'
-    - task: PublishBuildArtifacts@1
-      inputs:
-        pathtoPublish: '$(Build.ArtifactStagingDirectory)'
-        artifactName: dists

converter.py

@@ -1,73 +0,0 @@
-#!/usr/bin/env python
-import json
-import yaml
-import sys
-import argparse
-from datetime import datetime, timezone
-import dbt.clients.registry as registry
-
-
-def yaml_type(fname):
-    with open(fname) as f:
-        return yaml.load(f)
-
-
-def parse_args():
-    parser = argparse.ArgumentParser()
-    parser.add_argument("--project", type=yaml_type, default="dbt_project.yml")
-    parser.add_argument("--namespace", required=True)
-    return parser.parse_args()
-
-
-def get_full_name(args):
-    return "{}/{}".format(args.namespace, args.project["name"])
-
-
-def init_project_in_packages(args, packages):
-    full_name = get_full_name(args)
-    if full_name not in packages:
-        packages[full_name] = {
-            "name": args.project["name"],
-            "namespace": args.namespace,
-            "latest": args.project["version"],
-            "assets": {},
-            "versions": {},
-        }
-    return packages[full_name]
-
-
-def add_version_to_package(args, project_json):
-    project_json["versions"][args.project["version"]] = {
-        "id": "{}/{}".format(get_full_name(args), args.project["version"]),
-        "name": args.project["name"],
-        "version": args.project["version"],
-        "description": "",
-        "published_at": datetime.now(timezone.utc).astimezone().isoformat(),
-        "packages": args.project.get("packages") or [],
-        "works_with": [],
-        "_source": {
-            "type": "github",
-            "url": "",
-            "readme": "",
-        },
-        "downloads": {
-            "tarball": "",
-            "format": "tgz",
-            "sha1": "",
-        },
-    }
-
-
-def main():
-    args = parse_args()
-    packages = registry.packages()
-    project_json = init_project_in_packages(args, packages)
-    if args.project["version"] in project_json["versions"]:
-        raise Exception("Version {} already in packages JSON"
-                        .format(args.project["version"]),
-                        file=sys.stderr)
-    add_version_to_package(args, project_json)
-    print(json.dumps(packages, indent=2))
-
-if __name__ == "__main__":
-    main()

core/MANIFEST.in

@@ -1 +1 @@
-recursive-include dbt/include *.py *.sql *.yml *.html *.md
+recursive-include dbt/include *.py *.sql *.yml *.html *.md .gitkeep .gitignore

core/README.md

@@ -0,0 +1,42 @@
+<p align="center">
+  <img src="https://raw.githubusercontent.com/dbt-labs/dbt-core/fa1ea14ddfb1d5ae319d5141844910dd53ab2834/etc/dbt-core.svg" alt="dbt logo" width="750"/>
+</p>
+<p align="center">
+  <a href="https://github.com/dbt-labs/dbt-core/actions/workflows/main.yml">
+    <img src="https://github.com/dbt-labs/dbt-core/actions/workflows/main.yml/badge.svg?event=push" alt="Unit Tests Badge"/>
+  </a>
+  <a href="https://github.com/dbt-labs/dbt-core/actions/workflows/integration.yml">
+    <img src="https://github.com/dbt-labs/dbt-core/actions/workflows/integration.yml/badge.svg?event=push" alt="Integration Tests Badge"/>
+  </a>
+</p>
+
+**[dbt](https://www.getdbt.com/)** enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications.
+
+![architecture](https://raw.githubusercontent.com/dbt-labs/dbt-core/6c6649f9129d5d108aa3b0526f634cd8f3a9d1ed/etc/dbt-arch.png)
+
+## Understanding dbt
+
+Analysts using dbt can transform their data by simply writing select statements, while dbt handles turning these statements into tables and views in a data warehouse.
+
+These select statements, or "models", form a dbt project. Models frequently build on top of one another – dbt makes it easy to [manage relationships](https://docs.getdbt.com/docs/ref) between models, and [visualize these relationships](https://docs.getdbt.com/docs/documentation), as well as assure the quality of your transformations through [testing](https://docs.getdbt.com/docs/testing).
+
+![dbt dag](https://raw.githubusercontent.com/dbt-labs/dbt-core/6c6649f9129d5d108aa3b0526f634cd8f3a9d1ed/etc/dbt-dag.png)
+
+## Getting started
+
+- [Install dbt](https://docs.getdbt.com/docs/installation)
+- Read the [introduction](https://docs.getdbt.com/docs/introduction/) and [viewpoint](https://docs.getdbt.com/docs/about/viewpoint/)
+
+## Join the dbt Community
+
+- Be part of the conversation in the [dbt Community Slack](http://community.getdbt.com/)
+- Read more on the [dbt Community Discourse](https://discourse.getdbt.com)
+
+## Reporting bugs and contributing code
+
+- Want to report a bug or request a feature? Let us know on [Slack](http://community.getdbt.com/), or open [an issue](https://github.com/dbt-labs/dbt-core/issues/new)
+- Want to help us build dbt? Check out the [Contributing Guide](https://github.com/dbt-labs/dbt-core/blob/HEAD/CONTRIBUTING.md)
+
+## Code of Conduct
+
+Everyone interacting in the dbt project's codebases, issue trackers, chat rooms, and mailing lists is expected to follow the [dbt Code of Conduct](https://community.getdbt.com/code-of-conduct).

core/dbt/README.md

@@ -0,0 +1,52 @@
+# core/dbt directory README
+
+## The following are individual files in this directory.
+
+### deprecations.py
+
+### flags.py		
+
+### main.py			
+
+### tracking.py		
+
+### version.py
+
+### lib.py
+
+### node_types.py
+
+### helper_types.py		
+
+### links.py		
+
+### semver.py		
+
+### ui.py
+
+### compilation.py		
+
+### dataclass_schema.py	
+
+### exceptions.py		
+
+### hooks.py		
+
+### logger.py		
+
+### profiler.py		
+
+### utils.py
+
+
+## The subdirectories will be documented in a README in the subdirectory
+* config
+* include
+* adapters
+* context
+* deps
+* graph
+* task
+* clients
+* events
+

core/dbt/adapters/README.md

@@ -0,0 +1 @@
+# Adapters README

core/dbt/adapters/base/column.py

@@ -1,14 +1,12 @@
 from dataclasses import dataclass
 import re
-
-from hologram import JsonSchemaMixin
-from dbt.exceptions import RuntimeException
-
 from typing import Dict, ClassVar, Any, Optional
 
+from dbt.exceptions import RuntimeException
+
 
 @dataclass
-class Column(JsonSchemaMixin):
+class Column:
     TYPE_LABELS: ClassVar[Dict[str, str]] = {
         'STRING': 'TEXT',
         'TIMESTAMP': 'TIMESTAMP',

core/dbt/adapters/base/connections.py

@@ -4,21 +4,32 @@ import os
 from multiprocessing.synchronize import RLock
 from threading import get_ident
 from typing import (
-    Dict, Tuple, Hashable, Optional, ContextManager, List
+    Dict, Tuple, Hashable, Optional, ContextManager, List, Union
 )
 
 import agate
 
 import dbt.exceptions
-import dbt.flags
 from dbt.contracts.connection import (
-    Connection, Identifier, ConnectionState, AdapterRequiredConfig, LazyHandle
+    Connection, Identifier, ConnectionState,
+    AdapterRequiredConfig, LazyHandle, AdapterResponse
 )
 from dbt.contracts.graph.manifest import Manifest
 from dbt.adapters.base.query_headers import (
     MacroQueryStringSetter,
 )
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.events.functions import fire_event
+from dbt.events.types import (
+    NewConnection,
+    ConnectionReused,
+    ConnectionLeftOpen,
+    ConnectionLeftOpen2,
+    ConnectionClosed,
+    ConnectionClosed2,
+    Rollback,
+    RollbackFailed
+)
+from dbt import flags
 
 
 class BaseConnectionManager(metaclass=abc.ABCMeta):
@@ -39,7 +50,7 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
     def __init__(self, profile: AdapterRequiredConfig):
         self.profile = profile
         self.thread_connections: Dict[Hashable, Connection] = {}
-        self.lock: RLock = dbt.flags.MP_CONTEXT.RLock()
+        self.lock: RLock = flags.MP_CONTEXT.RLock()
         self.query_header: Optional[MacroQueryStringSetter] = None
 
     def set_query_header(self, manifest: Manifest) -> None:
@@ -60,7 +71,7 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
                 )
             return self.thread_connections[key]
 
-    def set_thread_connection(self, conn):
+    def set_thread_connection(self, conn: Connection) -> None:
         key = self.get_thread_identifier()
         if key in self.thread_connections:
             raise dbt.exceptions.InternalException(
@@ -88,6 +99,11 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
             self.begin()
             self.commit()
 
+    def rollback_if_open(self) -> None:
+        conn = self.get_if_exists()
+        if conn is not None and conn.handle and conn.transaction_open:
+            self._rollback(conn)
+
     @abc.abstractmethod
     def exception_handler(self, sql: str) -> ContextManager:
         """Create a context manager that handles exceptions caused by database
@@ -130,19 +146,11 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
         if conn.name == conn_name and conn.state == 'open':
             return conn
 
-        logger.debug(
-            'Acquiring new {} connection "{}".'.format(self.TYPE, conn_name))
+        fire_event(NewConnection(conn_name=conn_name, conn_type=self.TYPE))
 
         if conn.state == 'open':
-            logger.debug(
-                'Re-using an available connection from the pool (formerly {}).'
-                .format(conn.name)
-            )
+            fire_event(ConnectionReused(conn_name=conn_name))
         else:
-            logger.debug(
-                'Opening a new connection, currently in state {}'
-                .format(conn.state)
-            )
             conn.handle = LazyHandle(self.open)
 
         conn.name = conn_name
@@ -176,11 +184,9 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
                 return
 
         try:
-            if conn.state == 'open':
-                if conn.transaction_open is True:
-                    self._rollback(conn)
-            else:
-                self.close(conn)
+            # always close the connection. close() calls _rollback() if there
+            # is an open transaction
+            self.close(conn)
         except Exception:
             # if rollback or close failed, remove our busted connection
             self.clear_thread_connection()
@@ -190,11 +196,9 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
         with self.lock:
             for connection in self.thread_connections.values():
                 if connection.state not in {'closed', 'init'}:
-                    logger.debug("Connection '{}' was left open."
-                                 .format(connection.name))
+                    fire_event(ConnectionLeftOpen(conn_name=connection.name))
                 else:
-                    logger.debug("Connection '{}' was properly closed."
-                                 .format(connection.name))
+                    fire_event(ConnectionClosed(conn_name=connection.name))
                 self.close(connection)
 
             # garbage collect these connections
@@ -220,54 +224,40 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
         try:
             connection.handle.rollback()
         except Exception:
-            logger.debug(
-                'Failed to rollback {}'.format(connection.name),
-                exc_info=True
-            )
+            fire_event(RollbackFailed(conn_name=connection.name))
 
     @classmethod
     def _close_handle(cls, connection: Connection) -> None:
         """Perform the actual close operation."""
         # On windows, sometimes connection handles don't have a close() attr.
         if hasattr(connection.handle, 'close'):
-            logger.debug('On {}: Close'.format(connection.name))
+            fire_event(ConnectionClosed2(conn_name=connection.name))
             connection.handle.close()
         else:
-            logger.debug('On {}: No close available on handle'
-                         .format(connection.name))
+            fire_event(ConnectionLeftOpen2(conn_name=connection.name))
 
     @classmethod
     def _rollback(cls, connection: Connection) -> None:
         """Roll back the given connection."""
-        if dbt.flags.STRICT_MODE:
-            if not isinstance(connection, Connection):
-                raise dbt.exceptions.CompilerException(
-                    f'In _rollback, got {connection} - not a Connection!'
-                )
-
         if connection.transaction_open is False:
             raise dbt.exceptions.InternalException(
-                'Tried to rollback transaction on connection "{}", but '
-                'it does not have one open!'.format(connection.name))
+                f'Tried to rollback transaction on connection '
+                f'"{connection.name}", but it does not have one open!'
+            )
 
-        logger.debug('On {}: ROLLBACK'.format(connection.name))
+        fire_event(Rollback(conn_name=connection.name))
         cls._rollback_handle(connection)
 
         connection.transaction_open = False
 
     @classmethod
     def close(cls, connection: Connection) -> Connection:
-        if dbt.flags.STRICT_MODE:
-            if not isinstance(connection, Connection):
-                raise dbt.exceptions.CompilerException(
-                    f'In close, got {connection} - not a Connection!'
-                )
-
         # if the connection is in closed or init, there's nothing to do
         if connection.state in {ConnectionState.CLOSED, ConnectionState.INIT}:
             return connection
 
         if connection.transaction_open and connection.handle:
+            fire_event(Rollback(conn_name=connection.name))
             cls._rollback_handle(connection)
         connection.transaction_open = False
 
@@ -290,7 +280,7 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
     @abc.abstractmethod
     def execute(
         self, sql: str, auto_begin: bool = False, fetch: bool = False
-    ) -> Tuple[str, agate.Table]:
+    ) -> Tuple[Union[str, AdapterResponse], agate.Table]:
         """Execute the given SQL.
 
         :param str sql: The sql to execute.
@@ -298,7 +288,7 @@ class BaseConnectionManager(metaclass=abc.ABCMeta):
             transaction, automatically begin one.
         :param bool fetch: If set, fetch results.
         :return: A tuple of the status and the results (empty if fetch=False).
-        :rtype: Tuple[str, agate.Table]
+        :rtype: Tuple[Union[str, AdapterResponse], agate.Table]
         """
         raise dbt.exceptions.NotImplementedException(
             '`execute` is not implemented for this adapter!'

core/dbt/adapters/base/impl.py

@@ -1,7 +1,6 @@
 import abc
 from concurrent.futures import as_completed, Future
 from contextlib import contextmanager
-from dataclasses import dataclass
 from datetime import datetime
 from itertools import chain
 from typing import (
@@ -17,27 +16,30 @@ from dbt.exceptions import (
     get_relation_returned_multiple_results,
     InternalException, NotImplementedException, RuntimeException,
 )
-import dbt.flags
 
-from dbt import deprecations
+from dbt.adapters.protocol import (
+    AdapterConfig,
+    ConnectionManagerProtocol,
+)
 from dbt.clients.agate_helper import empty_table, merge_tables, table_from_rows
 from dbt.clients.jinja import MacroGenerator
-from dbt.contracts.graph.compiled import CompileResultNode, CompiledSeedNode
-from dbt.contracts.graph.manifest import Manifest
+from dbt.contracts.graph.compiled import (
+    CompileResultNode, CompiledSeedNode
+)
+from dbt.contracts.graph.manifest import Manifest, MacroManifest
 from dbt.contracts.graph.parsed import ParsedSeedNode
-from dbt.contracts.graph.model_config import BaseConfig
 from dbt.exceptions import warn_or_error
-from dbt.node_types import NodeType
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.events.functions import fire_event
+from dbt.events.types import CacheMiss, ListRelations
 from dbt.utils import filter_null_values, executor
 
-from dbt.adapters.base.connections import BaseConnectionManager, Connection
+from dbt.adapters.base.connections import Connection, AdapterResponse
 from dbt.adapters.base.meta import AdapterMeta, available
 from dbt.adapters.base.relation import (
     ComponentName, BaseRelation, InformationSchema, SchemaSearchMap
 )
 from dbt.adapters.base import Column as BaseColumn
-from dbt.adapters.cache import RelationsCache
+from dbt.adapters.cache import RelationsCache, _make_key
 
 
 SeedModel = Union[ParsedSeedNode, CompiledSeedNode]
@@ -108,11 +110,6 @@ def _relation_name(rel: Optional[BaseRelation]) -> str:
         return str(rel)
 
 
-@dataclass
-class AdapterConfig(BaseConfig):
-    pass
-
-
 class BaseAdapter(metaclass=AdapterMeta):
     """The BaseAdapter provides an abstract base class for adapters.
 
@@ -151,7 +148,7 @@ class BaseAdapter(metaclass=AdapterMeta):
     """
     Relation: Type[BaseRelation] = BaseRelation
     Column: Type[BaseColumn] = BaseColumn
-    ConnectionManager: Type[BaseConnectionManager]
+    ConnectionManager: Type[ConnectionManagerProtocol]
 
     # A set of clobber config fields accepted by this adapter
     # for use in materializations
@@ -161,7 +158,7 @@ class BaseAdapter(metaclass=AdapterMeta):
         self.config = config
         self.cache = RelationsCache()
         self.connections = self.ConnectionManager(config)
-        self._internal_manifest_lazy: Optional[Manifest] = None
+        self._macro_manifest_lazy: Optional[MacroManifest] = None
 
     ###
     # Methods that pass through to the connection manager
@@ -181,6 +178,9 @@ class BaseAdapter(metaclass=AdapterMeta):
     def commit_if_has_connection(self) -> None:
         self.connections.commit_if_has_connection()
 
+    def debug_query(self) -> None:
+        self.execute('select 1 as id')
+
     def nice_connection_name(self) -> str:
         conn = self.connections.get_if_exists()
         if conn is None or conn.name is None:
@@ -211,7 +211,7 @@ class BaseAdapter(metaclass=AdapterMeta):
     @available.parse(lambda *a, **k: ('', empty_table()))
     def execute(
         self, sql: str, auto_begin: bool = False, fetch: bool = False
-    ) -> Tuple[str, agate.Table]:
+    ) -> Tuple[Union[str, AdapterResponse], agate.Table]:
         """Execute the given SQL. This is a thin wrapper around
         ConnectionManager.execute.
 
@@ -220,7 +220,7 @@ class BaseAdapter(metaclass=AdapterMeta):
             transaction, automatically begin one.
         :param bool fetch: If set, fetch results.
         :return: A tuple of the status and the results (empty if fetch=False).
-        :rtype: Tuple[str, agate.Table]
+        :rtype: Tuple[Union[str, AdapterResponse], agate.Table]
         """
         return self.connections.execute(
             sql=sql,
@@ -228,6 +228,21 @@ class BaseAdapter(metaclass=AdapterMeta):
             fetch=fetch
         )
 
+    @available.parse(lambda *a, **k: ('', empty_table()))
+    def get_partitions_metadata(
+        self, table: str
+    ) -> Tuple[agate.Table]:
+        """Obtain partitions metadata for a BigQuery partitioned table.
+
+        :param str table_id: a partitioned table id, in standard SQL format.
+        :return: a partition metadata tuple, as described in
+            https://cloud.google.com/bigquery/docs/creating-partitioned-tables#getting_partition_metadata_using_meta_tables.
+        :rtype: agate.Table
+        """
+        return self.connections.get_partitions_metadata(
+            table=table
+        )
+
     ###
     # Methods that should never be overridden
     ###
@@ -242,24 +257,30 @@ class BaseAdapter(metaclass=AdapterMeta):
         return cls.ConnectionManager.TYPE
 
     @property
-    def _internal_manifest(self) -> Manifest:
-        if self._internal_manifest_lazy is None:
-            return self.load_internal_manifest()
-        return self._internal_manifest_lazy
+    def _macro_manifest(self) -> MacroManifest:
+        if self._macro_manifest_lazy is None:
+            return self.load_macro_manifest()
+        return self._macro_manifest_lazy
 
-    def check_internal_manifest(self) -> Optional[Manifest]:
+    def check_macro_manifest(self) -> Optional[MacroManifest]:
         """Return the internal manifest (used for executing macros) if it's
         been initialized, otherwise return None.
         """
-        return self._internal_manifest_lazy
+        return self._macro_manifest_lazy
 
-    def load_internal_manifest(self) -> Manifest:
-        if self._internal_manifest_lazy is None:
+    def load_macro_manifest(self) -> MacroManifest:
+        if self._macro_manifest_lazy is None:
             # avoid a circular import
-            from dbt.parser.manifest import load_internal_manifest
-            manifest = load_internal_manifest(self.config)
-            self._internal_manifest_lazy = manifest
-        return self._internal_manifest_lazy
+            from dbt.parser.manifest import ManifestLoader
+            manifest = ManifestLoader.load_macros(
+                self.config, self.connections.set_query_header
+            )
+            self._macro_manifest_lazy = manifest
+        return self._macro_manifest_lazy
+
+    def clear_macro_manifest(self):
+        if self._macro_manifest_lazy is not None:
+            self._macro_manifest_lazy = None
 
     ###
     # Caching methods
@@ -267,12 +288,13 @@ class BaseAdapter(metaclass=AdapterMeta):
     def _schema_is_cached(self, database: Optional[str], schema: str) -> bool:
         """Check if the schema is cached, and by default logs if it is not."""
 
-        if dbt.flags.USE_CACHE is False:
-            return False
-        elif (database, schema) not in self.cache:
-            logger.debug(
-                'On "{}": cache miss for schema "{}.{}", this is inefficient'
-                .format(self.nice_connection_name(), database, schema)
+        if (database, schema) not in self.cache:
+            fire_event(
+                CacheMiss(
+                    conn_name=self.nice_connection_name(),
+                    database=database,
+                    schema=schema
+                )
             )
             return False
         else:
@@ -286,7 +308,9 @@ class BaseAdapter(metaclass=AdapterMeta):
         return {
             self.Relation.create_from(self.config, node).without_identifier()
             for node in manifest.nodes.values()
-            if node.resource_type in NodeType.executable()
+            if (
+                node.is_relational and not node.is_ephemeral_model
+            )
         }
 
     def _get_catalog_schemas(self, manifest: Manifest) -> SchemaSearchMap:
@@ -300,7 +324,9 @@ class BaseAdapter(metaclass=AdapterMeta):
         """
         info_schema_name_map = SchemaSearchMap()
         nodes: Iterator[CompileResultNode] = chain(
-            manifest.nodes.values(),
+            [node for node in manifest.nodes.values() if (
+                node.is_relational and not node.is_ephemeral_model
+            )],
             manifest.sources.values(),
         )
         for node in nodes:
@@ -312,26 +338,22 @@ class BaseAdapter(metaclass=AdapterMeta):
         # databases
         return info_schema_name_map
 
-    def _list_relations_get_connection(
-        self, schema_relation: BaseRelation
-    ) -> List[BaseRelation]:
-        name = f'list_{schema_relation.database}_{schema_relation.schema}'
-        with self.connection_named(name):
-            return self.list_relations_without_caching(schema_relation)
-
     def _relations_cache_for_schemas(self, manifest: Manifest) -> None:
         """Populate the relations cache for the given schemas. Returns an
         iterable of the schemas populated, as strings.
         """
-        if not dbt.flags.USE_CACHE:
-            return
-
         cache_schemas = self._get_cache_schemas(manifest)
         with executor(self.config) as tpe:
-            futures: List[Future[List[BaseRelation]]] = [
-                tpe.submit(self._list_relations_get_connection, cache_schema)
-                for cache_schema in cache_schemas
-            ]
+            futures: List[Future[List[BaseRelation]]] = []
+            for cache_schema in cache_schemas:
+                fut = tpe.submit_connected(
+                    self,
+                    f'list_{cache_schema.database}_{cache_schema.schema}',
+                    self.list_relations_without_caching,
+                    cache_schema
+                )
+                futures.append(fut)
+
             for future in as_completed(futures):
                 # if we can't read the relations we need to just raise anyway,
                 # so just call future.result() and let that raise on failure
@@ -352,9 +374,6 @@ class BaseAdapter(metaclass=AdapterMeta):
         """Run a query that gets a populated cache of the relations in the
         database and set the cache on this adapter.
         """
-        if not dbt.flags.USE_CACHE:
-            return
-
         with self.cache.lock:
             if clear:
                 self.cache.clear()
@@ -368,8 +387,7 @@ class BaseAdapter(metaclass=AdapterMeta):
             raise_compiler_error(
                 'Attempted to cache a null relation for {}'.format(name)
             )
-        if dbt.flags.USE_CACHE:
-            self.cache.add(relation)
+        self.cache.add(relation)
         # so jinja doesn't render things
         return ''
 
@@ -383,8 +401,7 @@ class BaseAdapter(metaclass=AdapterMeta):
             raise_compiler_error(
                 'Attempted to drop a null relation for {}'.format(name)
             )
-        if dbt.flags.USE_CACHE:
-            self.cache.drop(relation)
+        self.cache.drop(relation)
         return ''
 
     @available
@@ -405,8 +422,7 @@ class BaseAdapter(metaclass=AdapterMeta):
                 .format(src_name, dst_name, name)
             )
 
-        if dbt.flags.USE_CACHE:
-            self.cache.rename(from_relation, to_relation)
+        self.cache.rename(from_relation, to_relation)
         return ''
 
     ###
@@ -488,7 +504,7 @@ class BaseAdapter(metaclass=AdapterMeta):
     def get_columns_in_relation(
         self, relation: BaseRelation
     ) -> List[BaseColumn]:
-        """Get a list of the columns in the given Relation."""
+        """Get a list of the columns in the given Relation. """
         raise NotImplementedException(
             '`get_columns_in_relation` is not implemented for this adapter!'
         )
@@ -660,9 +676,12 @@ class BaseAdapter(metaclass=AdapterMeta):
         relations = self.list_relations_without_caching(
             schema_relation
         )
+        fire_event(ListRelations(
+            database=database,
+            schema=schema,
+            relations=[_make_key(x) for x in relations]
+        ))
 
-        logger.debug('with database={}, schema={}, relations={}'
-                     .format(database, schema, relations))
         return relations
 
     def _make_match_kwargs(
@@ -784,12 +803,11 @@ class BaseAdapter(metaclass=AdapterMeta):
     def quote_seed_column(
         self, column: str, quote_config: Optional[bool]
     ) -> str:
-        # this is the default for now
-        quote_columns: bool = False
+        quote_columns: bool = True
         if isinstance(quote_config, bool):
             quote_columns = quote_config
         elif quote_config is None:
-            deprecations.warn('column-quoting-unset')
+            pass
         else:
             raise_compiler_error(
                 f'The seed configuration value of "quote_columns" has an '
@@ -921,7 +939,6 @@ class BaseAdapter(metaclass=AdapterMeta):
         project: Optional[str] = None,
         context_override: Optional[Dict[str, Any]] = None,
         kwargs: Dict[str, Any] = None,
-        release: bool = False,
         text_only_columns: Optional[Iterable[str]] = None,
     ) -> agate.Table:
         """Look macro_name up in the manifest and execute its results.
@@ -935,15 +952,15 @@ class BaseAdapter(metaclass=AdapterMeta):
             execution context.
         :param kwargs: An optional dict of keyword args used to pass to the
             macro.
-        :param release: If True, release the connection after executing.
         """
+
         if kwargs is None:
             kwargs = {}
         if context_override is None:
             context_override = {}
 
         if manifest is None:
-            manifest = self._internal_manifest
+            manifest = self._macro_manifest
 
         macro = manifest.find_macro_by_name(
             macro_name, self.config.project_name, project
@@ -958,10 +975,10 @@ class BaseAdapter(metaclass=AdapterMeta):
                 'dbt could not find a macro with the name "{}" in {}'
                 .format(macro_name, package_name)
             )
-        # This causes a reference cycle, as generate_runtime_macro()
+        # This causes a reference cycle, as generate_runtime_macro_context()
         # ends up calling get_adapter, so the import has to be here.
-        from dbt.context.providers import generate_runtime_macro
-        macro_context = generate_runtime_macro(
+        from dbt.context.providers import generate_runtime_macro_context
+        macro_context = generate_runtime_macro_context(
             macro=macro,
             config=self.config,
             manifest=manifest,
@@ -972,11 +989,7 @@ class BaseAdapter(metaclass=AdapterMeta):
         macro_function = MacroGenerator(macro, macro_context)
 
         with self.connections.exception_handler(f'macro {macro_name}'):
-            try:
-                result = macro_function(**kwargs)
-            finally:
-                if release:
-                    self.release_connection()
+            result = macro_function(**kwargs)
         return result
 
     @classmethod
@@ -1001,24 +1014,17 @@ class BaseAdapter(metaclass=AdapterMeta):
         manifest: Manifest,
     ) -> agate.Table:
 
-        name = '.'.join([
-            str(information_schema.database),
-            'information_schema'
-        ])
-
-        with self.connection_named(name):
-            kwargs = {
-                'information_schema': information_schema,
-                'schemas': schemas
-            }
-            table = self.execute_macro(
-                GET_CATALOG_MACRO_NAME,
-                kwargs=kwargs,
-                release=True,
-                # pass in the full manifest so we get any local project
-                # overrides
-                manifest=manifest,
-            )
+        kwargs = {
+            'information_schema': information_schema,
+            'schemas': schemas
+        }
+        table = self.execute_macro(
+            GET_CATALOG_MACRO_NAME,
+            kwargs=kwargs,
+            # pass in the full manifest so we get any local project
+            # overrides
+            manifest=manifest,
+        )
 
         results = self._catalog_filter_table(table, manifest)
         return results
@@ -1029,10 +1035,21 @@ class BaseAdapter(metaclass=AdapterMeta):
         schema_map = self._get_catalog_schemas(manifest)
 
         with executor(self.config) as tpe:
-            futures: List[Future[agate.Table]] = [
-                tpe.submit(self._get_one_catalog, info, schemas, manifest)
-                for info, schemas in schema_map.items() if len(schemas) > 0
-            ]
+            futures: List[Future[agate.Table]] = []
+            for info, schemas in schema_map.items():
+                if len(schemas) == 0:
+                    continue
+                name = '.'.join([
+                    str(info.database),
+                    'information_schema'
+                ])
+
+                fut = tpe.submit_connected(
+                    self, name,
+                    self._get_one_catalog, info, schemas, manifest
+                )
+                futures.append(fut)
+
             catalogs, exceptions = catch_as_completed(futures)
 
         return catalogs, exceptions
@@ -1059,7 +1076,6 @@ class BaseAdapter(metaclass=AdapterMeta):
         table = self.execute_macro(
             FRESHNESS_MACRO_NAME,
             kwargs=kwargs,
-            release=True,
             manifest=manifest
         )
         # now we have a 1-row table of the maximum `loaded_at_field` value and
@@ -1110,6 +1126,102 @@ class BaseAdapter(metaclass=AdapterMeta):
         """
         pass
 
+    def get_compiler(self):
+        from dbt.compilation import Compiler
+        return Compiler(self.config)
+
+    # Methods used in adapter tests
+    def update_column_sql(
+        self,
+        dst_name: str,
+        dst_column: str,
+        clause: str,
+        where_clause: Optional[str] = None,
+    ) -> str:
+        clause = f'update {dst_name} set {dst_column} = {clause}'
+        if where_clause is not None:
+            clause += f' where {where_clause}'
+        return clause
+
+    def timestamp_add_sql(
+        self, add_to: str, number: int = 1, interval: str = 'hour'
+    ) -> str:
+        # for backwards compatibility, we're compelled to set some sort of
+        # default. A lot of searching has lead me to believe that the
+        # '+ interval' syntax used in postgres/redshift is relatively common
+        # and might even be the SQL standard's intention.
+        return f"{add_to} + interval '{number} {interval}'"
+
+    def string_add_sql(
+        self, add_to: str, value: str, location='append',
+    ) -> str:
+        if location == 'append':
+            return f"{add_to} || '{value}'"
+        elif location == 'prepend':
+            return f"'{value}' || {add_to}"
+        else:
+            raise RuntimeException(
+                f'Got an unexpected location value of "{location}"'
+            )
+
+    def get_rows_different_sql(
+        self,
+        relation_a: BaseRelation,
+        relation_b: BaseRelation,
+        column_names: Optional[List[str]] = None,
+        except_operator: str = 'EXCEPT',
+    ) -> str:
+        """Generate SQL for a query that returns a single row with a two
+        columns: the number of rows that are different between the two
+        relations and the number of mismatched rows.
+        """
+        # This method only really exists for test reasons.
+        names: List[str]
+        if column_names is None:
+            columns = self.get_columns_in_relation(relation_a)
+            names = sorted((self.quote(c.name) for c in columns))
+        else:
+            names = sorted((self.quote(n) for n in column_names))
+        columns_csv = ', '.join(names)
+
+        sql = COLUMNS_EQUAL_SQL.format(
+            columns=columns_csv,
+            relation_a=str(relation_a),
+            relation_b=str(relation_b),
+            except_op=except_operator,
+        )
+
+        return sql
+
+
+COLUMNS_EQUAL_SQL = '''
+with diff_count as (
+    SELECT
+        1 as id,
+        COUNT(*) as num_missing FROM (
+            (SELECT {columns} FROM {relation_a} {except_op}
+             SELECT {columns} FROM {relation_b})
+             UNION ALL
+            (SELECT {columns} FROM {relation_b} {except_op}
+             SELECT {columns} FROM {relation_a})
+        ) as a
+), table_a as (
+    SELECT COUNT(*) as num_rows FROM {relation_a}
+), table_b as (
+    SELECT COUNT(*) as num_rows FROM {relation_b}
+), row_count_diff as (
+    select
+        1 as id,
+        table_a.num_rows - table_b.num_rows as difference
+    from table_a, table_b
+)
+select
+    row_count_diff.difference as row_count_difference,
+    diff_count.num_missing as num_mismatched
+from row_count_diff
+join diff_count using (id)
+'''.strip()
+
 
 def catch_as_completed(
     futures  # typing: List[Future[agate.Table]]

core/dbt/adapters/base/plugin.py

@@ -1,7 +1,19 @@
 from typing import List, Optional, Type
 
-from dbt.adapters.base import BaseAdapter, Credentials
+from dbt.adapters.base import Credentials
 from dbt.exceptions import CompilationException
+from dbt.adapters.protocol import AdapterProtocol
+
+
+def project_name_from_path(include_path: str) -> str:
+    # avoid an import cycle
+    from dbt.config.project import Project
+    partial = Project.partial_load(include_path)
+    if partial.project_name is None:
+        raise CompilationException(
+            f'Invalid project at {include_path}: name not set!'
+        )
+    return partial.project_name
 
 
 class AdapterPlugin:
@@ -13,23 +25,16 @@ class AdapterPlugin:
     """
     def __init__(
         self,
-        adapter: Type[BaseAdapter],
+        adapter: Type[AdapterProtocol],
         credentials: Type[Credentials],
         include_path: str,
         dependencies: Optional[List[str]] = None
     ):
-        # avoid an import cycle
-        from dbt.config.project import Project
 
-        self.adapter: Type[BaseAdapter] = adapter
+        self.adapter: Type[AdapterProtocol] = adapter
         self.credentials: Type[Credentials] = credentials
         self.include_path: str = include_path
-        partial = Project.partial_load(include_path)
-        if partial.project_name is None:
-            raise CompilationException(
-                f'Invalid project at {include_path}: name not set!'
-            )
-        self.project_name: str = partial.project_name
+        self.project_name: str = project_name_from_path(include_path)
         self.dependencies: List[str]
         if dependencies is None:
             self.dependencies = []

core/dbt/adapters/base/query_headers.py

@@ -3,7 +3,7 @@ from typing import Optional, Callable, Dict, Any
 
 from dbt.clients.jinja import QueryStringGenerator
 
-from dbt.context.configured import generate_query_header_context
+from dbt.context.manifest import generate_query_header_context
 from dbt.contracts.connection import AdapterRequiredConfig, QueryComment
 from dbt.contracts.graph.compiled import CompileResultNode
 from dbt.contracts.graph.manifest import Manifest

core/dbt/adapters/base/relation.py

@@ -1,132 +1,19 @@
-from dbt.utils import filter_null_values, deep_merge, classproperty
-from dbt.node_types import NodeType
-
-import dbt.exceptions
-
-from collections.abc import Mapping, Hashable
-from dataclasses import dataclass, fields
+from collections.abc import Hashable
+from dataclasses import dataclass
 from typing import (
-    Optional, TypeVar, Generic, Any, Type, Dict, Union, Iterator, Tuple,
-    Set
+    Optional, TypeVar, Any, Type, Dict, Union, Iterator, Tuple, Set
 )
-from typing_extensions import Protocol
 
-from hologram import JsonSchemaMixin
-from hologram.helpers import StrEnum
-
-from dbt.contracts.util import Replaceable
 from dbt.contracts.graph.compiled import CompiledNode
 from dbt.contracts.graph.parsed import ParsedSourceDefinition, ParsedNode
+from dbt.contracts.relation import (
+    RelationType, ComponentName, HasQuoting, FakeAPIObject, Policy, Path
+)
 from dbt.exceptions import InternalException
-from dbt import deprecations
+from dbt.node_types import NodeType
+from dbt.utils import filter_null_values, deep_merge, classproperty
 
-
-class RelationType(StrEnum):
-    Table = 'table'
-    View = 'view'
-    CTE = 'cte'
-    MaterializedView = 'materializedview'
-    External = 'external'
-
-
-class ComponentName(StrEnum):
-    Database = 'database'
-    Schema = 'schema'
-    Identifier = 'identifier'
-
-
-class HasQuoting(Protocol):
-    quoting: Dict[str, bool]
-
-
-class FakeAPIObject(JsonSchemaMixin, Replaceable, Mapping):
-    # override the mapping truthiness, len is always >1
-    def __bool__(self):
-        return True
-
-    def __getitem__(self, key):
-        try:
-            return getattr(self, key)
-        except AttributeError:
-            raise KeyError(key) from None
-
-    def __iter__(self):
-        deprecations.warn('not-a-dictionary', obj=self)
-        for _, name in self._get_fields():
-            yield name
-
-    def __len__(self):
-        deprecations.warn('not-a-dictionary', obj=self)
-        return len(fields(self.__class__))
-
-    def incorporate(self, **kwargs):
-        value = self.to_dict()
-        value = deep_merge(value, kwargs)
-        return self.from_dict(value)
-
-
-T = TypeVar('T')
-
-
-@dataclass
-class _ComponentObject(FakeAPIObject, Generic[T]):
-    database: T
-    schema: T
-    identifier: T
-
-    def get_part(self, key: ComponentName) -> T:
-        if key == ComponentName.Database:
-            return self.database
-        elif key == ComponentName.Schema:
-            return self.schema
-        elif key == ComponentName.Identifier:
-            return self.identifier
-        else:
-            raise ValueError(
-                'Got a key of {}, expected one of {}'
-                .format(key, list(ComponentName))
-            )
-
-    def replace_dict(self, dct: Dict[ComponentName, T]):
-        kwargs: Dict[str, T] = {}
-        for k, v in dct.items():
-            kwargs[str(k)] = v
-        return self.replace(**kwargs)
-
-
-@dataclass
-class Policy(_ComponentObject[bool]):
-    database: bool = True
-    schema: bool = True
-    identifier: bool = True
-
-
-@dataclass
-class Path(_ComponentObject[Optional[str]]):
-    database: Optional[str]
-    schema: Optional[str]
-    identifier: Optional[str]
-
-    def __post_init__(self):
-        # handle pesky jinja2.Undefined sneaking in here and messing up render
-        if not isinstance(self.database, (type(None), str)):
-            raise dbt.exceptions.CompilationException(
-                'Got an invalid path database: {}'.format(self.database)
-            )
-        if not isinstance(self.schema, (type(None), str)):
-            raise dbt.exceptions.CompilationException(
-                'Got an invalid path schema: {}'.format(self.schema)
-            )
-        if not isinstance(self.identifier, (type(None), str)):
-            raise dbt.exceptions.CompilationException(
-                'Got an invalid path identifier: {}'.format(self.identifier)
-            )
-
-    def get_lowered_part(self, key: ComponentName) -> Optional[str]:
-        part = self.get_part(key)
-        if part is not None:
-            part = part.lower()
-        return part
+import dbt.exceptions
 
 
 Self = TypeVar('Self', bound='BaseRelation')
@@ -134,8 +21,8 @@ Self = TypeVar('Self', bound='BaseRelation')
 
 @dataclass(frozen=True, eq=False, repr=False)
 class BaseRelation(FakeAPIObject, Hashable):
-    type: Optional[RelationType]
     path: Path
+    type: Optional[RelationType] = None
     quote_character: str = '"'
     include_policy: Policy = Policy()
     quote_policy: Policy = Policy()
@@ -158,12 +45,16 @@ class BaseRelation(FakeAPIObject, Hashable):
     def __eq__(self, other):
         if not isinstance(other, self.__class__):
             return False
-        return self.to_dict() == other.to_dict()
+        return self.to_dict(omit_none=True) == other.to_dict(omit_none=True)
 
     @classmethod
-    def get_default_quote_policy(cls: Type[Self]) -> Policy:
+    def get_default_quote_policy(cls) -> Policy:
         return cls._get_field_named('quote_policy').default
 
+    @classmethod
+    def get_default_include_policy(cls) -> Policy:
+        return cls._get_field_named('include_policy').default
+
     def get(self, key, default=None):
         """Override `.get` to return a metadata object so we don't break
         dbt_utils.
@@ -198,7 +89,10 @@ class BaseRelation(FakeAPIObject, Hashable):
             if not self._is_exactish_match(k, v):
                 exact_match = False
 
-            if self.path.get_lowered_part(k) != v.lower():
+            if (
+                self.path.get_lowered_part(k).strip(self.quote_character) !=
+                v.lower().strip(self.quote_character)
+            ):
                 approximate_match = False
 
         if approximate_match and not exact_match:
@@ -294,10 +188,10 @@ class BaseRelation(FakeAPIObject, Hashable):
     def create_from_source(
         cls: Type[Self], source: ParsedSourceDefinition, **kwargs: Any
     ) -> Self:
-        source_quoting = source.quoting.to_dict()
+        source_quoting = source.quoting.to_dict(omit_none=True)
         source_quoting.pop('column', None)
         quote_policy = deep_merge(
-            cls.get_default_quote_policy().to_dict(),
+            cls.get_default_quote_policy().to_dict(omit_none=True),
             source_quoting,
             kwargs.get('quote_policy', {}),
         )
@@ -310,6 +204,23 @@ class BaseRelation(FakeAPIObject, Hashable):
             **kwargs
         )
 
+    @staticmethod
+    def add_ephemeral_prefix(name: str):
+        return f'__dbt__cte__{name}'
+
+    @classmethod
+    def create_ephemeral_from_node(
+        cls: Type[Self],
+        config: HasQuoting,
+        node: Union[ParsedNode, CompiledNode],
+    ) -> Self:
+        # Note that ephemeral models are based on the name.
+        identifier = cls.add_ephemeral_prefix(node.name)
+        return cls.create(
+            type=cls.CTE,
+            identifier=identifier,
+        ).quote(identifier=False)
+
     @classmethod
     def create_from_node(
         cls: Type[Self],
@@ -525,13 +436,14 @@ class SchemaSearchMap(Dict[InformationSchema, Set[Optional[str]]]):
             for schema in schemas:
                 yield information_schema_name, schema
 
-    def flatten(self):
+    def flatten(self, allow_multiple_databases: bool = False):
         new = self.__class__()
 
-        # make sure we don't have duplicates
-        seen = {r.database.lower() for r in self if r.database}
-        if len(seen) > 1:
-            dbt.exceptions.raise_compiler_error(str(seen))
+        # make sure we don't have multiple databases if allow_multiple_databases is set to False
+        if not allow_multiple_databases:
+            seen = {r.database.lower() for r in self if r.database}
+            if len(seen) > 1:
+                dbt.exceptions.raise_compiler_error(str(seen))
 
         for information_schema_name, schema in self.search():
             path = {

core/dbt/adapters/cache.py

@@ -1,23 +1,27 @@
-from collections import namedtuple
-from copy import deepcopy
-from typing import List, Iterable, Optional, Dict, Set, Tuple, Any
 import threading
+from copy import deepcopy
+from typing import Any, Dict, Iterable, List, Optional, Set, Tuple
 
-from dbt.logger import CACHE_LOGGER as logger
-from dbt.utils import lowercase
+from dbt.adapters.reference_keys import _make_key, _ReferenceKey
 import dbt.exceptions
-
-_ReferenceKey = namedtuple('_ReferenceKey', 'database schema identifier')
-
-
-def _make_key(relation) -> _ReferenceKey:
-    """Make _ReferenceKeys with lowercase values for the cache so we don't have
-    to keep track of quoting
-    """
-    # databases and schemas can both be None
-    return _ReferenceKey(lowercase(relation.database),
-                         lowercase(relation.schema),
-                         lowercase(relation.identifier))
+from dbt.events.functions import fire_event
+from dbt.events.types import (
+    AddLink,
+    AddRelation,
+    DropCascade,
+    DropMissingRelation,
+    DropRelation,
+    DumpAfterAddGraph,
+    DumpAfterRenameSchema,
+    DumpBeforeAddGraph,
+    DumpBeforeRenameSchema,
+    RenameSchema,
+    TemporaryRelation,
+    UncachedRelation,
+    UpdateReference
+)
+from dbt.utils import lowercase
+from dbt.helper_types import Lazy
 
 
 def dot_separated(key: _ReferenceKey) -> str:
@@ -157,12 +161,6 @@ class _CachedRelation:
         return [dot_separated(r) for r in self.referenced_by]
 
 
-def lazy_log(msg, func):
-    if logger.disabled:
-        return
-    logger.debug(msg.format(func()))
-
-
 class RelationsCache:
     """A cache of the relations known to dbt. Keeps track of relationships
     declared between tables and handles renames/drops as a real database would.
@@ -278,6 +276,7 @@ class RelationsCache:
 
         referenced.add_reference(dependent)
 
+    # TODO: Is this dead code?  I can't seem to find it grepping the codebase.
     def add_link(self, referenced, dependent):
         """Add a link between two relations to the database. If either relation
         does not exist, it will be added as an "external" relation.
@@ -293,15 +292,12 @@ class RelationsCache:
         :raises InternalError: If either entry does not exist.
         """
         ref_key = _make_key(referenced)
+        dep_key = _make_key(dependent)
         if (ref_key.database, ref_key.schema) not in self:
             # if we have not cached the referenced schema at all, we must be
             # referring to a table outside our control. There's no need to make
             # a link - we will never drop the referenced relation during a run.
-            logger.debug(
-                '{dep!s} references {ref!s} but {ref.database}.{ref.schema} '
-                'is not in the cache, skipping assumed external relation'
-                .format(dep=dependent, ref=ref_key)
-            )
+            fire_event(UncachedRelation(dep_key=dep_key, ref_key=ref_key))
             return
         if ref_key not in self.relations:
             # Insert a dummy "external" relation.
@@ -309,17 +305,13 @@ class RelationsCache:
                 type=referenced.External
             )
             self.add(referenced)
-
-        dep_key = _make_key(dependent)
         if dep_key not in self.relations:
             # Insert a dummy "external" relation.
             dependent = dependent.replace(
                 type=referenced.External
             )
             self.add(dependent)
-        logger.debug(
-            'adding link, {!s} references {!s}'.format(dep_key, ref_key)
-        )
+        fire_event(AddLink(dep_key=dep_key, ref_key=ref_key))
         with self.lock:
             self._add_link(ref_key, dep_key)
 
@@ -330,14 +322,12 @@ class RelationsCache:
         :param BaseRelation relation: The underlying relation.
         """
         cached = _CachedRelation(relation)
-        logger.debug('Adding relation: {!s}'.format(cached))
-
-        lazy_log('before adding: {!s}', self.dump_graph)
+        fire_event(AddRelation(relation=_make_key(cached)))
+        fire_event(DumpBeforeAddGraph(dump=Lazy.defer(lambda: self.dump_graph())))
 
         with self.lock:
             self._setdefault(cached)
-
-        lazy_log('after adding: {!s}', self.dump_graph)
+        fire_event(DumpAfterAddGraph(dump=Lazy.defer(lambda: self.dump_graph())))
 
     def _remove_refs(self, keys):
         """Removes all references to all entries in keys. This does not
@@ -352,20 +342,17 @@ class RelationsCache:
         for cached in self.relations.values():
             cached.release_references(keys)
 
-    def _drop_cascade_relation(self, dropped):
+    def _drop_cascade_relation(self, dropped_key):
         """Drop the given relation and cascade it appropriately to all
         dependent relations.
 
         :param _CachedRelation dropped: An existing _CachedRelation to drop.
         """
-        if dropped not in self.relations:
-            logger.debug('dropped a nonexistent relationship: {!s}'
-                         .format(dropped))
+        if dropped_key not in self.relations:
+            fire_event(DropMissingRelation(relation=dropped_key))
             return
-        consequences = self.relations[dropped].collect_consequences()
-        logger.debug(
-            'drop {} is cascading to {}'.format(dropped, consequences)
-        )
+        consequences = self.relations[dropped_key].collect_consequences()
+        fire_event(DropCascade(dropped=dropped_key, consequences=consequences))
         self._remove_refs(consequences)
 
     def drop(self, relation):
@@ -379,10 +366,10 @@ class RelationsCache:
         :param str schema: The schema of the relation to drop.
         :param str identifier: The identifier of the relation to drop.
         """
-        dropped = _make_key(relation)
-        logger.debug('Dropping relation: {!s}'.format(dropped))
+        dropped_key = _make_key(relation)
+        fire_event(DropRelation(dropped=dropped_key))
         with self.lock:
-            self._drop_cascade_relation(dropped)
+            self._drop_cascade_relation(dropped_key)
 
     def _rename_relation(self, old_key, new_relation):
         """Rename a relation named old_key to new_key, updating references.
@@ -403,9 +390,8 @@ class RelationsCache:
         # update all the relations that refer to it
         for cached in self.relations.values():
             if cached.is_referenced_by(old_key):
-                logger.debug(
-                    'updated reference from {0} -> {2} to {1} -> {2}'
-                    .format(old_key, new_key, cached.key())
+                fire_event(
+                    UpdateReference(old_key=old_key, new_key=new_key, cached_key=cached.key())
                 )
                 cached.rename_key(old_key, new_key)
 
@@ -435,10 +421,7 @@ class RelationsCache:
             )
 
         if old_key not in self.relations:
-            logger.debug(
-                'old key {} not found in self.relations, assuming temporary'
-                .format(old_key)
-            )
+            fire_event(TemporaryRelation(key=old_key))
             return False
         return True
 
@@ -456,11 +439,9 @@ class RelationsCache:
         """
         old_key = _make_key(old)
         new_key = _make_key(new)
-        logger.debug('Renaming relation {!s} to {!s}'.format(
-            old_key, new_key
-        ))
+        fire_event(RenameSchema(old_key=old_key, new_key=new_key))
 
-        lazy_log('before rename: {!s}', self.dump_graph)
+        fire_event(DumpBeforeRenameSchema(dump=Lazy.defer(lambda: self.dump_graph())))
 
         with self.lock:
             if self._check_rename_constraints(old_key, new_key):
@@ -468,7 +449,7 @@ class RelationsCache:
             else:
                 self._setdefault(_CachedRelation(new))
 
-        lazy_log('after rename: {!s}', self.dump_graph)
+        fire_event(DumpAfterRenameSchema(dump=Lazy.defer(lambda: self.dump_graph())))
 
     def get_relations(
         self, database: Optional[str], schema: Optional[str]

core/dbt/adapters/factory.py

@@ -1,42 +1,51 @@
 import threading
+from pathlib import Path
 from importlib import import_module
-from typing import Type, Dict, Any
+from typing import Type, Dict, Any, List, Optional, Set
 
-from dbt.exceptions import RuntimeException
-from dbt.include.global_project import PACKAGES
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.exceptions import RuntimeException, InternalException
+from dbt.include.global_project import (
+    PACKAGE_PATH as GLOBAL_PROJECT_PATH,
+    PROJECT_NAME as GLOBAL_PROJECT_NAME,
+)
+from dbt.events.functions import fire_event
+from dbt.events.types import AdapterImportError, PluginLoadError
 from dbt.contracts.connection import Credentials, AdapterRequiredConfig
-
-from dbt.adapters.base.impl import BaseAdapter, AdapterConfig
+from dbt.adapters.protocol import (
+    AdapterProtocol,
+    AdapterConfig,
+    RelationProtocol,
+)
 from dbt.adapters.base.plugin import AdapterPlugin
 
 
-# TODO: we can't import these because they cause an import cycle.
-# Profile has to call into load_plugin to get credentials, so adapter/relation
-# don't work
-BaseRelation = Any
+Adapter = AdapterProtocol
 
 
-Adapter = BaseAdapter
-
-
-class AdpaterContainer:
+class AdapterContainer:
     def __init__(self):
         self.lock = threading.Lock()
         self.adapters: Dict[str, Adapter] = {}
-        self.adapter_types: Dict[str, Type[Adapter]] = {}
+        self.plugins: Dict[str, AdapterPlugin] = {}
+        # map package names to their include paths
+        self.packages: Dict[str, Path] = {
+            GLOBAL_PROJECT_NAME: Path(GLOBAL_PROJECT_PATH),
+        }
 
-    def get_adapter_class_by_name(self, name: str) -> Type[Adapter]:
+    def get_plugin_by_name(self, name: str) -> AdapterPlugin:
         with self.lock:
-            if name in self.adapter_types:
-                return self.adapter_types[name]
-
-            names = ", ".join(self.adapter_types.keys())
+            if name in self.plugins:
+                return self.plugins[name]
+            names = ", ".join(self.plugins.keys())
 
         message = f"Invalid adapter type {name}! Must be one of {names}"
         raise RuntimeException(message)
 
-    def get_relation_class_by_name(self, name: str) -> Type[BaseRelation]:
+    def get_adapter_class_by_name(self, name: str) -> Type[Adapter]:
+        plugin = self.get_plugin_by_name(name)
+        return plugin.adapter
+
+    def get_relation_class_by_name(self, name: str) -> Type[RelationProtocol]:
         adapter = self.get_adapter_class_by_name(name)
         return adapter.Relation
 
@@ -47,7 +56,7 @@ class AdpaterContainer:
         return adapter.AdapterSpecificConfigs
 
     def load_plugin(self, name: str) -> Type[Credentials]:
-        # this doesn't need a lock: in the worst case we'll overwrite PACKAGES
+        # this doesn't need a lock: in the worst case we'll overwrite packages
         # and adapter_type entries with the same value, as they're all
         # singletons
         try:
@@ -57,11 +66,12 @@ class AdpaterContainer:
             # if we failed to import the target module in particular, inform
             # the user about it via a runtime error
             if exc.name == 'dbt.adapters.' + name:
+                fire_event(AdapterImportError(exc=exc))
                 raise RuntimeException(f'Could not find adapter type {name}!')
-            logger.info(f'Error importing adapter: {exc}')
             # otherwise, the error had to have come from some underlying
             # library. Log the stack trace.
-            logger.debug('', exc_info=True)
+
+            fire_event(PluginLoadError())
             raise
         plugin: AdapterPlugin = mod.Plugin
         plugin_type = plugin.adapter.type()
@@ -74,9 +84,9 @@ class AdpaterContainer:
 
         with self.lock:
             # things do hold the lock to iterate over it so we need it to add
-            self.adapter_types[name] = plugin.adapter
+            self.plugins[name] = plugin
 
-        PACKAGES[plugin.project_name] = plugin.include_path
+        self.packages[plugin.project_name] = Path(plugin.include_path)
 
         for dep in plugin.dependencies:
             self.load_plugin(dep)
@@ -114,8 +124,58 @@ class AdpaterContainer:
             for adapter in self.adapters.values():
                 adapter.cleanup_connections()
 
+    def get_adapter_plugins(self, name: Optional[str]) -> List[AdapterPlugin]:
+        """Iterate over the known adapter plugins. If a name is provided,
+        iterate in dependency order over the named plugin and its dependencies.
+        """
+        if name is None:
+            return list(self.plugins.values())
 
-FACTORY: AdpaterContainer = AdpaterContainer()
+        plugins: List[AdapterPlugin] = []
+        seen: Set[str] = set()
+        plugin_names: List[str] = [name]
+        while plugin_names:
+            plugin_name = plugin_names[0]
+            plugin_names = plugin_names[1:]
+            try:
+                plugin = self.plugins[plugin_name]
+            except KeyError:
+                raise InternalException(
+                    f'No plugin found for {plugin_name}'
+                ) from None
+            plugins.append(plugin)
+            seen.add(plugin_name)
+            if plugin.dependencies is None:
+                continue
+            for dep in plugin.dependencies:
+                if dep not in seen:
+                    plugin_names.append(dep)
+        return plugins
+
+    def get_adapter_package_names(self, name: Optional[str]) -> List[str]:
+        package_names: List[str] = [
+            p.project_name for p in self.get_adapter_plugins(name)
+        ]
+        package_names.append(GLOBAL_PROJECT_NAME)
+        return package_names
+
+    def get_include_paths(self, name: Optional[str]) -> List[Path]:
+        paths = []
+        for package_name in self.get_adapter_package_names(name):
+            try:
+                path = self.packages[package_name]
+            except KeyError:
+                raise InternalException(
+                    f'No internal package listing found for {package_name}'
+                )
+            paths.append(path)
+        return paths
+
+    def get_adapter_type_names(self, name: Optional[str]) -> List[str]:
+        return [p.adapter.type() for p in self.get_adapter_plugins(name)]
+
+
+FACTORY: AdapterContainer = AdapterContainer()
 
 
 def register_adapter(config: AdapterRequiredConfig) -> None:
@@ -139,7 +199,7 @@ def cleanup_connections():
     FACTORY.cleanup_connections()
 
 
-def get_adapter_class_by_name(name: str) -> Type[BaseAdapter]:
+def get_adapter_class_by_name(name: str) -> Type[AdapterProtocol]:
     return FACTORY.get_adapter_class_by_name(name)
 
 
@@ -147,9 +207,21 @@ def get_config_class_by_name(name: str) -> Type[AdapterConfig]:
     return FACTORY.get_config_class_by_name(name)
 
 
-def get_relation_class_by_name(name: str) -> Type[BaseRelation]:
+def get_relation_class_by_name(name: str) -> Type[RelationProtocol]:
     return FACTORY.get_relation_class_by_name(name)
 
 
 def load_plugin(name: str) -> Type[Credentials]:
     return FACTORY.load_plugin(name)
+
+
+def get_include_paths(name: Optional[str]) -> List[Path]:
+    return FACTORY.get_include_paths(name)
+
+
+def get_adapter_package_names(name: Optional[str]) -> List[str]:
+    return FACTORY.get_adapter_package_names(name)
+
+
+def get_adapter_type_names(name: Optional[str]) -> List[str]:
+    return FACTORY.get_adapter_type_names(name)

core/dbt/adapters/protocol.py

@@ -0,0 +1,163 @@
+from dataclasses import dataclass
+from typing import (
+    Type, Hashable, Optional, ContextManager, List, Generic, TypeVar, ClassVar,
+    Tuple, Union, Dict, Any
+)
+from typing_extensions import Protocol
+
+import agate
+
+from dbt.contracts.connection import (
+    Connection, AdapterRequiredConfig, AdapterResponse
+)
+from dbt.contracts.graph.compiled import (
+    CompiledNode, ManifestNode, NonSourceCompiledNode
+)
+from dbt.contracts.graph.parsed import ParsedNode, ParsedSourceDefinition
+from dbt.contracts.graph.model_config import BaseConfig
+from dbt.contracts.graph.manifest import Manifest
+from dbt.contracts.relation import Policy, HasQuoting
+
+from dbt.graph import Graph
+
+
+@dataclass
+class AdapterConfig(BaseConfig):
+    pass
+
+
+class ConnectionManagerProtocol(Protocol):
+    TYPE: str
+
+
+class ColumnProtocol(Protocol):
+    pass
+
+
+Self = TypeVar('Self', bound='RelationProtocol')
+
+
+class RelationProtocol(Protocol):
+    @classmethod
+    def get_default_quote_policy(cls) -> Policy:
+        ...
+
+    @classmethod
+    def create_from(
+        cls: Type[Self],
+        config: HasQuoting,
+        node: Union[CompiledNode, ParsedNode, ParsedSourceDefinition],
+    ) -> Self:
+        ...
+
+
+class CompilerProtocol(Protocol):
+    def compile(self, manifest: Manifest, write=True) -> Graph:
+        ...
+
+    def compile_node(
+        self,
+        node: ManifestNode,
+        manifest: Manifest,
+        extra_context: Optional[Dict[str, Any]] = None,
+    ) -> NonSourceCompiledNode:
+        ...
+
+
+AdapterConfig_T = TypeVar(
+    'AdapterConfig_T', bound=AdapterConfig
+)
+ConnectionManager_T = TypeVar(
+    'ConnectionManager_T', bound=ConnectionManagerProtocol
+)
+Relation_T = TypeVar(
+    'Relation_T', bound=RelationProtocol
+)
+Column_T = TypeVar(
+    'Column_T', bound=ColumnProtocol
+)
+Compiler_T = TypeVar('Compiler_T', bound=CompilerProtocol)
+
+
+class AdapterProtocol(
+    Protocol,
+    Generic[
+        AdapterConfig_T,
+        ConnectionManager_T,
+        Relation_T,
+        Column_T,
+        Compiler_T,
+    ]
+):
+    AdapterSpecificConfigs: ClassVar[Type[AdapterConfig_T]]
+    Column: ClassVar[Type[Column_T]]
+    Relation: ClassVar[Type[Relation_T]]
+    ConnectionManager: ClassVar[Type[ConnectionManager_T]]
+    connections: ConnectionManager_T
+
+    def __init__(self, config: AdapterRequiredConfig):
+        ...
+
+    @classmethod
+    def type(cls) -> str:
+        pass
+
+    def set_query_header(self, manifest: Manifest) -> None:
+        ...
+
+    @staticmethod
+    def get_thread_identifier() -> Hashable:
+        ...
+
+    def get_thread_connection(self) -> Connection:
+        ...
+
+    def set_thread_connection(self, conn: Connection) -> None:
+        ...
+
+    def get_if_exists(self) -> Optional[Connection]:
+        ...
+
+    def clear_thread_connection(self) -> None:
+        ...
+
+    def clear_transaction(self) -> None:
+        ...
+
+    def exception_handler(self, sql: str) -> ContextManager:
+        ...
+
+    def set_connection_name(self, name: Optional[str] = None) -> Connection:
+        ...
+
+    def cancel_open(self) -> Optional[List[str]]:
+        ...
+
+    def open(cls, connection: Connection) -> Connection:
+        ...
+
+    def release(self) -> None:
+        ...
+
+    def cleanup_all(self) -> None:
+        ...
+
+    def begin(self) -> None:
+        ...
+
+    def commit(self) -> None:
+        ...
+
+    def close(cls, connection: Connection) -> Connection:
+        ...
+
+    def commit_if_has_connection(self) -> None:
+        ...
+
+    def execute(
+        self, sql: str, auto_begin: bool = False, fetch: bool = False
+    ) -> Tuple[Union[str, AdapterResponse], agate.Table]:
+        ...
+
+    def get_compiler(self) -> Compiler_T:
+        ...

core/dbt/adapters/reference_keys.py

@@ -0,0 +1,24 @@
+# this module exists to resolve circular imports with the events module
+
+from collections import namedtuple
+from typing import Optional
+
+
+_ReferenceKey = namedtuple('_ReferenceKey', 'database schema identifier')
+
+
+def lowercase(value: Optional[str]) -> Optional[str]:
+    if value is None:
+        return None
+    else:
+        return value.lower()
+
+
+def _make_key(relation) -> _ReferenceKey:
+    """Make _ReferenceKeys with lowercase values for the cache so we don't have
+    to keep track of quoting
+    """
+    # databases and schemas can both be None
+    return _ReferenceKey(lowercase(relation.database),
+                         lowercase(relation.schema),
+                         lowercase(relation.identifier))

core/dbt/adapters/sql/connections.py

@@ -1,14 +1,17 @@
 import abc
 import time
-from typing import List, Optional, Tuple, Any, Iterable, Dict
+from typing import List, Optional, Tuple, Any, Iterable, Dict, Union
 
 import agate
 
 import dbt.clients.agate_helper
 import dbt.exceptions
-from dbt.contracts.connection import Connection
 from dbt.adapters.base import BaseConnectionManager
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.contracts.connection import (
+    Connection, ConnectionState, AdapterResponse
+)
+from dbt.events.functions import fire_event
+from dbt.events.types import ConnectionUsed, SQLQuery, SQLCommit, SQLQueryStatus
 
 
 class SQLConnectionManager(BaseConnectionManager):
@@ -17,7 +20,7 @@ class SQLConnectionManager(BaseConnectionManager):
     Methods to implement:
         - exception_handler
         - cancel
-        - get_status
+        - get_response
         - open
     """
     @abc.abstractmethod
@@ -37,7 +40,10 @@ class SQLConnectionManager(BaseConnectionManager):
 
                 # if the connection failed, the handle will be None so we have
                 # nothing to cancel.
-                if connection.handle is not None:
+                if (
+                    connection.handle is not None and
+                    connection.state == ConnectionState.OPEN
+                ):
                     self.cancel(connection)
                 if connection.name is not None:
                     names.append(connection.name)
@@ -53,9 +59,7 @@ class SQLConnectionManager(BaseConnectionManager):
         connection = self.get_thread_connection()
         if auto_begin and connection.transaction_open is False:
             self.begin()
-
-        logger.debug('Using {} connection "{}".'
-                     .format(self.TYPE, connection.name))
+        fire_event(ConnectionUsed(conn_type=self.TYPE, conn_name=connection.name))
 
         with self.exception_handler(sql):
             if abridge_sql_log:
@@ -63,29 +67,26 @@ class SQLConnectionManager(BaseConnectionManager):
             else:
                 log_sql = sql
 
-            logger.debug(
-                'On {connection_name}: {sql}',
-                connection_name=connection.name,
-                sql=log_sql,
-            )
+            fire_event(SQLQuery(conn_name=connection.name, sql=log_sql))
             pre = time.time()
 
             cursor = connection.handle.cursor()
             cursor.execute(sql, bindings)
 
-            logger.debug(
-                "SQL status: {status} in {elapsed:0.2f} seconds",
-                status=self.get_status(cursor),
-                elapsed=(time.time() - pre)
+            fire_event(
+                SQLQueryStatus(
+                    status=str(self.get_response(cursor)),
+                    elapsed=round((time.time() - pre), 2)
+                )
             )
 
             return connection, cursor
 
     @abc.abstractclassmethod
-    def get_status(cls, cursor: Any) -> str:
+    def get_response(cls, cursor: Any) -> Union[AdapterResponse, str]:
         """Get the status of the cursor."""
         raise dbt.exceptions.NotImplementedException(
-            '`get_status` is not implemented for this adapter!'
+            '`get_response` is not implemented for this adapter!'
         )
 
     @classmethod
@@ -94,7 +95,14 @@ class SQLConnectionManager(BaseConnectionManager):
         column_names: Iterable[str],
         rows: Iterable[Any]
     ) -> List[Dict[str, Any]]:
-
+        unique_col_names = dict()
+        for idx in range(len(column_names)):
+            col_name = column_names[idx]
+            if col_name in unique_col_names:
+                unique_col_names[col_name] += 1
+                column_names[idx] = f'{col_name}_{unique_col_names[col_name]}'
+            else:
+                unique_col_names[column_names[idx]] = 1
         return [dict(zip(column_names, row)) for row in rows]
 
     @classmethod
@@ -114,15 +122,15 @@ class SQLConnectionManager(BaseConnectionManager):
 
     def execute(
         self, sql: str, auto_begin: bool = False, fetch: bool = False
-    ) -> Tuple[str, agate.Table]:
+    ) -> Tuple[Union[AdapterResponse, str], agate.Table]:
         sql = self._add_query_comment(sql)
         _, cursor = self.add_query(sql, auto_begin)
-        status = self.get_status(cursor)
+        response = self.get_response(cursor)
         if fetch:
             table = self.get_result_from_cursor(cursor)
         else:
             table = dbt.clients.agate_helper.empty_table()
-        return status, table
+        return response, table
 
     def add_begin_query(self):
         return self.add_query('BEGIN', auto_begin=False)
@@ -132,13 +140,6 @@ class SQLConnectionManager(BaseConnectionManager):
 
     def begin(self):
         connection = self.get_thread_connection()
-
-        if dbt.flags.STRICT_MODE:
-            if not isinstance(connection, Connection):
-                raise dbt.exceptions.CompilerException(
-                    f'In begin, got {connection} - not a Connection!'
-                )
-
         if connection.transaction_open is True:
             raise dbt.exceptions.InternalException(
                 'Tried to begin a new transaction on connection "{}", but '
@@ -151,18 +152,12 @@ class SQLConnectionManager(BaseConnectionManager):
 
     def commit(self):
         connection = self.get_thread_connection()
-        if dbt.flags.STRICT_MODE:
-            if not isinstance(connection, Connection):
-                raise dbt.exceptions.CompilerException(
-                    f'In commit, got {connection} - not a Connection!'
-                )
-
         if connection.transaction_open is False:
             raise dbt.exceptions.InternalException(
                 'Tried to commit transaction on connection "{}", but '
                 'it does not have one open!'.format(connection.name))
 
-        logger.debug('On {}: COMMIT'.format(connection.name))
+        fire_event(SQLCommit(conn_name=connection.name))
         self.add_commit_query()
 
         connection.transaction_open = False

core/dbt/adapters/sql/impl.py

@@ -4,12 +4,14 @@ from typing import Any, Optional, Tuple, Type, List
 import dbt.clients.agate_helper
 from dbt.contracts.connection import Connection
 import dbt.exceptions
-import dbt.flags
 from dbt.adapters.base import BaseAdapter, available
+from dbt.adapters.cache import _make_key
 from dbt.adapters.sql import SQLConnectionManager
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.events.functions import fire_event
+from dbt.events.types import ColTypeChange, SchemaCreation, SchemaDrop
 
-from dbt.adapters.factory import BaseRelation
+
+from dbt.adapters.base.relation import BaseRelation
 
 LIST_RELATIONS_MACRO_NAME = 'list_relations_without_caching'
 GET_COLUMNS_IN_RELATION_MACRO_NAME = 'get_columns_in_relation'
@@ -117,8 +119,13 @@ class SQLAdapter(BaseAdapter):
                target_column.can_expand_to(reference_column):
                 col_string_size = reference_column.string_size()
                 new_type = self.Column.string_type(col_string_size)
-                logger.debug("Changing col type from {} to {} in table {}",
-                             target_column.data_type, new_type, current)
+                fire_event(
+                    ColTypeChange(
+                        orig_type=target_column.data_type,
+                        new_type=new_type,
+                        table=_make_key(current),
+                    )
+                )
 
                 self.alter_column_type(current, column_name, new_type)
 
@@ -176,7 +183,7 @@ class SQLAdapter(BaseAdapter):
 
     def create_schema(self, relation: BaseRelation) -> None:
         relation = relation.without_identifier()
-        logger.debug('Creating schema "{}"', relation)
+        fire_event(SchemaCreation(relation=_make_key(relation)))
         kwargs = {
             'relation': relation,
         }
@@ -187,7 +194,7 @@ class SQLAdapter(BaseAdapter):
 
     def drop_schema(self, relation: BaseRelation) -> None:
         relation = relation.without_identifier()
-        logger.debug('Dropping schema "{}".', relation)
+        fire_event(SchemaDrop(relation=_make_key(relation)))
         kwargs = {
             'relation': relation,
         }

core/dbt/clients/README.md

@@ -0,0 +1 @@
+# Clients README

core/dbt/clients/agate_helper.py

@@ -13,6 +13,18 @@ from dbt.exceptions import RuntimeException
 BOM = BOM_UTF8.decode('utf-8')  # '\ufeff'
 
 
+class Number(agate.data_types.Number):
+    # undo the change in https://github.com/wireservice/agate/pull/733
+    # i.e. do not cast True and False to numeric 1 and 0
+    def cast(self, d):
+        if type(d) == bool:
+            raise agate.exceptions.CastError(
+                'Do not cast True to 1 or False to 0.'
+            )
+        else:
+            return super().cast(d)
+
+
 class ISODateTime(agate.data_types.DateTime):
     def cast(self, d):
         # this is agate.data_types.DateTime.cast with the "clever" bits removed
@@ -35,9 +47,13 @@ class ISODateTime(agate.data_types.DateTime):
         )
 
 
-def build_type_tester(text_columns: Iterable[str]) -> agate.TypeTester:
+def build_type_tester(
+    text_columns: Iterable[str],
+    string_null_values: Optional[Iterable[str]] = ('null', '')
+) -> agate.TypeTester:
+
     types = [
-        agate.data_types.Number(null_values=('null', '')),
+        Number(null_values=('null', '')),
         agate.data_types.Date(null_values=('null', ''),
                               date_format='%Y-%m-%d'),
         agate.data_types.DateTime(null_values=('null', ''),
@@ -46,10 +62,10 @@ def build_type_tester(text_columns: Iterable[str]) -> agate.TypeTester:
         agate.data_types.Boolean(true_values=('true',),
                                  false_values=('false',),
                                  null_values=('null', '')),
-        agate.data_types.Text(null_values=('null', ''))
+        agate.data_types.Text(null_values=string_null_values)
     ]
     force = {
-        k: agate.data_types.Text(null_values=('null', ''))
+        k: agate.data_types.Text(null_values=string_null_values)
         for k in text_columns
     }
     return agate.TypeTester(force=force, types=types)
@@ -66,7 +82,13 @@ def table_from_rows(
     if text_only_columns is None:
         column_types = DEFAULT_TYPE_TESTER
     else:
-        column_types = build_type_tester(text_only_columns)
+        # If text_only_columns are present, prevent coercing empty string or
+        # literal 'null' strings to a None representation.
+        column_types = build_type_tester(
+            text_only_columns,
+            string_null_values=()
+        )
+
     return agate.Table(rows, column_names, column_types=column_types)
 
 
@@ -86,19 +108,34 @@ def table_from_data(data, column_names: Iterable[str]) -> agate.Table:
 
 
 def table_from_data_flat(data, column_names: Iterable[str]) -> agate.Table:
-    "Convert list of dictionaries into an Agate table"
+    """
+    Convert a list of dictionaries into an Agate table. This method does not
+    coerce string values into more specific types (eg. '005' will not be
+    coerced to '5'). Additionally, this method does not coerce values to
+    None (eg. '' or 'null' will retain their string literal representations).
+    """
 
     rows = []
+    text_only_columns = set()
     for _row in data:
         row = []
-        for value in list(_row.values()):
+        for col_name in column_names:
+            value = _row[col_name]
             if isinstance(value, (dict, list, tuple)):
-                row.append(json.dumps(value, cls=dbt.utils.JSONEncoder))
-            else:
-                row.append(value)
+                # Represent container types as json strings
+                value = json.dumps(value, cls=dbt.utils.JSONEncoder)
+                text_only_columns.add(col_name)
+            elif isinstance(value, str):
+                text_only_columns.add(col_name)
+            row.append(value)
+
         rows.append(row)
 
-    return table_from_rows(rows=rows, column_names=column_names)
+    return table_from_rows(
+        rows=rows,
+        column_names=column_names,
+        text_only_columns=text_only_columns
+    )
 
 
 def empty_table():

core/dbt/clients/gcloud.py

@@ -1,26 +0,0 @@
-from dbt.logger import GLOBAL_LOGGER as logger
-import dbt.exceptions
-from dbt.clients.system import run_cmd
-
-NOT_INSTALLED_MSG = """
-dbt requires the gcloud SDK to be installed to authenticate with BigQuery.
-Please download and install the SDK, or use a Service Account instead.
-
-https://cloud.google.com/sdk/
-"""
-
-
-def gcloud_installed():
-    try:
-        run_cmd('.', ['gcloud', '--version'])
-        return True
-    except OSError as e:
-        logger.debug(e)
-        return False
-
-
-def setup_default_credentials():
-    if gcloud_installed():
-        run_cmd('.', ["gcloud", "auth", "application-default", "login"])
-    else:
-        raise dbt.exceptions.RuntimeException(NOT_INSTALLED_MSG)

core/dbt/clients/git.py

@@ -2,22 +2,70 @@ import re
 import os.path
 
 from dbt.clients.system import run_cmd, rmdir
-from dbt.logger import GLOBAL_LOGGER as logger
-import dbt.exceptions
+from dbt.events.functions import fire_event
+from dbt.events.types import (
+    GitSparseCheckoutSubdirectory, GitProgressCheckoutRevision,
+    GitProgressUpdatingExistingDependency, GitProgressPullingNewDependency,
+    GitNothingToDo, GitProgressUpdatedCheckoutRange, GitProgressCheckedOutAt
+)
+from dbt.exceptions import (
+    CommandResultError, RuntimeException, bad_package_spec, raise_git_cloning_error,
+    raise_git_cloning_problem
+)
+from packaging import version
 
 
-def clone(repo, cwd, dirname=None, remove_git_dir=False, branch=None):
+def _is_commit(revision: str) -> bool:
+    # match SHA-1 git commit
+    return bool(re.match(r"\b[0-9a-f]{40}\b", revision))
+
+
+def _raise_git_cloning_error(repo, revision, error):
+    stderr = error.stderr.decode('utf-8').strip()
+    if 'usage: git' in stderr:
+        stderr = stderr.split('\nusage: git')[0]
+    if re.match("fatal: destination path '(.+)' already exists", stderr):
+        raise_git_cloning_error(error)
+
+    bad_package_spec(repo, revision, stderr)
+
+
+def clone(repo, cwd, dirname=None, remove_git_dir=False, revision=None, subdirectory=None):
+    has_revision = revision is not None
+    is_commit = _is_commit(revision or "")
+
     clone_cmd = ['git', 'clone', '--depth', '1']
+    if subdirectory:
+        fire_event(GitSparseCheckoutSubdirectory(subdir=subdirectory))
+        out, _ = run_cmd(cwd, ['git', '--version'], env={'LC_ALL': 'C'})
+        git_version = version.parse(re.search(r"\d+\.\d+\.\d+", out.decode("utf-8")).group(0))
+        if not git_version >= version.parse("2.25.0"):
+            # 2.25.0 introduces --sparse
+            raise RuntimeError(
+                "Please update your git version to pull a dbt package "
+                "from a subdirectory: your version is {}, >= 2.25.0 needed".format(git_version)
+            )
+        clone_cmd.extend(['--filter=blob:none', '--sparse'])
 
-    if branch is not None:
-        clone_cmd.extend(['--branch', branch])
+    if has_revision and not is_commit:
+        clone_cmd.extend(['--branch', revision])
 
     clone_cmd.append(repo)
 
     if dirname is not None:
         clone_cmd.append(dirname)
+    try:
+        result = run_cmd(cwd, clone_cmd, env={'LC_ALL': 'C'})
+    except CommandResultError as exc:
+        _raise_git_cloning_error(repo, revision, exc)
 
-    result = run_cmd(cwd, clone_cmd, env={'LC_ALL': 'C'})
+    if subdirectory:
+        cwd_subdir = os.path.join(cwd, dirname or '')
+        clone_cmd_subdir = ['git', 'sparse-checkout', 'set', subdirectory]
+        try:
+            run_cmd(cwd_subdir, clone_cmd_subdir)
+        except CommandResultError as exc:
+            _raise_git_cloning_error(repo, revision, exc)
 
     if remove_git_dir:
         rmdir(os.path.join(dirname, '.git'))
@@ -31,33 +79,38 @@ def list_tags(cwd):
     return tags
 
 
-def _checkout(cwd, repo, branch):
-    logger.debug('  Checking out branch {}.'.format(branch))
+def _checkout(cwd, repo, revision):
+    fire_event(GitProgressCheckoutRevision(revision=revision))
 
-    run_cmd(cwd, ['git', 'remote', 'set-branches', 'origin', branch])
-    run_cmd(cwd, ['git', 'fetch', '--tags', '--depth', '1', 'origin', branch])
+    fetch_cmd = ["git", "fetch", "origin", "--depth", "1"]
 
-    tags = list_tags(cwd)
-
-    # Prefer tags to branches if one exists
-    if branch in tags:
-        spec = 'tags/{}'.format(branch)
+    if _is_commit(revision):
+        run_cmd(cwd, fetch_cmd + [revision])
     else:
-        spec = 'origin/{}'.format(branch)
+        run_cmd(cwd, ['git', 'remote', 'set-branches', 'origin', revision])
+        run_cmd(cwd, fetch_cmd + ["--tags", revision])
+
+    if _is_commit(revision):
+        spec = revision
+    # Prefer tags to branches if one exists
+    elif revision in list_tags(cwd):
+        spec = 'tags/{}'.format(revision)
+    else:
+        spec = 'origin/{}'.format(revision)
 
     out, err = run_cmd(cwd, ['git', 'reset', '--hard', spec],
                        env={'LC_ALL': 'C'})
     return out, err
 
 
-def checkout(cwd, repo, branch=None):
-    if branch is None:
-        branch = 'master'
+def checkout(cwd, repo, revision=None):
+    if revision is None:
+        revision = 'HEAD'
     try:
-        return _checkout(cwd, repo, branch)
-    except dbt.exceptions.CommandResultError as exc:
+        return _checkout(cwd, repo, revision)
+    except CommandResultError as exc:
         stderr = exc.stderr.decode('utf-8').strip()
-    dbt.exceptions.bad_package_spec(repo, branch, stderr)
+    bad_package_spec(repo, revision, stderr)
 
 
 def get_current_sha(cwd):
@@ -71,40 +124,46 @@ def remove_remote(cwd):
 
 
 def clone_and_checkout(repo, cwd, dirname=None, remove_git_dir=False,
-                       branch=None):
+                       revision=None, subdirectory=None):
     exists = None
     try:
-        _, err = clone(repo, cwd, dirname=dirname,
-                       remove_git_dir=remove_git_dir)
-    except dbt.exceptions.CommandResultError as exc:
+        _, err = clone(
+            repo,
+            cwd,
+            dirname=dirname,
+            remove_git_dir=remove_git_dir,
+            subdirectory=subdirectory,
+        )
+    except CommandResultError as exc:
         err = exc.stderr.decode('utf-8')
         exists = re.match("fatal: destination path '(.+)' already exists", err)
-        if not exists:  # something else is wrong, raise it
-            raise
+        if not exists:
+            raise_git_cloning_problem(repo)
 
     directory = None
     start_sha = None
     if exists:
         directory = exists.group(1)
-        logger.debug('Updating existing dependency {}.', directory)
+        fire_event(GitProgressUpdatingExistingDependency(dir=directory))
     else:
         matches = re.match("Cloning into '(.+)'", err.decode('utf-8'))
         if matches is None:
-            raise dbt.exceptions.RuntimeException(
+            raise RuntimeException(
                 f'Error cloning {repo} - never saw "Cloning into ..." from git'
             )
         directory = matches.group(1)
-        logger.debug('Pulling new dependency {}.', directory)
+        fire_event(GitProgressPullingNewDependency(dir=directory))
     full_path = os.path.join(cwd, directory)
     start_sha = get_current_sha(full_path)
-    checkout(full_path, repo, branch)
+    checkout(full_path, repo, revision)
     end_sha = get_current_sha(full_path)
     if exists:
         if start_sha == end_sha:
-            logger.debug('  Already at {}, nothing to do.', start_sha[:7])
+            fire_event(GitNothingToDo(sha=start_sha[:7]))
         else:
-            logger.debug('  Updated checkout from {} to {}.',
-                         start_sha[:7], end_sha[:7])
+            fire_event(GitProgressUpdatedCheckoutRange(
+                start_sha=start_sha[:7], end_sha=end_sha[:7]
+            ))
     else:
-        logger.debug('  Checked out at {}.', end_sha[:7])
-    return directory
+        fire_event(GitProgressCheckedOutAt(end_sha=end_sha[:7]))
+    return os.path.join(directory, subdirectory or '')

core/dbt/clients/jinja.py

@@ -21,18 +21,18 @@ import jinja2.sandbox
 
 from dbt.utils import (
     get_dbt_macro_name, get_docs_macro_name, get_materialization_macro_name,
-    deep_map
+    get_test_macro_name, deep_map_render
 )
 
 from dbt.clients._jinja_blocks import BlockIterator, BlockData, BlockTag
-from dbt.contracts.graph.compiled import CompiledSchemaTestNode
-from dbt.contracts.graph.parsed import ParsedSchemaTestNode
+from dbt.contracts.graph.compiled import CompiledGenericTestNode
+from dbt.contracts.graph.parsed import ParsedGenericTestNode
 from dbt.exceptions import (
     InternalException, raise_compiler_error, CompilationException,
-    invalid_materialization_argument, MacroReturn, JinjaRenderingException
+    invalid_materialization_argument, MacroReturn, JinjaRenderingException,
+    UndefinedMacroException
 )
-from dbt.flags import MACRO_DEBUGGING
-from dbt.logger import GLOBAL_LOGGER as logger  # noqa
+from dbt import flags
 
 
 def _linecache_inject(source, write):
@@ -94,8 +94,8 @@ class MacroFuzzEnvironment(jinja2.sandbox.SandboxedEnvironment):
         If the value is 'write', also write the files to disk.
         WARNING: This can write a ton of data if you aren't careful.
         """
-        if filename == '<template>' and MACRO_DEBUGGING:
-            write = MACRO_DEBUGGING == 'write'
+        if filename == '<template>' and flags.MACRO_DEBUGGING:
+            write = flags.MACRO_DEBUGGING == 'write'
             filename = _linecache_inject(source, write)
 
         return super()._compile(source, filename)  # type: ignore
@@ -231,6 +231,7 @@ class BaseMacroGenerator:
         template = self.get_template()
         # make the module. previously we set both vars and local, but that's
         # redundant: They both end up in the same place
+        # make_module is in jinja2.environment. It returns a TemplateModule
         module = template.make_module(vars=self.context, shared=False)
         macro = module.__dict__[get_dbt_macro_name(name)]
         module.__dict__.update(self.context)
@@ -244,6 +245,7 @@ class BaseMacroGenerator:
             raise_compiler_error(str(e))
 
     def call_macro(self, *args, **kwargs):
+        # called from __call__ methods
         if self.context is None:
             raise InternalException(
                 'Context is still None in call_macro!'
@@ -306,8 +308,10 @@ class MacroGenerator(BaseMacroGenerator):
             e.stack.append(self.macro)
             raise e
 
+    # This adds the macro's unique id to the node's 'depends_on'
     @contextmanager
     def track_call(self):
+        # This is only called from __call__
         if self.stack is None or self.node is None:
             yield
         else:
@@ -322,6 +326,7 @@ class MacroGenerator(BaseMacroGenerator):
             finally:
                 self.stack.pop(unique_id)
 
+    # this makes MacroGenerator objects callable like functions
     def __call__(self, *args, **kwargs):
         with self.track_call():
             return self.call_macro(*args, **kwargs)
@@ -403,6 +408,20 @@ class DocumentationExtension(jinja2.ext.Extension):
         return node
 
 
+class TestExtension(jinja2.ext.Extension):
+    tags = ['test']
+
+    def parse(self, parser):
+        node = jinja2.nodes.Macro(lineno=next(parser.stream).lineno)
+        test_name = parser.parse_assign_target(name_only=True).name
+
+        parser.parse_signature(node)
+        node.name = get_test_macro_name(test_name)
+        node.body = parser.parse_statements(('name:endtest',),
+                                            drop_needle=True)
+        return node
+
+
 def _is_dunder_name(name):
     return name.startswith('__') and name.endswith('__')
 
@@ -474,6 +493,7 @@ def get_environment(
 
     args['extensions'].append(MaterializationExtension)
     args['extensions'].append(DocumentationExtension)
+    args['extensions'].append(TestExtension)
 
     env_cls: Type[jinja2.Environment]
     text_filter: Type
@@ -498,7 +518,7 @@ def catch_jinja(node=None) -> Iterator[None]:
         e.translated = False
         raise CompilationException(str(e), node) from e
     except jinja2.exceptions.UndefinedError as e:
-        raise CompilationException(str(e), node) from e
+        raise UndefinedMacroException(str(e), node) from e
     except CompilationException as exc:
         exc.add_node(node)
         raise
@@ -545,7 +565,7 @@ def _requote_result(raw_value: str, rendered: str) -> str:
 # checking two separate patterns, but the standard deviation is smaller with
 # one pattern. The time difference between the two was ~2 std deviations, which
 # is small enough that I've just chosen the more readable option.
-_HAS_RENDER_CHARS_PAT = re.compile(r'({[{%]|[}%]})')
+_HAS_RENDER_CHARS_PAT = re.compile(r'({[{%#]|[#}%]})')
 
 
 def get_rendered(
@@ -606,12 +626,12 @@ def extract_toplevel_blocks(
     )
 
 
-SCHEMA_TEST_KWARGS_NAME = '_dbt_schema_test_kwargs'
+GENERIC_TEST_KWARGS_NAME = '_dbt_generic_test_kwargs'
 
 
 def add_rendered_test_kwargs(
     context: Dict[str, Any],
-    node: Union[ParsedSchemaTestNode, CompiledSchemaTestNode],
+    node: Union[ParsedGenericTestNode, CompiledGenericTestNode],
     capture_macros: bool = False,
 ) -> None:
     """Render each of the test kwargs in the given context using the native
@@ -640,5 +660,7 @@ def add_rendered_test_kwargs(
 
         return value
 
-    kwargs = deep_map(_convert_function, node.test_metadata.kwargs)
-    context[SCHEMA_TEST_KWARGS_NAME] = kwargs
+    # The test_metadata.kwargs come from the test builder, and were set
+    # when the test node was created in _parse_generic_test.
+    kwargs = deep_map_render(_convert_function, node.test_metadata.kwargs)
+    context[GENERIC_TEST_KWARGS_NAME] = kwargs

core/dbt/clients/jinja_static.py

@@ -0,0 +1,154 @@
+import jinja2
+from dbt.clients.jinja import get_environment
+from dbt.exceptions import raise_compiler_error
+
+
+def statically_extract_macro_calls(string, ctx, db_wrapper=None):
+    # set 'capture_macros' to capture undefined
+    env = get_environment(None, capture_macros=True)
+    parsed = env.parse(string)
+
+    standard_calls = ['source', 'ref', 'config']
+    possible_macro_calls = []
+    for func_call in parsed.find_all(jinja2.nodes.Call):
+        func_name = None
+        if hasattr(func_call, 'node') and hasattr(func_call.node, 'name'):
+            func_name = func_call.node.name
+        else:
+            # func_call for dbt_utils.current_timestamp macro
+            # Call(
+            #   node=Getattr(
+            #     node=Name(
+            #       name='dbt_utils',
+            #       ctx='load'
+            #     ),
+            #     attr='current_timestamp',
+            #     ctx='load
+            #   ),
+            #   args=[],
+            #   kwargs=[],
+            #   dyn_args=None,
+            #   dyn_kwargs=None
+            # )
+            if (hasattr(func_call, 'node') and
+                    hasattr(func_call.node, 'node') and
+                    type(func_call.node.node).__name__ == 'Name' and
+                    hasattr(func_call.node, 'attr')):
+                package_name = func_call.node.node.name
+                macro_name = func_call.node.attr
+                if package_name == 'adapter':
+                    if macro_name == 'dispatch':
+                        ad_macro_calls = statically_parse_adapter_dispatch(
+                            func_call, ctx, db_wrapper)
+                        possible_macro_calls.extend(ad_macro_calls)
+                    else:
+                        # This skips calls such as adapter.parse_index
+                        continue
+                else:
+                    func_name = f'{package_name}.{macro_name}'
+            else:
+                continue
+        if not func_name:
+            continue
+        if func_name in standard_calls:
+            continue
+        elif ctx.get(func_name):
+            continue
+        else:
+            if func_name not in possible_macro_calls:
+                possible_macro_calls.append(func_name)
+
+    return possible_macro_calls
+
+
+# Call(
+#   node=Getattr(
+#     node=Name(
+#       name='adapter',
+#       ctx='load'
+#     ),
+#     attr='dispatch',
+#     ctx='load'
+#   ),
+#   args=[
+#     Const(value='test_pkg_and_dispatch')
+#   ],
+#   kwargs=[
+#     Keyword(
+#       key='packages',
+#       value=Call(node=Getattr(node=Name(name='local_utils', ctx='load'),
+#          attr='_get_utils_namespaces', ctx='load'), args=[], kwargs=[],
+#          dyn_args=None, dyn_kwargs=None)
+#     )
+#   ],
+#   dyn_args=None,
+#   dyn_kwargs=None
+# )
+def statically_parse_adapter_dispatch(func_call, ctx, db_wrapper):
+    possible_macro_calls = []
+    # This captures an adapter.dispatch('<macro_name>') call.
+
+    func_name = None
+    # macro_name positional argument
+    if len(func_call.args) > 0:
+        func_name = func_call.args[0].value
+    if func_name:
+        possible_macro_calls.append(func_name)
+
+    # packages positional argument
+    macro_namespace = None
+    packages_arg = None
+    packages_arg_type = None
+
+    if len(func_call.args) > 1:
+        packages_arg = func_call.args[1]
+        # This can be a List or a Call
+        packages_arg_type = type(func_call.args[1]).__name__
+
+    # keyword arguments
+    if func_call.kwargs:
+        for kwarg in func_call.kwargs:
+            if kwarg.key == 'macro_name':
+                # This will remain to enable static resolution
+                if type(kwarg.value).__name__ == 'Const':
+                    func_name = kwarg.value.value
+                    possible_macro_calls.append(func_name)
+                else:
+                    raise_compiler_error(f"The macro_name parameter ({kwarg.value.value}) "
+                                         "to adapter.dispatch was not a string")
+            elif kwarg.key == 'macro_namespace':
+                # This will remain to enable static resolution
+                kwarg_type = type(kwarg.value).__name__
+                if kwarg_type == 'Const':
+                    macro_namespace = kwarg.value.value
+                else:
+                    raise_compiler_error("The macro_namespace parameter to adapter.dispatch "
+                                         f"is a {kwarg_type}, not a string")
+
+    # positional arguments
+    if packages_arg:
+        if packages_arg_type == 'List':
+            # This will remain to enable static resolution
+            packages = []
+            for item in packages_arg.items:
+                packages.append(item.value)
+        elif packages_arg_type == 'Const':
+            # This will remain to enable static resolution
+            macro_namespace = packages_arg.value
+
+    if db_wrapper:
+        macro = db_wrapper.dispatch(
+            func_name,
+            macro_namespace=macro_namespace
+        ).macro
+        func_name = f'{macro.package_name}.{macro.name}'
+        possible_macro_calls.append(func_name)
+    else:  # this is only for test/unit/test_macro_calls.py
+        if macro_namespace:
+            packages = [macro_namespace]
+        else:
+            packages = []
+        for package_name in packages:
+            possible_macro_calls.append(f'{package_name}.{func_name}')
+
+    return possible_macro_calls

core/dbt/clients/registry.py

@@ -1,10 +1,13 @@
-from functools import wraps
+import functools
 import requests
-from dbt.exceptions import RegistryException
-from dbt.utils import memoized
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.events.functions import fire_event
+from dbt.events.types import (
+    RegistryProgressMakingGETRequest,
+    RegistryProgressGETResponse
+)
+from dbt.utils import memoized, _connection_exception_retry as connection_exception_retry
+from dbt import deprecations
 import os
-import time
 
 if os.getenv('DBT_PACKAGE_HUB_URL'):
     DEFAULT_REGISTRY_BASE_URL = os.getenv('DBT_PACKAGE_HUB_URL')
@@ -19,54 +22,68 @@ def _get_url(url, registry_base_url=None):
     return '{}{}'.format(registry_base_url, url)
 
 
-def _wrap_exceptions(fn):
-    @wraps(fn)
-    def wrapper(*args, **kwargs):
-        max_attempts = 5
-        attempt = 0
-        while True:
-            attempt += 1
-            try:
-                return fn(*args, **kwargs)
-            except requests.exceptions.ConnectionError as exc:
-                if attempt < max_attempts:
-                    time.sleep(1)
-                    continue
-
-                raise RegistryException(
-                    'Unable to connect to registry hub'
-                ) from exc
-    return wrapper
+def _get_with_retries(path, registry_base_url=None):
+    get_fn = functools.partial(_get, path, registry_base_url)
+    return connection_exception_retry(get_fn, 5)
 
 
-@_wrap_exceptions
 def _get(path, registry_base_url=None):
     url = _get_url(path, registry_base_url)
-    logger.debug('Making package registry request: GET {}'.format(url))
-    resp = requests.get(url)
-    logger.debug('Response from registry: GET {} {}'.format(url,
-                                                            resp.status_code))
+    fire_event(RegistryProgressMakingGETRequest(url=url))
+    resp = requests.get(url, timeout=30)
+    fire_event(RegistryProgressGETResponse(url=url, resp_code=resp.status_code))
     resp.raise_for_status()
+
+    # It is unexpected for the content of the response to be None so if it is, raising this error
+    # will cause this function to retry (if called within _get_with_retries) and hopefully get
+    # a response.  This seems to happen when there's an issue with the Hub.
+    # See https://github.com/dbt-labs/dbt-core/issues/4577
+    if resp.json() is None:
+        raise requests.exceptions.ContentDecodingError(
+            'Request error: The response is None', response=resp
+        )
     return resp.json()
 
 
 def index(registry_base_url=None):
-    return _get('api/v1/index.json', registry_base_url)
+    return _get_with_retries('api/v1/index.json', registry_base_url)
 
 
 index_cached = memoized(index)
 
 
 def packages(registry_base_url=None):
-    return _get('api/v1/packages.json', registry_base_url)
+    return _get_with_retries('api/v1/packages.json', registry_base_url)
 
 
 def package(name, registry_base_url=None):
-    return _get('api/v1/{}.json'.format(name), registry_base_url)
+    response = _get_with_retries('api/v1/{}.json'.format(name), registry_base_url)
+
+    # Either redirectnamespace or redirectname in the JSON response indicate a redirect
+    # redirectnamespace redirects based on package ownership
+    # redirectname redirects based on package name
+    # Both can be present at the same time, or neither. Fails gracefully to old name
+
+    if ('redirectnamespace' in response) or ('redirectname' in response):
+
+        if ('redirectnamespace' in response) and response['redirectnamespace'] is not None:
+            use_namespace = response['redirectnamespace']
+        else:
+            use_namespace = response['namespace']
+
+        if ('redirectname' in response) and response['redirectname'] is not None:
+            use_name = response['redirectname']
+        else:
+            use_name = response['name']
+
+        new_nwo = use_namespace + "/" + use_name
+        deprecations.warn('package-redirect', old_name=name, new_name=new_nwo)
+
+    return response
 
 
 def package_version(name, version, registry_base_url=None):
-    return _get('api/v1/{}/{}.json'.format(name, version), registry_base_url)
+    return _get_with_retries('api/v1/{}/{}.json'.format(name, version), registry_base_url)
 
 
 def get_available_versions(name):

core/dbt/clients/system.py

@@ -1,4 +1,5 @@
 import errno
+import functools
 import fnmatch
 import json
 import os
@@ -14,10 +15,13 @@ from typing import (
     Type, NoReturn, List, Optional, Dict, Any, Tuple, Callable, Union
 )
 
+from dbt.events.functions import fire_event
+from dbt.events.types import (
+    SystemErrorRetrievingModTime, SystemCouldNotWrite, SystemExecutingCmd, SystemStdOutMsg,
+    SystemStdErrMsg, SystemReportReturnCode
+)
 import dbt.exceptions
-import dbt.utils
-
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.utils import _connection_exception_retry as connection_exception_retry
 
 if sys.platform == 'win32':
     from ctypes import WinDLL, c_bool
@@ -30,7 +34,7 @@ def find_matching(
     root_path: str,
     relative_paths_to_search: List[str],
     file_pattern: str,
-) -> List[Dict[str, str]]:
+) -> List[Dict[str, Any]]:
     """
     Given an absolute `root_path`, a list of relative paths to that
     absolute root path (`relative_paths_to_search`), and a `file_pattern`
@@ -61,11 +65,17 @@ def find_matching(
                 relative_path = os.path.relpath(
                     absolute_path, absolute_path_to_search
                 )
+                modification_time = 0.0
+                try:
+                    modification_time = os.path.getmtime(absolute_path)
+                except OSError:
+                    fire_event(SystemErrorRetrievingModTime(path=absolute_path))
                 if reobj.match(local_file):
                     matching.append({
                         'searched_path': relative_path_to_search,
                         'absolute_path': absolute_path,
                         'relative_path': relative_path,
+                        'modification_time': modification_time,
                     })
 
     return matching
@@ -153,15 +163,16 @@ def write_file(path: str, contents: str = '') -> bool:
                 reason = 'Path was possibly too long'
             # all our hard work and the path was still too long. Log and
             # continue.
-            logger.debug(
-                f'Could not write to path {path}({len(path)} characters): '
-                f'{reason}\nexception: {exc}'
-            )
+            fire_event(SystemCouldNotWrite(path=path, reason=reason, exc=exc))
         else:
             raise
     return True
 
 
+def read_json(path: str) -> Dict[str, Any]:
+    return json.loads(load_file_contents(path))
+
+
 def write_json(path: str, data: Dict[str, Any]) -> bool:
     return write_file(path, json.dumps(data, cls=dbt.utils.JSONEncoder))
 
@@ -400,7 +411,7 @@ def _interpret_oserror(exc: OSError, cwd: str, cmd: List[str]) -> NoReturn:
 def run_cmd(
     cwd: str, cmd: List[str], env: Optional[Dict[str, Any]] = None
 ) -> Tuple[bytes, bytes]:
-    logger.debug('Executing "{}"'.format(' '.join(cmd)))
+    fire_event(SystemExecutingCmd(cmd=cmd))
     if len(cmd) == 0:
         raise dbt.exceptions.CommandError(cwd, cmd)
 
@@ -412,6 +423,9 @@ def run_cmd(
         full_env.update(env)
 
     try:
+        exe_pth = shutil.which(cmd[0])
+        if exe_pth:
+            cmd = [os.path.abspath(exe_pth)] + list(cmd[1:])
         proc = subprocess.Popen(
             cmd,
             cwd=cwd,
@@ -423,18 +437,27 @@ def run_cmd(
     except OSError as exc:
         _interpret_oserror(exc, cwd, cmd)
 
-    logger.debug('STDOUT: "{!s}"'.format(out))
-    logger.debug('STDERR: "{!s}"'.format(err))
+    fire_event(SystemStdOutMsg(bmsg=out))
+    fire_event(SystemStdErrMsg(bmsg=err))
 
     if proc.returncode != 0:
-        logger.debug('command return code={}'.format(proc.returncode))
+        fire_event(SystemReportReturnCode(returncode=proc.returncode))
         raise dbt.exceptions.CommandResultError(cwd, cmd, proc.returncode,
                                                 out, err)
 
     return out, err
 
 
-def download(url: str, path: str, timeout: Union[float, tuple] = None) -> None:
+def download_with_retries(
+    url: str, path: str, timeout: Optional[Union[float, tuple]] = None
+) -> None:
+    download_fn = functools.partial(download, url, path, timeout)
+    connection_exception_retry(download_fn, 5)
+
+
+def download(
+    url: str, path: str, timeout: Optional[Union[float, tuple]] = None
+) -> None:
     path = convert_path(path)
     connection_timeout = timeout or float(os.getenv('DBT_HTTP_TIMEOUT', 10))
     response = requests.get(url, timeout=connection_timeout)
@@ -462,7 +485,7 @@ def untar_package(
 ) -> None:
     tar_path = convert_path(tar_path)
     tar_dir_name = None
-    with tarfile.open(tar_path, 'r') as tarball:
+    with tarfile.open(tar_path, 'r:gz') as tarball:
         tarball.extractall(dest_dir)
         tar_dir_name = os.path.commonprefix(tarball.getnames())
     if rename_to:

core/dbt/clients/yaml_helper.py

@@ -1,16 +1,18 @@
-from typing import Any
-
 import dbt.exceptions
-
+from typing import Any, Dict, Optional
 import yaml
-import yaml.scanner
 
 # the C version is faster, but it doesn't always exist
-YamlLoader: Any
 try:
-    from yaml import CSafeLoader as YamlLoader
+    from yaml import (
+        CLoader as Loader,
+        CSafeLoader as SafeLoader,
+        CDumper as Dumper
+    )
 except ImportError:
-    from yaml import SafeLoader as YamlLoader
+    from yaml import (  # type: ignore  # noqa: F401
+        Loader, SafeLoader, Dumper
+    )
 
 
 YAML_ERROR_MESSAGE = """
@@ -53,8 +55,8 @@ def contextualized_yaml_error(raw_contents, error):
                                      raw_error=error)
 
 
-def safe_load(contents):
-    return yaml.load(contents, Loader=YamlLoader)
+def safe_load(contents) -> Optional[Dict[str, Any]]:
+    return yaml.load(contents, Loader=SafeLoader)
 
 
 def load_yaml_text(contents):

core/dbt/compilation.py

@@ -1,38 +1,45 @@
 import os
 from collections import defaultdict
-from typing import List, Dict, Any
+from typing import List, Dict, Any, Tuple, cast, Optional
 
-import dbt.utils
-import dbt.include
-import dbt.tracking
+import networkx as nx  # type: ignore
+import pickle
+import sqlparse
 
-from dbt.node_types import NodeType
-from dbt.linker import Linker
-
-from dbt.context.providers import generate_runtime_model
-from dbt.contracts.graph.compiled import NonSourceNode
-from dbt.contracts.graph.manifest import Manifest
-import dbt.exceptions
-import dbt.flags
-import dbt.config
+from dbt import flags
+from dbt.adapters.factory import get_adapter
+from dbt.clients import jinja
+from dbt.clients.system import make_directory
+from dbt.context.providers import generate_runtime_model_context
+from dbt.contracts.graph.manifest import Manifest, UniqueID
 from dbt.contracts.graph.compiled import (
-    InjectedCTE,
     COMPILED_TYPES,
+    CompiledGenericTestNode,
+    GraphMemberNode,
+    InjectedCTE,
+    ManifestNode,
     NonSourceCompiledNode,
-    CompiledSchemaTestNode,
 )
 from dbt.contracts.graph.parsed import ParsedNode
-
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.exceptions import (
+    dependency_not_found,
+    InternalException,
+    RuntimeException,
+)
+from dbt.graph import Graph
+from dbt.events.functions import fire_event
+from dbt.events.types import FoundStats, CompilingNode, WritingInjectedSQLForNode
+from dbt.node_types import NodeType
+from dbt.events.format import pluralize
+import dbt.tracking
 
 graph_file_name = 'graph.gpickle'
 
 
 def _compiled_type_for(model: ParsedNode):
     if type(model) not in COMPILED_TYPES:
-        raise dbt.exceptions.InternalException(
-            'Asked to compile {} node, but it has no compiled form'
-            .format(type(model))
+        raise InternalException(
+            f'Asked to compile {type(model)} node, but it has no compiled form'
         )
     return COMPILED_TYPES[type(model)]
 
@@ -47,20 +54,27 @@ def print_compile_stats(stats):
         NodeType.Operation: 'operation',
         NodeType.Seed: 'seed file',
         NodeType.Source: 'source',
+        NodeType.Exposure: 'exposure',
+        NodeType.Metric: 'metric'
     }
 
     results = {k: 0 for k in names.keys()}
     results.update(stats)
 
+    # create tracking event for resource_counts
+    if dbt.tracking.active_user is not None:
+        resource_counts = {k.pluralize(): v for k, v in results.items()}
+        dbt.tracking.track_resource_counts(resource_counts)
+
     stat_line = ", ".join([
-        dbt.utils.pluralize(ct, names.get(t)) for t, ct in results.items()
+        pluralize(ct, names.get(t)) for t, ct in results.items()
         if t in names
     ])
 
-    logger.info("Found {}".format(stat_line))
+    fire_event(FoundStats(stat_line=stat_line))
 
 
-def _node_enabled(node: NonSourceNode):
+def _node_enabled(node: ManifestNode):
     # Disabled models are already excluded from the manifest
     if node.resource_type == NodeType.Test and not node.config.enabled:
         return False
@@ -76,6 +90,10 @@ def _generate_stats(manifest: Manifest):
 
     for source in manifest.sources.values():
         stats[source.resource_type] += 1
+    for exposure in manifest.exposures.values():
+        stats[exposure.resource_type] += 1
+    for metric in manifest.metrics.values():
+        stats[metric.resource_type] += 1
     for macro in manifest.macros.values():
         stats[macro.resource_type] += 1
     return stats
@@ -94,39 +112,59 @@ def _extend_prepended_ctes(prepended_ctes, new_prepended_ctes):
         _add_prepended_cte(prepended_ctes, new_cte)
 
 
-def prepend_ctes(model, manifest):
-    model, _, manifest = recursively_prepend_ctes(model, manifest)
+def _get_tests_for_node(manifest: Manifest, unique_id: UniqueID) -> List[UniqueID]:
+    """ Get a list of tests that depend on the node with the
+    provided unique id """
 
-    return (model, manifest)
+    tests = []
+    if unique_id in manifest.child_map:
+        for child_unique_id in manifest.child_map[unique_id]:
+            if child_unique_id.startswith('test.'):
+                tests.append(child_unique_id)
+
+    return tests
 
 
-def recursively_prepend_ctes(model, manifest):
-    if model.extra_ctes_injected:
-        return (model, model.extra_ctes, manifest)
+class Linker:
+    def __init__(self, data=None):
+        if data is None:
+            data = {}
+        self.graph = nx.DiGraph(**data)
 
-    if dbt.flags.STRICT_MODE:
-        if not isinstance(model, tuple(COMPILED_TYPES.values())):
-            raise dbt.exceptions.InternalException(
-                'Bad model type: {}'.format(type(model))
-            )
+    def edges(self):
+        return self.graph.edges()
 
-    prepended_ctes: List[InjectedCTE] = []
+    def nodes(self):
+        return self.graph.nodes()
 
-    for cte in model.extra_ctes:
-        cte_id = cte.id
-        cte_to_add = manifest.nodes.get(cte_id)
-        cte_to_add, new_prepended_ctes, manifest = recursively_prepend_ctes(
-            cte_to_add, manifest)
-        _extend_prepended_ctes(prepended_ctes, new_prepended_ctes)
-        new_cte_name = '__dbt__CTE__{}'.format(cte_to_add.name)
-        sql = ' {} as (\n{}\n)'.format(new_cte_name, cte_to_add.compiled_sql)
-        _add_prepended_cte(prepended_ctes, InjectedCTE(id=cte_id, sql=sql))
+    def find_cycles(self):
+        try:
+            cycle = nx.find_cycle(self.graph)
+        except nx.NetworkXNoCycle:
+            return None
+        else:
+            # cycles is a List[Tuple[str, ...]]
+            return " --> ".join(c[0] for c in cycle)
 
-    model.prepend_ctes(prepended_ctes)
+    def dependency(self, node1, node2):
+        "indicate that node1 depends on node2"
+        self.graph.add_node(node1)
+        self.graph.add_node(node2)
+        self.graph.add_edge(node2, node1)
 
-    manifest.update_node(model)
+    def add_node(self, node):
+        self.graph.add_node(node)
 
-    return (model, prepended_ctes, manifest)
+    def write_graph(self, outfile: str, manifest: Manifest):
+        """Write the graph to a gpickle file. Before doing so, serialize and
+        include all nodes in their corresponding graph entries.
+        """
+        out_graph = self.graph.copy()
+        for node_id in self.graph:
+            data = manifest.expect(node_id).to_dict(omit_none=True)
+            out_graph.add_node(node_id, **data)
+        with open(outfile, 'wb') as outfh:
+            pickle.dump(out_graph, outfh, protocol=pickle.HIGHEST_PROTOCOL)
 
 
 class Compiler:
@@ -134,38 +172,214 @@ class Compiler:
         self.config = config
 
     def initialize(self):
-        dbt.clients.system.make_directory(self.config.target_path)
-        dbt.clients.system.make_directory(self.config.modules_path)
+        make_directory(self.config.target_path)
+        make_directory(self.config.packages_install_path)
 
+    # creates a ModelContext which is converted to
+    # a dict for jinja rendering of SQL
     def _create_node_context(
         self,
         node: NonSourceCompiledNode,
         manifest: Manifest,
         extra_context: Dict[str, Any],
     ) -> Dict[str, Any]:
-        context = generate_runtime_model(
+
+        context = generate_runtime_model_context(
             node, self.config, manifest
         )
         context.update(extra_context)
-        if isinstance(node, CompiledSchemaTestNode):
+        if isinstance(node, CompiledGenericTestNode):
             # for test nodes, add a special keyword args value to the context
-            dbt.clients.jinja.add_rendered_test_kwargs(context, node)
+            jinja.add_rendered_test_kwargs(context, node)
 
         return context
 
-    def compile_node(self, node, manifest, extra_context=None):
+    def add_ephemeral_prefix(self, name: str):
+        adapter = get_adapter(self.config)
+        relation_cls = adapter.Relation
+        return relation_cls.add_ephemeral_prefix(name)
+
+    def _get_relation_name(self, node: ParsedNode):
+        relation_name = None
+        if node.is_relational and not node.is_ephemeral_model:
+            adapter = get_adapter(self.config)
+            relation_cls = adapter.Relation
+            relation_name = str(relation_cls.create_from(self.config, node))
+        return relation_name
+
+    def _inject_ctes_into_sql(self, sql: str, ctes: List[InjectedCTE]) -> str:
+        """
+        `ctes` is a list of InjectedCTEs like:
+
+            [
+                InjectedCTE(
+                    id="cte_id_1",
+                    sql="__dbt__cte__ephemeral as (select * from table)",
+                ),
+                InjectedCTE(
+                    id="cte_id_2",
+                    sql="__dbt__cte__events as (select id, type from events)",
+                ),
+            ]
+
+        Given `sql` like:
+
+          "with internal_cte as (select * from sessions)
+           select * from internal_cte"
+
+        This will spit out:
+
+          "with __dbt__cte__ephemeral as (select * from table),
+                __dbt__cte__events as (select id, type from events),
+                with internal_cte as (select * from sessions)
+           select * from internal_cte"
+
+        (Whitespace enhanced for readability.)
+        """
+        if len(ctes) == 0:
+            return sql
+
+        parsed_stmts = sqlparse.parse(sql)
+        parsed = parsed_stmts[0]
+
+        with_stmt = None
+        for token in parsed.tokens:
+            if token.is_keyword and token.normalized == 'WITH':
+                with_stmt = token
+                break
+
+        if with_stmt is None:
+            # no with stmt, add one, and inject CTEs right at the beginning
+            first_token = parsed.token_first()
+            with_stmt = sqlparse.sql.Token(sqlparse.tokens.Keyword, 'with')
+            parsed.insert_before(first_token, with_stmt)
+        else:
+            # stmt exists, add a comma (which will come after injected CTEs)
+            trailing_comma = sqlparse.sql.Token(
+                sqlparse.tokens.Punctuation, ','
+            )
+            parsed.insert_after(with_stmt, trailing_comma)
+
+        token = sqlparse.sql.Token(
+            sqlparse.tokens.Keyword,
+            ", ".join(c.sql for c in ctes)
+        )
+        parsed.insert_after(with_stmt, token)
+
+        return str(parsed)
+
+    def _recursively_prepend_ctes(
+        self,
+        model: NonSourceCompiledNode,
+        manifest: Manifest,
+        extra_context: Optional[Dict[str, Any]],
+    ) -> Tuple[NonSourceCompiledNode, List[InjectedCTE]]:
+        """This method is called by the 'compile_node' method. Starting
+        from the node that it is passed in, it will recursively call
+        itself using the 'extra_ctes'.  The 'ephemeral' models do
+        not produce SQL that is executed directly, instead they
+        are rolled up into the models that refer to them by
+        inserting CTEs into the SQL.
+        """
+        if model.compiled_sql is None:
+            raise RuntimeException(
+                'Cannot inject ctes into an unparsed node', model
+            )
+        if model.extra_ctes_injected:
+            return (model, model.extra_ctes)
+
+        # Just to make it plain that nothing is actually injected for this case
+        if not model.extra_ctes:
+            model.extra_ctes_injected = True
+            manifest.update_node(model)
+            return (model, model.extra_ctes)
+
+        # This stores the ctes which will all be recursively
+        # gathered and then "injected" into the model.
+        prepended_ctes: List[InjectedCTE] = []
+
+        # extra_ctes are added to the model by
+        # RuntimeRefResolver.create_relation, which adds an
+        # extra_cte for every model relation which is an
+        # ephemeral model.
+        for cte in model.extra_ctes:
+            if cte.id not in manifest.nodes:
+                raise InternalException(
+                    f'During compilation, found a cte reference that '
+                    f'could not be resolved: {cte.id}'
+                )
+            cte_model = manifest.nodes[cte.id]
+
+            if not cte_model.is_ephemeral_model:
+                raise InternalException(f'{cte.id} is not ephemeral')
+
+            # This model has already been compiled, so it's been
+            # through here before
+            if getattr(cte_model, 'compiled', False):
+                assert isinstance(cte_model, tuple(COMPILED_TYPES.values()))
+                cte_model = cast(NonSourceCompiledNode, cte_model)
+                new_prepended_ctes = cte_model.extra_ctes
+
+            # if the cte_model isn't compiled, i.e. first time here
+            else:
+                # This is an ephemeral parsed model that we can compile.
+                # Compile and update the node
+                cte_model = self._compile_node(
+                    cte_model, manifest, extra_context)
+                # recursively call this method
+                cte_model, new_prepended_ctes = \
+                    self._recursively_prepend_ctes(
+                        cte_model, manifest, extra_context
+                    )
+                # Save compiled SQL file and sync manifest
+                self._write_node(cte_model)
+                manifest.sync_update_node(cte_model)
+
+            _extend_prepended_ctes(prepended_ctes, new_prepended_ctes)
+
+            new_cte_name = self.add_ephemeral_prefix(cte_model.name)
+            rendered_sql = (
+                cte_model._pre_injected_sql or cte_model.compiled_sql
+            )
+            sql = f' {new_cte_name} as (\n{rendered_sql}\n)'
+
+            _add_prepended_cte(prepended_ctes, InjectedCTE(id=cte.id, sql=sql))
+
+        injected_sql = self._inject_ctes_into_sql(
+            model.compiled_sql,
+            prepended_ctes,
+        )
+        model._pre_injected_sql = model.compiled_sql
+        model.compiled_sql = injected_sql
+        model.extra_ctes_injected = True
+        model.extra_ctes = prepended_ctes
+        model.validate(model.to_dict(omit_none=True))
+
+        manifest.update_node(model)
+
+        return model, prepended_ctes
+
+    # creates a compiled_node from the ManifestNode passed in,
+    # creates a "context" dictionary for jinja rendering,
+    # and then renders the "compiled_sql" using the node, the
+    # raw_sql and the context.
+    def _compile_node(
+        self,
+        node: ManifestNode,
+        manifest: Manifest,
+        extra_context: Optional[Dict[str, Any]] = None,
+    ) -> NonSourceCompiledNode:
         if extra_context is None:
             extra_context = {}
 
-        logger.debug("Compiling {}".format(node.unique_id))
+        fire_event(CompilingNode(unique_id=node.unique_id))
 
-        data = node.to_dict()
+        data = node.to_dict(omit_none=True)
         data.update({
             'compiled': False,
             'compiled_sql': None,
             'extra_ctes_injected': False,
             'extra_ctes': [],
-            'injected_sql': None,
         })
         compiled_node = _compiled_type_for(node).from_dict(data)
 
@@ -173,25 +387,26 @@ class Compiler:
             compiled_node, manifest, extra_context
         )
 
-        compiled_node.compiled_sql = dbt.clients.jinja.get_rendered(
+        compiled_node.compiled_sql = jinja.get_rendered(
             node.raw_sql,
             context,
-            node)
+            node,
+        )
+
+        compiled_node.relation_name = self._get_relation_name(node)
 
         compiled_node.compiled = True
 
-        injected_node, _ = prepend_ctes(compiled_node, manifest)
-
-        return injected_node
+        return compiled_node
 
     def write_graph_file(self, linker: Linker, manifest: Manifest):
         filename = graph_file_name
         graph_path = os.path.join(self.config.target_path, filename)
-        if dbt.flags.WRITE_JSON:
+        if flags.WRITE_JSON:
             linker.write_graph(graph_path, manifest)
 
     def link_node(
-        self, linker: Linker, node: NonSourceNode, manifest: Manifest
+        self, linker: Linker, node: GraphMemberNode, manifest: Manifest
     ):
         linker.add_node(node.unique_id)
 
@@ -207,23 +422,96 @@ class Compiler:
                     (manifest.sources[dependency].unique_id)
                 )
             else:
-                dbt.exceptions.dependency_not_found(node, dependency)
+                dependency_not_found(node, dependency)
 
-    def link_graph(self, linker: Linker, manifest: Manifest):
+    def link_graph(self, linker: Linker, manifest: Manifest, add_test_edges: bool = False):
         for source in manifest.sources.values():
             linker.add_node(source.unique_id)
         for node in manifest.nodes.values():
             self.link_node(linker, node, manifest)
+        for exposure in manifest.exposures.values():
+            self.link_node(linker, exposure, manifest)
+        for metric in manifest.metrics.values():
+            self.link_node(linker, metric, manifest)
 
         cycle = linker.find_cycles()
 
         if cycle:
             raise RuntimeError("Found a cycle: {}".format(cycle))
 
-    def compile(self, manifest: Manifest, write=True):
+        if add_test_edges:
+            manifest.build_parent_and_child_maps()
+            self.add_test_edges(linker, manifest)
+
+    def add_test_edges(self, linker: Linker, manifest: Manifest) -> None:
+        """ This method adds additional edges to the DAG. For a given non-test
+        executable node, add an edge from an upstream test to the given node if
+        the set of nodes the test depends on is a subset of the upstream nodes
+        for the given node. """
+
+        # Given a graph:
+        # model1 --> model2 --> model3
+        #   |             |
+        #   |            \/
+        #  \/          test 2
+        # test1
+        #
+        # Produce the following graph:
+        # model1 --> model2 --> model3
+        #   |       /\    |      /\ /\
+        #   |       |    \/      |  |
+        #  \/       |  test2 ----|  |
+        # test1 ----|---------------|
+
+        for node_id in linker.graph:
+            # If node is executable (in manifest.nodes) and does _not_
+            # represent a test, continue.
+            if (
+                node_id in manifest.nodes and
+                manifest.nodes[node_id].resource_type != NodeType.Test
+            ):
+                # Get *everything* upstream of the node
+                all_upstream_nodes = nx.traversal.bfs_tree(
+                    linker.graph, node_id, reverse=True
+                )
+                # Get the set of upstream nodes not including the current node.
+                upstream_nodes = set([
+                    n for n in all_upstream_nodes if n != node_id
+                ])
+
+                # Get all tests that depend on any upstream nodes.
+                upstream_tests = []
+                for upstream_node in upstream_nodes:
+                    upstream_tests += _get_tests_for_node(
+                        manifest,
+                        upstream_node
+                    )
+
+                for upstream_test in upstream_tests:
+                    # Get the set of all nodes that the test depends on
+                    # including the upstream_node itself. This is necessary
+                    # because tests can depend on multiple nodes (ex:
+                    # relationship tests). Test nodes do not distinguish
+                    # between what node the test is "testing" and what
+                    # node(s) it depends on.
+                    test_depends_on = set(
+                        manifest.nodes[upstream_test].depends_on_nodes
+                    )
+
+                    # If the set of nodes that an upstream test depends on
+                    # is a subset of all upstream nodes of the current node,
+                    # add an edge from the upstream test to the current node.
+                    if (test_depends_on.issubset(upstream_nodes)):
+                        linker.graph.add_edge(
+                            upstream_test,
+                            node_id
+                        )
+
+    def compile(self, manifest: Manifest, write=True, add_test_edges=False) -> Graph:
+        self.initialize()
         linker = Linker()
 
-        self.link_graph(linker, manifest)
+        self.link_graph(linker, manifest, add_test_edges)
 
         stats = _generate_stats(manifest)
 
@@ -231,37 +519,41 @@ class Compiler:
             self.write_graph_file(linker, manifest)
         print_compile_stats(stats)
 
-        return linker
+        return Graph(linker.graph)
 
+    # writes the "compiled_sql" into the target/compiled directory
+    def _write_node(self, node: NonSourceCompiledNode) -> ManifestNode:
+        if (not node.extra_ctes_injected or
+                node.resource_type == NodeType.Snapshot):
+            return node
+        fire_event(WritingInjectedSQLForNode(unique_id=node.unique_id))
 
-def compile_manifest(config, manifest, write=True) -> Linker:
-    compiler = Compiler(config)
-    compiler.initialize()
-    return compiler.compile(manifest, write=write)
+        if node.compiled_sql:
+            node.compiled_path = node.write_node(
+                self.config.target_path,
+                'compiled',
+                node.compiled_sql
+            )
+        return node
 
+    def compile_node(
+        self,
+        node: ManifestNode,
+        manifest: Manifest,
+        extra_context: Optional[Dict[str, Any]] = None,
+        write: bool = True,
+    ) -> NonSourceCompiledNode:
+        """This is the main entry point into this code. It's called by
+        CompileRunner.compile, GenericRPCRunner.compile, and
+        RunTask.get_hook_sql. It calls '_compile_node' to convert
+        the node into a compiled node, and then calls the
+        recursive method to "prepend" the ctes.
+        """
+        node = self._compile_node(node, manifest, extra_context)
 
-def _is_writable(node):
-    if not node.injected_sql:
-        return False
-
-    if node.resource_type == NodeType.Snapshot:
-        return False
-
-    return True
-
-
-def compile_node(adapter, config, node, manifest, extra_context, write=True):
-    compiler = Compiler(config)
-    node = compiler.compile_node(node, manifest, extra_context)
-
-    if write and _is_writable(node):
-        logger.debug('Writing injected SQL for node "{}"'.format(
-            node.unique_id))
-
-        node.build_path = node.write_node(
-            config.target_path,
-            'compiled',
-            node.injected_sql
+        node, _ = self._recursively_prepend_ctes(
+            node, manifest, extra_context
         )
-
-    return node
+        if write:
+            self._write_node(node)
+        return node

core/dbt/config/README.md

@@ -0,0 +1 @@
+# Config README

core/dbt/config/__init__.py

@@ -1,4 +1,4 @@
 # all these are just exports, they need "noqa" so flake8 will not complain.
-from .profile import Profile, PROFILES_DIR, read_user_config  # noqa
-from .project import Project  # noqa
+from .profile import Profile, read_user_config  # noqa
+from .project import Project, IsFQNResource  # noqa
 from .runtime import RuntimeConfig, UnsetProfileConfig  # noqa

core/dbt/config/profile.py

@@ -2,8 +2,9 @@ from dataclasses import dataclass
 from typing import Any, Dict, Optional, Tuple
 import os
 
-from hologram import ValidationError
+from dbt.dataclass_schema import ValidationError
 
+from dbt import flags
 from dbt.clients.system import load_file_contents
 from dbt.clients.yaml_helper import load_yaml_text
 from dbt.contracts.connection import Credentials, HasCredentials
@@ -14,16 +15,15 @@ from dbt.exceptions import DbtProjectError
 from dbt.exceptions import ValidationException
 from dbt.exceptions import RuntimeException
 from dbt.exceptions import validator_error_message
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.events.types import MissingProfileTarget
+from dbt.events.functions import fire_event
 from dbt.utils import coerce_dict_str
 
 from .renderer import ProfileRenderer
 
 DEFAULT_THREADS = 1
+
 DEFAULT_PROFILES_DIR = os.path.join(os.path.expanduser('~'), '.dbt')
-PROFILES_DIR = os.path.expanduser(
-    os.getenv('DBT_PROFILES_DIR', DEFAULT_PROFILES_DIR)
-)
 
 INVALID_PROFILE_MESSAGE = """
 dbt encountered an error while trying to read your profiles.yml file.
@@ -43,7 +43,7 @@ Here, [profile name] should be replaced with a profile name
 defined in your profiles.yml file. You can find profiles.yml here:
 
 {profiles_file}/profiles.yml
-""".format(profiles_file=PROFILES_DIR)
+""".format(profiles_file=DEFAULT_PROFILES_DIR)
 
 
 def read_profile(profiles_dir: str) -> Dict[str, Any]:
@@ -73,21 +73,44 @@ def read_user_config(directory: str) -> UserConfig:
     try:
         profile = read_profile(directory)
         if profile:
-            user_cfg = coerce_dict_str(profile.get('config', {}))
-            if user_cfg is not None:
-                return UserConfig.from_dict(user_cfg)
+            user_config = coerce_dict_str(profile.get('config', {}))
+            if user_config is not None:
+                UserConfig.validate(user_config)
+                return UserConfig.from_dict(user_config)
     except (RuntimeException, ValidationError):
         pass
     return UserConfig()
 
 
-@dataclass
+# The Profile class is included in RuntimeConfig, so any attribute
+# additions must also be set where the RuntimeConfig class is created
+# `init=False` is a workaround for https://bugs.python.org/issue45081
+@dataclass(init=False)
 class Profile(HasCredentials):
     profile_name: str
     target_name: str
-    config: UserConfig
+    user_config: UserConfig
     threads: int
     credentials: Credentials
+    profile_env_vars: Dict[str, Any]
+
+    def __init__(
+        self,
+        profile_name: str,
+        target_name: str,
+        user_config: UserConfig,
+        threads: int,
+        credentials: Credentials
+    ):
+        """Explicitly defining `__init__` to work around bug in Python 3.9.7
+        https://bugs.python.org/issue45081
+        """
+        self.profile_name = profile_name
+        self.target_name = target_name
+        self.user_config = user_config
+        self.threads = threads
+        self.credentials = credentials
+        self.profile_env_vars = {}  # never available on init
 
     def to_profile_info(
         self, serialize_credentials: bool = False
@@ -103,13 +126,13 @@ class Profile(HasCredentials):
         result = {
             'profile_name': self.profile_name,
             'target_name': self.target_name,
-            'config': self.config,
+            'user_config': self.user_config,
             'threads': self.threads,
             'credentials': self.credentials,
         }
         if serialize_credentials:
-            result['config'] = self.config.to_dict()
-            result['credentials'] = self.credentials.to_dict()
+            result['user_config'] = self.user_config.to_dict(omit_none=True)
+            result['credentials'] = self.credentials.to_dict(omit_none=True)
         return result
 
     def to_target_dict(self) -> Dict[str, Any]:
@@ -122,7 +145,7 @@ class Profile(HasCredentials):
             'name': self.target_name,
             'target_name': self.target_name,
             'profile_name': self.profile_name,
-            'config': self.config.to_dict(),
+            'config': self.user_config.to_dict(omit_none=True),
         })
         return target
 
@@ -135,10 +158,10 @@ class Profile(HasCredentials):
     def validate(self):
         try:
             if self.credentials:
-                self.credentials.to_dict(validate=True)
-            ProfileConfig.from_dict(
-                self.to_profile_info(serialize_credentials=True)
-            )
+                dct = self.credentials.to_dict(omit_none=True)
+                self.credentials.validate(dct)
+            dct = self.to_profile_info(serialize_credentials=True)
+            ProfileConfig.validate(dct)
         except ValidationError as exc:
             raise DbtProfileError(validator_error_message(exc)) from exc
 
@@ -158,7 +181,9 @@ class Profile(HasCredentials):
         typename = profile.pop('type')
         try:
             cls = load_plugin(typename)
-            credentials = cls.from_dict(profile)
+            data = cls.translate_aliases(profile)
+            cls.validate(data)
+            credentials = cls.from_dict(data)
         except (RuntimeException, ValidationError) as e:
             msg = str(e) if isinstance(e, RuntimeException) else e.message
             raise DbtProfileError(
@@ -198,6 +223,14 @@ class Profile(HasCredentials):
                    .format(profile_name, target_name, outputs))
             raise DbtProfileError(msg, result_type='invalid_target')
         profile_data = outputs[target_name]
+
+        if not isinstance(profile_data, dict):
+            msg = (
+                f"output '{target_name}' of profile '{profile_name}' is "
+                f"misconfigured in profiles.yml"
+            )
+            raise DbtProfileError(msg, result_type='invalid_target')
+
         return profile_data
 
     @classmethod
@@ -207,7 +240,7 @@ class Profile(HasCredentials):
         threads: int,
         profile_name: str,
         target_name: str,
-        user_cfg: Optional[Dict[str, Any]] = None
+        user_config: Optional[Dict[str, Any]] = None
     ) -> 'Profile':
         """Create a profile from an existing set of Credentials and the
         remaining information.
@@ -216,19 +249,20 @@ class Profile(HasCredentials):
         :param threads: The number of threads to use for connections.
         :param profile_name: The profile name used for this profile.
         :param target_name: The target name used for this profile.
-        :param user_cfg: The user-level config block from the
+        :param user_config: The user-level config block from the
             raw profiles, if specified.
         :raises DbtProfileError: If the profile is invalid.
         :returns: The new Profile object.
         """
-        if user_cfg is None:
-            user_cfg = {}
-        config = UserConfig.from_dict(user_cfg)
+        if user_config is None:
+            user_config = {}
+        UserConfig.validate(user_config)
+        user_config_obj: UserConfig = UserConfig.from_dict(user_config)
 
         profile = cls(
             profile_name=profile_name,
             target_name=target_name,
-            config=config,
+            user_config=user_config_obj,
             threads=threads,
             credentials=credentials
         )
@@ -260,10 +294,7 @@ class Profile(HasCredentials):
             target_name = renderer.render_value(raw_profile['target'])
         else:
             target_name = 'default'
-            logger.debug(
-                "target not specified in profile '{}', using '{}'"
-                .format(profile_name, target_name)
-            )
+            fire_event(MissingProfileTarget(profile_name=profile_name, target_name=target_name))
 
         raw_profile_data = cls._get_profile_data(
             raw_profile, profile_name, target_name
@@ -281,7 +312,7 @@ class Profile(HasCredentials):
         raw_profile: Dict[str, Any],
         profile_name: str,
         renderer: ProfileRenderer,
-        user_cfg: Optional[Dict[str, Any]] = None,
+        user_config: Optional[Dict[str, Any]] = None,
         target_override: Optional[str] = None,
         threads_override: Optional[int] = None,
     ) -> 'Profile':
@@ -293,7 +324,7 @@ class Profile(HasCredentials):
             disk as yaml and its values rendered with jinja.
         :param profile_name: The profile name used.
         :param renderer: The config renderer.
-        :param user_cfg: The global config for the user, if it
+        :param user_config: The global config for the user, if it
             was present.
         :param target_override: The target to use, if provided on
             the command line.
@@ -303,9 +334,9 @@ class Profile(HasCredentials):
             target could not be found
         :returns: The new Profile object.
         """
-        # user_cfg is not rendered.
-        if user_cfg is None:
-            user_cfg = raw_profile.get('config')
+        # user_config is not rendered.
+        if user_config is None:
+            user_config = raw_profile.get('config')
         # TODO: should it be, and the values coerced to bool?
         target_name, profile_data = cls.render_profile(
             raw_profile, profile_name, target_override, renderer
@@ -326,7 +357,7 @@ class Profile(HasCredentials):
             profile_name=profile_name,
             target_name=target_name,
             threads=threads,
-            user_cfg=user_cfg
+            user_config=user_config
         )
 
     @classmethod
@@ -369,13 +400,13 @@ class Profile(HasCredentials):
                     error_string=msg
                 )
             )
-        user_cfg = raw_profiles.get('config')
+        user_config = raw_profiles.get('config')
 
         return cls.from_raw_profile_info(
             raw_profile=raw_profile,
             profile_name=profile_name,
             renderer=renderer,
-            user_cfg=user_cfg,
+            user_config=user_config,
             target_override=target_override,
             threads_override=threads_override,
         )
@@ -403,7 +434,7 @@ class Profile(HasCredentials):
         """
         threads_override = getattr(args, 'threads', None)
         target_override = getattr(args, 'target', None)
-        raw_profiles = read_profile(args.profiles_dir)
+        raw_profiles = read_profile(flags.PROFILES_DIR)
         profile_name = cls.pick_profile_name(getattr(args, 'profile', None),
                                              project_profile_name)
         return cls.from_raw_profiles(

core/dbt/config/project.py

@@ -2,48 +2,50 @@ from copy import deepcopy
 from dataclasses import dataclass, field
 from itertools import chain
 from typing import (
-    List, Dict, Any, Optional, TypeVar, Union, Tuple, Callable, Mapping,
-    Iterable, Set
+    List, Dict, Any, Optional, TypeVar, Union, Mapping,
 )
-from typing_extensions import Protocol
+from typing_extensions import Protocol, runtime_checkable
 
 import hashlib
 import os
 
+from dbt import deprecations
 from dbt.clients.system import resolve_path_from_base
 from dbt.clients.system import path_exists
 from dbt.clients.system import load_file_contents
 from dbt.clients.yaml_helper import load_yaml_text
 from dbt.contracts.connection import QueryComment
 from dbt.exceptions import DbtProjectError
-from dbt.exceptions import RecursionException
 from dbt.exceptions import SemverException
 from dbt.exceptions import validator_error_message
+from dbt.exceptions import RuntimeException
+from dbt.graph import SelectionSpec
 from dbt.helper_types import NoValue
 from dbt.semver import VersionSpecifier
 from dbt.semver import versions_compatible
 from dbt.version import get_installed_version
-from dbt.utils import deep_map, MultiDict
-from dbt.legacy_config_updater import ConfigUpdater, IsFQNResource
-
+from dbt.utils import MultiDict
+from dbt.node_types import NodeType
+from dbt.config.selectors import SelectorDict
 from dbt.contracts.project import (
-    ProjectV1 as ProjectV1Contract,
-    ProjectV2 as ProjectV2Contract,
-    parse_project_config,
+    Project as ProjectContract,
     SemverString,
 )
 from dbt.contracts.project import PackageConfig
-
-from hologram import ValidationError
-
+from dbt.dataclass_schema import ValidationError
 from .renderer import DbtProjectYamlRenderer
+from .selectors import (
+    selector_config_from_data,
+    selector_data_from_root,
+    SelectorConfig,
+)
 
 
 INVALID_VERSION_ERROR = """\
 This version of dbt is not supported with the '{package}' package.
   Installed version of dbt: {installed}
   Required version of dbt for '{package}': {version_spec}
-Check the requirements for the '{package}' package, or run dbt again with \
+Check for a different version of the '{package}' package, or run dbt again with \
 --no-version-check
 """
 
@@ -52,7 +54,7 @@ IMPOSSIBLE_VERSION_ERROR = """\
 The package version requirement can never be satisfied for the '{package}
 package.
   Required versions of dbt for '{package}': {version_spec}
-Check the requirements for the '{package}' package, or run dbt again with \
+Check for a different version of the '{package}' package, or run dbt again with \
 --no-version-check
 """
 
@@ -68,23 +70,11 @@ Validator Error:
 """
 
 
-def _list_if_none(value):
-    if value is None:
-        value = []
-    return value
-
-
-def _dict_if_none(value):
-    if value is None:
-        value = {}
-    return value
-
-
-def _list_if_none_or_string(value):
-    value = _list_if_none(value)
-    if isinstance(value, str):
-        return [value]
-    return value
+@runtime_checkable
+class IsFQNResource(Protocol):
+    fqn: List[str]
+    resource_type: NodeType
+    package_name: str
 
 
 def _load_yaml(path):
@@ -104,11 +94,12 @@ def package_data_from_root(project_root):
     return packages_dict
 
 
-def package_config_from_data(packages_data):
-    if packages_data is None:
+def package_config_from_data(packages_data: Dict[str, Any]):
+    if not packages_data:
         packages_data = {'packages': []}
 
     try:
+        PackageConfig.validate(packages_data)
         packages = PackageConfig.from_dict(packages_data)
     except ValidationError as e:
         raise DbtProjectError(
@@ -133,13 +124,13 @@ def _parse_versions(versions: Union[List[str], str]) -> List[VersionSpecifier]:
 
 
 def _all_source_paths(
-    source_paths: List[str],
-    data_paths: List[str],
+    model_paths: List[str],
+    seed_paths: List[str],
     snapshot_paths: List[str],
     analysis_paths: List[str],
     macro_paths: List[str],
 ) -> List[str]:
-    return list(chain(source_paths, data_paths, snapshot_paths, analysis_paths,
+    return list(chain(model_paths, seed_paths, snapshot_paths, analysis_paths,
                       macro_paths))
 
 
@@ -190,11 +181,69 @@ def _query_comment_from_cfg(
     return cfg_query_comment
 
 
+def validate_version(dbt_version: List[VersionSpecifier], project_name: str):
+    """Ensure this package works with the installed version of dbt."""
+    installed = get_installed_version()
+    if not versions_compatible(*dbt_version):
+        msg = IMPOSSIBLE_VERSION_ERROR.format(
+            package=project_name,
+            version_spec=[
+                x.to_version_string() for x in dbt_version
+            ]
+        )
+        raise DbtProjectError(msg)
+
+    if not versions_compatible(installed, *dbt_version):
+        msg = INVALID_VERSION_ERROR.format(
+            package=project_name,
+            installed=installed.to_version_string(),
+            version_spec=[
+                x.to_version_string() for x in dbt_version
+            ]
+        )
+        raise DbtProjectError(msg)
+
+
+def _get_required_version(
+    project_dict: Dict[str, Any],
+    verify_version: bool,
+) -> List[VersionSpecifier]:
+    dbt_raw_version: Union[List[str], str] = '>=0.0.0'
+    required = project_dict.get('require-dbt-version')
+    if required is not None:
+        dbt_raw_version = required
+
+    try:
+        dbt_version = _parse_versions(dbt_raw_version)
+    except SemverException as e:
+        raise DbtProjectError(str(e)) from e
+
+    if verify_version:
+        # no name is also an error that we want to raise
+        if 'name' not in project_dict:
+            raise DbtProjectError(
+                'Required "name" field not present in project',
+            )
+        validate_version(dbt_version, project_dict['name'])
+
+    return dbt_version
+
+
 @dataclass
-class PartialProject:
-    config_version: int = field(metadata=dict(
-        description='The version of the configuration file format'
-    ))
+class RenderComponents:
+    project_dict: Dict[str, Any] = field(
+        metadata=dict(description='The project dictionary')
+    )
+    packages_dict: Dict[str, Any] = field(
+        metadata=dict(description='The packages dictionary')
+    )
+    selectors_dict: Dict[str, Any] = field(
+        metadata=dict(description='The selectors dictionary')
+    )
+
+
+@dataclass
+class PartialProject(RenderComponents):
     profile_name: Optional[str] = field(metadata=dict(
         description='The unrendered profile name in the project, if set'
     ))
@@ -207,64 +256,255 @@ class PartialProject:
     project_root: str = field(
         metadata=dict(description='The root directory of the project'),
     )
-    project_dict: Dict[str, Any]
-
-    def render(self, renderer):
-        packages_dict = package_data_from_root(self.project_root)
-        return Project.render_from_dict(
-            self.project_root,
-            self.project_dict,
-            packages_dict,
-            renderer,
-        )
+    verify_version: bool = field(
+        metadata=dict(description=(
+            'If True, verify the dbt version matches the required version'
+        ))
+    )
 
     def render_profile_name(self, renderer) -> Optional[str]:
         if self.profile_name is None:
             return None
         return renderer.render_value(self.profile_name)
 
-
-class VarProvider(Protocol):
-    """Var providers are tied to a particular Project."""
-    def vars_for(
-        self, node: IsFQNResource, adapter_type: str
-    ) -> Mapping[str, Any]:
-        raise NotImplementedError(
-            f'vars_for not implemented for {type(self)}!'
-        )
-
-    def to_dict(self):
-        raise NotImplementedError(
-            f'to_dict not implemented for {type(self)}!'
-        )
-
-
-class V1VarProvider(VarProvider):
-    def __init__(
+    def get_rendered(
         self,
-        models: Dict[str, Any],
-        seeds: Dict[str, Any],
-        snapshots: Dict[str, Any],
-    ) -> None:
-        self.models = models
-        self.seeds = seeds
-        self.snapshots = snapshots
-        self.sources: Dict[str, Any] = {}
+        renderer: DbtProjectYamlRenderer,
+    ) -> RenderComponents:
 
-    def vars_for(
-        self, node: IsFQNResource, adapter_type: str
-    ) -> Mapping[str, Any]:
-        updater = ConfigUpdater(adapter_type)
-        return updater.get_project_config(node, self).get('vars', {})
+        rendered_project = renderer.render_project(
+            self.project_dict, self.project_root
+        )
+        rendered_packages = renderer.render_packages(self.packages_dict)
+        rendered_selectors = renderer.render_selectors(self.selectors_dict)
 
-    def to_dict(self):
-        raise ValidationError(
-            'to_dict was called on a v1 vars, but it should only be called '
-            'on v2 vars'
+        return RenderComponents(
+            project_dict=rendered_project,
+            packages_dict=rendered_packages,
+            selectors_dict=rendered_selectors,
+        )
+
+    # Called by 'collect_parts' in RuntimeConfig
+    def render(self, renderer: DbtProjectYamlRenderer) -> 'Project':
+        try:
+            rendered = self.get_rendered(renderer)
+            return self.create_project(rendered)
+        except DbtProjectError as exc:
+            if exc.path is None:
+                exc.path = os.path.join(self.project_root, 'dbt_project.yml')
+            raise
+
+    def check_config_path(self, project_dict, deprecated_path, exp_path):
+        if deprecated_path in project_dict:
+            if exp_path in project_dict:
+                msg = (
+                    '{deprecated_path} and {exp_path} cannot both be defined. The '
+                    '`{deprecated_path}` config has been deprecated in favor of `{exp_path}`. '
+                    'Please update your `dbt_project.yml` configuration to reflect this '
+                    'change.'
+                )
+                raise DbtProjectError(msg.format(deprecated_path=deprecated_path,
+                                                 exp_path=exp_path))
+            deprecations.warn(f'project-config-{deprecated_path}',
+                              deprecated_path=deprecated_path,
+                              exp_path=exp_path)
+
+    def create_project(self, rendered: RenderComponents) -> 'Project':
+        unrendered = RenderComponents(
+            project_dict=self.project_dict,
+            packages_dict=self.packages_dict,
+            selectors_dict=self.selectors_dict,
+        )
+        dbt_version = _get_required_version(
+            rendered.project_dict,
+            verify_version=self.verify_version,
+        )
+
+        self.check_config_path(rendered.project_dict, 'source-paths', 'model-paths')
+        self.check_config_path(rendered.project_dict, 'data-paths', 'seed-paths')
+
+        try:
+            ProjectContract.validate(rendered.project_dict)
+            cfg = ProjectContract.from_dict(
+                rendered.project_dict
+            )
+        except ValidationError as e:
+            raise DbtProjectError(validator_error_message(e)) from e
+        # name/version are required in the Project definition, so we can assume
+        # they are present
+        name = cfg.name
+        version = cfg.version
+        # this is added at project_dict parse time and should always be here
+        # once we see it.
+        if cfg.project_root is None:
+            raise DbtProjectError('cfg must have a project root!')
+        else:
+            project_root = cfg.project_root
+        # this is only optional in the sense that if it's not present, it needs
+        # to have been a cli argument.
+        profile_name = cfg.profile
+        # these are all the defaults
+
+        # `source_paths` is deprecated but still allowed. Copy it into
+        # `model_paths` to simlify logic throughout the rest of the system.
+        model_paths: List[str] = value_or(cfg.model_paths
+                                          if 'model-paths' in rendered.project_dict
+                                          else cfg.source_paths, ['models'])
+        macro_paths: List[str] = value_or(cfg.macro_paths, ['macros'])
+        # `data_paths` is deprecated but still allowed. Copy it into
+        # `seed_paths` to simlify logic throughout the rest of the system.
+        seed_paths: List[str] = value_or(cfg.seed_paths
+                                         if 'seed-paths' in rendered.project_dict
+                                         else cfg.data_paths, ['seeds'])
+        test_paths: List[str] = value_or(cfg.test_paths, ['tests'])
+        analysis_paths: List[str] = value_or(cfg.analysis_paths, ['analyses'])
+        snapshot_paths: List[str] = value_or(cfg.snapshot_paths, ['snapshots'])
+
+        all_source_paths: List[str] = _all_source_paths(
+            model_paths, seed_paths, snapshot_paths, analysis_paths,
+            macro_paths
+        )
+
+        docs_paths: List[str] = value_or(cfg.docs_paths, all_source_paths)
+        asset_paths: List[str] = value_or(cfg.asset_paths, [])
+        target_path: str = value_or(cfg.target_path, 'target')
+        clean_targets: List[str] = value_or(cfg.clean_targets, [target_path])
+        log_path: str = value_or(cfg.log_path, 'logs')
+        packages_install_path: str = value_or(cfg.packages_install_path, 'dbt_packages')
+        # in the default case we'll populate this once we know the adapter type
+        # It would be nice to just pass along a Quoting here, but that would
+        # break many things
+        quoting: Dict[str, Any] = {}
+        if cfg.quoting is not None:
+            quoting = cfg.quoting.to_dict(omit_none=True)
+
+        dispatch: List[Dict[str, Any]]
+        models: Dict[str, Any]
+        seeds: Dict[str, Any]
+        snapshots: Dict[str, Any]
+        sources: Dict[str, Any]
+        tests: Dict[str, Any]
+        vars_value: VarProvider
+
+        dispatch = cfg.dispatch
+        models = cfg.models
+        seeds = cfg.seeds
+        snapshots = cfg.snapshots
+        sources = cfg.sources
+        tests = cfg.tests
+        if cfg.vars is None:
+            vars_dict: Dict[str, Any] = {}
+        else:
+            vars_dict = cfg.vars
+
+        vars_value = VarProvider(vars_dict)
+        # There will never be any project_env_vars when it's first created
+        project_env_vars: Dict[str, Any] = {}
+        on_run_start: List[str] = value_or(cfg.on_run_start, [])
+        on_run_end: List[str] = value_or(cfg.on_run_end, [])
+
+        query_comment = _query_comment_from_cfg(cfg.query_comment)
+
+        packages = package_config_from_data(rendered.packages_dict)
+        selectors = selector_config_from_data(rendered.selectors_dict)
+        manifest_selectors: Dict[str, Any] = {}
+        if rendered.selectors_dict and rendered.selectors_dict['selectors']:
+            # this is a dict with a single key 'selectors' pointing to a list
+            # of dicts.
+            manifest_selectors = SelectorDict.parse_from_selectors_list(
+                rendered.selectors_dict['selectors'])
+        project = Project(
+            project_name=name,
+            version=version,
+            project_root=project_root,
+            profile_name=profile_name,
+            model_paths=model_paths,
+            macro_paths=macro_paths,
+            seed_paths=seed_paths,
+            test_paths=test_paths,
+            analysis_paths=analysis_paths,
+            docs_paths=docs_paths,
+            asset_paths=asset_paths,
+            target_path=target_path,
+            snapshot_paths=snapshot_paths,
+            clean_targets=clean_targets,
+            log_path=log_path,
+            packages_install_path=packages_install_path,
+            quoting=quoting,
+            models=models,
+            on_run_start=on_run_start,
+            on_run_end=on_run_end,
+            dispatch=dispatch,
+            seeds=seeds,
+            snapshots=snapshots,
+            dbt_version=dbt_version,
+            packages=packages,
+            manifest_selectors=manifest_selectors,
+            selectors=selectors,
+            query_comment=query_comment,
+            sources=sources,
+            tests=tests,
+            vars=vars_value,
+            config_version=cfg.config_version,
+            unrendered=unrendered,
+            project_env_vars=project_env_vars,
+        )
+        # sanity check - this means an internal issue
+        project.validate()
+        return project
+
+    @classmethod
+    def from_dicts(
+        cls,
+        project_root: str,
+        project_dict: Dict[str, Any],
+        packages_dict: Dict[str, Any],
+        selectors_dict: Dict[str, Any],
+        *,
+        verify_version: bool = False,
+    ):
+        """Construct a partial project from its constituent dicts.
+        """
+        project_name = project_dict.get('name')
+        profile_name = project_dict.get('profile')
+
+        return cls(
+            profile_name=profile_name,
+            project_name=project_name,
+            project_root=project_root,
+            project_dict=project_dict,
+            packages_dict=packages_dict,
+            selectors_dict=selectors_dict,
+            verify_version=verify_version,
+        )
+
+    @classmethod
+    def from_project_root(
+        cls, project_root: str, *, verify_version: bool = False
+    ) -> 'PartialProject':
+        project_root = os.path.normpath(project_root)
+        project_dict = _raw_project_from(project_root)
+        config_version = project_dict.get('config-version', 1)
+        if config_version != 2:
+            raise DbtProjectError(
+                f'Invalid config version: {config_version}, expected 2',
+                path=os.path.join(project_root, 'dbt_project.yml')
+            )
+
+        packages_dict = package_data_from_root(project_root)
+        selectors_dict = selector_data_from_root(project_root)
+        return cls.from_dicts(
+            project_root=project_root,
+            project_dict=project_dict,
+            selectors_dict=selectors_dict,
+            packages_dict=packages_dict,
+            verify_version=verify_version,
         )
 
 
-class V2VarProvider(VarProvider):
+class VarProvider:
+    """Var providers are tied to a particular Project."""
+
     def __init__(
         self,
         vars: Dict[str, Dict[str, Any]]
@@ -283,219 +523,58 @@ class V2VarProvider(VarProvider):
         return self.vars
 
 
+# The Project class is included in RuntimeConfig, so any attribute
+# additions must also be set where the RuntimeConfig class is created
 @dataclass
 class Project:
     project_name: str
     version: Union[SemverString, float]
     project_root: str
     profile_name: Optional[str]
-    source_paths: List[str]
+    model_paths: List[str]
     macro_paths: List[str]
-    data_paths: List[str]
+    seed_paths: List[str]
     test_paths: List[str]
     analysis_paths: List[str]
     docs_paths: List[str]
+    asset_paths: List[str]
     target_path: str
     snapshot_paths: List[str]
     clean_targets: List[str]
     log_path: str
-    modules_path: str
+    packages_install_path: str
     quoting: Dict[str, Any]
     models: Dict[str, Any]
     on_run_start: List[str]
     on_run_end: List[str]
+    dispatch: List[Dict[str, Any]]
     seeds: Dict[str, Any]
     snapshots: Dict[str, Any]
     sources: Dict[str, Any]
+    tests: Dict[str, Any]
     vars: VarProvider
     dbt_version: List[VersionSpecifier]
     packages: Dict[str, Any]
+    manifest_selectors: Dict[str, Any]
+    selectors: SelectorConfig
     query_comment: QueryComment
     config_version: int
+    unrendered: RenderComponents
+    project_env_vars: Dict[str, Any]
 
     @property
     def all_source_paths(self) -> List[str]:
         return _all_source_paths(
-            self.source_paths, self.data_paths, self.snapshot_paths,
+            self.model_paths, self.seed_paths, self.snapshot_paths,
             self.analysis_paths, self.macro_paths
         )
 
-    @staticmethod
-    def _preprocess(project_dict: Dict[str, Any]) -> Dict[str, Any]:
-        """Pre-process certain special keys to convert them from None values
-        into empty containers, and to turn strings into arrays of strings.
-        """
-        handlers: Dict[Tuple[Union[str, int], ...], Callable[[Any], Any]] = {
-            ('on-run-start',): _list_if_none_or_string,
-            ('on-run-end',): _list_if_none_or_string,
-        }
-
-        for k in ('models', 'seeds', 'snapshots'):
-            handlers[(k,)] = _dict_if_none
-            handlers[(k, 'vars')] = _dict_if_none
-            handlers[(k, 'pre-hook')] = _list_if_none_or_string
-            handlers[(k, 'post-hook')] = _list_if_none_or_string
-        handlers[('seeds', 'column_types')] = _dict_if_none
-
-        def converter(value: Any, keypath: Tuple[Union[str, int], ...]) -> Any:
-            if keypath in handlers:
-                handler = handlers[keypath]
-                return handler(value)
-            else:
-                return value
-
-        return deep_map(converter, project_dict)
-
-    @classmethod
-    def from_project_config(
-        cls,
-        project_dict: Dict[str, Any],
-        packages_dict: Optional[Dict[str, Any]] = None,
-    ) -> 'Project':
-        """Create a project from its project and package configuration, as read
-        by yaml.safe_load().
-
-        :param project_dict: The dictionary as read from disk
-        :param packages_dict: If it exists, the packages file as
-            read from disk.
-        :raises DbtProjectError: If the project is missing or invalid, or if
-            the packages file exists and is invalid.
-        :returns: The project, with defaults populated.
-        """
-        try:
-            project_dict = cls._preprocess(project_dict)
-        except RecursionException:
-            raise DbtProjectError(
-                'Cycle detected: Project input has a reference to itself',
-                project=project_dict
-            )
-        try:
-            cfg = parse_project_config(project_dict)
-        except ValidationError as e:
-            raise DbtProjectError(validator_error_message(e)) from e
-
-        # name/version are required in the Project definition, so we can assume
-        # they are present
-        name = cfg.name
-        version = cfg.version
-        # this is added at project_dict parse time and should always be here
-        # once we see it.
-        if cfg.project_root is None:
-            raise DbtProjectError('cfg must have a project root!')
-        else:
-            project_root = cfg.project_root
-        # this is only optional in the sense that if it's not present, it needs
-        # to have been a cli argument.
-        profile_name = cfg.profile
-        # these are all the defaults
-        source_paths: List[str] = value_or(cfg.source_paths, ['models'])
-        macro_paths: List[str] = value_or(cfg.macro_paths, ['macros'])
-        data_paths: List[str] = value_or(cfg.data_paths, ['data'])
-        test_paths: List[str] = value_or(cfg.test_paths, ['test'])
-        analysis_paths: List[str] = value_or(cfg.analysis_paths, [])
-        snapshot_paths: List[str] = value_or(cfg.snapshot_paths, ['snapshots'])
-
-        all_source_paths: List[str] = _all_source_paths(
-            source_paths, data_paths, snapshot_paths, analysis_paths,
-            macro_paths
-        )
-
-        docs_paths: List[str] = value_or(cfg.docs_paths, all_source_paths)
-        target_path: str = value_or(cfg.target_path, 'target')
-        clean_targets: List[str] = value_or(cfg.clean_targets, [target_path])
-        log_path: str = value_or(cfg.log_path, 'logs')
-        modules_path: str = value_or(cfg.modules_path, 'dbt_modules')
-        # in the default case we'll populate this once we know the adapter type
-        # It would be nice to just pass along a Quoting here, but that would
-        # break many things
-        quoting: Dict[str, Any] = {}
-        if cfg.quoting is not None:
-            quoting = cfg.quoting.to_dict()
-
-        models: Dict[str, Any]
-        seeds: Dict[str, Any]
-        snapshots: Dict[str, Any]
-        sources: Dict[str, Any]
-        vars_value: VarProvider
-
-        if cfg.config_version == 1:
-            assert isinstance(cfg, ProjectV1Contract)
-            # extract everything named 'vars'
-            models = cfg.models
-            seeds = cfg.seeds
-            snapshots = cfg.snapshots
-            sources = {}
-            vars_value = V1VarProvider(
-                models=models, seeds=seeds, snapshots=snapshots
-            )
-        elif cfg.config_version == 2:
-            assert isinstance(cfg, ProjectV2Contract)
-            models = cfg.models
-            seeds = cfg.seeds
-            snapshots = cfg.snapshots
-            sources = cfg.sources
-            if cfg.vars is None:
-                vars_dict: Dict[str, Any] = {}
-            else:
-                vars_dict = cfg.vars
-            vars_value = V2VarProvider(vars_dict)
-        else:
-            raise ValidationError(
-                f'Got unsupported config_version={cfg.config_version}'
-            )
-
-        on_run_start: List[str] = value_or(cfg.on_run_start, [])
-        on_run_end: List[str] = value_or(cfg.on_run_end, [])
-
-        # weird type handling: no value_or use
-        dbt_raw_version: Union[List[str], str] = '>=0.0.0'
-        if cfg.require_dbt_version is not None:
-            dbt_raw_version = cfg.require_dbt_version
-
-        query_comment = _query_comment_from_cfg(cfg.query_comment)
-
-        try:
-            dbt_version = _parse_versions(dbt_raw_version)
-        except SemverException as e:
-            raise DbtProjectError(str(e)) from e
-
-        try:
-            packages = package_config_from_data(packages_dict)
-        except ValidationError as e:
-            raise DbtProjectError(validator_error_message(e)) from e
-
-        project = cls(
-            project_name=name,
-            version=version,
-            project_root=project_root,
-            profile_name=profile_name,
-            source_paths=source_paths,
-            macro_paths=macro_paths,
-            data_paths=data_paths,
-            test_paths=test_paths,
-            analysis_paths=analysis_paths,
-            docs_paths=docs_paths,
-            target_path=target_path,
-            snapshot_paths=snapshot_paths,
-            clean_targets=clean_targets,
-            log_path=log_path,
-            modules_path=modules_path,
-            quoting=quoting,
-            models=models,
-            on_run_start=on_run_start,
-            on_run_end=on_run_end,
-            seeds=seeds,
-            snapshots=snapshots,
-            dbt_version=dbt_version,
-            packages=packages,
-            query_comment=query_comment,
-            sources=sources,
-            vars=vars_value,
-            config_version=cfg.config_version,
-        )
-        # sanity check - this means an internal issue
-        project.validate()
-        return project
+    @property
+    def generic_test_paths(self):
+        generic_test_paths = []
+        for test_path in self.test_paths:
+            generic_test_paths.append(os.path.join(test_path, 'generic'))
+        return generic_test_paths
 
     def __str__(self):
         cfg = self.to_project_config(with_packages=True)
@@ -521,12 +600,13 @@ class Project:
             'version': self.version,
             'project-root': self.project_root,
             'profile': self.profile_name,
-            'source-paths': self.source_paths,
+            'model-paths': self.model_paths,
             'macro-paths': self.macro_paths,
-            'data-paths': self.data_paths,
+            'seed-paths': self.seed_paths,
             'test-paths': self.test_paths,
             'analysis-paths': self.analysis_paths,
             'docs-paths': self.docs_paths,
+            'asset-paths': self.asset_paths,
             'target-path': self.target_path,
             'snapshot-paths': self.snapshot_paths,
             'clean-targets': self.clean_targets,
@@ -535,168 +615,76 @@ class Project:
             'models': self.models,
             'on-run-start': self.on_run_start,
             'on-run-end': self.on_run_end,
+            'dispatch': self.dispatch,
             'seeds': self.seeds,
             'snapshots': self.snapshots,
+            'sources': self.sources,
+            'tests': self.tests,
+            'vars': self.vars.to_dict(),
             'require-dbt-version': [
                 v.to_version_string() for v in self.dbt_version
             ],
             'config-version': self.config_version,
         })
         if self.query_comment:
-            result['query-comment'] = self.query_comment.to_dict()
+            result['query-comment'] = \
+                self.query_comment.to_dict(omit_none=True)
 
         if with_packages:
-            result.update(self.packages.to_dict())
-
-        if self.config_version == 2:
-            result.update({
-                'sources': self.sources,
-                'vars': self.vars.to_dict()
-            })
+            result.update(self.packages.to_dict(omit_none=True))
 
         return result
 
     def validate(self):
         try:
-            ProjectV2Contract.from_dict(self.to_project_config())
+            ProjectContract.validate(self.to_project_config())
         except ValidationError as e:
             raise DbtProjectError(validator_error_message(e)) from e
 
-    @classmethod
-    def render_from_dict(
-        cls,
-        project_root: str,
-        project_dict: Dict[str, Any],
-        packages_dict: Dict[str, Any],
-        renderer: DbtProjectYamlRenderer,
-    ) -> 'Project':
-        rendered_project = renderer.render_data(project_dict)
-        rendered_project['project-root'] = project_root
-        package_renderer = renderer.get_package_renderer()
-        rendered_packages = package_renderer.render_data(packages_dict)
-        try:
-            return cls.from_project_config(rendered_project, rendered_packages)
-        except DbtProjectError as exc:
-            if exc.path is None:
-                exc.path = os.path.join(project_root, 'dbt_project.yml')
-            raise
-
     @classmethod
     def partial_load(
-        cls, project_root: str
+        cls, project_root: str, *, verify_version: bool = False
     ) -> PartialProject:
-        project_root = os.path.normpath(project_root)
-        project_dict = _raw_project_from(project_root)
-
-        project_name = project_dict.get('name')
-        profile_name = project_dict.get('profile')
-        config_version = project_dict.get('config-version', 1)
-
-        return PartialProject(
-            config_version=config_version,
-            profile_name=profile_name,
-            project_name=project_name,
-            project_root=project_root,
-            project_dict=project_dict,
+        return PartialProject.from_project_root(
+            project_root,
+            verify_version=verify_version,
         )
 
     @classmethod
     def from_project_root(
-        cls, project_root: str, renderer: DbtProjectYamlRenderer
+        cls,
+        project_root: str,
+        renderer: DbtProjectYamlRenderer,
+        *,
+        verify_version: bool = False,
     ) -> 'Project':
-        partial = cls.partial_load(project_root)
-        renderer.version = partial.config_version
+        partial = cls.partial_load(project_root, verify_version=verify_version)
         return partial.render(renderer)
 
     def hashed_name(self):
         return hashlib.md5(self.project_name.encode('utf-8')).hexdigest()
 
-    def validate_version(self):
-        """Ensure this package works with the installed version of dbt."""
-        installed = get_installed_version()
-        if not versions_compatible(*self.dbt_version):
-            msg = IMPOSSIBLE_VERSION_ERROR.format(
-                package=self.project_name,
-                version_spec=[
-                    x.to_version_string() for x in self.dbt_version
-                ]
+    def get_selector(self, name: str) -> Union[SelectionSpec, bool]:
+        if name not in self.selectors:
+            raise RuntimeException(
+                f'Could not find selector named {name}, expected one of '
+                f'{list(self.selectors)}'
             )
-            raise DbtProjectError(msg)
+        return self.selectors[name]["definition"]
 
-        if not versions_compatible(installed, *self.dbt_version):
-            msg = INVALID_VERSION_ERROR.format(
-                package=self.project_name,
-                installed=installed.to_version_string(),
-                version_spec=[
-                    x.to_version_string() for x in self.dbt_version
-                ]
-            )
-            raise DbtProjectError(msg)
+    def get_default_selector_name(self) -> Union[str, None]:
+        """This function fetch the default selector to use on `dbt run` (if any)
+        :return: either a selector if default is set or None
+        :rtype: Union[SelectionSpec, None]
+        """
+        for selector_name, selector in self.selectors.items():
+            if selector["default"] is True:
+                return selector_name
 
-    def as_v1(self, all_projects: Iterable[str]):
-        if self.config_version == 1:
-            return self
+        return None
 
-        dct = self.to_project_config()
-
-        mutated = deepcopy(dct)
-        # remove sources, it doesn't exist
-        mutated.pop('sources', None)
-
-        common_config_keys = ['models', 'seeds', 'snapshots']
-
-        if 'vars' in dct and isinstance(dct['vars'], dict):
-            v2_vars_to_v1(mutated, dct['vars'], set(all_projects))
-        # ok, now we want to look through all the existing cfgkeys and mirror
-        # it, except expand the '+' prefix.
-        for cfgkey in common_config_keys:
-            if cfgkey not in dct:
-                continue
-
-            mutated[cfgkey] = _flatten_config(dct[cfgkey])
-        mutated['config-version'] = 1
-        project = Project.from_project_config(mutated)
-        project.packages = self.packages
-        return project
-
-
-def v2_vars_to_v1(
-    dst: Dict[str, Any], src_vars: Dict[str, Any], project_names: Set[str]
-) -> None:
-    # stuff any 'vars' entries into the old-style
-    # models/seeds/snapshots dicts
-    common_config_keys = ['models', 'seeds', 'snapshots']
-    for project_name in project_names:
-        for cfgkey in common_config_keys:
-            if cfgkey not in dst:
-                dst[cfgkey] = {}
-            if project_name not in dst[cfgkey]:
-                dst[cfgkey][project_name] = {}
-            project_type_cfg = dst[cfgkey][project_name]
-
-            if 'vars' not in project_type_cfg:
-                project_type_cfg['vars'] = {}
-            project_type_vars = project_type_cfg['vars']
-
-            project_type_vars.update({
-                k: v for k, v in src_vars.items()
-                if not isinstance(v, dict)
-            })
-
-            items = src_vars.get(project_name, None)
-            if isinstance(items, dict):
-                project_type_vars.update(items)
-    # remove this from the v1 form
-    dst.pop('vars')
-
-
-def _flatten_config(dct: Dict[str, Any]):
-    result = {}
-    for key, value in dct.items():
-        if isinstance(value, dict) and not key.startswith('+'):
-            result[key] = _flatten_config(value)
-        else:
-            if key.startswith('+'):
-                key = key[1:]
-            result[key] = value
-    return result
+    def get_macro_search_order(self, macro_namespace: str):
+        for dispatch_entry in self.dispatch:
+            if dispatch_entry['macro_namespace'] == macro_namespace:
+                return dispatch_entry['search_order']
+        return None

core/dbt/config/renderer.py

@@ -1,12 +1,14 @@
-from typing import Dict, Any, Tuple, Optional, Union
+from typing import Dict, Any, Tuple, Optional, Union, Callable
 
 from dbt.clients.jinja import get_rendered, catch_jinja
-
+from dbt.context.target import TargetContext
+from dbt.context.secret import SecretContext
+from dbt.context.base import BaseContext
+from dbt.contracts.connection import HasCredentials
 from dbt.exceptions import (
     DbtProjectError, CompilationException, RecursionException
 )
-from dbt.node_types import NodeType
-from dbt.utils import deep_map
+from dbt.utils import deep_map_render
 
 
 Keypath = Tuple[Union[str, int], ...]
@@ -47,7 +49,7 @@ class BaseRenderer:
         self, data: Dict[str, Any]
     ) -> Dict[str, Any]:
         try:
-            return deep_map(self.render_entry, data)
+            return deep_map_render(self.render_entry, data)
         except RecursionException:
             raise DbtProjectError(
                 f'Cycle detected: {self.name} input has a reference to itself',
@@ -55,12 +57,66 @@ class BaseRenderer:
             )
 
 
+def _list_if_none(value):
+    if value is None:
+        value = []
+    return value
+
+
+def _dict_if_none(value):
+    if value is None:
+        value = {}
+    return value
+
+
+def _list_if_none_or_string(value):
+    value = _list_if_none(value)
+    if isinstance(value, str):
+        return [value]
+    return value
+
+
+class ProjectPostprocessor(Dict[Keypath, Callable[[Any], Any]]):
+    def __init__(self):
+        super().__init__()
+
+        self[('on-run-start',)] = _list_if_none_or_string
+        self[('on-run-end',)] = _list_if_none_or_string
+
+        for k in ('models', 'seeds', 'snapshots'):
+            self[(k,)] = _dict_if_none
+            self[(k, 'vars')] = _dict_if_none
+            self[(k, 'pre-hook')] = _list_if_none_or_string
+            self[(k, 'post-hook')] = _list_if_none_or_string
+        self[('seeds', 'column_types')] = _dict_if_none
+
+    def postprocess(self, value: Any, key: Keypath) -> Any:
+        if key in self:
+            handler = self[key]
+            return handler(value)
+
+        return value
+
+
 class DbtProjectYamlRenderer(BaseRenderer):
+    _KEYPATH_HANDLERS = ProjectPostprocessor()
+
     def __init__(
-        self, context: Dict[str, Any], version: Optional[int] = None
+        self, profile: Optional[HasCredentials] = None,
+        cli_vars: Optional[Dict[str, Any]] = None
     ) -> None:
+        # Generate contexts here because we want to save the context
+        # object in order to retrieve the env_vars. This is almost always
+        # a TargetContext, but in the debug task we want a project
+        # even when we don't have a profile.
+        if cli_vars is None:
+            cli_vars = {}
+        if profile:
+            self.ctx_obj = TargetContext(profile, cli_vars)
+        else:
+            self.ctx_obj = BaseContext(cli_vars)  # type:ignore
+        context = self.ctx_obj.to_dict()
         super().__init__(context)
-        self.version: Optional[int] = version
 
     @property
     def name(self):
@@ -69,26 +125,33 @@ class DbtProjectYamlRenderer(BaseRenderer):
     def get_package_renderer(self) -> BaseRenderer:
         return PackageRenderer(self.context)
 
-    def should_render_keypath_v1(self, keypath: Keypath) -> bool:
-        if not keypath:
-            return True
+    def get_selector_renderer(self) -> BaseRenderer:
+        return SelectorRenderer(self.context)
 
-        first = keypath[0]
-        # run hooks
-        if first in {'on-run-start', 'on-run-end', 'query-comment'}:
-            return False
-        # models have two things to avoid
-        if first in {'seeds', 'models', 'snapshots'}:
-            # model-level hooks
-            if 'pre-hook' in keypath or 'post-hook' in keypath:
-                return False
-            # model-level 'vars' declarations
-            if 'vars' in keypath:
-                return False
+    def render_project(
+        self,
+        project: Dict[str, Any],
+        project_root: str,
+    ) -> Dict[str, Any]:
+        """Render the project and insert the project root after rendering."""
+        rendered_project = self.render_data(project)
+        rendered_project['project-root'] = project_root
+        return rendered_project
 
-        return True
+    def render_packages(self, packages: Dict[str, Any]):
+        """Render the given packages dict"""
+        package_renderer = self.get_package_renderer()
+        return package_renderer.render_data(packages)
 
-    def should_render_keypath_v2(self, keypath: Keypath) -> bool:
+    def render_selectors(self, selectors: Dict[str, Any]):
+        selector_renderer = self.get_selector_renderer()
+        return selector_renderer.render_data(selectors)
+
+    def render_entry(self, value: Any, keypath: Keypath) -> Any:
+        result = super().render_entry(value, keypath)
+        return self._KEYPATH_HANDLERS.postprocess(result, keypath)
+
+    def should_render_keypath(self, keypath: Keypath) -> bool:
         if not keypath:
             return True
 
@@ -101,9 +164,9 @@ class DbtProjectYamlRenderer(BaseRenderer):
         if first == 'vars':
             return False
 
-        if first in {'seeds', 'models', 'snapshots', 'seeds'}:
+        if first in {'seeds', 'models', 'snapshots', 'tests'}:
             keypath_parts = {
-                (k.lstrip('+') if isinstance(k, str) else k)
+                (k.lstrip('+ ') if isinstance(k, str) else k)
                 for k in keypath
             }
             # model-level hooks
@@ -112,97 +175,37 @@ class DbtProjectYamlRenderer(BaseRenderer):
 
         return True
 
-    def should_render_keypath(self, keypath: Keypath) -> bool:
-        if self.version == 2:
-            return self.should_render_keypath_v2(keypath)
-        else:  # could be None
-            return self.should_render_keypath_v1(keypath)
 
-    def render_data(
-        self, data: Dict[str, Any]
-    ) -> Dict[str, Any]:
-        if self.version is None:
-            self.version = data.get('current-version')
-
-        try:
-            return deep_map(self.render_entry, data)
-        except RecursionException:
-            raise DbtProjectError(
-                f'Cycle detected: {self.name} input has a reference to itself',
-                project=data
-            )
-
-
-class ProfileRenderer(BaseRenderer):
+class SelectorRenderer(BaseRenderer):
     @property
     def name(self):
-        'Profile'
+        return 'Selector config'
 
 
-class SchemaYamlRenderer(BaseRenderer):
-    DOCUMENTABLE_NODES = frozenset(
-        n.pluralize() for n in NodeType.documentable()
-    )
+class SecretRenderer(BaseRenderer):
+    def __init__(
+        self, cli_vars: Optional[Dict[str, Any]] = None
+    ) -> None:
+        # Generate contexts here because we want to save the context
+        # object in order to retrieve the env_vars.
+        if cli_vars is None:
+            cli_vars = {}
+        self.ctx_obj = SecretContext(cli_vars)
+        context = self.ctx_obj.to_dict()
+        super().__init__(context)
 
     @property
     def name(self):
-        return 'Rendering yaml'
-
-    def _is_norender_key(self, keypath: Keypath) -> bool:
-        """
-        models:
-            - name: blah
-            - description: blah
-              tests: ...
-            - columns:
-                - name:
-                - description: blah
-                  tests: ...
-
-        Return True if it's tests or description - those aren't rendered
-        """
-        if len(keypath) >= 2 and keypath[1] in ('tests', 'description'):
-            return True
-
-        if (
-            len(keypath) >= 4 and
-            keypath[1] == 'columns' and
-            keypath[3] in ('tests', 'description')
-        ):
-            return True
-
-        return False
-
-    # don't render descriptions or test keyword arguments
-    def should_render_keypath(self, keypath: Keypath) -> bool:
-        if len(keypath) < 2:
-            return True
-
-        if keypath[0] not in self.DOCUMENTABLE_NODES:
-            return True
-
-        if len(keypath) < 3:
-            return True
-
-        if keypath[0] == NodeType.Source.pluralize():
-            if keypath[2] == 'description':
-                return False
-            if keypath[2] == 'tables':
-                if self._is_norender_key(keypath[3:]):
-                    return False
-        elif keypath[0] == NodeType.Macro.pluralize():
-            if keypath[2] == 'arguments':
-                if self._is_norender_key(keypath[3:]):
-                    return False
-            elif self._is_norender_key(keypath[1:]):
-                return False
-        else:  # keypath[0] in self.DOCUMENTABLE_NODES:
-            if self._is_norender_key(keypath[1:]):
-                return False
-        return True
+        return 'Secret'
 
 
-class PackageRenderer(BaseRenderer):
+class ProfileRenderer(SecretRenderer):
+    @property
+    def name(self):
+        return 'Profile'
+
+
+class PackageRenderer(SecretRenderer):
     @property
     def name(self):
         return 'Packages config'

core/dbt/config/runtime.py

@@ -1,7 +1,7 @@
 import itertools
 import os
 from copy import deepcopy
-from dataclasses import dataclass, fields
+from dataclasses import dataclass
 from pathlib import Path
 from typing import (
     Dict, Any, Optional, Mapping, Iterator, Iterable, Tuple, List, MutableSet,
@@ -11,30 +11,39 @@ from typing import (
 from .profile import Profile
 from .project import Project
 from .renderer import DbtProjectYamlRenderer, ProfileRenderer
-from dbt import tracking
-from dbt.adapters.factory import get_relation_class_by_name
+from .utils import parse_cli_vars
+from dbt import flags
+from dbt.adapters.factory import get_relation_class_by_name, get_include_paths
 from dbt.helper_types import FQNPath, PathSet
-from dbt.context.base import generate_base_context
-from dbt.context.target import generate_target_context
+from dbt.config.profile import read_user_config
 from dbt.contracts.connection import AdapterRequiredConfig, Credentials
 from dbt.contracts.graph.manifest import ManifestMetadata
-from dbt.logger import GLOBAL_LOGGER as logger
-from dbt.ui import printer
-from dbt.utils import parse_cli_vars
+from dbt.contracts.relation import ComponentName
+from dbt.ui import warning_tag
 
 from dbt.contracts.project import Configuration, UserConfig
 from dbt.exceptions import (
     RuntimeException,
-    DbtProfileError,
     DbtProjectError,
     validator_error_message,
     warn_or_error,
     raise_compiler_error
 )
-from dbt.include.global_project import PACKAGES
-from dbt.legacy_config_updater import ConfigUpdater
 
-from hologram import ValidationError
+from dbt.dataclass_schema import ValidationError
+
+
+def _project_quoting_dict(
+    proj: Project, profile: Profile
+) -> Dict[ComponentName, bool]:
+    src: Dict[str, Any] = profile.credentials.translate_aliases(proj.quoting)
+    result: Dict[ComponentName, bool] = {}
+    for key in ComponentName:
+        if key in src:
+            value = src[key]
+            if isinstance(value, bool):
+                result[key] = value
+    return result
 
 
 @dataclass
@@ -47,6 +56,7 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
     def __post_init__(self):
         self.validate()
 
+    # Called by 'new_project' and 'from_args'
     @classmethod
     def from_parts(
         cls,
@@ -65,8 +75,8 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
         quoting: Dict[str, Any] = (
             get_relation_class_by_name(profile.credentials.type)
             .get_default_quote_policy()
-            .replace_dict(project.quoting)
-        ).to_dict()
+            .replace_dict(_project_quoting_dict(project, profile))
+        ).to_dict(omit_none=True)
 
         cli_vars: Dict[str, Any] = parse_cli_vars(getattr(args, 'vars', '{}'))
 
@@ -74,32 +84,40 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
             project_name=project.project_name,
             version=project.version,
             project_root=project.project_root,
-            source_paths=project.source_paths,
+            model_paths=project.model_paths,
             macro_paths=project.macro_paths,
-            data_paths=project.data_paths,
+            seed_paths=project.seed_paths,
             test_paths=project.test_paths,
             analysis_paths=project.analysis_paths,
             docs_paths=project.docs_paths,
+            asset_paths=project.asset_paths,
             target_path=project.target_path,
             snapshot_paths=project.snapshot_paths,
             clean_targets=project.clean_targets,
             log_path=project.log_path,
-            modules_path=project.modules_path,
+            packages_install_path=project.packages_install_path,
             quoting=quoting,
             models=project.models,
             on_run_start=project.on_run_start,
             on_run_end=project.on_run_end,
+            dispatch=project.dispatch,
             seeds=project.seeds,
             snapshots=project.snapshots,
             dbt_version=project.dbt_version,
             packages=project.packages,
+            manifest_selectors=project.manifest_selectors,
+            selectors=project.selectors,
             query_comment=project.query_comment,
             sources=project.sources,
+            tests=project.tests,
             vars=project.vars,
             config_version=project.config_version,
+            unrendered=project.unrendered,
+            project_env_vars=project.project_env_vars,
+            profile_env_vars=profile.profile_env_vars,
             profile_name=profile.profile_name,
             target_name=profile.target_name,
-            config=profile.config,
+            user_config=profile.user_config,
             threads=profile.threads,
             credentials=profile.credentials,
             args=args,
@@ -107,6 +125,7 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
             dependencies=dependencies,
         )
 
+    # Called by 'load_projects' in this class
     def new_project(self, project_root: str) -> 'RuntimeConfig':
         """Given a new project root, read in its project dictionary, supply the
         existing project's profile info, and create a new project file.
@@ -121,18 +140,22 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
         profile.validate()
 
         # load the new project and its packages. Don't pass cli variables.
-        renderer = DbtProjectYamlRenderer(generate_target_context(profile, {}))
+        renderer = DbtProjectYamlRenderer(profile)
 
-        project = Project.from_project_root(project_root, renderer)
+        project = Project.from_project_root(
+            project_root,
+            renderer,
+            verify_version=bool(flags.VERSION_CHECK),
+        )
 
-        cfg = self.from_parts(
+        runtime_config = self.from_parts(
             project=project,
             profile=profile,
             args=deepcopy(self.args),
         )
         # force our quoting back onto the new project.
-        cfg.quoting = deepcopy(self.quoting)
-        return cfg
+        runtime_config.quoting = deepcopy(self.quoting)
+        return runtime_config
 
     def serialize(self) -> Dict[str, Any]:
         """Serialize the full configuration to a single dictionary. For any
@@ -154,13 +177,10 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
         :raises DbtProjectError: If the configuration fails validation.
         """
         try:
-            Configuration.from_dict(self.serialize())
+            Configuration.validate(self.serialize())
         except ValidationError as e:
             raise DbtProjectError(validator_error_message(e)) from e
 
-        if getattr(self.args, 'version_check', False):
-            self.validate_version()
-
     @classmethod
     def _get_rendered_profile(
         cls,
@@ -168,6 +188,7 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
         profile_renderer: ProfileRenderer,
         profile_name: Optional[str],
     ) -> Profile:
+
         return Profile.render_from_args(
             args, profile_renderer, profile_name
         )
@@ -178,24 +199,33 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
     ) -> Tuple[Project, Profile]:
         # profile_name from the project
         project_root = args.project_dir if args.project_dir else os.getcwd()
-        partial = Project.partial_load(project_root)
+        version_check = bool(flags.VERSION_CHECK)
+        partial = Project.partial_load(
+            project_root,
+            verify_version=version_check
+        )
 
         # build the profile using the base renderer and the one fact we know
+        # Note: only the named profile section is rendered. The rest of the
+        # profile is ignored.
         cli_vars: Dict[str, Any] = parse_cli_vars(getattr(args, 'vars', '{}'))
-        profile_renderer = ProfileRenderer(generate_base_context(cli_vars))
+        profile_renderer = ProfileRenderer(cli_vars)
         profile_name = partial.render_profile_name(profile_renderer)
-
         profile = cls._get_rendered_profile(
             args, profile_renderer, profile_name
         )
+        # Save env_vars encountered in rendering for partial parsing
+        profile.profile_env_vars = profile_renderer.ctx_obj.env_vars
 
         # get a new renderer using our target information and render the
         # project
-        ctx = generate_target_context(profile, cli_vars)
-        project_renderer = DbtProjectYamlRenderer(ctx, partial.config_version)
+        project_renderer = DbtProjectYamlRenderer(profile, cli_vars)
         project = partial.render(project_renderer)
+        # Save env_vars encountered in rendering for partial parsing
+        project.project_env_vars = project_renderer.ctx_obj.env_vars
         return (project, profile)
 
+    # Called in main.py, lib.py, task/base.py
     @classmethod
     def from_args(cls, args: Any) -> 'RuntimeConfig':
         """Given arguments, read in dbt_project.yml from the current directory,
@@ -229,32 +259,11 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
     ) -> PathSet:
         for key, value in config.items():
             if isinstance(value, dict) and not key.startswith('+'):
-                self._get_v2_config_paths(value, path + (key,), paths)
+                self._get_config_paths(value, path + (key,), paths)
             else:
                 paths.add(path)
         return frozenset(paths)
 
-    def _get_v1_config_paths(
-        self,
-        config: Dict[str, Any],
-        path: FQNPath,
-        paths: MutableSet[FQNPath],
-    ) -> PathSet:
-        keys = ConfigUpdater(self.credentials.type).ConfigKeys
-
-        for key, value in config.items():
-            if isinstance(value, dict):
-                if key in keys:
-                    if path not in paths:
-                        paths.add(path)
-                else:
-                    self._get_v1_config_paths(value, path + (key,), paths)
-            else:
-                if path not in paths:
-                    paths.add(path)
-
-        return frozenset(paths)
-
     def _get_config_paths(
         self,
         config: Dict[str, Any],
@@ -264,13 +273,15 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
         if paths is None:
             paths = set()
 
-        if self.config_version == 2:
-            return self._get_v2_config_paths(config, path, paths)
-        else:
-            return self._get_v1_config_paths(config, path, paths)
+        for key, value in config.items():
+            if isinstance(value, dict) and not key.startswith('+'):
+                self._get_v2_config_paths(value, path + (key,), paths)
+            else:
+                paths.add(path)
+        return frozenset(paths)
 
     def get_resource_config_paths(self) -> Dict[str, PathSet]:
-        """Return a dictionary with 'seeds' and 'models' keys whose values are
+        """Return a dictionary with resource type keys whose values are
         lists of lists of strings, where each inner list of strings represents
         a configured path in the resource.
         """
@@ -279,6 +290,7 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
             'seeds': self._get_config_paths(self.seeds),
             'snapshots': self._get_config_paths(self.snapshots),
             'sources': self._get_config_paths(self.sources),
+            'tests': self._get_config_paths(self.tests),
         }
 
     def get_unused_resource_config_paths(
@@ -317,13 +329,26 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
             len(unused),
             '\n'.join('- {}'.format('.'.join(u)) for u in unused)
         )
-        warn_or_error(msg, log_fmt=printer.yellow('{}'))
+
+        warn_or_error(msg, log_fmt=warning_tag('{}'))
 
     def load_dependencies(self) -> Mapping[str, 'RuntimeConfig']:
         if self.dependencies is None:
             all_projects = {self.project_name: self}
+            internal_packages = get_include_paths(self.credentials.type)
+            # raise exception if fewer installed packages than in packages.yml
+            count_packages_specified = len(self.packages.packages)  # type: ignore
+            count_packages_installed = len(tuple(self._get_project_directories()))
+            if count_packages_specified > count_packages_installed:
+                raise_compiler_error(
+                    f'dbt found {count_packages_specified} package(s) '
+                    f'specified in packages.yml, but only '
+                    f'{count_packages_installed} package(s) installed '
+                    f'in {self.packages_install_path}. Run "dbt deps" to '
+                    f'install package dependencies.'
+                )
             project_paths = itertools.chain(
-                map(Path, PACKAGES.values()),
+                internal_packages,
                 self._get_project_directories()
             )
             for project_name, project in self.load_projects(project_paths):
@@ -338,6 +363,10 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
             self.dependencies = all_projects
         return self.dependencies
 
+    def clear_dependencies(self):
+        self.dependencies = None
+
+    # Called by 'load_dependencies' in this class
     def load_projects(
         self, paths: Iterable[Path]
     ) -> Iterator[Tuple[str, 'RuntimeConfig']]:
@@ -346,31 +375,21 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
                 project = self.new_project(str(path))
             except DbtProjectError as e:
                 raise DbtProjectError(
-                    'Failed to read package at {}: {}'
-                    .format(path, e)
+                    f'Failed to read package: {e}',
+                    result_type='invalid_project',
+                    path=path,
                 ) from e
             else:
                 yield project.project_name, project
 
     def _get_project_directories(self) -> Iterator[Path]:
-        root = Path(self.project_root) / self.modules_path
+        root = Path(self.project_root) / self.packages_install_path
 
         if root.exists():
             for path in root.iterdir():
                 if path.is_dir() and not path.name.startswith('__'):
                     yield path
 
-    def as_v1(self, all_projects: Iterable[str]):
-        if self.config_version == 1:
-            return self
-
-        return self.from_parts(
-            project=Project.as_v1(self, all_projects),
-            profile=self,
-            args=self.args,
-            dependencies=self.dependencies,
-        )
-
 
 class UnsetCredentials(Credentials):
     def __init__(self):
@@ -380,6 +399,10 @@ class UnsetCredentials(Credentials):
     def type(self):
         return None
 
+    @property
+    def unique_field(self):
+        return None
+
     def connection_info(self, *args, **kwargs):
         return {}
 
@@ -387,21 +410,12 @@ class UnsetCredentials(Credentials):
         return ()
 
 
-class UnsetConfig(UserConfig):
-    def __getattribute__(self, name):
-        if name in {f.name for f in fields(UserConfig)}:
-            raise AttributeError(
-                f"'UnsetConfig' object has no attribute {name}"
-            )
-
-    def to_dict(self):
-        return {}
-
-
+# This is used by UnsetProfileConfig, for commands which do
+# not require a profile, i.e. dbt deps and clean
 class UnsetProfile(Profile):
     def __init__(self):
         self.credentials = UnsetCredentials()
-        self.config = UnsetConfig()
+        self.user_config = UserConfig()  # This will be read in _get_rendered_profile
         self.profile_name = ''
         self.target_name = ''
         self.threads = -1
@@ -418,6 +432,8 @@ class UnsetProfile(Profile):
         return Profile.__getattribute__(self, name)
 
 
+# This class is used by the dbt deps and clean commands, because they don't
+# require a functioning profile.
 @dataclass
 class UnsetProfileConfig(RuntimeConfig):
     """This class acts a lot _like_ a RuntimeConfig, except if your profile is
@@ -467,32 +483,40 @@ class UnsetProfileConfig(RuntimeConfig):
             project_name=project.project_name,
             version=project.version,
             project_root=project.project_root,
-            source_paths=project.source_paths,
+            model_paths=project.model_paths,
             macro_paths=project.macro_paths,
-            data_paths=project.data_paths,
+            seed_paths=project.seed_paths,
             test_paths=project.test_paths,
             analysis_paths=project.analysis_paths,
             docs_paths=project.docs_paths,
+            asset_paths=project.asset_paths,
             target_path=project.target_path,
             snapshot_paths=project.snapshot_paths,
             clean_targets=project.clean_targets,
             log_path=project.log_path,
-            modules_path=project.modules_path,
+            packages_install_path=project.packages_install_path,
             quoting=project.quoting,  # we never use this anyway.
             models=project.models,
             on_run_start=project.on_run_start,
             on_run_end=project.on_run_end,
+            dispatch=project.dispatch,
             seeds=project.seeds,
             snapshots=project.snapshots,
             dbt_version=project.dbt_version,
             packages=project.packages,
+            manifest_selectors=project.manifest_selectors,
+            selectors=project.selectors,
             query_comment=project.query_comment,
             sources=project.sources,
+            tests=project.tests,
             vars=project.vars,
             config_version=project.config_version,
+            unrendered=project.unrendered,
+            project_env_vars=project.project_env_vars,
+            profile_env_vars=profile.profile_env_vars,
             profile_name='',
             target_name='',
-            config=UnsetConfig(),
+            user_config=UserConfig(),
             threads=getattr(args, 'threads', 1),
             credentials=UnsetCredentials(),
             args=args,
@@ -507,22 +531,12 @@ class UnsetProfileConfig(RuntimeConfig):
         profile_renderer: ProfileRenderer,
         profile_name: Optional[str],
     ) -> Profile:
-        try:
-            profile = Profile.render_from_args(
-                args, profile_renderer, profile_name
-            )
-        except (DbtProjectError, DbtProfileError) as exc:
-            logger.debug(
-                'Profile not loaded due to error: {}', exc, exc_info=True
-            )
-            logger.info(
-                'No profile "{}" found, continuing with no target',
-                profile_name
-            )
-            # return the poisoned form
-            profile = UnsetProfile()
-            # disable anonymous usage statistics
-            tracking.disable_tracking()
+
+        profile = UnsetProfile()
+        # The profile (for warehouse connection) is not needed, but we want
+        # to get the UserConfig, which is also in profiles.yml
+        user_config = read_user_config(flags.PROFILES_DIR)
+        profile.user_config = user_config
         return profile
 
     @classmethod
@@ -537,9 +551,6 @@ class UnsetProfileConfig(RuntimeConfig):
         :raises ValidationException: If the cli variables are invalid.
         """
         project, profile = cls.collect_parts(args)
-        if not isinstance(profile, UnsetProfile):
-            # if it's a real profile, return a real config
-            cls = RuntimeConfig
 
         return cls.from_parts(
             project=project,
@@ -549,9 +560,10 @@ class UnsetProfileConfig(RuntimeConfig):
 
 
 UNUSED_RESOURCE_CONFIGURATION_PATH_MESSAGE = """\
-WARNING: Configuration paths exist in your dbt_project.yml file which do not \
+Configuration paths exist in your dbt_project.yml file which do not \
 apply to any resources.
-There are {} unused configuration paths:\n{}
+There are {} unused configuration paths:
+{}
 """
 
 

core/dbt/config/selectors.py

@@ -0,0 +1,201 @@
+from pathlib import Path
+from typing import Dict, Any, Union
+from dbt.clients.yaml_helper import (  # noqa: F401
+    yaml, Loader, Dumper, load_yaml_text
+)
+from dbt.dataclass_schema import ValidationError
+
+from .renderer import SelectorRenderer
+
+from dbt.clients.system import (
+    load_file_contents,
+    path_exists,
+    resolve_path_from_base,
+)
+from dbt.contracts.selection import SelectorFile
+from dbt.exceptions import DbtSelectorsError, RuntimeException
+from dbt.graph import parse_from_selectors_definition, SelectionSpec
+from dbt.graph.selector_spec import SelectionCriteria
+
+MALFORMED_SELECTOR_ERROR = """\
+The selectors.yml file in this project is malformed. Please double check
+the contents of this file and fix any errors before retrying.
+
+You can find more information on the syntax for this file here:
+https://docs.getdbt.com/docs/package-management
+
+Validator Error:
+{error}
+"""
+
+
+class SelectorConfig(Dict[str, Dict[str, Union[SelectionSpec, bool]]]):
+
+    @classmethod
+    def selectors_from_dict(cls, data: Dict[str, Any]) -> 'SelectorConfig':
+        try:
+            SelectorFile.validate(data)
+            selector_file = SelectorFile.from_dict(data)
+            validate_selector_default(selector_file)
+            selectors = parse_from_selectors_definition(selector_file)
+        except ValidationError as exc:
+            yaml_sel_cfg = yaml.dump(exc.instance)
+            raise DbtSelectorsError(
+                f"Could not parse selector file data: \n{yaml_sel_cfg}\n"
+                f"Valid root-level selector definitions: "
+                f"union, intersection, string, dictionary. No lists. "
+                f"\nhttps://docs.getdbt.com/reference/node-selection/"
+                f"yaml-selectors",
+                result_type='invalid_selector'
+            ) from exc
+        except RuntimeException as exc:
+            raise DbtSelectorsError(
+                f'Could not read selector file data: {exc}',
+                result_type='invalid_selector',
+            ) from exc
+
+        return cls(selectors)
+
+    @classmethod
+    def render_from_dict(
+        cls,
+        data: Dict[str, Any],
+        renderer: SelectorRenderer,
+    ) -> 'SelectorConfig':
+        try:
+            rendered = renderer.render_data(data)
+        except (ValidationError, RuntimeException) as exc:
+            raise DbtSelectorsError(
+                f'Could not render selector data: {exc}',
+                result_type='invalid_selector',
+            ) from exc
+        return cls.selectors_from_dict(rendered)
+
+    @classmethod
+    def from_path(
+        cls, path: Path, renderer: SelectorRenderer,
+    ) -> 'SelectorConfig':
+        try:
+            data = load_yaml_text(load_file_contents(str(path)))
+        except (ValidationError, RuntimeException) as exc:
+            raise DbtSelectorsError(
+                f'Could not read selector file: {exc}',
+                result_type='invalid_selector',
+                path=path,
+            ) from exc
+
+        try:
+            return cls.render_from_dict(data, renderer)
+        except DbtSelectorsError as exc:
+            exc.path = path
+            raise
+
+
+def selector_data_from_root(project_root: str) -> Dict[str, Any]:
+    selector_filepath = resolve_path_from_base(
+        'selectors.yml', project_root
+    )
+
+    if path_exists(selector_filepath):
+        selectors_dict = load_yaml_text(load_file_contents(selector_filepath))
+    else:
+        selectors_dict = None
+    return selectors_dict
+
+
+def selector_config_from_data(
+    selectors_data: Dict[str, Any]
+) -> SelectorConfig:
+    if not selectors_data:
+        selectors_data = {'selectors': []}
+
+    try:
+        selectors = SelectorConfig.selectors_from_dict(selectors_data)
+    except ValidationError as e:
+        raise DbtSelectorsError(
+            MALFORMED_SELECTOR_ERROR.format(error=str(e.message)),
+            result_type='invalid_selector',
+        ) from e
+    return selectors
+
+
+def validate_selector_default(selector_file: SelectorFile) -> None:
+    """Check if a selector.yml file has more than 1 default key set to true"""
+    default_set: bool = False
+    default_selector_name: Union[str, None] = None
+
+    for selector in selector_file.selectors:
+        if selector.default is True and default_set is False:
+            default_set = True
+            default_selector_name = selector.name
+            continue
+        if selector.default is True and default_set is True:
+            raise DbtSelectorsError(
+                "Error when parsing the selector file. "
+                "Found multiple selectors with `default: true`:"
+                f"{default_selector_name} and {selector.name}"
+            )
+
+
+# These are utilities to clean up the dictionary created from
+# selectors.yml by turning the cli-string format entries into
+# normalized dictionary entries. It parallels the flow in
+# dbt/graph/cli.py. If changes are made there, it might
+# be necessary to make changes here. Ideally it would be
+# good to combine the two flows into one at some point.
+class SelectorDict:
+
+    @classmethod
+    def parse_dict_definition(cls, definition):
+        key = list(definition)[0]
+        value = definition[key]
+        if isinstance(value, list):
+            new_values = []
+            for sel_def in value:
+                new_value = cls.parse_from_definition(sel_def)
+                new_values.append(new_value)
+            value = new_values
+        if key == 'exclude':
+            definition = {key: value}
+        elif len(definition) == 1:
+            definition = {'method': key, 'value': value}
+        return definition
+
+    @classmethod
+    def parse_a_definition(cls, def_type, definition):
+        # this definition must be a list
+        new_dict = {def_type: []}
+        for sel_def in definition[def_type]:
+            if isinstance(sel_def, dict):
+                sel_def = cls.parse_from_definition(sel_def)
+                new_dict[def_type].append(sel_def)
+            elif isinstance(sel_def, str):
+                sel_def = SelectionCriteria.dict_from_single_spec(sel_def)
+                new_dict[def_type].append(sel_def)
+            else:
+                new_dict[def_type].append(sel_def)
+        return new_dict
+
+    @classmethod
+    def parse_from_definition(cls, definition):
+        if isinstance(definition, str):
+            definition = SelectionCriteria.dict_from_single_spec(definition)
+        elif 'union' in definition:
+            definition = cls.parse_a_definition('union', definition)
+        elif 'intersection' in definition:
+            definition = cls.parse_a_definition('intersection', definition)
+        elif isinstance(definition, dict):
+            definition = cls.parse_dict_definition(definition)
+        return definition
+
+    # This is the normal entrypoint of this code. Give it the
+    # list of selectors generated from the selectors.yml file.
+    @classmethod
+    def parse_from_selectors_list(cls, selectors):
+        selector_dict = {}
+        for selector in selectors:
+            sel_name = selector['name']
+            selector_dict[sel_name] = selector
+            definition = cls.parse_from_definition(selector['definition'])
+            selector_dict[sel_name]['definition'] = definition
+        return selector_dict

core/dbt/config/utils.py

@@ -0,0 +1,22 @@
+from typing import Dict, Any
+
+from dbt.clients import yaml_helper
+from dbt.events.functions import fire_event
+from dbt.exceptions import raise_compiler_error, ValidationException
+from dbt.events.types import InvalidVarsYAML
+
+
+def parse_cli_vars(var_string: str) -> Dict[str, Any]:
+    try:
+        cli_vars = yaml_helper.load_yaml_text(var_string)
+        var_type = type(cli_vars)
+        if var_type is dict:
+            return cli_vars
+        else:
+            type_name = var_type.__name__
+            raise_compiler_error(
+                "The --vars argument must be a YAML dictionary, but was "
+                "of type '{}'".format(type_name))
+    except ValidationException:
+        fire_event(InvalidVarsYAML())
+        raise

core/dbt/context/README.md

@@ -0,0 +1 @@
+# Contexts and Jinja rendering

core/dbt/context/base.py

@@ -6,18 +6,57 @@ from typing import (
 
 from dbt import flags
 from dbt import tracking
-from dbt.clients.jinja import undefined_error, get_rendered
-from dbt.clients import yaml_helper
+from dbt.clients.jinja import get_rendered
+from dbt.clients.yaml_helper import (  # noqa: F401
+    yaml, safe_load, SafeLoader, Loader, Dumper
+)
 from dbt.contracts.graph.compiled import CompiledResource
-from dbt.exceptions import raise_compiler_error, MacroReturn
-from dbt.logger import GLOBAL_LOGGER as logger
+from dbt.exceptions import (
+    raise_compiler_error, MacroReturn, raise_parsing_error, disallow_secret_env_var
+)
+from dbt.logger import SECRET_ENV_PREFIX
+from dbt.events.functions import fire_event, get_invocation_id
+from dbt.events.types import MacroEventInfo, MacroEventDebug
 from dbt.version import __version__ as dbt_version
 
-import yaml
 # These modules are added to the context. Consider alternative
 # approaches which will extend well to potentially many modules
 import pytz
 import datetime
+import re
+
+# Contexts in dbt Core
+# Contexts are used for Jinja rendering. They include context methods,
+# executable macros, and various settings that are available in Jinja.
+#
+# Different contexts are used in different places because we allow access
+# to different methods and data in different places. Executable SQL, for
+# example, includes the available macros and the model, while Jinja in
+# yaml files is more limited.
+#
+# The context that is passed to Jinja is always in a dictionary format,
+# not an actual class, so a 'to_dict()' is executed on a context class
+# before it is used for rendering.
+#
+# Each context has a generate_<name>_context function to create the context.
+# ProviderContext subclasses have different generate functions for
+# parsing and for execution.
+#
+# Context class hierarchy
+#
+#   BaseContext -- core/dbt/context/base.py
+#     SecretContext -- core/dbt/context/secret.py
+#     TargetContext -- core/dbt/context/target.py
+#       ConfiguredContext -- core/dbt/context/configured.py
+#         SchemaYamlContext -- core/dbt/context/configured.py
+#           DocsRuntimeContext -- core/dbt/context/configured.py
+#         MacroResolvingContext -- core/dbt/context/configured.py
+#         ManifestContext -- core/dbt/context/manifest.py
+#           QueryHeaderContext -- core/dbt/context/manifest.py
+#           ProviderContext -- core/dbt/context/provider.py
+#             MacroContext -- core/dbt/context/provider.py
+#             ModelContext -- core/dbt/context/provider.py
+#             TestContext -- core/dbt/context/provider.py
 
 
 def get_pytz_module_context() -> Dict[str, Any]:
@@ -42,10 +81,19 @@ def get_datetime_module_context() -> Dict[str, Any]:
     }
 
 
+def get_re_module_context() -> Dict[str, Any]:
+    context_exports = re.__all__
+
+    return {
+        name: getattr(re, name) for name in context_exports
+    }
+
+
 def get_context_modules() -> Dict[str, Dict[str, Any]]:
     return {
         'pytz': get_pytz_module_context(),
         'datetime': get_datetime_module_context(),
+        're': get_re_module_context(),
     }
 
 
@@ -105,39 +153,39 @@ class Var:
         cli_vars: Mapping[str, Any],
         node: Optional[CompiledResource] = None
     ) -> None:
-        self.context: Mapping[str, Any] = context
-        self.cli_vars: Mapping[str, Any] = cli_vars
-        self.node: Optional[CompiledResource] = node
-        self.merged: Mapping[str, Any] = self._generate_merged()
+        self._context: Mapping[str, Any] = context
+        self._cli_vars: Mapping[str, Any] = cli_vars
+        self._node: Optional[CompiledResource] = node
+        self._merged: Mapping[str, Any] = self._generate_merged()
 
     def _generate_merged(self) -> Mapping[str, Any]:
-        return self.cli_vars
+        return self._cli_vars
 
     @property
     def node_name(self):
-        if self.node is not None:
-            return self.node.name
+        if self._node is not None:
+            return self._node.name
         else:
             return '<Configuration>'
 
     def get_missing_var(self, var_name):
-        dct = {k: self.merged[k] for k in self.merged}
+        dct = {k: self._merged[k] for k in self._merged}
         pretty_vars = json.dumps(dct, sort_keys=True, indent=4)
         msg = self.UndefinedVarError.format(
             var_name, self.node_name, pretty_vars
         )
-        raise_compiler_error(msg, self.node)
+        raise_compiler_error(msg, self._node)
 
     def has_var(self, var_name: str):
-        return var_name in self.merged
+        return var_name in self._merged
 
     def get_rendered_var(self, var_name):
-        raw = self.merged[var_name]
+        raw = self._merged[var_name]
         # if bool/int/float/etc are passed in, don't compile anything
         if not isinstance(raw, str):
             return raw
 
-        return get_rendered(raw, self.context)
+        return get_rendered(raw, self._context)
 
     def __call__(self, var_name, default=_VAR_NOTSET):
         if self.has_var(var_name):
@@ -149,9 +197,11 @@ class Var:
 
 
 class BaseContext(metaclass=ContextMeta):
+    # subclass is TargetContext
     def __init__(self, cli_vars):
         self._ctx = {}
         self.cli_vars = cli_vars
+        self.env_vars = {}
 
     def generate_builtins(self):
         builtins: Dict[str, Any] = {}
@@ -162,6 +212,7 @@ class BaseContext(metaclass=ContextMeta):
             builtins[key] = value
         return builtins
 
+    # no dbtClassMixin so this is not an actual override
     def to_dict(self):
         self._ctx['context'] = self._ctx
         builtins = self.generate_builtins()
@@ -259,20 +310,26 @@ class BaseContext(metaclass=ContextMeta):
         return Var(self._ctx, self.cli_vars)
 
     @contextmember
-    @staticmethod
-    def env_var(var: str, default: Optional[str] = None) -> str:
+    def env_var(self, var: str, default: Optional[str] = None) -> str:
         """The env_var() function. Return the environment variable named 'var'.
         If there is no such environment variable set, return the default.
 
         If the default is None, raise an exception for an undefined variable.
         """
+        return_value = None
+        if var.startswith(SECRET_ENV_PREFIX):
+            disallow_secret_env_var(var)
         if var in os.environ:
-            return os.environ[var]
+            return_value = os.environ[var]
         elif default is not None:
-            return default
+            return_value = default
+
+        if return_value is not None:
+            self.env_vars[var] = return_value
+            return return_value
         else:
             msg = f"Env var required but not provided: '{var}'"
-            undefined_error(msg)
+            raise_parsing_error(msg)
 
     if os.environ.get('DBT_MACRO_DEBUGGING'):
         @contextmember
@@ -384,7 +441,7 @@ class BaseContext(metaclass=ContextMeta):
             -- ["good"]
         """
         try:
-            return yaml_helper.safe_load(value)
+            return safe_load(value)
         except (AttributeError, ValueError, yaml.YAMLError):
             return default
 
@@ -431,9 +488,9 @@ class BaseContext(metaclass=ContextMeta):
             {% endmacro %}"
         """
         if info:
-            logger.info(msg)
+            fire_event(MacroEventInfo(msg=msg))
         else:
-            logger.debug(msg)
+            fire_event(MacroEventDebug(msg=msg))
         return ''
 
     @contextproperty
@@ -469,10 +526,7 @@ class BaseContext(metaclass=ContextMeta):
         """invocation_id outputs a UUID generated for this dbt run (useful for
         auditing)
         """
-        if tracking.active_user is not None:
-            return tracking.active_user.invocation_id
-        else:
-            return None
+        return get_invocation_id()
 
     @contextproperty
     def modules(self) -> Dict[str, Any]:
@@ -512,18 +566,13 @@ class BaseContext(metaclass=ContextMeta):
             -- no-op
             {% endif %}
 
-        The list of valid flags are:
-
-        - `flags.STRICT_MODE`: True if `--strict` (or `-S`) was provided on the
-            command line
-        - `flags.FULL_REFRESH`: True if `--full-refresh` was provided on the
-            command line
-        - `flags.NON_DESTRUCTIVE`: True if `--non-destructive` was provided on
-            the command line
+        This supports all flags defined in flags submodule (core/dbt/flags.py)
+        TODO: Replace with object that provides read-only access to flag values
         """
         return flags
 
 
 def generate_base_context(cli_vars: Dict[str, Any]) -> Dict[str, Any]:
     ctx = BaseContext(cli_vars)
+    # This is not a Mashumaro to_dict call
     return ctx.to_dict()

core/dbt/context/configured.py

@@ -1,20 +1,18 @@
-from typing import Any, Dict, Iterable, Union, Optional
+import os
+from typing import Any, Dict, Optional
 
-from dbt.clients.jinja import MacroGenerator, MacroStack
 from dbt.contracts.connection import AdapterRequiredConfig
-from dbt.contracts.graph.manifest import Manifest
-from dbt.contracts.graph.parsed import ParsedMacro
-from dbt.include.global_project import PACKAGES
-from dbt.include.global_project import PROJECT_NAME as GLOBAL_PROJECT_NAME
+from dbt.logger import SECRET_ENV_PREFIX
 from dbt.node_types import NodeType
 from dbt.utils import MultiDict
 
-from dbt.context.base import contextproperty, Var
+from dbt.context.base import contextproperty, contextmember, Var
 from dbt.context.target import TargetContext
-from dbt.exceptions import raise_duplicate_macro_name
+from dbt.exceptions import raise_parsing_error, disallow_secret_env_var
 
 
 class ConfiguredContext(TargetContext):
+    # subclasses are SchemaYamlContext, MacroResolvingContext, ManifestContext
     config: AdapterRequiredConfig
 
     def __init__(
@@ -42,27 +40,26 @@ class ConfiguredVar(Var):
         project_name: str,
     ):
         super().__init__(context, config.cli_vars)
-        self.config = config
-        self.project_name = project_name
+        self._config = config
+        self._project_name = project_name
 
     def __call__(self, var_name, default=Var._VAR_NOTSET):
-        my_config = self.config.load_dependencies()[self.project_name]
+        my_config = self._config.load_dependencies()[self._project_name]
 
         # cli vars > active project > local project
-        if var_name in self.config.cli_vars:
-            return self.config.cli_vars[var_name]
+        if var_name in self._config.cli_vars:
+            return self._config.cli_vars[var_name]
 
-        if self.config.config_version == 2 and my_config.config_version == 2:
-            adapter_type = self.config.credentials.type
-            lookup = FQNLookup(self.project_name)
-            active_vars = self.config.vars.vars_for(lookup, adapter_type)
-            all_vars = MultiDict([active_vars])
+        adapter_type = self._config.credentials.type
+        lookup = FQNLookup(self._project_name)
+        active_vars = self._config.vars.vars_for(lookup, adapter_type)
+        all_vars = MultiDict([active_vars])
 
-            if self.config.project_name != my_config.project_name:
-                all_vars.add(my_config.vars.vars_for(lookup, adapter_type))
+        if self._config.project_name != my_config.project_name:
+            all_vars.add(my_config.vars.vars_for(lookup, adapter_type))
 
-            if var_name in all_vars:
-                return all_vars[var_name]
+        if var_name in all_vars:
+            return all_vars[var_name]
 
         if default is not Var._VAR_NOTSET:
             return default
@@ -70,10 +67,18 @@ class ConfiguredVar(Var):
         return self.get_missing_var(var_name)
 
 
+class SchemaYamlVars():
+    def __init__(self):
+        self.env_vars = {}
+        self.vars = {}
+
+
 class SchemaYamlContext(ConfiguredContext):
-    def __init__(self, config, project_name: str):
+    # subclass is DocsRuntimeContext
+    def __init__(self, config, project_name: str, schema_yaml_vars: Optional[SchemaYamlVars]):
         super().__init__(config)
         self._project_name = project_name
+        self.schema_yaml_vars = schema_yaml_vars
 
     @contextproperty
     def var(self) -> ConfiguredVar:
@@ -81,120 +86,45 @@ class SchemaYamlContext(ConfiguredContext):
             self._ctx, self.config, self._project_name
         )
 
+    @contextmember
+    def env_var(self, var: str, default: Optional[str] = None) -> str:
+        return_value = None
+        if var.startswith(SECRET_ENV_PREFIX):
+            disallow_secret_env_var(var)
+        if var in os.environ:
+            return_value = os.environ[var]
+        elif default is not None:
+            return_value = default
 
-FlatNamespace = Dict[str, MacroGenerator]
-NamespaceMember = Union[FlatNamespace, MacroGenerator]
-FullNamespace = Dict[str, NamespaceMember]
-
-
-class MacroNamespace:
-    def __init__(
-        self,
-        root_package: str,
-        search_package: str,
-        thread_ctx: MacroStack,
-        node: Optional[Any] = None,
-    ) -> None:
-        self.root_package = root_package
-        self.search_package = search_package
-        self.globals: FlatNamespace = {}
-        self.locals: FlatNamespace = {}
-        self.packages: Dict[str, FlatNamespace] = {}
-        self.thread_ctx = thread_ctx
-        self.node = node
-
-    def add_macro(self, macro: ParsedMacro, ctx: Dict[str, Any]):
-        macro_name: str = macro.name
-        macro_func: MacroGenerator = MacroGenerator(
-            macro, ctx, self.node, self.thread_ctx
-        )
-
-        # put plugin macros into the root namespace
-        if macro.package_name in PACKAGES:
-            namespace: str = GLOBAL_PROJECT_NAME
+        if return_value is not None:
+            if self.schema_yaml_vars:
+                self.schema_yaml_vars.env_vars[var] = return_value
+            return return_value
         else:
-            namespace = macro.package_name
-
-        if namespace not in self.packages:
-            value: Dict[str, MacroGenerator] = {}
-            self.packages[namespace] = value
-
-        if macro_name in self.packages[namespace]:
-            raise_duplicate_macro_name(macro_func.macro, macro, namespace)
-        self.packages[namespace][macro_name] = macro_func
-
-        if namespace == self.search_package:
-            self.locals[macro_name] = macro_func
-        elif namespace in {self.root_package, GLOBAL_PROJECT_NAME}:
-            self.globals[macro_name] = macro_func
-
-    def add_macros(self, macros: Iterable[ParsedMacro], ctx: Dict[str, Any]):
-        for macro in macros:
-            self.add_macro(macro, ctx)
-
-    def get_macro_dict(self) -> FullNamespace:
-        root_namespace: FullNamespace = {}
-
-        root_namespace.update(self.packages)
-        root_namespace.update(self.globals)
-        root_namespace.update(self.locals)
-
-        return root_namespace
+            msg = f"Env var required but not provided: '{var}'"
+            raise_parsing_error(msg)
 
 
-class ManifestContext(ConfiguredContext):
-    """The Macro context has everything in the target context, plus the macros
-    in the manifest.
-
-    The given macros can override any previous context values, which will be
-    available as if they were accessed relative to the package name.
-    """
-    def __init__(
-        self,
-        config: AdapterRequiredConfig,
-        manifest: Manifest,
-        search_package: str,
-    ) -> None:
+class MacroResolvingContext(ConfiguredContext):
+    def __init__(self, config):
         super().__init__(config)
-        self.manifest = manifest
-        self.search_package = search_package
-        self.macro_stack = MacroStack()
 
-    def _get_namespace(self):
-        return MacroNamespace(
-            self.config.project_name,
-            self.search_package,
-            self.macro_stack,
-            None,
+    @contextproperty
+    def var(self) -> ConfiguredVar:
+        return ConfiguredVar(
+            self._ctx, self.config, self.config.project_name
         )
 
-    def get_macros(self) -> Dict[str, Any]:
-        nsp = self._get_namespace()
-        nsp.add_macros(self.manifest.macros.values(), self._ctx)
-        return nsp.get_macro_dict()
 
-    def to_dict(self) -> Dict[str, Any]:
-        dct = super().to_dict()
-        dct.update(self.get_macros())
-        return dct
-
-
-class QueryHeaderContext(ManifestContext):
-    def __init__(
-        self, config: AdapterRequiredConfig, manifest: Manifest
-    ) -> None:
-        super().__init__(config, manifest, config.project_name)
-
-
-def generate_query_header_context(
-    config: AdapterRequiredConfig, manifest: Manifest
-):
-    ctx = QueryHeaderContext(config, manifest)
-    return ctx.to_dict()
-
-
-def generate_schema_yml(
-    config: AdapterRequiredConfig, project_name: str
+def generate_schema_yml_context(
+        config: AdapterRequiredConfig, project_name: str, schema_yaml_vars: SchemaYamlVars = None
 ) -> Dict[str, Any]:
-    ctx = SchemaYamlContext(config, project_name)
+    ctx = SchemaYamlContext(config, project_name, schema_yaml_vars)
+    return ctx.to_dict()
+
+
+def generate_macro_context(
+    config: AdapterRequiredConfig,
+) -> Dict[str, Any]:
+    ctx = MacroResolvingContext(config)
     return ctx.to_dict()

core/dbt/context/context_config.py

@@ -1,11 +1,11 @@
+from abc import abstractmethod
 from copy import deepcopy
 from dataclasses import dataclass
-from typing import List, Iterator, Dict, Any, TypeVar, Union
+from typing import List, Iterator, Dict, Any, TypeVar, Generic
 
-from dbt.config import RuntimeConfig, Project
+from dbt.config import RuntimeConfig, Project, IsFQNResource
 from dbt.contracts.graph.model_config import BaseConfig, get_config_for
 from dbt.exceptions import InternalException
-from dbt.legacy_config_updater import ConfigUpdater, IsFQNResource
 from dbt.node_types import NodeType
 from dbt.utils import fqn_search
 
@@ -17,84 +17,70 @@ class ModelParts(IsFQNResource):
     package_name: str
 
 
-class LegacyContextConfig:
-    def __init__(
-        self,
-        active_project: RuntimeConfig,
-        own_project: Project,
-        fqn: List[str],
-        node_type: NodeType,
-    ):
-        self._config = None
-        self.active_project: RuntimeConfig = active_project
-        self.own_project: Project = own_project
+T = TypeVar('T')  # any old type
+C = TypeVar('C', bound=BaseConfig)
 
-        self.model = ModelParts(
-            fqn=fqn,
-            resource_type=node_type,
-            package_name=self.own_project.project_name,
-        )
 
-        self.updater = ConfigUpdater(active_project.credentials.type)
+class ConfigSource:
+    def __init__(self, project):
+        self.project = project
 
-        # the config options defined within the model
-        self.in_model_config: Dict[str, Any] = {}
+    def get_config_dict(self, resource_type: NodeType):
+        ...
 
-    def get_default(self) -> Dict[str, Any]:
-        defaults = {"enabled": True, "materialized": "view"}
 
-        if self.model.resource_type == NodeType.Seed:
-            defaults['materialized'] = 'seed'
-        elif self.model.resource_type == NodeType.Snapshot:
-            defaults['materialized'] = 'snapshot'
+class UnrenderedConfig(ConfigSource):
+    def __init__(self, project: Project):
+        self.project = project
 
-        if self.model.resource_type == NodeType.Test:
-            defaults['severity'] = 'ERROR'
-
-        return defaults
-
-    def build_config_dict(self, base: bool = False) -> Dict[str, Any]:
-        defaults = self.get_default()
-        active_config = self.load_config_from_active_project()
-
-        if self.active_project.project_name == self.own_project.project_name:
-            cfg = self.updater.merge(
-                defaults, active_config, self.in_model_config
-            )
+    def get_config_dict(self, resource_type: NodeType) -> Dict[str, Any]:
+        unrendered = self.project.unrendered.project_dict
+        if resource_type == NodeType.Seed:
+            model_configs = unrendered.get('seeds')
+        elif resource_type == NodeType.Snapshot:
+            model_configs = unrendered.get('snapshots')
+        elif resource_type == NodeType.Source:
+            model_configs = unrendered.get('sources')
+        elif resource_type == NodeType.Test:
+            model_configs = unrendered.get('tests')
         else:
-            own_config = self.load_config_from_own_project()
+            model_configs = unrendered.get('models')
 
-            cfg = self.updater.merge(
-                defaults, own_config, self.in_model_config, active_config
-            )
-
-        return cfg
-
-    def _translate_adapter_aliases(self, config: Dict[str, Any]):
-        return self.active_project.credentials.translate_aliases(config)
-
-    def update_in_model_config(self, config: Dict[str, Any]) -> None:
-        config = self._translate_adapter_aliases(config)
-        self.updater.update_into(self.in_model_config, config)
-
-    def load_config_from_own_project(self) -> Dict[str, Any]:
-        return self.updater.get_project_config(self.model, self.own_project)
-
-    def load_config_from_active_project(self) -> Dict[str, Any]:
-        return self.updater.get_project_config(self.model, self.active_project)
+        if model_configs is None:
+            return {}
+        else:
+            return model_configs
 
 
-T = TypeVar('T', bound=BaseConfig)
+class RenderedConfig(ConfigSource):
+    def __init__(self, project: Project):
+        self.project = project
+
+    def get_config_dict(self, resource_type: NodeType) -> Dict[str, Any]:
+        if resource_type == NodeType.Seed:
+            model_configs = self.project.seeds
+        elif resource_type == NodeType.Snapshot:
+            model_configs = self.project.snapshots
+        elif resource_type == NodeType.Source:
+            model_configs = self.project.sources
+        elif resource_type == NodeType.Test:
+            model_configs = self.project.tests
+        else:
+            model_configs = self.project.models
+        return model_configs
 
 
-class ContextConfigGenerator:
+class BaseContextConfigGenerator(Generic[T]):
     def __init__(self, active_project: RuntimeConfig):
-        self.active_project = active_project
+        self._active_project = active_project
+
+    def get_config_source(self, project: Project) -> ConfigSource:
+        return RenderedConfig(project)
 
     def get_node_project(self, project_name: str):
-        if project_name == self.active_project.project_name:
-            return self.active_project
-        dependencies = self.active_project.load_dependencies()
+        if project_name == self._active_project.project_name:
+            return self._active_project
+        dependencies = self._active_project.load_dependencies()
         if project_name not in dependencies:
             raise InternalException(
                 f'Project name {project_name} not found in dependencies '
@@ -102,68 +88,172 @@ class ContextConfigGenerator:
             )
         return dependencies[project_name]
 
-    def project_configs(
+    def _project_configs(
         self, project: Project, fqn: List[str], resource_type: NodeType
     ) -> Iterator[Dict[str, Any]]:
-        if resource_type == NodeType.Seed:
-            model_configs = project.seeds
-        elif resource_type == NodeType.Snapshot:
-            model_configs = project.snapshots
-        elif resource_type == NodeType.Source:
-            model_configs = project.sources
-        else:
-            model_configs = project.models
+        src = self.get_config_source(project)
+        model_configs = src.get_config_dict(resource_type)
         for level_config in fqn_search(model_configs, fqn):
             result = {}
             for key, value in level_config.items():
                 if key.startswith('+'):
-                    result[key[1:]] = deepcopy(value)
+                    result[key[1:].strip()] = deepcopy(value)
                 elif not isinstance(value, dict):
                     result[key] = deepcopy(value)
 
             yield result
 
-    def active_project_configs(
+    def _active_project_configs(
         self, fqn: List[str], resource_type: NodeType
     ) -> Iterator[Dict[str, Any]]:
-        return self.project_configs(self.active_project, fqn, resource_type)
+        return self._project_configs(self._active_project, fqn, resource_type)
 
+    @abstractmethod
     def _update_from_config(
         self, result: T, partial: Dict[str, Any], validate: bool = False
     ) -> T:
-        translated = self.active_project.credentials.translate_aliases(partial)
-        return result.update_from(
-            translated,
-            self.active_project.credentials.type,
-            validate=validate
-        )
+        ...
+
+    @abstractmethod
+    def initial_result(self, resource_type: NodeType, base: bool) -> T:
+        ...
 
     def calculate_node_config(
         self,
-        config_calls: List[Dict[str, Any]],
+        config_call_dict: Dict[str, Any],
         fqn: List[str],
         resource_type: NodeType,
         project_name: str,
         base: bool,
+        patch_config_dict: Dict[str, Any] = None
     ) -> BaseConfig:
         own_config = self.get_node_project(project_name)
+
+        result = self.initial_result(resource_type=resource_type, base=base)
+
+        project_configs = self._project_configs(own_config, fqn, resource_type)
+        for fqn_config in project_configs:
+            result = self._update_from_config(result, fqn_config)
+
+        # When schema files patch config, it has lower precedence than
+        # config in the models (config_call_dict), so we add the patch_config_dict
+        # before the config_call_dict
+        if patch_config_dict:
+            result = self._update_from_config(result, patch_config_dict)
+
+        # config_calls are created in the 'experimental' model parser and
+        # the ParseConfigObject (via add_config_call)
+        result = self._update_from_config(result, config_call_dict)
+
+        if own_config.project_name != self._active_project.project_name:
+            for fqn_config in self._active_project_configs(fqn, resource_type):
+                result = self._update_from_config(result, fqn_config)
+
+        # this is mostly impactful in the snapshot config case
+        return result
+
+    @abstractmethod
+    def calculate_node_config_dict(
+        self,
+        config_call_dict: Dict[str, Any],
+        fqn: List[str],
+        resource_type: NodeType,
+        project_name: str,
+        base: bool,
+        patch_config_dict: Dict[str, Any],
+    ) -> Dict[str, Any]:
+        ...
+
+
+class ContextConfigGenerator(BaseContextConfigGenerator[C]):
+    def __init__(self, active_project: RuntimeConfig):
+        self._active_project = active_project
+
+    def get_config_source(self, project: Project) -> ConfigSource:
+        return RenderedConfig(project)
+
+    def initial_result(self, resource_type: NodeType, base: bool) -> C:
         # defaults, own_config, config calls, active_config (if != own_config)
         config_cls = get_config_for(resource_type, base=base)
         # Calculate the defaults. We don't want to validate the defaults,
         # because it might be invalid in the case of required config members
         # (such as on snapshots!)
-        result = config_cls.from_dict({}, validate=False)
-        for fqn_config in self.project_configs(own_config, fqn, resource_type):
-            result = self._update_from_config(result, fqn_config)
-        for config_call in config_calls:
-            result = self._update_from_config(result, config_call)
+        result = config_cls.from_dict({})
+        return result
 
-        if own_config.project_name != self.active_project.project_name:
-            for fqn_config in self.active_project_configs(fqn, resource_type):
-                result = self._update_from_config(result, fqn_config)
+    def _update_from_config(
+        self, result: C, partial: Dict[str, Any], validate: bool = False
+    ) -> C:
+        translated = self._active_project.credentials.translate_aliases(
+            partial
+        )
+        return result.update_from(
+            translated,
+            self._active_project.credentials.type,
+            validate=validate
+        )
 
-        # this is mostly impactful in the snapshot config case
-        return result.finalize_and_validate()
+    def calculate_node_config_dict(
+        self,
+        config_call_dict: Dict[str, Any],
+        fqn: List[str],
+        resource_type: NodeType,
+        project_name: str,
+        base: bool,
+        patch_config_dict: dict = None
+    ) -> Dict[str, Any]:
+        config = self.calculate_node_config(
+            config_call_dict=config_call_dict,
+            fqn=fqn,
+            resource_type=resource_type,
+            project_name=project_name,
+            base=base,
+            patch_config_dict=patch_config_dict
+        )
+        finalized = config.finalize_and_validate()
+        return finalized.to_dict(omit_none=True)
+
+
+class UnrenderedConfigGenerator(BaseContextConfigGenerator[Dict[str, Any]]):
+    def get_config_source(self, project: Project) -> ConfigSource:
+        return UnrenderedConfig(project)
+
+    def calculate_node_config_dict(
+        self,
+        config_call_dict: Dict[str, Any],
+        fqn: List[str],
+        resource_type: NodeType,
+        project_name: str,
+        base: bool,
+        patch_config_dict: dict = None
+    ) -> Dict[str, Any]:
+        return self.calculate_node_config(
+            config_call_dict=config_call_dict,
+            fqn=fqn,
+            resource_type=resource_type,
+            project_name=project_name,
+            base=base,
+            patch_config_dict=patch_config_dict
+        )
+
+    def initial_result(
+        self,
+        resource_type: NodeType,
+        base: bool
+    ) -> Dict[str, Any]:
+        return {}
+
+    def _update_from_config(
+        self,
+        result: Dict[str, Any],
+        partial: Dict[str, Any],
+        validate: bool = False,
+    ) -> Dict[str, Any]:
+        translated = self._active_project.credentials.translate_aliases(
+            partial
+        )
+        result.update(translated)
+        return result
 
 
 class ContextConfig:
@@ -174,23 +264,50 @@ class ContextConfig:
         resource_type: NodeType,
         project_name: str,
     ) -> None:
-        self.config_calls: List[Dict[str, Any]] = []
-        self.cfg_source = ContextConfigGenerator(active_project)
-        self.fqn = fqn
-        self.resource_type = resource_type
-        self.project_name = project_name
+        self._config_call_dict: Dict[str, Any] = {}
+        self._active_project = active_project
+        self._fqn = fqn
+        self._resource_type = resource_type
+        self._project_name = project_name
 
-    def update_in_model_config(self, opts: Dict[str, Any]) -> None:
-        self.config_calls.append(opts)
+    def add_config_call(self, opts: Dict[str, Any]) -> None:
+        dct = self._config_call_dict
+        self._add_config_call(dct, opts)
 
-    def build_config_dict(self, base: bool = False) -> Dict[str, Any]:
-        return self.cfg_source.calculate_node_config(
-            config_calls=self.config_calls,
-            fqn=self.fqn,
-            resource_type=self.resource_type,
-            project_name=self.project_name,
+    @classmethod
+    def _add_config_call(cls, config_call_dict, opts: Dict[str, Any]) -> None:
+        for k, v in opts.items():
+            # MergeBehavior for post-hook and pre-hook is to collect all
+            # values, instead of overwriting
+            if k in BaseConfig.mergebehavior['append']:
+                if not isinstance(v, list):
+                    v = [v]
+            if k in BaseConfig.mergebehavior['update'] and not isinstance(v, dict):
+                raise InternalException(f'expected dict, got {v}')
+            if k in config_call_dict and isinstance(config_call_dict[k], list):
+                config_call_dict[k].extend(v)
+            elif k in config_call_dict and isinstance(config_call_dict[k], dict):
+                config_call_dict[k].update(v)
+            else:
+                config_call_dict[k] = v
+
+    def build_config_dict(
+        self,
+        base: bool = False,
+        *,
+        rendered: bool = True,
+        patch_config_dict: dict = None
+    ) -> Dict[str, Any]:
+        if rendered:
+            src = ContextConfigGenerator(self._active_project)
+        else:
+            src = UnrenderedConfigGenerator(self._active_project)
+
+        return src.calculate_node_config_dict(
+            config_call_dict=self._config_call_dict,
+            fqn=self._fqn,
+            resource_type=self._resource_type,
+            project_name=self._project_name,
             base=base,
-        ).to_dict()
-
-
-ContextConfigType = Union[LegacyContextConfig, ContextConfig]
+            patch_config_dict=patch_config_dict
+        )

core/dbt/context/docs.py

@@ -23,7 +23,7 @@ class DocsRuntimeContext(SchemaYamlContext):
         manifest: Manifest,
         current_project: str,
     ) -> None:
-        super().__init__(config, current_project)
+        super().__init__(config, current_project, None)
         self.node = node
         self.manifest = manifest
 
@@ -57,24 +57,30 @@ class DocsRuntimeContext(SchemaYamlContext):
         else:
             doc_invalid_args(self.node, args)
 
+        # ParsedDocumentation
         target_doc = self.manifest.resolve_doc(
             doc_name,
             doc_package_name,
             self._project_name,
             self.node.package_name,
         )
-
-        if target_doc is None:
+        if target_doc:
+            file_id = target_doc.file_id
+            if file_id in self.manifest.files:
+                source_file = self.manifest.files[file_id]
+                source_file.add_node(self.node.unique_id)
+        else:
             doc_target_not_found(self.node, doc_name, doc_package_name)
 
         return target_doc.block_contents
 
 
-def generate_runtime_docs(
+def generate_runtime_docs_context(
     config: RuntimeConfig,
     target: Any,
     manifest: Manifest,
     current_project: str,
 ) -> Dict[str, Any]:
     ctx = DocsRuntimeContext(config, target, manifest, current_project)
+    # This is not a Mashumaro to_dict call
     return ctx.to_dict()

core/dbt/context/macro_resolver.py

@@ -0,0 +1,199 @@
+from typing import (
+    Dict, MutableMapping, Optional
+)
+from dbt.contracts.graph.parsed import ParsedMacro
+from dbt.exceptions import raise_duplicate_macro_name, raise_compiler_error
+from dbt.include.global_project import PROJECT_NAME as GLOBAL_PROJECT_NAME
+from dbt.clients.jinja import MacroGenerator
+
+MacroNamespace = Dict[str, ParsedMacro]
+
+
+# This class builds the MacroResolver by adding macros
+# to various categories for finding macros in the right order,
+# so that higher precedence macros are found first.
+# This functionality is also provided by the MacroNamespace,
+# but the intention is to eventually replace that class.
+# This enables us to get the macro unique_id without
+# processing every macro in the project.
+# Note: the root project macros override everything in the
+# dbt internal projects. External projects (dependencies) will
+# use their own macros first, then pull from the root project
+# followed by dbt internal projects.
+class MacroResolver:
+    def __init__(
+        self,
+        macros: MutableMapping[str, ParsedMacro],
+        root_project_name: str,
+        internal_package_names,
+    ) -> None:
+        self.root_project_name = root_project_name
+        self.macros = macros
+        # internal packages comes from get_adapter_package_names
+        self.internal_package_names = internal_package_names
+
+        # To be filled in from macros.
+        self.internal_packages: Dict[str, MacroNamespace] = {}
+        self.packages: Dict[str, MacroNamespace] = {}
+        self.root_package_macros: MacroNamespace = {}
+
+        # add the macros to internal_packages, packages, and root packages
+        self.add_macros()
+        self._build_internal_packages_namespace()
+        self._build_macros_by_name()
+
+    def _build_internal_packages_namespace(self):
+        # Iterate in reverse-order and overwrite: the packages that are first
+        # in the list are the ones we want to "win".
+        self.internal_packages_namespace: MacroNamespace = {}
+        for pkg in reversed(self.internal_package_names):
+            if pkg in self.internal_packages:
+                # Turn the internal packages into a flat namespace
+                self.internal_packages_namespace.update(
+                    self.internal_packages[pkg])
+
+    # search order:
+    # local_namespace (package of particular node), not including
+    #    the internal packages or the root package
+    #    This means that within an extra package, it uses its own macros
+    # root package namespace
+    # non-internal packages (that aren't local or root)
+    # dbt internal packages
+    def _build_macros_by_name(self):
+        macros_by_name = {}
+
+        # all internal packages (already in the right order)
+        for macro in self.internal_packages_namespace.values():
+            macros_by_name[macro.name] = macro
+
+        # non-internal packages
+        for fnamespace in self.packages.values():
+            for macro in fnamespace.values():
+                macros_by_name[macro.name] = macro
+
+        # root package macros
+        for macro in self.root_package_macros.values():
+            macros_by_name[macro.name] = macro
+
+        self.macros_by_name = macros_by_name
+
+    def _add_macro_to(
+        self,
+        package_namespaces: Dict[str, MacroNamespace],
+        macro: ParsedMacro,
+    ):
+        if macro.package_name in package_namespaces:
+            namespace = package_namespaces[macro.package_name]
+        else:
+            namespace = {}
+            package_namespaces[macro.package_name] = namespace
+
+        if macro.name in namespace:
+            raise_duplicate_macro_name(
+                macro, macro, macro.package_name
+            )
+        package_namespaces[macro.package_name][macro.name] = macro
+
+    def add_macro(self, macro: ParsedMacro):
+        macro_name: str = macro.name
+
+        # internal macros (from plugins) will be processed separately from
+        # project macros, so store them in a different place
+        if macro.package_name in self.internal_package_names:
+            self._add_macro_to(self.internal_packages, macro)
+        else:
+            # if it's not an internal package
+            self._add_macro_to(self.packages, macro)
+            # add to root_package_macros if it's in the root package
+            if macro.package_name == self.root_project_name:
+                self.root_package_macros[macro_name] = macro
+
+    def add_macros(self):
+        for macro in self.macros.values():
+            self.add_macro(macro)
+
+    def get_macro(self, local_package, macro_name):
+        local_package_macros = {}
+        if (local_package not in self.internal_package_names and
+                local_package in self.packages):
+            local_package_macros = self.packages[local_package]
+        # First: search the local packages for this macro
+        if macro_name in local_package_macros:
+            return local_package_macros[macro_name]
+        # Now look up in the standard search order
+        if macro_name in self.macros_by_name:
+            return self.macros_by_name[macro_name]
+        return None
+
+    def get_macro_id(self, local_package, macro_name):
+        macro = self.get_macro(local_package, macro_name)
+        if macro is None:
+            return None
+        else:
+            return macro.unique_id
+
+
+# Currently this is just used by test processing in the schema
+# parser (in connection with the MacroResolver). Future work
+# will extend the use of these classes to other parsing areas.
+# One of the features of this class compared to the MacroNamespace
+# is that you can limit the number of macros provided to the
+# context dictionary in the 'to_dict' manifest method.
+class TestMacroNamespace:
+    def __init__(
+        self, macro_resolver, ctx, node, thread_ctx, depends_on_macros
+    ):
+        self.macro_resolver = macro_resolver
+        self.ctx = ctx
+        self.node = node  # can be none
+        self.thread_ctx = thread_ctx
+        self.local_namespace = {}
+        self.project_namespace = {}
+        if depends_on_macros:
+            dep_macros = []
+            self.recursively_get_depends_on_macros(depends_on_macros, dep_macros)
+            for macro_unique_id in dep_macros:
+                if macro_unique_id in self.macro_resolver.macros:
+                    # Split up the macro unique_id to get the project_name
+                    (_, project_name, macro_name) = macro_unique_id.split('.')
+                    # Save the plain macro_name in the local_namespace
+                    macro = self.macro_resolver.macros[macro_unique_id]
+                    macro_gen = MacroGenerator(
+                        macro, self.ctx, self.node, self.thread_ctx,
+                    )
+                    self.local_namespace[macro_name] = macro_gen
+                    # We also need the two part macro name
+                    if project_name not in self.project_namespace:
+                        self.project_namespace[project_name] = {}
+                    self.project_namespace[project_name][macro_name] = macro_gen
+
+    def recursively_get_depends_on_macros(self, depends_on_macros, dep_macros):
+        for macro_unique_id in depends_on_macros:
+            if macro_unique_id in dep_macros:
+                continue
+            dep_macros.append(macro_unique_id)
+            if macro_unique_id in self.macro_resolver.macros:
+                macro = self.macro_resolver.macros[macro_unique_id]
+                if macro.depends_on.macros:
+                    self.recursively_get_depends_on_macros(macro.depends_on.macros, dep_macros)
+
+    def get_from_package(
+        self, package_name: Optional[str], name: str
+    ) -> Optional[MacroGenerator]:
+        macro = None
+        if package_name is None:
+            macro = self.macro_resolver.macros_by_name.get(name)
+        elif package_name == GLOBAL_PROJECT_NAME:
+            macro = self.macro_resolver.internal_packages_namespace.get(name)
+        elif package_name in self.macro_resolver.packages:
+            macro = self.macro_resolver.packages[package_name].get(name)
+        else:
+            raise_compiler_error(
+                f"Could not find package '{package_name}'"
+            )
+        if not macro:
+            return None
+        macro_func = MacroGenerator(
+            macro, self.ctx, self.node, self.thread_ctx
+        )
+        return macro_func

core/dbt/context/macros.py

@@ -0,0 +1,182 @@
+from typing import (
+    Any, Dict, Iterable, Union, Optional, List, Iterator, Mapping, Set
+)
+
+from dbt.clients.jinja import MacroGenerator, MacroStack
+from dbt.contracts.graph.parsed import ParsedMacro
+from dbt.include.global_project import PROJECT_NAME as GLOBAL_PROJECT_NAME
+from dbt.exceptions import (
+    raise_duplicate_macro_name, raise_compiler_error
+)
+
+
+FlatNamespace = Dict[str, MacroGenerator]
+NamespaceMember = Union[FlatNamespace, MacroGenerator]
+FullNamespace = Dict[str, NamespaceMember]
+
+
+# The point of this class is to collect the various macros
+# and provide the ability to flatten them into the ManifestContexts
+# that are created for jinja, so that macro calls can be resolved.
+# Creates special iterators and _keys methods to flatten the lists.
+# When this class is created it has a static 'local_namespace' which
+# depends on the package of the node, so it only works for one
+# particular local package at a time for "flattening" into a context.
+# 'get_by_package' should work for any macro.
+class MacroNamespace(Mapping):
+    def __init__(
+        self,
+        global_namespace: FlatNamespace,  # root package macros
+        local_namespace: FlatNamespace,   # packages for *this* node
+        global_project_namespace: FlatNamespace,  # internal packages
+        packages: Dict[str, FlatNamespace],  # non-internal packages
+    ):
+        self.global_namespace: FlatNamespace = global_namespace
+        self.local_namespace: FlatNamespace = local_namespace
+        self.packages: Dict[str, FlatNamespace] = packages
+        self.global_project_namespace: FlatNamespace = global_project_namespace
+
+    def _search_order(self) -> Iterable[Union[FullNamespace, FlatNamespace]]:
+        yield self.local_namespace   # local package
+        yield self.global_namespace  # root package
+        yield self.packages          # non-internal packages
+        yield {
+            GLOBAL_PROJECT_NAME: self.global_project_namespace,  # dbt
+        }
+        yield self.global_project_namespace  # other internal project besides dbt
+
+    # provides special keys method for MacroNamespace iterator
+    # returns keys from local_namespace, global_namespace, packages,
+    # global_project_namespace
+    def _keys(self) -> Set[str]:
+        keys: Set[str] = set()
+        for search in self._search_order():
+            keys.update(search)
+        return keys
+
+    # special iterator using special keys
+    def __iter__(self) -> Iterator[str]:
+        for key in self._keys():
+            yield key
+
+    def __len__(self):
+        return len(self._keys())
+
+    def __getitem__(self, key: str) -> NamespaceMember:
+        for dct in self._search_order():
+            if key in dct:
+                return dct[key]
+        raise KeyError(key)
+
+    def get_from_package(
+        self, package_name: Optional[str], name: str
+    ) -> Optional[MacroGenerator]:
+        pkg: FlatNamespace
+        if package_name is None:
+            return self.get(name)
+        elif package_name == GLOBAL_PROJECT_NAME:
+            return self.global_project_namespace.get(name)
+        elif package_name in self.packages:
+            return self.packages[package_name].get(name)
+        else:
+            raise_compiler_error(
+                f"Could not find package '{package_name}'"
+            )
+
+
+# This class builds the MacroNamespace by adding macros to
+# internal_packages or packages, and locals/globals.
+# Call 'build_namespace' to return a MacroNamespace.
+# This is used by ManifestContext (and subclasses)
+class MacroNamespaceBuilder:
+    def __init__(
+        self,
+        root_package: str,
+        search_package: str,
+        thread_ctx: MacroStack,
+        internal_packages: List[str],
+        node: Optional[Any] = None,
+    ) -> None:
+        self.root_package = root_package
+        self.search_package = search_package
+        # internal packages comes from get_adapter_package_names
+        self.internal_package_names = set(internal_packages)
+        self.internal_package_names_order = internal_packages
+        # macro_func is added here if in root package, since
+        # the root package acts as a "global" namespace, overriding
+        # everything else except local external package macro calls
+        self.globals: FlatNamespace = {}
+        # macro_func is added here if it's the package for this node
+        self.locals: FlatNamespace = {}
+        # Create a dictionary of [package name][macro name] =
+        #     MacroGenerator object which acts like a function
+        self.internal_packages: Dict[str, FlatNamespace] = {}
+        self.packages: Dict[str, FlatNamespace] = {}
+        self.thread_ctx = thread_ctx
+        self.node = node
+
+    def _add_macro_to(
+        self,
+        hierarchy: Dict[str, FlatNamespace],
+        macro: ParsedMacro,
+        macro_func: MacroGenerator,
+    ):
+        if macro.package_name in hierarchy:
+            namespace = hierarchy[macro.package_name]
+        else:
+            namespace = {}
+            hierarchy[macro.package_name] = namespace
+
+        if macro.name in namespace:
+            raise_duplicate_macro_name(
+                macro_func.macro, macro, macro.package_name
+            )
+        hierarchy[macro.package_name][macro.name] = macro_func
+
+    def add_macro(self, macro: ParsedMacro, ctx: Dict[str, Any]):
+        macro_name: str = macro.name
+
+        # MacroGenerator is in clients/jinja.py
+        # a MacroGenerator object is a callable object that will
+        # execute the MacroGenerator.__call__ function
+        macro_func: MacroGenerator = MacroGenerator(
+            macro, ctx, self.node, self.thread_ctx
+        )
+
+        # internal macros (from plugins) will be processed separately from
+        # project macros, so store them in a different place
+        if macro.package_name in self.internal_package_names:
+            self._add_macro_to(self.internal_packages, macro, macro_func)
+        else:
+            # if it's not an internal package
+            self._add_macro_to(self.packages, macro, macro_func)
+            # add to locals if it's the package this node is in
+            if macro.package_name == self.search_package:
+                self.locals[macro_name] = macro_func
+            # add to globals if it's in the root package
+            elif macro.package_name == self.root_package:
+                self.globals[macro_name] = macro_func
+
+    def add_macros(self, macros: Iterable[ParsedMacro], ctx: Dict[str, Any]):
+        for macro in macros:
+            self.add_macro(macro, ctx)
+
+    def build_namespace(
+        self, macros: Iterable[ParsedMacro], ctx: Dict[str, Any]
+    ) -> MacroNamespace:
+        self.add_macros(macros, ctx)
+
+        # Iterate in reverse-order and overwrite: the packages that are first
+        # in the list are the ones we want to "win".
+        global_project_namespace: FlatNamespace = {}
+        for pkg in reversed(self.internal_package_names_order):
+            if pkg in self.internal_packages:
+                # add the macros pointed to by this package name
+                global_project_namespace.update(self.internal_packages[pkg])
+
+        return MacroNamespace(
+            global_namespace=self.globals,  # root package macros
+            local_namespace=self.locals,  # packages for *this* node
+            global_project_namespace=global_project_namespace,  # internal packages
+            packages=self.packages,  # non internal_packages
+        )

core/dbt/context/manifest.py

@@ -0,0 +1,83 @@
+from typing import List
+
+from dbt.clients.jinja import MacroStack
+from dbt.contracts.connection import AdapterRequiredConfig
+from dbt.contracts.graph.manifest import Manifest
+from dbt.context.macro_resolver import TestMacroNamespace
+
+
+from .configured import ConfiguredContext
+from .macros import MacroNamespaceBuilder
+
+
+class ManifestContext(ConfiguredContext):
+    """The Macro context has everything in the target context, plus the macros
+    in the manifest.
+
+    The given macros can override any previous context values, which will be
+    available as if they were accessed relative to the package name.
+    """
+    # subclasses are QueryHeaderContext and ProviderContext
+    def __init__(
+        self,
+        config: AdapterRequiredConfig,
+        manifest: Manifest,
+        search_package: str,
+    ) -> None:
+        super().__init__(config)
+        self.manifest = manifest
+        # this is the package of the node for which this context was built
+        self.search_package = search_package
+        self.macro_stack = MacroStack()
+        # This namespace is used by the BaseDatabaseWrapper in jinja rendering.
+        # The namespace is passed to it when it's constructed. It expects
+        # to be able to do: namespace.get_from_package(..)
+        self.namespace = self._build_namespace()
+
+    def _build_namespace(self):
+        # this takes all the macros in the manifest and adds them
+        # to the MacroNamespaceBuilder stored in self.namespace
+        builder = self._get_namespace_builder()
+        return builder.build_namespace(
+            self.manifest.macros.values(), self._ctx
+        )
+
+    def _get_namespace_builder(self) -> MacroNamespaceBuilder:
+        # avoid an import loop
+        from dbt.adapters.factory import get_adapter_package_names
+        internal_packages: List[str] = get_adapter_package_names(
+            self.config.credentials.type
+        )
+        return MacroNamespaceBuilder(
+            self.config.project_name,
+            self.search_package,
+            self.macro_stack,
+            internal_packages,
+            None,
+        )
+
+    # This does not use the Mashumaro code
+    def to_dict(self):
+        dct = super().to_dict()
+        # This moves all of the macros in the 'namespace' into top level
+        # keys in the manifest dictionary
+        if isinstance(self.namespace, TestMacroNamespace):
+            dct.update(self.namespace.local_namespace)
+            dct.update(self.namespace.project_namespace)
+        else:
+            dct.update(self.namespace)
+        return dct
+
+
+class QueryHeaderContext(ManifestContext):
+    def __init__(
+        self, config: AdapterRequiredConfig, manifest: Manifest
+    ) -> None:
+        super().__init__(config, manifest, config.project_name)
+
+
+def generate_query_header_context(
+    config: AdapterRequiredConfig, manifest: Manifest
+):
+    ctx = QueryHeaderContext(config, manifest)
+    return ctx.to_dict()

core/dbt/context/providers.py

@@ -6,29 +6,43 @@ from typing import (
 )
 from typing_extensions import Protocol
 
-
 from dbt.adapters.base.column import Column
-from dbt.adapters.factory import get_adapter
-from dbt.clients import agate_helper
-from dbt.clients.jinja import get_rendered
-from dbt.config import RuntimeConfig, Project
-from dbt.context.base import (
-    contextmember, contextproperty, Var
+from dbt.adapters.factory import (
+    get_adapter, get_adapter_package_names, get_adapter_type_names
+)
+from dbt.clients import agate_helper
+from dbt.clients.jinja import get_rendered, MacroGenerator, MacroStack
+from dbt.config import RuntimeConfig, Project
+from .base import contextmember, contextproperty, Var
+from .configured import FQNLookup
+from .context_config import ContextConfig
+from dbt.logger import SECRET_ENV_PREFIX
+from dbt.context.macro_resolver import MacroResolver, TestMacroNamespace
+from .macros import MacroNamespaceBuilder, MacroNamespace
+from .manifest import ManifestContext
+from dbt.contracts.connection import AdapterResponse
+from dbt.contracts.graph.manifest import (
+    Manifest, Disabled
 )
-from dbt.context.configured import ManifestContext, MacroNamespace, FQNLookup
-from dbt.context.context_config import ContextConfigType
-from dbt.contracts.graph.manifest import Manifest, Disabled
 from dbt.contracts.graph.compiled import (
-    NonSourceNode, CompiledSeedNode, CompiledResource
+    CompiledResource,
+    CompiledSeedNode,
+    ManifestNode,
 )
 from dbt.contracts.graph.parsed import (
-    ParsedMacro, ParsedSourceDefinition, ParsedSeedNode
+    ParsedMacro,
+    ParsedExposure,
+    ParsedMetric,
+    ParsedSeedNode,
+    ParsedSourceDefinition,
 )
 from dbt.exceptions import (
     CompilationException,
+    ParsingException,
     InternalException,
     ValidationException,
     RuntimeException,
+    macro_invalid_dispatch_arg,
     missing_config,
     raise_compiler_error,
     ref_invalid_args,
@@ -36,13 +50,14 @@ from dbt.exceptions import (
     ref_bad_context,
     source_target_not_found,
     wrapped_exports,
+    raise_parsing_error,
+    disallow_secret_env_var,
 )
-from dbt.legacy_config_updater import IsFQNResource
-from dbt.logger import GLOBAL_LOGGER as logger  # noqa
+from dbt.config import IsFQNResource
 from dbt.node_types import NodeType
 
 from dbt.utils import (
-    add_ephemeral_model_prefix, merge, AttrDict, MultiDict
+    merge, AttrDict, MultiDict
 )
 
 import agate
@@ -54,23 +69,23 @@ _MISSING = object()
 # base classes
 class RelationProxy:
     def __init__(self, adapter):
-        self.quoting_config = adapter.config.quoting
-        self.relation_type = adapter.Relation
+        self._quoting_config = adapter.config.quoting
+        self._relation_type = adapter.Relation
 
     def __getattr__(self, key):
-        return getattr(self.relation_type, key)
+        return getattr(self._relation_type, key)
 
     def create_from_source(self, *args, **kwargs):
         # bypass our create when creating from source so as not to mess up
         # the source quoting
-        return self.relation_type.create_from_source(*args, **kwargs)
+        return self._relation_type.create_from_source(*args, **kwargs)
 
     def create(self, *args, **kwargs):
         kwargs['quote_policy'] = merge(
-            self.quoting_config,
+            self._quoting_config,
             kwargs.pop('quote_policy', {})
         )
-        return self.relation_type.create(*args, **kwargs)
+        return self._relation_type.create(*args, **kwargs)
 
 
 class BaseDatabaseWrapper:
@@ -78,22 +93,98 @@ class BaseDatabaseWrapper:
     Wrapper for runtime database interaction. Applies the runtime quote policy
     via a relation proxy.
     """
-    def __init__(self, adapter):
-        self.adapter = adapter
+
+    def __init__(self, adapter, namespace: MacroNamespace):
+        self._adapter = adapter
         self.Relation = RelationProxy(adapter)
+        self._namespace = namespace
 
     def __getattr__(self, name):
         raise NotImplementedError('subclasses need to implement this')
 
     @property
     def config(self):
-        return self.adapter.config
+        return self._adapter.config
 
     def type(self):
-        return self.adapter.type()
+        return self._adapter.type()
 
     def commit(self):
-        return self.adapter.commit_if_has_connection()
+        return self._adapter.commit_if_has_connection()
+
+    def _get_adapter_macro_prefixes(self) -> List[str]:
+        # order matters for dispatch:
+        #  1. current adapter
+        #  2. any parent adapters (dependencies)
+        #  3. 'default'
+        search_prefixes = get_adapter_type_names(self._adapter.type()) + ['default']
+        return search_prefixes
+
+    def dispatch(
+        self,
+        macro_name: str,
+        macro_namespace: Optional[str] = None,
+        packages: Optional[List[str]] = None,  # eventually remove since it's fully deprecated
+    ) -> MacroGenerator:
+        search_packages: List[Optional[str]]
+
+        if '.' in macro_name:
+            suggest_macro_namespace, suggest_macro_name = macro_name.split('.', 1)
+            msg = (
+                f'In adapter.dispatch, got a macro name of "{macro_name}", '
+                f'but "." is not a valid macro name component. Did you mean '
+                f'`adapter.dispatch("{suggest_macro_name}", '
+                f'macro_namespace="{suggest_macro_namespace}")`?'
+            )
+            raise CompilationException(msg)
+
+        if packages is not None:
+            raise macro_invalid_dispatch_arg(macro_name)
+
+        namespace = macro_namespace
+
+        if namespace is None:
+            search_packages = [None]
+        elif isinstance(namespace, str):
+            search_packages = self._adapter.config.get_macro_search_order(namespace)
+            if not search_packages and namespace in self._adapter.config.dependencies:
+                search_packages = [self.config.project_name, namespace]
+        else:
+            # Not a string and not None so must be a list
+            raise CompilationException(
+                f'In adapter.dispatch, got a list macro_namespace argument '
+                f'("{macro_namespace}"), but macro_namespace should be None or a string.'
+            )
+
+        attempts = []
+
+        for package_name in search_packages:
+            for prefix in self._get_adapter_macro_prefixes():
+                search_name = f'{prefix}__{macro_name}'
+                try:
+                    # this uses the namespace from the context
+                    macro = self._namespace.get_from_package(
+                        package_name, search_name
+                    )
+                except CompilationException:
+                    # Only raise CompilationException if macro is not found in
+                    # any package
+                    macro = None
+
+                if package_name is None:
+                    attempts.append(search_name)
+                else:
+                    attempts.append(f'{package_name}.{search_name}')
+
+                if macro is not None:
+                    return macro
+
+        searched = ', '.join(repr(a) for a in attempts)
+        msg = (
+            f"In dispatch: No macro named '{macro_name}' found\n"
+            f"    Searched for: {searched}"
+        )
+        raise CompilationException(msg)
 
 
 class BaseResolver(metaclass=abc.ABCMeta):
@@ -186,13 +277,13 @@ class BaseSourceResolver(BaseResolver):
 
 
 class Config(Protocol):
-    def __init__(self, model, context_config: Optional[ContextConfigType]):
+    def __init__(self, model, context_config: Optional[ContextConfig]):
         ...
 
 
-# `config` implementations
+# Implementation of "config(..)" calls in models
 class ParseConfigObject(Config):
-    def __init__(self, model, context_config: Optional[ContextConfigType]):
+    def __init__(self, model, context_config: Optional[ContextConfig]):
         self.model = model
         self.context_config = context_config
 
@@ -227,7 +318,7 @@ class ParseConfigObject(Config):
             raise RuntimeException(
                 'At parse time, did not receive a context config'
             )
-        self.context_config.update_in_model_config(opts)
+        self.context_config.add_config_call(opts)
         return ''
 
     def set(self, name, value):
@@ -236,7 +327,7 @@ class ParseConfigObject(Config):
     def require(self, name, validator=None):
         return ''
 
-    def get(self, name, validator=None, default=None):
+    def get(self, name, default=None, validator=None):
         return ''
 
     def persist_relation_docs(self) -> bool:
@@ -248,7 +339,7 @@ class ParseConfigObject(Config):
 
 class RuntimeConfigObject(Config):
     def __init__(
-        self, model, context_config: Optional[ContextConfigType] = None
+        self, model, context_config: Optional[ContextConfig] = None
     ):
         self.model = model
         # we never use or get a config, only the parser cares
@@ -280,7 +371,7 @@ class RuntimeConfigObject(Config):
 
         return to_return
 
-    def get(self, name, validator=None, default=None):
+    def get(self, name, default=None, validator=None):
         to_return = self._lookup(name, default)
 
         if validator is not None and default is not None:
@@ -312,14 +403,15 @@ class ParseDatabaseWrapper(BaseDatabaseWrapper):
     """The parser subclass of the database wrapper applies any explicit
     parse-time overrides.
     """
+
     def __getattr__(self, name):
-        override = (name in self.adapter._available_ and
-                    name in self.adapter._parse_replacements_)
+        override = (name in self._adapter._available_ and
+                    name in self._adapter._parse_replacements_)
 
         if override:
-            return self.adapter._parse_replacements_[name]
-        elif name in self.adapter._available_:
-            return getattr(self.adapter, name)
+            return self._adapter._parse_replacements_[name]
+        elif name in self._adapter._available_:
+            return getattr(self._adapter, name)
         else:
             raise AttributeError(
                 "'{}' object has no attribute '{}'".format(
@@ -332,9 +424,10 @@ class RuntimeDatabaseWrapper(BaseDatabaseWrapper):
     """The runtime database wrapper exposes everything the adapter marks
     available.
     """
+
     def __getattr__(self, name):
-        if name in self.adapter._available_:
-            return getattr(self.adapter, name)
+        if name in self._adapter._available_:
+            return getattr(self._adapter, name)
         else:
             raise AttributeError(
                 "'{}' object has no attribute '{}'".format(
@@ -353,7 +446,7 @@ class ParseRefResolver(BaseRefResolver):
         return self.Relation.create_from(self.config, self.model)
 
 
-ResolveRef = Union[Disabled, NonSourceNode]
+ResolveRef = Union[Disabled, ManifestNode]
 
 
 class RuntimeRefResolver(BaseRefResolver):
@@ -377,26 +470,20 @@ class RuntimeRefResolver(BaseRefResolver):
         self.validate(target_model, target_name, target_package)
         return self.create_relation(target_model, target_name)
 
-    def create_ephemeral_relation(
-        self, target_model: NonSourceNode, name: str
-    ) -> RelationProxy:
-        self.model.set_cte(target_model.unique_id, None)
-        return self.Relation.create(
-            type=self.Relation.CTE,
-            identifier=add_ephemeral_model_prefix(name)
-        ).quote(identifier=False)
-
     def create_relation(
-        self, target_model: NonSourceNode, name: str
+        self, target_model: ManifestNode, name: str
     ) -> RelationProxy:
-        if target_model.get_materialization() == 'ephemeral':
-            return self.create_ephemeral_relation(target_model, name)
+        if target_model.is_ephemeral_model:
+            self.model.set_cte(target_model.unique_id, None)
+            return self.Relation.create_ephemeral_from_node(
+                self.config, target_model
+            )
         else:
             return self.Relation.create_from(self.config, target_model)
 
     def validate(
         self,
-        resolved: NonSourceNode,
+        resolved: ManifestNode,
         target_name: str,
         target_package: Optional[str]
     ) -> None:
@@ -408,22 +495,25 @@ class RuntimeRefResolver(BaseRefResolver):
 class OperationRefResolver(RuntimeRefResolver):
     def validate(
         self,
-        resolved: NonSourceNode,
+        resolved: ManifestNode,
         target_name: str,
         target_package: Optional[str],
     ) -> None:
         pass
 
-    def create_ephemeral_relation(
-        self, target_model: NonSourceNode, name: str
+    def create_relation(
+        self, target_model: ManifestNode, name: str
     ) -> RelationProxy:
-        # In operations, we can't ref() ephemeral nodes, because ParsedMacros
-        # do not support set_cte
-        raise_compiler_error(
-            'Operations can not ref() ephemeral nodes, but {} is ephemeral'
-            .format(target_model.name),
-            self.model
-        )
+        if target_model.is_ephemeral_model:
+            # In operations, we can't ref() ephemeral nodes, because
+            # ParsedMacros do not support set_cte
+            raise_compiler_error(
+                'Operations can not ref() ephemeral nodes, but {} is ephemeral'
+                .format(target_model.name),
+                self.model
+            )
+        else:
+            return super().create_relation(target_model, name)
 
 
 # `source` implementations
@@ -460,37 +550,37 @@ class ModelConfiguredVar(Var):
         config: RuntimeConfig,
         node: CompiledResource,
     ) -> None:
-        self.node: CompiledResource
-        self.config: RuntimeConfig = config
+        self._node: CompiledResource
+        self._config: RuntimeConfig = config
         super().__init__(context, config.cli_vars, node=node)
 
     def packages_for_node(self) -> Iterable[Project]:
-        dependencies = self.config.load_dependencies()
-        package_name = self.node.package_name
+        dependencies = self._config.load_dependencies()
+        package_name = self._node.package_name
 
-        if package_name != self.config.project_name:
+        if package_name != self._config.project_name:
             if package_name not in dependencies:
                 # I don't think this is actually reachable
                 raise_compiler_error(
                     f'Node package named {package_name} not found!',
-                    self.node
+                    self._node
                 )
             yield dependencies[package_name]
-        yield self.config
+        yield self._config
 
     def _generate_merged(self) -> Mapping[str, Any]:
         search_node: IsFQNResource
-        if isinstance(self.node, IsFQNResource):
-            search_node = self.node
+        if isinstance(self._node, IsFQNResource):
+            search_node = self._node
         else:
-            search_node = FQNLookup(self.node.package_name)
+            search_node = FQNLookup(self._node.package_name)
 
-        adapter_type = self.config.credentials.type
+        adapter_type = self._config.credentials.type
 
         merged = MultiDict()
         for project in self.packages_for_node():
             merged.add(project.vars.vars_for(search_node, adapter_type))
-        merged.add(self.cli_vars)
+        merged.add(self._cli_vars)
         return merged
 
 
@@ -550,13 +640,14 @@ T = TypeVar('T')
 
 # Base context collection, used for parsing configs.
 class ProviderContext(ManifestContext):
+    # subclasses are MacroContext, ModelContext, TestContext
     def __init__(
         self,
         model,
         config: RuntimeConfig,
         manifest: Manifest,
         provider: Provider,
-        context_config: Optional[ContextConfigType],
+        context_config: Optional[ContextConfig],
     ) -> None:
         if provider is None:
             raise InternalException(
@@ -564,19 +655,28 @@ class ProviderContext(ManifestContext):
             )
         # mypy appeasement - we know it'll be a RuntimeConfig
         self.config: RuntimeConfig
+        self.model: Union[ParsedMacro, ManifestNode] = model
         super().__init__(config, manifest, model.package_name)
         self.sql_results: Dict[str, AttrDict] = {}
-        self.model: Union[ParsedMacro, NonSourceNode] = model
-        self.context_config: Optional[ContextConfigType] = context_config
+        self.context_config: Optional[ContextConfig] = context_config
         self.provider: Provider = provider
         self.adapter = get_adapter(self.config)
-        self.db_wrapper = self.provider.DatabaseWrapper(self.adapter)
+        # The macro namespace is used in creating the DatabaseWrapper
+        self.db_wrapper = self.provider.DatabaseWrapper(
+            self.adapter, self.namespace
+        )
 
-    def _get_namespace(self):
-        return MacroNamespace(
+    # This overrides the method in ManifestContext, and provides
+    # a model, which the ManifestContext builder does not
+    def _get_namespace_builder(self):
+        internal_packages = get_adapter_package_names(
+            self.config.credentials.type
+        )
+        return MacroNamespaceBuilder(
             self.config.project_name,
             self.search_package,
             self.macro_stack,
+            internal_packages,
             self.model,
         )
 
@@ -590,18 +690,33 @@ class ProviderContext(ManifestContext):
 
     @contextmember
     def store_result(
-        self, name: str, status: Any, agate_table: Optional[agate.Table] = None
+        self, name: str,
+        response: Any,
+        agate_table: Optional[agate.Table] = None
     ) -> str:
         if agate_table is None:
             agate_table = agate_helper.empty_table()
 
         self.sql_results[name] = AttrDict({
-            'status': status,
+            'response': response,
             'data': agate_helper.as_matrix(agate_table),
             'table': agate_table
         })
         return ''
 
+    @contextmember
+    def store_raw_result(
+        self,
+        name: str,
+        message=Optional[str],
+        code=Optional[str],
+        rows_affected=Optional[str],
+        agate_table: Optional[agate.Table] = None
+    ) -> str:
+        response = AdapterResponse(
+            _message=message, code=code, rows_affected=rows_affected)
+        return self.store_result(name, response, agate_table)
+
     @contextproperty
     def validation(self):
         def validate_any(*args) -> Callable[[T], None]:
@@ -1019,7 +1134,7 @@ class ProviderContext(ManifestContext):
 
     @contextproperty('model')
     def ctx_model(self) -> Dict[str, Any]:
-        return self.model.to_dict()
+        return self.model.to_dict(omit_none=True)
 
     @contextproperty
     def pre_hooks(self) -> Optional[List[Dict[str, Any]]]:
@@ -1037,6 +1152,51 @@ class ProviderContext(ManifestContext):
     def sql_now(self) -> str:
         return self.adapter.date_function()
 
+    @contextmember
+    def adapter_macro(self, name: str, *args, **kwargs):
+        """This was deprecated in v0.18 in favor of adapter.dispatch
+        """
+        msg = (
+            'The "adapter_macro" macro has been deprecated. Instead, use '
+            'the `adapter.dispatch` method to find a macro and call the '
+            'result.  For more information, see: '
+            'https://docs.getdbt.com/reference/dbt-jinja-functions/dispatch)'
+            ' adapter_macro was called for: {macro_name}'
+            .format(macro_name=name)
+        )
+        raise CompilationException(msg)
+
+    @contextmember
+    def env_var(self, var: str, default: Optional[str] = None) -> str:
+        """The env_var() function. Return the environment variable named 'var'.
+        If there is no such environment variable set, return the default.
+
+        If the default is None, raise an exception for an undefined variable.
+        """
+        return_value = None
+        if var.startswith(SECRET_ENV_PREFIX):
+            disallow_secret_env_var(var)
+        if var in os.environ:
+            return_value = os.environ[var]
+        elif default is not None:
+            return_value = default
+
+        if return_value is not None:
+            # Save the env_var value in the manifest and the var name in the source_file.
+            # If this is compiling, do not save because it's irrelevant to parsing.
+            if self.model and not hasattr(self.model, 'compiled'):
+                self.manifest.env_vars[var] = return_value
+                # hooks come from dbt_project.yml which doesn't have a real file_id
+                if self.model.file_id in self.manifest.files:
+                    source_file = self.manifest.files[self.model.file_id]
+                    # Schema files should never get here
+                    if source_file.parse_file_type != 'schema':
+                        source_file.env_vars.append(var)
+            return return_value
+        else:
+            msg = f"Env var required but not provided: '{var}'"
+            raise_parsing_error(msg)
+
 
 class MacroContext(ProviderContext):
     """Internally, macros can be executed like nodes, with some restrictions:
@@ -1046,6 +1206,7 @@ class MacroContext(ProviderContext):
         - 'schema' does not use any 'model' information
      - they can't be configured with config() directives
     """
+
     def __init__(
         self,
         model: ParsedMacro,
@@ -1064,27 +1225,29 @@ class MacroContext(ProviderContext):
 
 
 class ModelContext(ProviderContext):
-    model: NonSourceNode
+    model: ManifestNode
 
     @contextproperty
     def pre_hooks(self) -> List[Dict[str, Any]]:
-        if isinstance(self.model, ParsedSourceDefinition):
+        if self.model.resource_type in [NodeType.Source, NodeType.Test]:
             return []
         return [
-            h.to_dict() for h in self.model.config.pre_hook
+            h.to_dict(omit_none=True) for h in self.model.config.pre_hook
         ]
 
     @contextproperty
     def post_hooks(self) -> List[Dict[str, Any]]:
-        if isinstance(self.model, ParsedSourceDefinition):
+        if self.model.resource_type in [NodeType.Source, NodeType.Test]:
             return []
         return [
-            h.to_dict() for h in self.model.config.post_hook
+            h.to_dict(omit_none=True) for h in self.model.config.post_hook
         ]
 
     @contextproperty
     def sql(self) -> Optional[str]:
-        return getattr(self.model, 'injected_sql', None)
+        if getattr(self.model, 'extra_ctes_injected', None):
+            return self.model.compiled_sql
+        return None
 
     @contextproperty
     def database(self) -> str:
@@ -1134,31 +1297,25 @@ class ModelContext(ProviderContext):
         return self.db_wrapper.Relation.create_from(self.config, self.model)
 
 
-def generate_parser_model(
-    model: NonSourceNode,
+# This is called by '_context_for', used in 'render_with_context'
+def generate_parser_model_context(
+    model: ManifestNode,
     config: RuntimeConfig,
     manifest: Manifest,
-    context_config: ContextConfigType,
+    context_config: ContextConfig,
 ) -> Dict[str, Any]:
+    # The __init__ method of ModelContext also initializes
+    # a ManifestContext object which creates a MacroNamespaceBuilder
+    # which adds every macro in the Manifest.
     ctx = ModelContext(
         model, config, manifest, ParseProvider(), context_config
     )
+    # The 'to_dict' method in ManifestContext moves all of the macro names
+    # in the macro 'namespace' up to top level keys
     return ctx.to_dict()
 
 
-def generate_parser_macro(
-    macro: ParsedMacro,
-    config: RuntimeConfig,
-    manifest: Manifest,
-    package_name: Optional[str],
-) -> Dict[str, Any]:
-    ctx = MacroContext(
-        macro, config, manifest, ParseProvider(), package_name
-    )
-    return ctx.to_dict()
-
-
-def generate_generate_component_name_macro(
+def generate_generate_name_macro_context(
     macro: ParsedMacro,
     config: RuntimeConfig,
     manifest: Manifest,
@@ -1169,8 +1326,8 @@ def generate_generate_component_name_macro(
     return ctx.to_dict()
 
 
-def generate_runtime_model(
-    model: NonSourceNode,
+def generate_runtime_model_context(
+    model: ManifestNode,
     config: RuntimeConfig,
     manifest: Manifest,
 ) -> Dict[str, Any]:
@@ -1180,7 +1337,7 @@ def generate_runtime_model(
     return ctx.to_dict()
 
 
-def generate_runtime_macro(
+def generate_runtime_macro_context(
     macro: ParsedMacro,
     config: RuntimeConfig,
     manifest: Manifest,
@@ -1190,3 +1347,177 @@ def generate_runtime_macro(
         macro, config, manifest, OperationProvider(), package_name
     )
     return ctx.to_dict()
+
+
+class ExposureRefResolver(BaseResolver):
+    def __call__(self, *args) -> str:
+        if len(args) not in (1, 2):
+            ref_invalid_args(self.model, args)
+        self.model.refs.append(list(args))
+        return ''
+
+
+class ExposureSourceResolver(BaseResolver):
+    def __call__(self, *args) -> str:
+        if len(args) != 2:
+            raise_compiler_error(
+                f"source() takes exactly two arguments ({len(args)} given)",
+                self.model
+            )
+        self.model.sources.append(list(args))
+        return ''
+
+
+def generate_parse_exposure(
+    exposure: ParsedExposure,
+    config: RuntimeConfig,
+    manifest: Manifest,
+    package_name: str,
+) -> Dict[str, Any]:
+    project = config.load_dependencies()[package_name]
+    return {
+        'ref': ExposureRefResolver(
+            None,
+            exposure,
+            project,
+            manifest,
+        ),
+        'source': ExposureSourceResolver(
+            None,
+            exposure,
+            project,
+            manifest,
+        )
+    }
+
+
+class MetricRefResolver(BaseResolver):
+    def __call__(self, *args) -> str:
+        package = None
+        if len(args) == 1:
+            name = args[0]
+        elif len(args) == 2:
+            package, name = args
+        else:
+            ref_invalid_args(self.model, args)
+        self.validate_args(name, package)
+        self.model.refs.append(list(args))
+        return ''
+
+    def validate_args(self, name, package):
+        if not isinstance(name, str):
+            raise ParsingException(
+                f'In a metrics section in {self.model.original_file_path} '
+                f'the name argument to ref() must be a string'
+            )
+
+
+def generate_parse_metrics(
+    metric: ParsedMetric,
+    config: RuntimeConfig,
+    manifest: Manifest,
+    package_name: str,
+) -> Dict[str, Any]:
+    project = config.load_dependencies()[package_name]
+    return {
+        'ref': MetricRefResolver(
+            None,
+            metric,
+            project,
+            manifest,
+        ),
+    }
+
+
+# This class is currently used by the schema parser in order
+# to limit the number of macros in the context by using
+# the TestMacroNamespace
+class TestContext(ProviderContext):
+    def __init__(
+        self,
+        model,
+        config: RuntimeConfig,
+        manifest: Manifest,
+        provider: Provider,
+        context_config: Optional[ContextConfig],
+        macro_resolver: MacroResolver,
+    ) -> None:
+        # this must be before super init so that macro_resolver exists for
+        # build_namespace
+        self.macro_resolver = macro_resolver
+        self.thread_ctx = MacroStack()
+        super().__init__(model, config, manifest, provider, context_config)
+        self._build_test_namespace()
+        # We need to rebuild this because it's already been built by
+        # the ProviderContext with the wrong namespace.
+        self.db_wrapper = self.provider.DatabaseWrapper(
+            self.adapter, self.namespace
+        )
+
+    def _build_namespace(self):
+        return {}
+
+    # this overrides _build_namespace in ManifestContext which provides a
+    # complete namespace of all macros to only specify macros in the depends_on
+    # This only provides a namespace with macros in the test node
+    # 'depends_on.macros' by using the TestMacroNamespace
+    def _build_test_namespace(self):
+        depends_on_macros = []
+        # all generic tests use a macro named 'get_where_subquery' to wrap 'model' arg
+        # see generic_test_builders.build_model_str
+        get_where_subquery = self.macro_resolver.macros_by_name.get('get_where_subquery')
+        if get_where_subquery:
+            depends_on_macros.append(get_where_subquery.unique_id)
+        if self.model.depends_on and self.model.depends_on.macros:
+            depends_on_macros.extend(self.model.depends_on.macros)
+        lookup_macros = depends_on_macros.copy()
+        for macro_unique_id in lookup_macros:
+            lookup_macro = self.macro_resolver.macros.get(macro_unique_id)
+            if lookup_macro:
+                depends_on_macros.extend(lookup_macro.depends_on.macros)
+
+        macro_namespace = TestMacroNamespace(
+            self.macro_resolver, self._ctx, self.model, self.thread_ctx,
+            depends_on_macros
+        )
+        self.namespace = macro_namespace
+
+    @contextmember
+    def env_var(self, var: str, default: Optional[str] = None) -> str:
+        return_value = None
+        if var.startswith(SECRET_ENV_PREFIX):
+            disallow_secret_env_var(var)
+        if var in os.environ:
+            return_value = os.environ[var]
+        elif default is not None:
+            return_value = default
+
+        if return_value is not None:
+            # Save the env_var value in the manifest and the var name in the source_file
+            if self.model:
+                self.manifest.env_vars[var] = return_value
+                # the "model" should only be test nodes, but just in case, check
+                if self.model.resource_type == NodeType.Test and self.model.file_key_name:
+                    source_file = self.manifest.files[self.model.file_id]
+                    (yaml_key, name) = self.model.file_key_name.split('.')
+                    source_file.add_env_var(var, yaml_key, name)
+            return return_value
+        else:
+            msg = f"Env var required but not provided: '{var}'"
+            raise_parsing_error(msg)
+
+
+def generate_test_context(
+    model: ManifestNode,
+    config: RuntimeConfig,
+    manifest: Manifest,
+    context_config: ContextConfig,
+    macro_resolver: MacroResolver
+) -> Dict[str, Any]:
+    ctx = TestContext(
+        model, config, manifest, ParseProvider(), context_config,
+        macro_resolver
+    )
+    # The 'to_dict' method in ManifestContext moves all of the macro names
+    # in the macro 'namespace' up to top level keys
+    return ctx.to_dict()

core/dbt/context/secret.py

@@ -0,0 +1,40 @@
+import os
+from typing import Any, Dict, Optional
+
+from .base import BaseContext, contextmember
+
+from dbt.exceptions import raise_parsing_error
+
+
+class SecretContext(BaseContext):
+    """This context is used in profiles.yml + packages.yml. It can render secret
+    env vars that aren't usable elsewhere"""
+
+    @contextmember
+    def env_var(self, var: str, default: Optional[str] = None) -> str:
+        """The env_var() function. Return the environment variable named 'var'.
+        If there is no such environment variable set, return the default.
+
+        If the default is None, raise an exception for an undefined variable.
+
+        In this context *only*, env_var will return the actual values of
+        env vars prefixed with DBT_ENV_SECRET_
+        """
+        return_value = None
+        if var in os.environ:
+            return_value = os.environ[var]
+        elif default is not None:
+            return_value = default
+
+        if return_value is not None:
+            self.env_vars[var] = return_value
+            return return_value
+        else:
+            msg = f"Env var required but not provided: '{var}'"
+            raise_parsing_error(msg)
+
+
+def generate_secret_context(cli_vars: Dict[str, Any]) -> Dict[str, Any]:
+    ctx = SecretContext(cli_vars)
+    # This is not a Mashumaro to_dict call
+    return ctx.to_dict()

core/dbt/context/target.py

@@ -8,6 +8,7 @@ from dbt.context.base import (
 
 
 class TargetContext(BaseContext):
+    # subclass is ConfiguredContext
     def __init__(self, config: HasCredentials, cli_vars: Dict[str, Any]):
         super().__init__(cli_vars=cli_vars)
         self.config = config

core/dbt/contracts/README.md

@@ -0,0 +1 @@
+# Contracts README

core/dbt/contracts/common.py

@@ -1,11 +0,0 @@
-
-
-def named_property(name, doc=None):
-    def get_prop(self):
-        return self._contents.get(name)
-
-    def set_prop(self, value):
-        self._contents[name] = value
-        self.validate()
-
-    return property(get_prop, set_prop, doc=doc)

core/dbt/contracts/connection.py

@@ -1,25 +1,40 @@
 import abc
 import itertools
+import hashlib
 from dataclasses import dataclass, field
 from typing import (
-    Any, ClassVar, Dict, Tuple, Iterable, Optional, NewType, List, Callable,
+    Any, ClassVar, Dict, Tuple, Iterable, Optional, List, Callable,
 )
-from typing_extensions import Protocol
-
-from hologram import JsonSchemaMixin
-from hologram.helpers import (
-    StrEnum, register_pattern, ExtensibleJsonSchemaMixin
-)
-
-from dbt.contracts.util import Replaceable
 from dbt.exceptions import InternalException
 from dbt.utils import translate_aliases
+from dbt.events.functions import fire_event
+from dbt.events.types import NewConnectionOpening
+from typing_extensions import Protocol
+from dbt.dataclass_schema import (
+    dbtClassMixin, StrEnum, ExtensibleDbtClassMixin, HyphenatedDbtClassMixin,
+    ValidatedStringMixin, register_pattern
+)
+from dbt.contracts.util import Replaceable
 
 
-Identifier = NewType('Identifier', str)
+class Identifier(ValidatedStringMixin):
+    ValidationRegex = r'^[A-Za-z_][A-Za-z0-9_]+$'
+
+
+# we need register_pattern for jsonschema validation
 register_pattern(Identifier, r'^[A-Za-z_][A-Za-z0-9_]+$')
 
 
+@dataclass
+class AdapterResponse(dbtClassMixin):
+    _message: str
+    code: Optional[str] = None
+    rows_affected: Optional[int] = None
+
+    def __str__(self):
+        return self._message
+
+
 class ConnectionState(StrEnum):
     INIT = 'init'
     OPEN = 'open'
@@ -28,20 +43,19 @@ class ConnectionState(StrEnum):
 
 
 @dataclass(init=False)
-class Connection(ExtensibleJsonSchemaMixin, Replaceable):
+class Connection(ExtensibleDbtClassMixin, Replaceable):
     type: Identifier
-    name: Optional[str]
+    name: Optional[str] = None
     state: ConnectionState = ConnectionState.INIT
     transaction_open: bool = False
-    # prevent serialization
     _handle: Optional[Any] = None
-    _credentials: JsonSchemaMixin = field(init=False)
+    _credentials: Optional[Any] = None
 
     def __init__(
         self,
         type: Identifier,
         name: Optional[str],
-        credentials: JsonSchemaMixin,
+        credentials: dbtClassMixin,
         state: ConnectionState = ConnectionState.INIT,
         transaction_open: bool = False,
         handle: Optional[Any] = None,
@@ -83,10 +97,12 @@ class LazyHandle:
     """Opener must be a callable that takes a Connection object and opens the
     connection, updating the handle on the Connection.
     """
+
     def __init__(self, opener: Callable[[Connection], Connection]):
         self.opener = opener
 
     def resolve(self, connection: Connection) -> Connection:
+        fire_event(NewConnectionOpening(connection_state=connection.state))
         return self.opener(connection)
 
 
@@ -96,7 +112,7 @@ class LazyHandle:
 # will work.
 @dataclass  # type: ignore
 class Credentials(
-    ExtensibleJsonSchemaMixin,
+    ExtensibleDbtClassMixin,
     Replaceable,
     metaclass=abc.ABCMeta
 ):
@@ -110,12 +126,25 @@ class Credentials(
             'type not implemented for base credentials class'
         )
 
+    @property
+    def unique_field(self) -> str:
+        """Hashed and included in anonymous telemetry to track adapter adoption.
+        Return the field from Credentials that can uniquely identify
+        one team/organization using this adapter
+        """
+        raise NotImplementedError(
+            'unique_field not implemented for base credentials class'
+        )
+
+    def hashed_unique_field(self) -> str:
+        return hashlib.md5(self.unique_field.encode('utf-8')).hexdigest()
+
     def connection_info(
         self, *, with_aliases: bool = False
     ) -> Iterable[Tuple[str, Any]]:
         """Return an ordered iterator of key/value pairs for pretty-printing.
         """
-        as_dict = self.to_dict(omit_none=False, with_aliases=with_aliases)
+        as_dict = self.to_dict(omit_none=False)
         connection_keys = set(self._connection_keys())
         aliases: List[str] = []
         if with_aliases:
@@ -131,9 +160,10 @@ class Credentials(
         raise NotImplementedError
 
     @classmethod
-    def from_dict(cls, data):
+    def __pre_deserialize__(cls, data):
+        data = super().__pre_deserialize__(data)
         data = cls.translate_aliases(data)
-        return super().from_dict(data)
+        return data
 
     @classmethod
     def translate_aliases(
@@ -141,36 +171,28 @@ class Credentials(
     ) -> Dict[str, Any]:
         return translate_aliases(kwargs, cls._ALIASES, recurse)
 
-    def to_dict(self, omit_none=True, validate=False, *, with_aliases=False):
-        serialized = super().to_dict(omit_none=omit_none, validate=validate)
-        if with_aliases:
-            serialized.update({
-                new_name: serialized[canonical_name]
+    def __post_serialize__(self, dct):
+        # no super() -- do we need it?
+        if self._ALIASES:
+            dct.update({
+                new_name: dct[canonical_name]
                 for new_name, canonical_name in self._ALIASES.items()
-                if canonical_name in serialized
+                if canonical_name in dct
             })
-        return serialized
+        return dct
 
 
 class UserConfigContract(Protocol):
     send_anonymous_usage_stats: bool
-    use_colors: bool
-    partial_parse: Optional[bool]
-    printer_width: Optional[int]
-
-    def set_values(self, cookie_dir: str) -> None:
-        ...
-
-    def to_dict(
-        self, omit_none: bool = True, validate: bool = False
-    ) -> Dict[str, Any]:
-        ...
+    use_colors: Optional[bool] = None
+    partial_parse: Optional[bool] = None
+    printer_width: Optional[int] = None
 
 
 class HasCredentials(Protocol):
     credentials: Credentials
     profile_name: str
-    config: UserConfigContract
+    user_config: UserConfigContract
     target_name: str
     threads: int
 
@@ -199,9 +221,10 @@ DEFAULT_QUERY_COMMENT = '''
 
 
 @dataclass
-class QueryComment(JsonSchemaMixin):
+class QueryComment(HyphenatedDbtClassMixin):
     comment: str = DEFAULT_QUERY_COMMENT
     append: bool = False
+    job_label: bool = False
 
 
 class AdapterRequiredConfig(HasCredentials, Protocol):

core/dbt/contracts/files.py

@@ -0,0 +1,322 @@
+import hashlib
+import os
+from dataclasses import dataclass, field
+from mashumaro.types import SerializableType
+from typing import List, Optional, Union, Dict, Any
+
+from dbt.dataclass_schema import dbtClassMixin, StrEnum
+
+from .util import SourceKey
+
+
+MAXIMUM_SEED_SIZE = 1 * 1024 * 1024
+MAXIMUM_SEED_SIZE_NAME = '1MB'
+
+
+class ParseFileType(StrEnum):
+    Macro = 'macro'
+    Model = 'model'
+    Snapshot = 'snapshot'
+    Analysis = 'analysis'
+    SingularTest = 'singular_test'
+    GenericTest = 'generic_test'
+    Seed = 'seed'
+    Documentation = 'docs'
+    Schema = 'schema'
+    Hook = 'hook'   # not a real filetype, from dbt_project.yml
+
+
+parse_file_type_to_parser = {
+    ParseFileType.Macro: 'MacroParser',
+    ParseFileType.Model: 'ModelParser',
+    ParseFileType.Snapshot: 'SnapshotParser',
+    ParseFileType.Analysis: 'AnalysisParser',
+    ParseFileType.SingularTest: 'SingularTestParser',
+    ParseFileType.GenericTest: 'GenericTestParser',
+    ParseFileType.Seed: 'SeedParser',
+    ParseFileType.Documentation: 'DocumentationParser',
+    ParseFileType.Schema: 'SchemaParser',
+    ParseFileType.Hook: 'HookParser',
+}
+
+
+@dataclass
+class FilePath(dbtClassMixin):
+    searched_path: str
+    relative_path: str
+    modification_time: float
+    project_root: str
+
+    @property
+    def search_key(self) -> str:
+        # TODO: should this be project name + path relative to project root?
+        return self.absolute_path
+
+    @property
+    def full_path(self) -> str:
+        # useful for symlink preservation
+        return os.path.join(
+            self.project_root, self.searched_path, self.relative_path
+        )
+
+    @property
+    def absolute_path(self) -> str:
+        return os.path.abspath(self.full_path)
+
+    @property
+    def original_file_path(self) -> str:
+        # this is mostly used for reporting errors. It doesn't show the project
+        # name, should it?
+        return os.path.join(
+            self.searched_path, self.relative_path
+        )
+
+    def seed_too_large(self) -> bool:
+        """Return whether the file this represents is over the seed size limit
+        """
+        return os.stat(self.full_path).st_size > MAXIMUM_SEED_SIZE
+
+
+@dataclass
+class FileHash(dbtClassMixin):
+    name: str  # the hash type name
+    checksum: str  # the hashlib.hash_type().hexdigest() of the file contents
+
+    @classmethod
+    def empty(cls):
+        return FileHash(name='none', checksum='')
+
+    @classmethod
+    def path(cls, path: str):
+        return FileHash(name='path', checksum=path)
+
+    def __eq__(self, other):
+        if not isinstance(other, FileHash):
+            return NotImplemented
+
+        if self.name == 'none' or self.name != other.name:
+            return False
+
+        return self.checksum == other.checksum
+
+    def compare(self, contents: str) -> bool:
+        """Compare the file contents with the given hash"""
+        if self.name == 'none':
+            return False
+
+        return self.from_contents(contents, name=self.name) == self.checksum
+
+    @classmethod
+    def from_contents(cls, contents: str, name='sha256') -> 'FileHash':
+        """Create a file hash from the given file contents. The hash is always
+        the utf-8 encoding of the contents given, because dbt only reads files
+        as utf-8.
+        """
+        data = contents.encode('utf-8')
+        checksum = hashlib.new(name, data).hexdigest()
+        return cls(name=name, checksum=checksum)
+
+
+@dataclass
+class RemoteFile(dbtClassMixin):
+    @property
+    def searched_path(self) -> str:
+        return 'from remote system'
+
+    @property
+    def relative_path(self) -> str:
+        return 'from remote system'
+
+    @property
+    def absolute_path(self) -> str:
+        return 'from remote system'
+
+    @property
+    def original_file_path(self):
+        return 'from remote system'
+
+    @property
+    def modification_time(self):
+        return 'from remote system'
+
+
+@dataclass
+class BaseSourceFile(dbtClassMixin, SerializableType):
+    """Define a source file in dbt"""
+    path: Union[FilePath, RemoteFile]  # the path information
+    checksum: FileHash
+    # Seems like knowing which project the file came from would be useful
+    project_name: Optional[str] = None
+    # Parse file type: i.e. which parser will process this file
+    parse_file_type: Optional[ParseFileType] = None
+    # we don't want to serialize this
+    contents: Optional[str] = None
+    # the unique IDs contained in this file
+
+    @property
+    def file_id(self):
+        if isinstance(self.path, RemoteFile):
+            return None
+        return f'{self.project_name}://{self.path.original_file_path}'
+
+    def _serialize(self):
+        dct = self.to_dict()
+        return dct
+
+    @classmethod
+    def _deserialize(cls, dct: Dict[str, int]):
+        if dct['parse_file_type'] == 'schema':
+            sf = SchemaSourceFile.from_dict(dct)
+        else:
+            sf = SourceFile.from_dict(dct)
+        return sf
+
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        # remove empty lists to save space
+        dct_keys = list(dct.keys())
+        for key in dct_keys:
+            if isinstance(dct[key], list) and not dct[key]:
+                del dct[key]
+        # remove contents. Schema files will still have 'dict_from_yaml'
+        # from the contents
+        if 'contents' in dct:
+            del dct['contents']
+        return dct
+
+
+@dataclass
+class SourceFile(BaseSourceFile):
+    nodes: List[str] = field(default_factory=list)
+    docs: List[str] = field(default_factory=list)
+    macros: List[str] = field(default_factory=list)
+    env_vars: List[str] = field(default_factory=list)
+
+    @classmethod
+    def big_seed(cls, path: FilePath) -> 'SourceFile':
+        """Parse seeds over the size limit with just the path"""
+        self = cls(path=path, checksum=FileHash.path(path.original_file_path))
+        self.contents = ''
+        return self
+
+    def add_node(self, value):
+        if value not in self.nodes:
+            self.nodes.append(value)
+
+    # TODO: do this a different way. This remote file kludge isn't going
+    # to work long term
+    @classmethod
+    def remote(cls, contents: str, project_name: str) -> 'SourceFile':
+        self = cls(
+            path=RemoteFile(),
+            checksum=FileHash.from_contents(contents),
+            project_name=project_name,
+            contents=contents,
+        )
+        return self
+
+
+@dataclass
+class SchemaSourceFile(BaseSourceFile):
+    dfy: Dict[str, Any] = field(default_factory=dict)
+    # these are in the manifest.nodes dictionary
+    tests: Dict[str, Any] = field(default_factory=dict)
+    sources: List[str] = field(default_factory=list)
+    exposures: List[str] = field(default_factory=list)
+    metrics: List[str] = field(default_factory=list)
+    # node patches contain models, seeds, snapshots, analyses
+    ndp: List[str] = field(default_factory=list)
+    # any macro patches in this file by macro unique_id.
+    mcp: Dict[str, str] = field(default_factory=dict)
+    # any source patches in this file. The entries are package, name pairs
+    # Patches are only against external sources. Sources can be
+    # created too, but those are in 'sources'
+    sop: List[SourceKey] = field(default_factory=list)
+    env_vars: Dict[str, Any] = field(default_factory=dict)
+    pp_dict: Optional[Dict[str, Any]] = None
+    pp_test_index: Optional[Dict[str, Any]] = None
+
+    @property
+    def dict_from_yaml(self):
+        return self.dfy
+
+    @property
+    def node_patches(self):
+        return self.ndp
+
+    @property
+    def macro_patches(self):
+        return self.mcp
+
+    @property
+    def source_patches(self):
+        return self.sop
+
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        # Remove partial parsing specific data
+        for key in ('pp_test_index', 'pp_dict'):
+            if key in dct:
+                del dct[key]
+        return dct
+
+    def append_patch(self, yaml_key, unique_id):
+        self.node_patches.append(unique_id)
+
+    def add_test(self, node_unique_id, test_from):
+        name = test_from['name']
+        key = test_from['key']
+        if key not in self.tests:
+            self.tests[key] = {}
+        if name not in self.tests[key]:
+            self.tests[key][name] = []
+        self.tests[key][name].append(node_unique_id)
+
+    def remove_tests(self, yaml_key, name):
+        if yaml_key in self.tests:
+            if name in self.tests[yaml_key]:
+                del self.tests[yaml_key][name]
+
+    def get_tests(self, yaml_key, name):
+        if yaml_key in self.tests:
+            if name in self.tests[yaml_key]:
+                return self.tests[yaml_key][name]
+        return []
+
+    def get_key_and_name_for_test(self, test_unique_id):
+        yaml_key = None
+        block_name = None
+        for key in self.tests.keys():
+            for name in self.tests[key]:
+                for unique_id in self.tests[key][name]:
+                    if unique_id == test_unique_id:
+                        yaml_key = key
+                        block_name = name
+                        break
+        return (yaml_key, block_name)
+
+    def get_all_test_ids(self):
+        test_ids = []
+        for key in self.tests.keys():
+            for name in self.tests[key]:
+                test_ids.extend(self.tests[key][name])
+        return test_ids
+
+    def add_env_var(self, var, yaml_key, name):
+        if yaml_key not in self.env_vars:
+            self.env_vars[yaml_key] = {}
+        if name not in self.env_vars[yaml_key]:
+            self.env_vars[yaml_key][name] = []
+        if var not in self.env_vars[yaml_key][name]:
+            self.env_vars[yaml_key][name].append(var)
+
+    def delete_from_env_vars(self, yaml_key, name):
+        # We delete all vars for this yaml_key/name because the
+        # entry has been scheduled for reparsing.
+        if yaml_key in self.env_vars and name in self.env_vars[yaml_key]:
+            del self.env_vars[yaml_key][name]
+            if not self.env_vars[yaml_key]:
+                del self.env_vars[yaml_key]
+
+
+AnySourceFile = Union[SchemaSourceFile, SourceFile]

core/dbt/contracts/graph/compiled.py

@@ -2,59 +2,50 @@ from dbt.contracts.graph.parsed import (
     HasTestMetadata,
     ParsedNode,
     ParsedAnalysisNode,
-    ParsedDataTestNode,
+    ParsedSingularTestNode,
     ParsedHookNode,
     ParsedModelNode,
+    ParsedExposure,
+    ParsedMetric,
     ParsedResource,
     ParsedRPCNode,
-    ParsedSchemaTestNode,
+    ParsedSqlNode,
+    ParsedGenericTestNode,
     ParsedSeedNode,
     ParsedSnapshotNode,
     ParsedSourceDefinition,
     SeedConfig,
     TestConfig,
+    same_seeds,
 )
 from dbt.node_types import NodeType
 from dbt.contracts.util import Replaceable
-from dbt.exceptions import RuntimeException
 
-from hologram import JsonSchemaMixin
+from dbt.dataclass_schema import dbtClassMixin
 from dataclasses import dataclass, field
-import sqlparse  # type: ignore
 from typing import Optional, List, Union, Dict, Type
 
 
 @dataclass
-class InjectedCTE(JsonSchemaMixin, Replaceable):
+class InjectedCTE(dbtClassMixin, Replaceable):
     id: str
     sql: str
 
-# for some frustrating reason, we can't subclass from ParsedNode directly,
-# or typing.Union will flatten CompiledNode+ParsedNode into just ParsedNode.
-# TODO: understand that issue and come up with some way for these two to share
-# logic
+
+@dataclass
+class CompiledNodeMixin(dbtClassMixin):
+    # this is a special mixin class to provide a required argument. If a node
+    # is missing a `compiled` flag entirely, it must not be a CompiledNode.
+    compiled: bool
 
 
 @dataclass
-class CompiledNode(ParsedNode):
-    compiled: bool = False
+class CompiledNode(ParsedNode, CompiledNodeMixin):
     compiled_sql: Optional[str] = None
     extra_ctes_injected: bool = False
     extra_ctes: List[InjectedCTE] = field(default_factory=list)
-    injected_sql: Optional[str] = None
-
-    def prepend_ctes(self, prepended_ctes: List[InjectedCTE]):
-        self.extra_ctes_injected = True
-        self.extra_ctes = prepended_ctes
-        if self.compiled_sql is None:
-            raise RuntimeException(
-                'Cannot prepend ctes to an unparsed node', self
-            )
-        self.injected_sql = _inject_ctes_into_sql(
-            self.compiled_sql,
-            prepended_ctes,
-        )
-        self.validate(self.to_dict())
+    relation_name: Optional[str] = None
+    _pre_injected_sql: Optional[str] = None
 
     def set_cte(self, cte_id: str, sql: str):
         """This is the equivalent of what self.extra_ctes[cte_id] = sql would
@@ -67,6 +58,12 @@ class CompiledNode(ParsedNode):
         else:
             self.extra_ctes.append(InjectedCTE(id=cte_id, sql=sql))
 
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        if '_pre_injected_sql' in dct:
+            del dct['_pre_injected_sql']
+        return dct
+
 
 @dataclass
 class CompiledAnalysisNode(CompiledNode):
@@ -86,13 +83,20 @@ class CompiledModelNode(CompiledNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Model]})
 
 
+# TODO: rm?
 @dataclass
 class CompiledRPCNode(CompiledNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.RPCCall]})
 
 
+@dataclass
+class CompiledSqlNode(CompiledNode):
+    resource_type: NodeType = field(metadata={'restrict': [NodeType.SqlOperation]})
+
+
 @dataclass
 class CompiledSeedNode(CompiledNode):
+    # keep this in sync with ParsedSeedNode!
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Seed]})
     config: SeedConfig = field(default_factory=SeedConfig)
 
@@ -101,6 +105,9 @@ class CompiledSeedNode(CompiledNode):
         """ Seeds are never empty"""
         return False
 
+    def same_body(self, other) -> bool:
+        return same_seeds(self, other)
+
 
 @dataclass
 class CompiledSnapshotNode(CompiledNode):
@@ -108,79 +115,35 @@ class CompiledSnapshotNode(CompiledNode):
 
 
 @dataclass
-class CompiledDataTestNode(CompiledNode):
+class CompiledSingularTestNode(CompiledNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Test]})
-    config: TestConfig = field(default_factory=TestConfig)
+    # Was not able to make mypy happy and keep the code working. We need to
+    # refactor the various configs.
+    config: TestConfig = field(default_factory=TestConfig)  # type:ignore
 
 
 @dataclass
-class CompiledSchemaTestNode(CompiledNode, HasTestMetadata):
+class CompiledGenericTestNode(CompiledNode, HasTestMetadata):
+    # keep this in sync with ParsedGenericTestNode!
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Test]})
     column_name: Optional[str] = None
-    config: TestConfig = field(default_factory=TestConfig)
+    file_key_name: Optional[str] = None
+    # Was not able to make mypy happy and keep the code working. We need to
+    # refactor the various configs.
+    config: TestConfig = field(default_factory=TestConfig)  # type:ignore
+
+    def same_contents(self, other) -> bool:
+        if other is None:
+            return False
+
+        return (
+            self.same_config(other) and
+            self.same_fqn(other) and
+            True
+        )
 
 
-CompiledTestNode = Union[CompiledDataTestNode, CompiledSchemaTestNode]
-
-
-def _inject_ctes_into_sql(sql: str, ctes: List[InjectedCTE]) -> str:
-    """
-    `ctes` is a list of InjectedCTEs like:
-
-        [
-            InjectedCTE(
-                id="cte_id_1",
-                sql="__dbt__CTE__ephemeral as (select * from table)",
-            ),
-            InjectedCTE(
-                id="cte_id_2",
-                sql="__dbt__CTE__events as (select id, type from events)",
-            ),
-        ]
-
-    Given `sql` like:
-
-      "with internal_cte as (select * from sessions)
-       select * from internal_cte"
-
-    This will spit out:
-
-      "with __dbt__CTE__ephemeral as (select * from table),
-            __dbt__CTE__events as (select id, type from events),
-            with internal_cte as (select * from sessions)
-       select * from internal_cte"
-
-    (Whitespace enhanced for readability.)
-    """
-    if len(ctes) == 0:
-        return sql
-
-    parsed_stmts = sqlparse.parse(sql)
-    parsed = parsed_stmts[0]
-
-    with_stmt = None
-    for token in parsed.tokens:
-        if token.is_keyword and token.normalized == 'WITH':
-            with_stmt = token
-            break
-
-    if with_stmt is None:
-        # no with stmt, add one, and inject CTEs right at the beginning
-        first_token = parsed.token_first()
-        with_stmt = sqlparse.sql.Token(sqlparse.tokens.Keyword, 'with')
-        parsed.insert_before(first_token, with_stmt)
-    else:
-        # stmt exists, add a comma (which will come after injected CTEs)
-        trailing_comma = sqlparse.sql.Token(sqlparse.tokens.Punctuation, ',')
-        parsed.insert_after(with_stmt, trailing_comma)
-
-    token = sqlparse.sql.Token(
-        sqlparse.tokens.Keyword,
-        ", ".join(c.sql for c in ctes)
-    )
-    parsed.insert_after(with_stmt, token)
-
-    return str(parsed)
+CompiledTestNode = Union[CompiledSingularTestNode, CompiledGenericTestNode]
 
 
 PARSED_TYPES: Dict[Type[CompiledNode], Type[ParsedResource]] = {
@@ -188,10 +151,11 @@ PARSED_TYPES: Dict[Type[CompiledNode], Type[ParsedResource]] = {
     CompiledModelNode: ParsedModelNode,
     CompiledHookNode: ParsedHookNode,
     CompiledRPCNode: ParsedRPCNode,
+    CompiledSqlNode: ParsedSqlNode,
     CompiledSeedNode: ParsedSeedNode,
     CompiledSnapshotNode: ParsedSnapshotNode,
-    CompiledDataTestNode: ParsedDataTestNode,
-    CompiledSchemaTestNode: ParsedSchemaTestNode,
+    CompiledSingularTestNode: ParsedSingularTestNode,
+    CompiledGenericTestNode: ParsedGenericTestNode,
 }
 
 
@@ -200,10 +164,11 @@ COMPILED_TYPES: Dict[Type[ParsedResource], Type[CompiledNode]] = {
     ParsedModelNode: CompiledModelNode,
     ParsedHookNode: CompiledHookNode,
     ParsedRPCNode: CompiledRPCNode,
+    ParsedSqlNode: CompiledSqlNode,
     ParsedSeedNode: CompiledSeedNode,
     ParsedSnapshotNode: CompiledSnapshotNode,
-    ParsedDataTestNode: CompiledDataTestNode,
-    ParsedSchemaTestNode: CompiledSchemaTestNode,
+    ParsedSingularTestNode: CompiledSingularTestNode,
+    ParsedGenericTestNode: CompiledGenericTestNode,
 }
 
 
@@ -226,35 +191,36 @@ def parsed_instance_for(compiled: CompiledNode) -> ParsedResource:
         raise ValueError('invalid resource_type: {}'
                          .format(compiled.resource_type))
 
-    # validate=False to allow extra keys from compiling
-    return cls.from_dict(compiled.to_dict(), validate=False)
+    return cls.from_dict(compiled.to_dict(omit_none=True))
 
 
 NonSourceCompiledNode = Union[
     CompiledAnalysisNode,
-    CompiledDataTestNode,
+    CompiledSingularTestNode,
     CompiledModelNode,
     CompiledHookNode,
     CompiledRPCNode,
-    CompiledSchemaTestNode,
+    CompiledSqlNode,
+    CompiledGenericTestNode,
     CompiledSeedNode,
     CompiledSnapshotNode,
 ]
 
 NonSourceParsedNode = Union[
     ParsedAnalysisNode,
-    ParsedDataTestNode,
+    ParsedSingularTestNode,
     ParsedHookNode,
     ParsedModelNode,
     ParsedRPCNode,
-    ParsedSchemaTestNode,
+    ParsedSqlNode,
+    ParsedGenericTestNode,
     ParsedSeedNode,
     ParsedSnapshotNode,
 ]
 
 
 # This is anything that can be in manifest.nodes.
-NonSourceNode = Union[
+ManifestNode = Union[
     NonSourceCompiledNode,
     NonSourceParsedNode,
 ]
@@ -263,6 +229,14 @@ NonSourceNode = Union[
 # 'compile()' calls in the runner actually just return the original parsed
 # node they were given.
 CompileResultNode = Union[
-    NonSourceNode,
+    ManifestNode,
     ParsedSourceDefinition,
 ]
+
+# anything that participates in the graph: sources, exposures, metrics,
+# or manifest nodes
+GraphMemberNode = Union[
+    CompileResultNode,
+    ParsedExposure,
+    ParsedMetric,
+]

core/dbt/contracts/graph/model_config.py

@@ -1,27 +1,23 @@
 from dataclasses import field, Field, dataclass
 from enum import Enum
+from itertools import chain
 from typing import (
-    Any, List, Optional, Dict, MutableMapping, Union, Type, NewType, Tuple,
-    TypeVar
+    Any, List, Optional, Dict, Union, Type, TypeVar, Callable
+)
+from dbt.dataclass_schema import (
+    dbtClassMixin, ValidationError, register_pattern,
 )
-
-# TODO: patch+upgrade hologram to avoid this jsonschema import
-import jsonschema  # type: ignore
-
-# This is protected, but we really do want to reuse this logic, and the cache!
-# It would be nice to move the custom error picking stuff into hologram!
-from hologram import _validate_schema
-from hologram import JsonSchemaMixin, ValidationError
-from hologram.helpers import StrEnum, register_pattern
-
-from dbt import hooks
 from dbt.contracts.graph.unparsed import AdditionalPropertiesAllowed
-from dbt.exceptions import CompilationException, InternalException
+from dbt.exceptions import InternalException, CompilationException
 from dbt.contracts.util import Replaceable, list_str
+from dbt import hooks
 from dbt.node_types import NodeType
 
 
-def _get_meta_value(cls: Type[Enum], fld: Field, key: str, default: Any):
+M = TypeVar('M', bound='Metadata')
+
+
+def _get_meta_value(cls: Type[M], fld: Field, key: str, default: Any) -> M:
     # a metadata field might exist. If it does, it might have a matching key.
     # If it has both, make sure the value is valid and return it. If it
     # doesn't, return the default.
@@ -39,7 +35,7 @@ def _get_meta_value(cls: Type[Enum], fld: Field, key: str, default: Any):
 
 
 def _set_meta_value(
-    obj: Enum, key: str, existing: Optional[Dict[str, Any]] = None
+    obj: M, key: str, existing: Optional[Dict[str, Any]] = None
 ) -> Dict[str, Any]:
     if existing is None:
         result = {}
@@ -49,35 +45,82 @@ def _set_meta_value(
     return result
 
 
-MERGE_KEY = 'merge'
+class Metadata(Enum):
+    @classmethod
+    def from_field(cls: Type[M], fld: Field) -> M:
+        default = cls.default_field()
+        key = cls.metadata_key()
+
+        return _get_meta_value(cls, fld, key, default)
+
+    def meta(
+        self, existing: Optional[Dict[str, Any]] = None
+    ) -> Dict[str, Any]:
+        key = self.metadata_key()
+        return _set_meta_value(self, key, existing)
+
+    @classmethod
+    def default_field(cls) -> 'Metadata':
+        raise NotImplementedError('Not implemented')
+
+    @classmethod
+    def metadata_key(cls) -> str:
+        raise NotImplementedError('Not implemented')
 
 
-class MergeBehavior(Enum):
+class MergeBehavior(Metadata):
     Append = 1
     Update = 2
     Clobber = 3
 
     @classmethod
-    def from_field(cls, fld: Field) -> 'MergeBehavior':
-        return _get_meta_value(cls, fld, MERGE_KEY, cls.Clobber)
+    def default_field(cls) -> 'MergeBehavior':
+        return cls.Clobber
 
-    def meta(self, existing: Optional[Dict[str, Any]] = None):
-        return _set_meta_value(self, MERGE_KEY, existing)
+    @classmethod
+    def metadata_key(cls) -> str:
+        return 'merge'
 
 
-SHOW_HIDE_KEY = 'show_hide'
-
-
-class ShowBehavior(Enum):
+class ShowBehavior(Metadata):
     Show = 1
     Hide = 2
 
     @classmethod
-    def from_field(cls, fld: Field) -> 'ShowBehavior':
-        return _get_meta_value(cls, fld, SHOW_HIDE_KEY, cls.Show)
+    def default_field(cls) -> 'ShowBehavior':
+        return cls.Show
 
-    def meta(self, existing: Optional[Dict[str, Any]] = None):
-        return _set_meta_value(self, SHOW_HIDE_KEY, existing)
+    @classmethod
+    def metadata_key(cls) -> str:
+        return 'show_hide'
+
+    @classmethod
+    def should_show(cls, fld: Field) -> bool:
+        return cls.from_field(fld) == cls.Show
+
+
+class CompareBehavior(Metadata):
+    Include = 1
+    Exclude = 2
+
+    @classmethod
+    def default_field(cls) -> 'CompareBehavior':
+        return cls.Include
+
+    @classmethod
+    def metadata_key(cls) -> str:
+        return 'compare'
+
+    @classmethod
+    def should_include(cls, fld: Field) -> bool:
+        return cls.from_field(fld) == cls.Include
+
+
+def metas(*metas: Metadata) -> Dict[str, Any]:
+    existing: Dict[str, Any] = {}
+    for m in metas:
+        existing = m.meta(existing)
+    return existing
 
 
 def _listify(value: Any) -> List:
@@ -119,21 +162,15 @@ def insensitive_patterns(*patterns: str):
     return '^({})$'.format('|'.join(lowercased))
 
 
-Severity = NewType('Severity', str)
+class Severity(str):
+    pass
+
+
 register_pattern(Severity, insensitive_patterns('warn', 'error'))
 
 
-class SnapshotStrategy(StrEnum):
-    Timestamp = 'timestamp'
-    Check = 'check'
-
-
-class All(StrEnum):
-    All = 'all'
-
-
 @dataclass
-class Hook(JsonSchemaMixin, Replaceable):
+class Hook(dbtClassMixin, Replaceable):
     sql: str
     transaction: bool = True
     index: Optional[int] = None
@@ -144,19 +181,23 @@ T = TypeVar('T', bound='BaseConfig')
 
 @dataclass
 class BaseConfig(
-    AdditionalPropertiesAllowed, Replaceable, MutableMapping[str, Any]
+    AdditionalPropertiesAllowed, Replaceable
 ):
-    # Implement MutableMapping so this config will behave as some macros expect
-    # during parsing (notably, syntax like `{{ node.config['schema'] }}`)
+
+    # enable syntax like: config['key']
     def __getitem__(self, key):
-        """Handle parse-time use of `config` as a dictionary, making the extra
-        values available during parsing.
-        """
+        return self.get(key)
+
+    # like doing 'get' on a dictionary
+    def get(self, key, default=None):
         if hasattr(self, key):
             return getattr(self, key)
-        else:
+        elif key in self._extra:
             return self._extra[key]
+        else:
+            return default
 
+    # enable syntax like: config['key'] = value
     def __setitem__(self, key, value):
         if hasattr(self, key):
             setattr(self, key, value)
@@ -173,18 +214,68 @@ class BaseConfig(
         else:
             del self._extra[key]
 
-    def __iter__(self):
+    def _content_iterator(self, include_condition: Callable[[Field], bool]):
+        seen = set()
         for fld, _ in self._get_fields():
-            yield fld.name
+            seen.add(fld.name)
+            if include_condition(fld):
+                yield fld.name
 
         for key in self._extra:
-            yield key
+            if key not in seen:
+                seen.add(key)
+                yield key
+
+    def __iter__(self):
+        yield from self._content_iterator(include_condition=lambda f: True)
 
     def __len__(self):
         return len(self._get_fields()) + len(self._extra)
 
+    @staticmethod
+    def compare_key(
+        unrendered: Dict[str, Any],
+        other: Dict[str, Any],
+        key: str,
+    ) -> bool:
+        if key not in unrendered and key not in other:
+            return True
+        elif key not in unrendered and key in other:
+            return False
+        elif key in unrendered and key not in other:
+            return False
+        else:
+            return unrendered[key] == other[key]
+
     @classmethod
-    def _extract_dict(
+    def same_contents(
+        cls, unrendered: Dict[str, Any], other: Dict[str, Any]
+    ) -> bool:
+        """This is like __eq__, except it ignores some fields."""
+        seen = set()
+        for fld, target_name in cls._get_fields():
+            key = target_name
+            seen.add(key)
+            if CompareBehavior.should_include(fld):
+                if not cls.compare_key(unrendered, other, key):
+                    return False
+
+        for key in chain(unrendered, other):
+            if key not in seen:
+                seen.add(key)
+                if not cls.compare_key(unrendered, other, key):
+                    return False
+        return True
+
+    # This is used in 'add_config_call' to created the combined config_call_dict.
+    # 'meta' moved here from node
+    mergebehavior = {
+        "append": ['pre-hook', 'pre_hook', 'post-hook', 'post_hook', 'tags'],
+        "update": ['quoting', 'column_types', 'meta'],
+    }
+
+    @classmethod
+    def _merge_dicts(
         cls, src: Dict[str, Any], data: Dict[str, Any]
     ) -> Dict[str, Any]:
         """Find all the items in data that match a target_field on this class,
@@ -218,30 +309,6 @@ class BaseConfig(
             )
         return result
 
-    def to_dict(
-        self,
-        omit_none: bool = True,
-        validate: bool = False,
-        *,
-        omit_hidden: bool = True,
-    ) -> Dict[str, Any]:
-        result = super().to_dict(omit_none=omit_none, validate=validate)
-        if omit_hidden and not omit_none:
-            for fld, target_field in self._get_fields():
-                if target_field not in result:
-                    continue
-
-                # if the field is not None, preserve it regardless of the
-                # setting. This is in line with existing behavior, but isn't
-                # an endorsement of it!
-                if result[target_field] is not None:
-                    continue
-
-                show_behavior = ShowBehavior.from_field(fld)
-                if show_behavior == ShowBehavior.Hide:
-                    del result[target_field]
-        return result
-
     def update_from(
         self: T, data: Dict[str, Any], adapter_type: str, validate: bool = True
     ) -> T:
@@ -250,25 +317,36 @@ class BaseConfig(
         """
         # sadly, this is a circular import
         from dbt.adapters.factory import get_config_class_by_name
-        dct = self.to_dict(omit_none=False, validate=False, omit_hidden=False)
+        dct = self.to_dict(omit_none=False)
 
         adapter_config_cls = get_config_class_by_name(adapter_type)
 
-        self_merged = self._extract_dict(dct, data)
+        self_merged = self._merge_dicts(dct, data)
         dct.update(self_merged)
 
-        adapter_merged = adapter_config_cls._extract_dict(dct, data)
+        adapter_merged = adapter_config_cls._merge_dicts(dct, data)
         dct.update(adapter_merged)
 
         # any remaining fields must be "clobber"
         dct.update(data)
 
         # any validation failures must have come from the update
-        return self.from_dict(dct, validate=validate)
+        if validate:
+            self.validate(dct)
+        return self.from_dict(dct)
 
     def finalize_and_validate(self: T) -> T:
-        # from_dict will validate for us
-        dct = self.to_dict(omit_none=False, validate=False)
+        dct = self.to_dict(omit_none=False)
+        self.validate(dct)
+        return self.from_dict(dct)
+
+    def replace(self, **kwargs):
+        dct = self.to_dict(omit_none=True)
+
+        mapping = self.field_mapping()
+        for key, value in kwargs.items():
+            new_key = mapping.get(key, key)
+            dct[new_key] = value
         return self.from_dict(dct)
 
 
@@ -278,8 +356,38 @@ class SourceConfig(BaseConfig):
 
 
 @dataclass
-class NodeConfig(BaseConfig):
+class NodeAndTestConfig(BaseConfig):
     enabled: bool = True
+    # these fields are included in serialized output, but are not part of
+    # config comparison (they are part of database_representation)
+    alias: Optional[str] = field(
+        default=None,
+        metadata=CompareBehavior.Exclude.meta(),
+    )
+    schema: Optional[str] = field(
+        default=None,
+        metadata=CompareBehavior.Exclude.meta(),
+    )
+    database: Optional[str] = field(
+        default=None,
+        metadata=CompareBehavior.Exclude.meta(),
+    )
+    tags: Union[List[str], str] = field(
+        default_factory=list_str,
+        metadata=metas(ShowBehavior.Hide,
+                       MergeBehavior.Append,
+                       CompareBehavior.Exclude),
+    )
+    meta: Dict[str, Any] = field(
+        default_factory=dict,
+        metadata=MergeBehavior.Update.meta(),
+    )
+
+
+@dataclass
+class NodeConfig(NodeAndTestConfig):
+    # Note: if any new fields are added with MergeBehavior, also update the
+    # 'mergebehavior' dictionary
     materialized: str = 'view'
     persist_docs: Dict[str, Any] = field(default_factory=dict)
     post_hook: List[Hook] = field(
@@ -290,10 +398,6 @@ class NodeConfig(BaseConfig):
         default_factory=list,
         metadata=MergeBehavior.Append.meta(),
     )
-    vars: Dict[str, Any] = field(
-        default_factory=dict,
-        metadata=MergeBehavior.Update.meta(),
-    )
     quoting: Dict[str, Any] = field(
         default_factory=dict,
         metadata=MergeBehavior.Update.meta(),
@@ -304,32 +408,37 @@ class NodeConfig(BaseConfig):
         default_factory=dict,
         metadata=MergeBehavior.Update.meta(),
     )
-    # these fields are all config-only (they're ultimately applied to the node)
-    alias: Optional[str] = field(
-        default=None,
-        metadata=ShowBehavior.Hide.meta(),
-    )
-    schema: Optional[str] = field(
-        default=None,
-        metadata=ShowBehavior.Hide.meta(),
-    )
-    database: Optional[str] = field(
-        default=None,
-        metadata=ShowBehavior.Hide.meta(),
-    )
-    tags: Union[List[str], str] = field(
-        default_factory=list_str,
-        # TODO: hide this one?
-        metadata=MergeBehavior.Append.meta(),
-    )
+    full_refresh: Optional[bool] = None
+    on_schema_change: Optional[str] = 'ignore'
 
     @classmethod
-    def from_dict(cls, data, validate=True):
+    def __pre_deserialize__(cls, data):
+        data = super().__pre_deserialize__(data)
+        field_map = {'post-hook': 'post_hook', 'pre-hook': 'pre_hook'}
+        # create a new dict because otherwise it gets overwritten in
+        # tests
+        new_dict = {}
+        for key in data:
+            new_dict[key] = data[key]
+        data = new_dict
         for key in hooks.ModelHookType:
             if key in data:
                 data[key] = [hooks.get_hook_dict(h) for h in data[key]]
-        return super().from_dict(data, validate=validate)
+        for field_name in field_map:
+            if field_name in data:
+                new_name = field_map[field_name]
+                data[new_name] = data.pop(field_name)
+        return data
 
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        field_map = {'post_hook': 'post-hook', 'pre_hook': 'pre-hook'}
+        for field_name in field_map:
+            if field_name in dct:
+                dct[field_map[field_name]] = dct.pop(field_name)
+        return dct
+
+    # this is still used by jsonschema validation
     @classmethod
     def field_mapping(cls):
         return {'post_hook': 'post-hook', 'pre_hook': 'pre-hook'}
@@ -342,46 +451,44 @@ class SeedConfig(NodeConfig):
 
 
 @dataclass
-class TestConfig(NodeConfig):
+class TestConfig(NodeAndTestConfig):
+    # this is repeated because of a different default
+    schema: Optional[str] = field(
+        default='dbt_test__audit',
+        metadata=CompareBehavior.Exclude.meta(),
+    )
+    materialized: str = 'test'
     severity: Severity = Severity('ERROR')
-
-
-SnapshotVariants = Union[
-    'TimestampSnapshotConfig',
-    'CheckSnapshotConfig',
-    'GenericSnapshotConfig',
-]
-
-
-def _relevance_without_strategy(error: jsonschema.ValidationError):
-    # calculate the 'relevance' of an error the normal jsonschema way, except
-    # if the validator is in the 'strategy' field and its conflicting with the
-    # 'enum'. This suppresses `"'timestamp' is not one of ['check']` and such
-    if 'strategy' in error.path and error.validator in {'enum', 'not'}:
-        length = 1
-    else:
-        length = -len(error.path)
-    validator = error.validator
-    return length, validator not in {'anyOf', 'oneOf'}
-
-
-@dataclass
-class SnapshotWrapper(JsonSchemaMixin):
-    """This is a little wrapper to let us serialize/deserialize the
-    SnapshotVariants union.
-    """
-    config: SnapshotVariants  # mypy: ignore
+    store_failures: Optional[bool] = None
+    where: Optional[str] = None
+    limit: Optional[int] = None
+    fail_calc: str = 'count(*)'
+    warn_if: str = '!= 0'
+    error_if: str = '!= 0'
 
     @classmethod
-    def validate(cls, data: Any):
-        schema = _validate_schema(cls)
-        validator = jsonschema.Draft7Validator(schema)
-        error = jsonschema.exceptions.best_match(
-            validator.iter_errors(data),
-            key=_relevance_without_strategy,
-        )
-        if error is not None:
-            raise ValidationError.create_from(error) from error
+    def same_contents(
+        cls, unrendered: Dict[str, Any], other: Dict[str, Any]
+    ) -> bool:
+        """This is like __eq__, except it explicitly checks certain fields."""
+        modifiers = [
+            'severity',
+            'where',
+            'limit',
+            'fail_calc',
+            'warn_if',
+            'error_if',
+            'store_failures'
+        ]
+
+        seen = set()
+        for _, target_name in cls._get_fields():
+            key = target_name
+            seen.add(key)
+            if key in modifiers:
+                if not cls.compare_key(unrendered, other, key):
+                    return False
+        return True
 
 
 @dataclass
@@ -389,123 +496,49 @@ class EmptySnapshotConfig(NodeConfig):
     materialized: str = 'snapshot'
 
 
-@dataclass(init=False)
+@dataclass
 class SnapshotConfig(EmptySnapshotConfig):
-    unique_key: str = field(init=False, metadata=dict(init_required=True))
-    target_schema: str = field(init=False, metadata=dict(init_required=True))
+    strategy: Optional[str] = None
+    unique_key: Optional[str] = None
+    target_schema: Optional[str] = None
     target_database: Optional[str] = None
-
-    def __init__(
-        self,
-        unique_key: str,
-        target_schema: str,
-        target_database: Optional[str] = None,
-        **kwargs
-    ) -> None:
-        self.unique_key = unique_key
-        self.target_schema = target_schema
-        self.target_database = target_database
-        # kwargs['materialized'] = materialized
-        super().__init__(**kwargs)
-
-    # type hacks...
-    @classmethod
-    def _get_fields(cls) -> List[Tuple[Field, str]]:  # type: ignore
-        fields: List[Tuple[Field, str]] = []
-        for old_field, name in super()._get_fields():
-            new_field = old_field
-            # tell hologram we're really an initvar
-            if old_field.metadata and old_field.metadata.get('init_required'):
-                new_field = field(init=True, metadata=old_field.metadata)
-                new_field.name = old_field.name
-                new_field.type = old_field.type
-                new_field._field_type = old_field._field_type  # type: ignore
-            fields.append((new_field, name))
-        return fields
-
-    def finalize_and_validate(self: 'SnapshotConfig') -> SnapshotVariants:
-        data = self.to_dict()
-        return SnapshotWrapper.from_dict({'config': data}).config
-
-
-@dataclass(init=False)
-class GenericSnapshotConfig(SnapshotConfig):
-    strategy: str = field(init=False, metadata=dict(init_required=True))
-
-    def __init__(self, strategy: str, **kwargs) -> None:
-        self.strategy = strategy
-        super().__init__(**kwargs)
+    updated_at: Optional[str] = None
+    check_cols: Optional[Union[str, List[str]]] = None
 
     @classmethod
-    def _collect_json_schema(
-        cls, definitions: Dict[str, Any]
-    ) -> Dict[str, Any]:
-        # this is the method you want to override in hologram if you want
-        # to do clever things about the json schema and have classes that
-        # contain instances of your JsonSchemaMixin respect the change.
-        schema = super()._collect_json_schema(definitions)
+    def validate(cls, data):
+        super().validate(data)
+        if not data.get('strategy') or not data.get('unique_key') or not \
+                data.get('target_schema'):
+            raise ValidationError(
+                "Snapshots must be configured with a 'strategy', 'unique_key', "
+                "and 'target_schema'.")
+        if data.get('strategy') == 'check':
+            if not data.get('check_cols'):
+                raise ValidationError(
+                    "A snapshot configured with the check strategy must "
+                    "specify a check_cols configuration.")
+            if (isinstance(data['check_cols'], str) and
+                    data['check_cols'] != 'all'):
+                raise ValidationError(
+                    f"Invalid value for 'check_cols': {data['check_cols']}. "
+                    "Expected 'all' or a list of strings.")
 
-        # Instead of just the strategy we'd calculate normally, say
-        # "this strategy except none of our specialization strategies".
-        strategies = [schema['properties']['strategy']]
-        for specialization in (TimestampSnapshotConfig, CheckSnapshotConfig):
-            strategies.append(
-                {'not': specialization.json_schema()['properties']['strategy']}
-            )
+        elif data.get('strategy') == 'timestamp':
+            if not data.get('updated_at'):
+                raise ValidationError(
+                    "A snapshot configured with the timestamp strategy "
+                    "must specify an updated_at configuration.")
+            if data.get('check_cols'):
+                raise ValidationError(
+                    "A 'timestamp' snapshot should not have 'check_cols'")
+        # If the strategy is not 'check' or 'timestamp' it's a custom strategy,
+        # formerly supported with GenericSnapshotConfig
 
-        schema['properties']['strategy'] = {
-            'allOf': strategies
-        }
-        return schema
-
-
-@dataclass(init=False)
-class TimestampSnapshotConfig(SnapshotConfig):
-    strategy: str = field(
-        init=False,
-        metadata=dict(
-            restrict=[str(SnapshotStrategy.Timestamp)],
-            init_required=True,
-        ),
-    )
-    updated_at: str = field(init=False, metadata=dict(init_required=True))
-
-    def __init__(
-        self, strategy: str, updated_at: str, **kwargs
-    ) -> None:
-        self.strategy = strategy
-        self.updated_at = updated_at
-        super().__init__(**kwargs)
-
-
-@dataclass(init=False)
-class CheckSnapshotConfig(SnapshotConfig):
-    strategy: str = field(
-        init=False,
-        metadata=dict(
-            restrict=[str(SnapshotStrategy.Check)],
-            init_required=True,
-        ),
-    )
-    # TODO: is there a way to get this to accept tuples of strings? Adding
-    # `Tuple[str, ...]` to the list of types results in this:
-    # ['email'] is valid under each of {'type': 'array', 'items':
-    # {'type': 'string'}}, {'type': 'array', 'items': {'type': 'string'}}
-    # but without it, parsing gets upset about values like `('email',)`
-    # maybe hologram itself should support this behavior? It's not like tuples
-    # are meaningful in json
-    check_cols: Union[All, List[str]] = field(
-        init=False,
-        metadata=dict(init_required=True),
-    )
-
-    def __init__(
-        self, strategy: str, check_cols: Union[All, List[str]],
-        **kwargs
-    ) -> None:
-        self.strategy = strategy
-        self.check_cols = check_cols
-        super().__init__(**kwargs)
+    def finalize_and_validate(self):
+        data = self.to_dict(omit_none=True)
+        self.validate(data)
+        return self.from_dict(data)
 
 
 RESOURCE_TYPES: Dict[NodeType, Type[BaseConfig]] = {

core/dbt/contracts/graph/parsed.py

@@ -1,5 +1,7 @@
 import os
+import time
 from dataclasses import dataclass, field
+from mashumaro.types import SerializableType
 from pathlib import Path
 from typing import (
     Optional,
@@ -10,20 +12,25 @@ from typing import (
     Sequence,
     Tuple,
     Iterator,
+    TypeVar,
 )
 
-from hologram import JsonSchemaMixin
+from dbt.dataclass_schema import (
+    dbtClassMixin, ExtensibleDbtClassMixin
+)
 
 from dbt.clients.system import write_file
-import dbt.flags
+from dbt.contracts.files import FileHash, MAXIMUM_SEED_SIZE_NAME
 from dbt.contracts.graph.unparsed import (
     UnparsedNode, UnparsedDocumentation, Quoting, Docs,
     UnparsedBaseNode, FreshnessThreshold, ExternalTable,
     HasYamlMetadata, MacroArgument, UnparsedSourceDefinition,
-    UnparsedSourceTableDefinition, UnparsedColumn, TestDef
+    UnparsedSourceTableDefinition, UnparsedColumn, TestDef,
+    ExposureOwner, ExposureType, MaturityType, MetricFilter
 )
-from dbt.contracts.util import Replaceable
-from dbt.logger import GLOBAL_LOGGER as logger  # noqa
+from dbt.contracts.util import Replaceable, AdditionalPropertiesMixin
+from dbt.exceptions import warn_or_error
+from dbt import flags
 from dbt.node_types import NodeType
 
 
@@ -33,37 +40,40 @@ from .model_config import (
     TestConfig,
     SourceConfig,
     EmptySnapshotConfig,
-    SnapshotVariants,
-)
-# import these 3 so the SnapshotVariants forward ref works.
-from .model_config import (  # noqa
-    TimestampSnapshotConfig,
-    CheckSnapshotConfig,
-    GenericSnapshotConfig,
+    SnapshotConfig,
 )
 
 
 @dataclass
-class ColumnInfo(JsonSchemaMixin, Replaceable):
+class ColumnInfo(
+    AdditionalPropertiesMixin,
+    ExtensibleDbtClassMixin,
+    Replaceable
+):
     name: str
     description: str = ''
     meta: Dict[str, Any] = field(default_factory=dict)
     data_type: Optional[str] = None
+    quote: Optional[bool] = None
     tags: List[str] = field(default_factory=list)
+    _extra: Dict[str, Any] = field(default_factory=dict)
 
 
 @dataclass
-class HasFqn(JsonSchemaMixin, Replaceable):
+class HasFqn(dbtClassMixin, Replaceable):
     fqn: List[str]
 
+    def same_fqn(self, other: 'HasFqn') -> bool:
+        return self.fqn == other.fqn
+
 
 @dataclass
-class HasUniqueID(JsonSchemaMixin, Replaceable):
+class HasUniqueID(dbtClassMixin, Replaceable):
     unique_id: str
 
 
 @dataclass
-class MacroDependsOn(JsonSchemaMixin, Replaceable):
+class MacroDependsOn(dbtClassMixin, Replaceable):
     macros: List[str] = field(default_factory=list)
 
     # 'in' on lists is O(n) so this is O(n^2) for # of macros
@@ -82,12 +92,22 @@ class DependsOn(MacroDependsOn):
 
 
 @dataclass
-class HasRelationMetadata(JsonSchemaMixin, Replaceable):
+class HasRelationMetadata(dbtClassMixin, Replaceable):
     database: Optional[str]
     schema: str
 
+    # Can't set database to None like it ought to be
+    # because it messes up the subclasses and default parameters
+    # so hack it here
+    @classmethod
+    def __pre_deserialize__(cls, data):
+        data = super().__pre_deserialize__(data)
+        if 'database' not in data:
+            data['database'] = None
+        return data
 
-class ParsedNodeMixins(JsonSchemaMixin):
+
+class ParsedNodeMixins(dbtClassMixin):
     resource_type: NodeType
     depends_on: DependsOn
     config: NodeConfig
@@ -96,6 +116,21 @@ class ParsedNodeMixins(JsonSchemaMixin):
     def is_refable(self):
         return self.resource_type in NodeType.refable()
 
+    @property
+    def should_store_failures(self):
+        return self.resource_type == NodeType.Test and (
+            self.config.store_failures if self.config.store_failures is not None
+            else flags.STORE_FAILURES
+        )
+
+    # will this node map to an object in the database?
+    @property
+    def is_relational(self):
+        return (
+            self.resource_type in NodeType.refable() or
+            self.should_store_failures
+        )
+
     @property
     def is_ephemeral(self):
         return self.config.materialized == 'ephemeral'
@@ -112,21 +147,18 @@ class ParsedNodeMixins(JsonSchemaMixin):
         """Given a ParsedNodePatch, add the new information to the node."""
         # explicitly pick out the parts to update so we don't inadvertently
         # step on the model name or anything
-        self.patch_path: Optional[str] = patch.original_file_path
+        # Note: config should already be updated
+        self.patch_path: Optional[str] = patch.file_id
+        # update created_at so process_docs will run in partial parsing
+        self.created_at = time.time()
         self.description = patch.description
         self.columns = patch.columns
         self.meta = patch.meta
         self.docs = patch.docs
-        if dbt.flags.STRICT_MODE:
-            assert isinstance(self, JsonSchemaMixin)
-            self.to_dict(validate=True)
 
     def get_materialization(self):
         return self.config.materialized
 
-    def local_vars(self):
-        return self.config.vars
-
 
 @dataclass
 class ParsedNodeMandatory(
@@ -137,6 +169,7 @@ class ParsedNodeMandatory(
     Replaceable
 ):
     alias: str
+    checksum: FileHash
     config: NodeConfig = field(default_factory=NodeConfig)
 
     @property
@@ -145,17 +178,41 @@ class ParsedNodeMandatory(
 
 
 @dataclass
-class ParsedNodeDefaults(ParsedNodeMandatory):
+class NodeInfoMixin():
+    _event_status: Dict[str, Any] = field(default_factory=dict)
+
+    @property
+    def node_info(self):
+        node_info = {
+            "node_path": getattr(self, 'path', None),
+            "node_name": getattr(self, 'name', None),
+            "unique_id": getattr(self, 'unique_id', None),
+            "resource_type": str(getattr(self, 'resource_type', '')),
+            "materialized": self.config.get('materialized'),
+            "node_status": str(self._event_status.get('node_status')),
+            "node_started_at": self._event_status.get("started_at"),
+            "node_finished_at": self._event_status.get("finished_at")
+        }
+        return node_info
+
+
+@dataclass
+class ParsedNodeDefaults(NodeInfoMixin, ParsedNodeMandatory):
     tags: List[str] = field(default_factory=list)
     refs: List[List[str]] = field(default_factory=list)
-    sources: List[List[Any]] = field(default_factory=list)
+    sources: List[List[str]] = field(default_factory=list)
     depends_on: DependsOn = field(default_factory=DependsOn)
     description: str = field(default='')
     columns: Dict[str, ColumnInfo] = field(default_factory=dict)
     meta: Dict[str, Any] = field(default_factory=dict)
     docs: Docs = field(default_factory=Docs)
     patch_path: Optional[str] = None
+    compiled_path: Optional[str] = None
     build_path: Optional[str] = None
+    deferred: bool = False
+    unrendered_config: Dict[str, Any] = field(default_factory=dict)
+    created_at: float = field(default_factory=lambda: time.time())
+    config_call_dict: Dict[str, Any] = field(default_factory=dict)
 
     def write_node(self, target_path: str, subdirectory: str, payload: str):
         if (os.path.basename(self.path) ==
@@ -173,9 +230,119 @@ class ParsedNodeDefaults(ParsedNodeMandatory):
         return full_path
 
 
+T = TypeVar('T', bound='ParsedNode')
+
+
 @dataclass
-class ParsedNode(ParsedNodeDefaults, ParsedNodeMixins):
-    pass
+class ParsedNode(ParsedNodeDefaults, ParsedNodeMixins, SerializableType):
+
+    def _serialize(self):
+        return self.to_dict()
+
+    def __post_serialize__(self, dct):
+        if 'config_call_dict' in dct:
+            del dct['config_call_dict']
+        if '_event_status' in dct:
+            del dct['_event_status']
+        return dct
+
+    @classmethod
+    def _deserialize(cls, dct: Dict[str, int]):
+        # The serialized ParsedNodes do not differ from each other
+        # in fields that would allow 'from_dict' to distinguis
+        # between them.
+        resource_type = dct['resource_type']
+        if resource_type == 'model':
+            return ParsedModelNode.from_dict(dct)
+        elif resource_type == 'analysis':
+            return ParsedAnalysisNode.from_dict(dct)
+        elif resource_type == 'seed':
+            return ParsedSeedNode.from_dict(dct)
+        elif resource_type == 'rpc':
+            return ParsedRPCNode.from_dict(dct)
+        elif resource_type == 'sql':
+            return ParsedSqlNode.from_dict(dct)
+        elif resource_type == 'test':
+            if 'test_metadata' in dct:
+                return ParsedGenericTestNode.from_dict(dct)
+            else:
+                return ParsedSingularTestNode.from_dict(dct)
+        elif resource_type == 'operation':
+            return ParsedHookNode.from_dict(dct)
+        elif resource_type == 'seed':
+            return ParsedSeedNode.from_dict(dct)
+        elif resource_type == 'snapshot':
+            return ParsedSnapshotNode.from_dict(dct)
+        else:
+            return cls.from_dict(dct)
+
+    def _persist_column_docs(self) -> bool:
+        if hasattr(self.config, 'persist_docs'):
+            assert isinstance(self.config, NodeConfig)
+            return bool(self.config.persist_docs.get('columns'))
+        return False
+
+    def _persist_relation_docs(self) -> bool:
+        if hasattr(self.config, 'persist_docs'):
+            assert isinstance(self.config, NodeConfig)
+            return bool(self.config.persist_docs.get('relation'))
+        return False
+
+    def same_body(self: T, other: T) -> bool:
+        return self.raw_sql == other.raw_sql
+
+    def same_persisted_description(self: T, other: T) -> bool:
+        # the check on configs will handle the case where we have different
+        # persist settings, so we only have to care about the cases where they
+        # are the same..
+        if self._persist_relation_docs():
+            if self.description != other.description:
+                return False
+
+        if self._persist_column_docs():
+            # assert other._persist_column_docs()
+            column_descriptions = {
+                k: v.description for k, v in self.columns.items()
+            }
+            other_column_descriptions = {
+                k: v.description for k, v in other.columns.items()
+            }
+            if column_descriptions != other_column_descriptions:
+                return False
+
+        return True
+
+    def same_database_representation(self, other: T) -> bool:
+        # compare the config representation, not the node's config value. This
+        # compares the configured value, rather than the ultimate value (so
+        # generate_*_name and unset values derived from the target are
+        # ignored)
+        keys = ('database', 'schema', 'alias')
+        for key in keys:
+            mine = self.unrendered_config.get(key)
+            others = other.unrendered_config.get(key)
+            if mine != others:
+                return False
+        return True
+
+    def same_config(self, old: T) -> bool:
+        return self.config.same_contents(
+            self.unrendered_config,
+            old.unrendered_config,
+        )
+
+    def same_contents(self: T, old: Optional[T]) -> bool:
+        if old is None:
+            return False
+
+        return (
+            self.same_body(old) and
+            self.same_config(old) and
+            self.same_persisted_description(old) and
+            self.same_fqn(old) and
+            self.same_database_representation(old) and
+            True
+        )
 
 
 @dataclass
@@ -196,13 +363,58 @@ class ParsedModelNode(ParsedNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Model]})
 
 
+# TODO: rm?
 @dataclass
 class ParsedRPCNode(ParsedNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.RPCCall]})
 
 
+@dataclass
+class ParsedSqlNode(ParsedNode):
+    resource_type: NodeType = field(metadata={'restrict': [NodeType.SqlOperation]})
+
+
+def same_seeds(first: ParsedNode, second: ParsedNode) -> bool:
+    # for seeds, we check the hashes. If the hashes are different types,
+    # no match. If the hashes are both the same 'path', log a warning and
+    # assume they are the same
+    # if the current checksum is a path, we want to log a warning.
+    result = first.checksum == second.checksum
+
+    if first.checksum.name == 'path':
+        msg: str
+        if second.checksum.name != 'path':
+            msg = (
+                f'Found a seed ({first.package_name}.{first.name}) '
+                f'>{MAXIMUM_SEED_SIZE_NAME} in size. The previous file was '
+                f'<={MAXIMUM_SEED_SIZE_NAME}, so it has changed'
+            )
+        elif result:
+            msg = (
+                f'Found a seed ({first.package_name}.{first.name}) '
+                f'>{MAXIMUM_SEED_SIZE_NAME} in size at the same path, dbt '
+                f'cannot tell if it has changed: assuming they are the same'
+            )
+        elif not result:
+            msg = (
+                f'Found a seed ({first.package_name}.{first.name}) '
+                f'>{MAXIMUM_SEED_SIZE_NAME} in size. The previous file was in '
+                f'a different location, assuming it has changed'
+            )
+        else:
+            msg = (
+                f'Found a seed ({first.package_name}.{first.name}) '
+                f'>{MAXIMUM_SEED_SIZE_NAME} in size. The previous file had a '
+                f'checksum type of {second.checksum.name}, so it has changed'
+            )
+        warn_or_error(msg, node=first)
+
+    return result
+
+
 @dataclass
 class ParsedSeedNode(ParsedNode):
+    # keep this in sync with CompiledSeedNode!
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Seed]})
     config: SeedConfig = field(default_factory=SeedConfig)
 
@@ -211,30 +423,60 @@ class ParsedSeedNode(ParsedNode):
         """ Seeds are never empty"""
         return False
 
+    def same_body(self: T, other: T) -> bool:
+        return same_seeds(self, other)
+
 
 @dataclass
-class TestMetadata(JsonSchemaMixin):
-    namespace: Optional[str]
+class TestMetadata(dbtClassMixin, Replaceable):
     name: str
-    kwargs: Dict[str, Any]
+    # kwargs are the args that are left in the test builder after
+    # removing configs. They are set from the test builder when
+    # the test node is created.
+    kwargs: Dict[str, Any] = field(default_factory=dict)
+    namespace: Optional[str] = None
 
 
 @dataclass
-class HasTestMetadata(JsonSchemaMixin):
+class HasTestMetadata(dbtClassMixin):
     test_metadata: TestMetadata
 
 
 @dataclass
-class ParsedDataTestNode(ParsedNode):
+class ParsedSingularTestNode(ParsedNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Test]})
-    config: TestConfig = field(default_factory=TestConfig)
+    # Was not able to make mypy happy and keep the code working. We need to
+    # refactor the various configs.
+    config: TestConfig = field(default_factory=TestConfig)  # type: ignore
+
+    @property
+    def test_node_type(self):
+        return 'singular'
 
 
 @dataclass
-class ParsedSchemaTestNode(ParsedNode, HasTestMetadata):
+class ParsedGenericTestNode(ParsedNode, HasTestMetadata):
+    # keep this in sync with CompiledGenericTestNode!
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Test]})
     column_name: Optional[str] = None
-    config: TestConfig = field(default_factory=TestConfig)
+    file_key_name: Optional[str] = None
+    # Was not able to make mypy happy and keep the code working. We need to
+    # refactor the various configs.
+    config: TestConfig = field(default_factory=TestConfig)  # type: ignore
+
+    def same_contents(self, other) -> bool:
+        if other is None:
+            return False
+
+        return (
+            self.same_config(other) and
+            self.same_fqn(other) and
+            True
+        )
+
+    @property
+    def test_node_type(self):
+        return 'generic'
 
 
 @dataclass
@@ -252,7 +494,7 @@ class IntermediateSnapshotNode(ParsedNode):
 @dataclass
 class ParsedSnapshotNode(ParsedNode):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Snapshot]})
-    config: SnapshotVariants
+    config: SnapshotConfig
 
 
 @dataclass
@@ -261,6 +503,7 @@ class ParsedPatch(HasYamlMetadata, Replaceable):
     description: str
     meta: Dict[str, Any]
     docs: Docs
+    config: Dict[str, Any]
 
 
 # The parsed node update is only the 'patch', not the test. The test became a
@@ -287,20 +530,25 @@ class ParsedMacro(UnparsedBaseNode, HasUniqueID):
     depends_on: MacroDependsOn = field(default_factory=MacroDependsOn)
     description: str = ''
     meta: Dict[str, Any] = field(default_factory=dict)
+    docs: Docs = field(default_factory=Docs)
     patch_path: Optional[str] = None
     arguments: List[MacroArgument] = field(default_factory=list)
-
-    def local_vars(self):
-        return {}
+    created_at: float = field(default_factory=lambda: time.time())
 
     def patch(self, patch: ParsedMacroPatch):
-        self.patch_path: Optional[str] = patch.original_file_path
+        self.patch_path: Optional[str] = patch.file_id
         self.description = patch.description
+        self.created_at = time.time()
         self.meta = patch.meta
+        self.docs = patch.docs
         self.arguments = patch.arguments
-        if dbt.flags.STRICT_MODE:
-            assert isinstance(self, JsonSchemaMixin)
-            self.to_dict(validate=True)
+
+    def same_contents(self, other: Optional['ParsedMacro']) -> bool:
+        if other is None:
+            return False
+        # the only thing that makes one macro different from another with the
+        # same name/package is its content
+        return self.macro_sql == other.macro_sql
 
 
 @dataclass
@@ -312,6 +560,13 @@ class ParsedDocumentation(UnparsedDocumentation, HasUniqueID):
     def search_name(self):
         return self.name
 
+    def same_contents(self, other: Optional['ParsedDocumentation']) -> bool:
+        if other is None:
+            return False
+        # the only thing that makes one doc different from another with the
+        # same name/package is its content
+        return self.block_contents == other.block_contents
+
 
 def normalize_test(testdef: TestDef) -> Dict[str, Any]:
     if isinstance(testdef, str):
@@ -373,11 +628,11 @@ class UnpatchedSourceDefinition(UnparsedBaseNode, HasUniqueID, HasFqn):
 
 
 @dataclass
-class ParsedSourceDefinition(
+class ParsedSourceMandatory(
     UnparsedBaseNode,
     HasUniqueID,
     HasRelationMetadata,
-    HasFqn
+    HasFqn,
 ):
     name: str
     source_name: str
@@ -385,6 +640,13 @@ class ParsedSourceDefinition(
     loader: str
     identifier: str
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Source]})
+
+
+@dataclass
+class ParsedSourceDefinition(
+    NodeInfoMixin,
+    ParsedSourceMandatory
+):
     quoting: Quoting = field(default_factory=Quoting)
     loaded_at_field: Optional[str] = None
     freshness: Optional[FreshnessThreshold] = None
@@ -396,6 +658,66 @@ class ParsedSourceDefinition(
     tags: List[str] = field(default_factory=list)
     config: SourceConfig = field(default_factory=SourceConfig)
     patch_path: Optional[Path] = None
+    unrendered_config: Dict[str, Any] = field(default_factory=dict)
+    relation_name: Optional[str] = None
+    created_at: float = field(default_factory=lambda: time.time())
+
+    def __post_serialize__(self, dct):
+        if '_event_status' in dct:
+            del dct['_event_status']
+        return dct
+
+    def same_database_representation(
+        self, other: 'ParsedSourceDefinition'
+    ) -> bool:
+        return (
+            self.database == other.database and
+            self.schema == other.schema and
+            self.identifier == other.identifier and
+            True
+        )
+
+    def same_quoting(self, other: 'ParsedSourceDefinition') -> bool:
+        return self.quoting == other.quoting
+
+    def same_freshness(self, other: 'ParsedSourceDefinition') -> bool:
+        return (
+            self.freshness == other.freshness and
+            self.loaded_at_field == other.loaded_at_field and
+            True
+        )
+
+    def same_external(self, other: 'ParsedSourceDefinition') -> bool:
+        return self.external == other.external
+
+    def same_config(self, old: 'ParsedSourceDefinition') -> bool:
+        return self.config.same_contents(
+            self.unrendered_config,
+            old.unrendered_config,
+        )
+
+    def same_contents(self, old: Optional['ParsedSourceDefinition']) -> bool:
+        # existing when it didn't before is a change!
+        if old is None:
+            return True
+
+        # config changes are changes (because the only config is "enabled", and
+        # enabling a source is a change!)
+        # changing the database/schema/identifier is a change
+        # messing around with external stuff is a change (uh, right?)
+        # quoting changes are changes
+        # freshness changes are changes, I guess
+        # metadata/tags changes are not "changes"
+        # patching/description changes are not "changes"
+        return (
+            self.same_database_representation(old) and
+            self.same_fqn(old) and
+            self.same_config(old) and
+            self.same_quoting(old) and
+            self.same_freshness(old) and
+            self.same_external(old) and
+            True
+        )
 
     def get_full_source_name(self):
         return f'{self.source_name}_{self.name}'
@@ -419,6 +741,10 @@ class ParsedSourceDefinition(
     def depends_on_nodes(self):
         return []
 
+    @property
+    def depends_on(self):
+        return DependsOn(macros=[], nodes=[])
+
     @property
     def refs(self):
         return []
@@ -436,6 +762,159 @@ class ParsedSourceDefinition(
         return f'{self.source_name}.{self.name}'
 
 
-ParsedResource = Union[
-    ParsedMacro, ParsedNode, ParsedDocumentation, ParsedSourceDefinition
+@dataclass
+class ParsedExposure(UnparsedBaseNode, HasUniqueID, HasFqn):
+    name: str
+    type: ExposureType
+    owner: ExposureOwner
+    resource_type: NodeType = NodeType.Exposure
+    description: str = ''
+    maturity: Optional[MaturityType] = None
+    meta: Dict[str, Any] = field(default_factory=dict)
+    tags: List[str] = field(default_factory=list)
+    url: Optional[str] = None
+    depends_on: DependsOn = field(default_factory=DependsOn)
+    refs: List[List[str]] = field(default_factory=list)
+    sources: List[List[str]] = field(default_factory=list)
+    created_at: float = field(default_factory=lambda: time.time())
+
+    @property
+    def depends_on_nodes(self):
+        return self.depends_on.nodes
+
+    @property
+    def search_name(self):
+        return self.name
+
+    def same_depends_on(self, old: 'ParsedExposure') -> bool:
+        return set(self.depends_on.nodes) == set(old.depends_on.nodes)
+
+    def same_description(self, old: 'ParsedExposure') -> bool:
+        return self.description == old.description
+
+    def same_maturity(self, old: 'ParsedExposure') -> bool:
+        return self.maturity == old.maturity
+
+    def same_owner(self, old: 'ParsedExposure') -> bool:
+        return self.owner == old.owner
+
+    def same_exposure_type(self, old: 'ParsedExposure') -> bool:
+        return self.type == old.type
+
+    def same_url(self, old: 'ParsedExposure') -> bool:
+        return self.url == old.url
+
+    def same_contents(self, old: Optional['ParsedExposure']) -> bool:
+        # existing when it didn't before is a change!
+        # metadata/tags changes are not "changes"
+        if old is None:
+            return True
+
+        return (
+            self.same_fqn(old) and
+            self.same_exposure_type(old) and
+            self.same_owner(old) and
+            self.same_maturity(old) and
+            self.same_url(old) and
+            self.same_description(old) and
+            self.same_depends_on(old) and
+            True
+        )
+
+
+@dataclass
+class ParsedMetric(UnparsedBaseNode, HasUniqueID, HasFqn):
+    model: str
+    name: str
+    description: str
+    label: str
+    type: str
+    sql: Optional[str]
+    timestamp: Optional[str]
+    filters: List[MetricFilter]
+    time_grains: List[str]
+    dimensions: List[str]
+    resource_type: NodeType = NodeType.Metric
+    meta: Dict[str, Any] = field(default_factory=dict)
+    tags: List[str] = field(default_factory=list)
+    sources: List[List[str]] = field(default_factory=list)
+    depends_on: DependsOn = field(default_factory=DependsOn)
+    refs: List[List[str]] = field(default_factory=list)
+    created_at: float = field(default_factory=lambda: time.time())
+
+    @property
+    def depends_on_nodes(self):
+        return self.depends_on.nodes
+
+    @property
+    def search_name(self):
+        return self.name
+
+    def same_model(self, old: 'ParsedMetric') -> bool:
+        return self.model == old.model
+
+    def same_dimensions(self, old: 'ParsedMetric') -> bool:
+        return self.dimensions == old.dimensions
+
+    def same_filters(self, old: 'ParsedMetric') -> bool:
+        return self.filters == old.filters
+
+    def same_description(self, old: 'ParsedMetric') -> bool:
+        return self.description == old.description
+
+    def same_label(self, old: 'ParsedMetric') -> bool:
+        return self.label == old.label
+
+    def same_type(self, old: 'ParsedMetric') -> bool:
+        return self.type == old.type
+
+    def same_sql(self, old: 'ParsedMetric') -> bool:
+        return self.sql == old.sql
+
+    def same_timestamp(self, old: 'ParsedMetric') -> bool:
+        return self.timestamp == old.timestamp
+
+    def same_time_grains(self, old: 'ParsedMetric') -> bool:
+        return self.time_grains == old.time_grains
+
+    def same_contents(self, old: Optional['ParsedMetric']) -> bool:
+        # existing when it didn't before is a change!
+        # metadata/tags changes are not "changes"
+        if old is None:
+            return True
+
+        return (
+            self.same_model(old) and
+            self.same_dimensions(old) and
+            self.same_filters(old) and
+            self.same_description(old) and
+            self.same_label(old) and
+            self.same_type(old) and
+            self.same_sql(old) and
+            self.same_timestamp(old) and
+            self.same_time_grains(old) and
+            True
+        )
+
+
+ManifestNodes = Union[
+    ParsedAnalysisNode,
+    ParsedSingularTestNode,
+    ParsedHookNode,
+    ParsedModelNode,
+    ParsedRPCNode,
+    ParsedSqlNode,
+    ParsedGenericTestNode,
+    ParsedSeedNode,
+    ParsedSnapshotNode,
+]
+
+
+ParsedResource = Union[
+    ParsedDocumentation,
+    ParsedMacro,
+    ParsedNode,
+    ParsedExposure,
+    ParsedMetric,
+    ParsedSourceDefinition,
 ]

core/dbt/contracts/graph/unparsed.py

@@ -1,11 +1,16 @@
 from dbt.node_types import NodeType
-from dbt.contracts.util import Replaceable, Mergeable
+from dbt.contracts.util import (
+    AdditionalPropertiesMixin,
+    Mergeable,
+    Replaceable,
+)
 # trigger the PathEncoder
 import dbt.helper_types  # noqa:F401
 from dbt.exceptions import CompilationException
 
-from hologram import JsonSchemaMixin
-from hologram.helpers import StrEnum, ExtensibleJsonSchemaMixin
+from dbt.dataclass_schema import (
+    dbtClassMixin, StrEnum, ExtensibleDbtClassMixin
+)
 
 from dataclasses import dataclass, field
 from datetime import timedelta
@@ -14,12 +19,16 @@ from typing import Optional, List, Union, Dict, Any, Sequence
 
 
 @dataclass
-class UnparsedBaseNode(JsonSchemaMixin, Replaceable):
+class UnparsedBaseNode(dbtClassMixin, Replaceable):
     package_name: str
     root_path: str
     path: str
     original_file_path: str
 
+    @property
+    def file_id(self):
+        return f'{self.package_name}://{self.original_file_path}'
+
 
 @dataclass
 class HasSQL:
@@ -35,6 +44,11 @@ class UnparsedMacro(UnparsedBaseNode, HasSQL):
     resource_type: NodeType = field(metadata={'restrict': [NodeType.Macro]})
 
 
+@dataclass
+class UnparsedGenericTest(UnparsedBaseNode, HasSQL):
+    resource_type: NodeType = field(metadata={'restrict': [NodeType.Macro]})
+
+
 @dataclass
 class UnparsedNode(UnparsedBaseNode, HasSQL):
     name: str
@@ -46,6 +60,7 @@ class UnparsedNode(UnparsedBaseNode, HasSQL):
         NodeType.Operation,
         NodeType.Seed,
         NodeType.RPCCall,
+        NodeType.SqlOperation,
     ]})
 
     @property
@@ -62,17 +77,19 @@ class UnparsedRunHook(UnparsedNode):
 
 
 @dataclass
-class Docs(JsonSchemaMixin, Replaceable):
+class Docs(dbtClassMixin, Replaceable):
     show: bool = True
 
 
 @dataclass
-class HasDocs(JsonSchemaMixin, Replaceable):
+class HasDocs(AdditionalPropertiesMixin, ExtensibleDbtClassMixin,
+              Replaceable):
     name: str
     description: str = ''
     meta: Dict[str, Any] = field(default_factory=dict)
     data_type: Optional[str] = None
     docs: Docs = field(default_factory=Docs)
+    _extra: Dict[str, Any] = field(default_factory=dict)
 
 
 TestDef = Union[Dict[str, Any], str]
@@ -94,7 +111,7 @@ class UnparsedColumn(HasTests):
 
 
 @dataclass
-class HasColumnDocs(JsonSchemaMixin, Replaceable):
+class HasColumnDocs(dbtClassMixin, Replaceable):
     columns: Sequence[HasDocs] = field(default_factory=list)
 
 
@@ -104,31 +121,40 @@ class HasColumnTests(HasColumnDocs):
 
 
 @dataclass
-class HasYamlMetadata(JsonSchemaMixin):
+class HasYamlMetadata(dbtClassMixin):
     original_file_path: str
     yaml_key: str
     package_name: str
 
+    @property
+    def file_id(self):
+        return f'{self.package_name}://{self.original_file_path}'
+
 
 @dataclass
-class UnparsedAnalysisUpdate(HasColumnDocs, HasDocs, HasYamlMetadata):
+class HasConfig():
+    config: Dict[str, Any] = field(default_factory=dict)
+
+
+@dataclass
+class UnparsedAnalysisUpdate(HasConfig, HasColumnDocs, HasDocs, HasYamlMetadata):
     pass
 
 
 @dataclass
-class UnparsedNodeUpdate(HasColumnTests, HasTests, HasYamlMetadata):
+class UnparsedNodeUpdate(HasConfig, HasColumnTests, HasTests, HasYamlMetadata):
     quote_columns: Optional[bool] = None
 
 
 @dataclass
-class MacroArgument(JsonSchemaMixin):
+class MacroArgument(dbtClassMixin):
     name: str
     type: Optional[str] = None
     description: str = ''
 
 
 @dataclass
-class UnparsedMacroUpdate(HasDocs, HasYamlMetadata):
+class UnparsedMacroUpdate(HasConfig, HasDocs, HasYamlMetadata):
     arguments: List[MacroArgument] = field(default_factory=list)
 
 
@@ -142,29 +168,29 @@ class TimePeriod(StrEnum):
 
 
 @dataclass
-class Time(JsonSchemaMixin, Replaceable):
-    count: int
-    period: TimePeriod
+class Time(dbtClassMixin, Mergeable):
+    count: Optional[int] = None
+    period: Optional[TimePeriod] = None
 
     def exceeded(self, actual_age: float) -> bool:
-        kwargs = {self.period.plural(): self.count}
+        if self.period is None or self.count is None:
+            return False
+        kwargs: Dict[str, int] = {self.period.plural(): self.count}
         difference = timedelta(**kwargs).total_seconds()
         return actual_age > difference
 
-
-class FreshnessStatus(StrEnum):
-    Pass = 'pass'
-    Warn = 'warn'
-    Error = 'error'
+    def __bool__(self):
+        return self.count is not None and self.period is not None
 
 
 @dataclass
-class FreshnessThreshold(JsonSchemaMixin, Mergeable):
-    warn_after: Optional[Time] = None
-    error_after: Optional[Time] = None
+class FreshnessThreshold(dbtClassMixin, Mergeable):
+    warn_after: Optional[Time] = field(default_factory=Time)
+    error_after: Optional[Time] = field(default_factory=Time)
     filter: Optional[str] = None
 
-    def status(self, age: float) -> FreshnessStatus:
+    def status(self, age: float) -> "dbt.contracts.results.FreshnessStatus":
+        from dbt.contracts.results import FreshnessStatus
         if self.error_after and self.error_after.exceeded(age):
             return FreshnessStatus.Error
         elif self.warn_after and self.warn_after.exceeded(age):
@@ -173,36 +199,16 @@ class FreshnessThreshold(JsonSchemaMixin, Mergeable):
             return FreshnessStatus.Pass
 
     def __bool__(self):
-        return self.warn_after is not None or self.error_after is not None
+        return bool(self.warn_after) or bool(self.error_after)
 
 
 @dataclass
-class AdditionalPropertiesAllowed(ExtensibleJsonSchemaMixin):
+class AdditionalPropertiesAllowed(
+    AdditionalPropertiesMixin,
+    ExtensibleDbtClassMixin
+):
     _extra: Dict[str, Any] = field(default_factory=dict)
 
-    @property
-    def extra(self):
-        return self._extra
-
-    @classmethod
-    def from_dict(cls, data, validate=True):
-        self = super().from_dict(data=data, validate=validate)
-        keys = self.to_dict(validate=False, omit_none=False)
-        for key, value in data.items():
-            if key not in keys:
-                self._extra[key] = value
-        return self
-
-    def to_dict(self, omit_none=True, validate=False):
-        data = super().to_dict(omit_none=omit_none, validate=validate)
-        data.update(self._extra)
-        return data
-
-    def replace(self, **kwargs):
-        dct = self.to_dict(omit_none=False, validate=False)
-        dct.update(kwargs)
-        return self.from_dict(dct)
-
 
 @dataclass
 class ExternalPartition(AdditionalPropertiesAllowed, Replaceable):
@@ -231,7 +237,7 @@ class ExternalTable(AdditionalPropertiesAllowed, Mergeable):
 
 
 @dataclass
-class Quoting(JsonSchemaMixin, Mergeable):
+class Quoting(dbtClassMixin, Mergeable):
     database: Optional[bool] = None
     schema: Optional[bool] = None
     identifier: Optional[bool] = None
@@ -249,15 +255,15 @@ class UnparsedSourceTableDefinition(HasColumnTests, HasTests):
     external: Optional[ExternalTable] = None
     tags: List[str] = field(default_factory=list)
 
-    def to_dict(self, omit_none=True, validate=False):
-        result = super().to_dict(omit_none=omit_none, validate=validate)
-        if omit_none and self.freshness is None:
-            result['freshness'] = None
-        return result
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        if 'freshness' not in dct and self.freshness is None:
+            dct['freshness'] = None
+        return dct
 
 
 @dataclass
-class UnparsedSourceDefinition(JsonSchemaMixin, Replaceable):
+class UnparsedSourceDefinition(dbtClassMixin, Replaceable):
     name: str
     description: str = ''
     meta: Dict[str, Any] = field(default_factory=dict)
@@ -271,20 +277,21 @@ class UnparsedSourceDefinition(JsonSchemaMixin, Replaceable):
     loaded_at_field: Optional[str] = None
     tables: List[UnparsedSourceTableDefinition] = field(default_factory=list)
     tags: List[str] = field(default_factory=list)
+    config: Dict[str, Any] = field(default_factory=dict)
 
     @property
     def yaml_key(self) -> 'str':
         return 'sources'
 
-    def to_dict(self, omit_none=True, validate=False):
-        result = super().to_dict(omit_none=omit_none, validate=validate)
-        if omit_none and self.freshness is None:
-            result['freshness'] = None
-        return result
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        if 'freshness' not in dct and self.freshness is None:
+            dct['freshness'] = None
+        return dct
 
 
 @dataclass
-class SourceTablePatch(JsonSchemaMixin):
+class SourceTablePatch(dbtClassMixin):
     name: str
     description: Optional[str] = None
     meta: Optional[Dict[str, Any]] = None
@@ -315,7 +322,7 @@ class SourceTablePatch(JsonSchemaMixin):
 
 
 @dataclass
-class SourcePatch(JsonSchemaMixin, Replaceable):
+class SourcePatch(dbtClassMixin, Replaceable):
     name: str = field(
         metadata=dict(description='The name of the source to override'),
     )
@@ -359,12 +366,16 @@ class SourcePatch(JsonSchemaMixin, Replaceable):
 
 
 @dataclass
-class UnparsedDocumentation(JsonSchemaMixin, Replaceable):
+class UnparsedDocumentation(dbtClassMixin, Replaceable):
     package_name: str
     root_path: str
     path: str
     original_file_path: str
 
+    @property
+    def file_id(self):
+        return f'{self.package_name}://{self.original_file_path}'
+
     @property
     def resource_type(self):
         return NodeType.Documentation
@@ -373,3 +384,89 @@ class UnparsedDocumentation(JsonSchemaMixin, Replaceable):
 @dataclass
 class UnparsedDocumentationFile(UnparsedDocumentation):
     file_contents: str
+
+
+# can't use total_ordering decorator here, as str provides an ordering already
+# and it's not the one we want.
+class Maturity(StrEnum):
+    low = 'low'
+    medium = 'medium'
+    high = 'high'
+
+    def __lt__(self, other):
+        if not isinstance(other, Maturity):
+            return NotImplemented
+        order = (Maturity.low, Maturity.medium, Maturity.high)
+        return order.index(self) < order.index(other)
+
+    def __gt__(self, other):
+        if not isinstance(other, Maturity):
+            return NotImplemented
+        return self != other and not (self < other)
+
+    def __ge__(self, other):
+        if not isinstance(other, Maturity):
+            return NotImplemented
+        return self == other or not (self < other)
+
+    def __le__(self, other):
+        if not isinstance(other, Maturity):
+            return NotImplemented
+        return self == other or self < other
+
+
+class ExposureType(StrEnum):
+    Dashboard = 'dashboard'
+    Notebook = 'notebook'
+    Analysis = 'analysis'
+    ML = 'ml'
+    Application = 'application'
+
+
+class MaturityType(StrEnum):
+    Low = 'low'
+    Medium = 'medium'
+    High = 'high'
+
+
+@dataclass
+class ExposureOwner(dbtClassMixin, Replaceable):
+    email: str
+    name: Optional[str] = None
+
+
+@dataclass
+class UnparsedExposure(dbtClassMixin, Replaceable):
+    name: str
+    type: ExposureType
+    owner: ExposureOwner
+    description: str = ''
+    maturity: Optional[MaturityType] = None
+    meta: Dict[str, Any] = field(default_factory=dict)
+    tags: List[str] = field(default_factory=list)
+    url: Optional[str] = None
+    depends_on: List[str] = field(default_factory=list)
+
+
+@dataclass
+class MetricFilter(dbtClassMixin, Replaceable):
+    field: str
+    operator: str
+    # TODO : Can we make this Any?
+    value: str
+
+
+@dataclass
+class UnparsedMetric(dbtClassMixin, Replaceable):
+    model: str
+    name: str
+    label: str
+    type: str
+    description: str = ''
+    sql: Optional[str] = None
+    timestamp: Optional[str] = None
+    time_grains: List[str] = field(default_factory=list)
+    dimensions: List[str] = field(default_factory=list)
+    filters: List[MetricFilter] = field(default_factory=list)
+    meta: Dict[str, Any] = field(default_factory=dict)
+    tags: List[str] = field(default_factory=list)

core/dbt/contracts/project.py

@@ -1,29 +1,51 @@
 from dbt.contracts.util import Replaceable, Mergeable, list_str
-from dbt.contracts.connection import UserConfigContract, QueryComment
+from dbt.contracts.connection import QueryComment, UserConfigContract
 from dbt.helper_types import NoValue
-from dbt.logger import GLOBAL_LOGGER as logger  # noqa
-from dbt import tracking
-from dbt.ui import printer
-
-from hologram import JsonSchemaMixin, ValidationError
-from hologram.helpers import HyphenatedJsonSchemaMixin, register_pattern, \
-    ExtensibleJsonSchemaMixin
-
+from dbt.dataclass_schema import (
+    dbtClassMixin, ValidationError,
+    HyphenatedDbtClassMixin,
+    ExtensibleDbtClassMixin,
+    register_pattern, ValidatedStringMixin
+)
 from dataclasses import dataclass, field
-from typing import Optional, List, Dict, Union, Any, NewType
+from typing import Optional, List, Dict, Union, Any
+from mashumaro.types import SerializableType
 
-PIN_PACKAGE_URL = 'https://docs.getdbt.com/docs/package-management#section-specifying-package-versions' # noqa
+PIN_PACKAGE_URL = 'https://docs.getdbt.com/docs/package-management#section-specifying-package-versions'  # noqa
 DEFAULT_SEND_ANONYMOUS_USAGE_STATS = True
-DEFAULT_USE_COLORS = True
 
 
-Name = NewType('Name', str)
+class Name(ValidatedStringMixin):
+    ValidationRegex = r'^[^\d\W]\w*$'
+
+    @classmethod
+    def is_valid(cls, value: Any) -> bool:
+        if not isinstance(value, str):
+            return False
+
+        try:
+            cls.validate(value)
+        except ValidationError:
+            return False
+
+        return True
+
+
 register_pattern(Name, r'^[^\d\W]\w*$')
 
+
+class SemverString(str, SerializableType):
+    def _serialize(self) -> str:
+        return self
+
+    @classmethod
+    def _deserialize(cls, value: str) -> 'SemverString':
+        return SemverString(value)
+
+
 # this does not support the full semver (does not allow a trailing -fooXYZ) and
 # is not restrictive enough for full semver, (allows '1.0'). But it's like
 # 'semver lite'.
-SemverString = NewType('SemverString', str)
 register_pattern(
     SemverString,
     r'^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)(\.(?:0|[1-9]\d*))?$',
@@ -31,15 +53,15 @@ register_pattern(
 
 
 @dataclass
-class Quoting(JsonSchemaMixin, Mergeable):
-    identifier: Optional[bool]
-    schema: Optional[bool]
-    database: Optional[bool]
-    project: Optional[bool]
+class Quoting(dbtClassMixin, Mergeable):
+    schema: Optional[bool] = None
+    database: Optional[bool] = None
+    project: Optional[bool] = None
+    identifier: Optional[bool] = None
 
 
 @dataclass
-class Package(Replaceable, HyphenatedJsonSchemaMixin):
+class Package(Replaceable, HyphenatedDbtClassMixin):
     pass
 
 
@@ -55,8 +77,9 @@ RawVersion = Union[str, float]
 @dataclass
 class GitPackage(Package):
     git: str
-    revision: Optional[RawVersion]
+    revision: Optional[RawVersion] = None
     warn_unpinned: Optional[bool] = None
+    subdirectory: Optional[str] = None
 
     def get_revisions(self) -> List[str]:
         if self.revision is None:
@@ -69,6 +92,7 @@ class GitPackage(Package):
 class RegistryPackage(Package):
     package: str
     version: Union[RawVersion, List[RawVersion]]
+    install_prerelease: Optional[bool] = False
 
     def get_versions(self) -> List[str]:
         if isinstance(self.version, list):
@@ -81,7 +105,7 @@ PackageSpec = Union[LocalPackage, GitPackage, RegistryPackage]
 
 
 @dataclass
-class PackageConfig(JsonSchemaMixin, Replaceable):
+class PackageConfig(dbtClassMixin, Replaceable):
     packages: List[PackageSpec]
 
 
@@ -97,13 +121,13 @@ class ProjectPackageMetadata:
 
 
 @dataclass
-class Downloads(ExtensibleJsonSchemaMixin, Replaceable):
+class Downloads(ExtensibleDbtClassMixin, Replaceable):
     tarball: str
 
 
 @dataclass
 class RegistryPackageMetadata(
-    ExtensibleJsonSchemaMixin,
+    ExtensibleDbtClassMixin,
     ProjectPackageMetadata,
 ):
     downloads: Downloads
@@ -143,6 +167,7 @@ BANNED_PROJECT_NAMES = {
     'sql',
     'sql_now',
     'store_result',
+    'store_raw_result',
     'target',
     'this',
     'tojson',
@@ -154,71 +179,37 @@ BANNED_PROJECT_NAMES = {
 
 
 @dataclass
-class ProjectV1(HyphenatedJsonSchemaMixin, Replaceable):
-    name: Name
-    version: Union[SemverString, float]
-    project_root: Optional[str] = None
-    source_paths: Optional[List[str]] = None
-    macro_paths: Optional[List[str]] = None
-    data_paths: Optional[List[str]] = None
-    test_paths: Optional[List[str]] = None
-    analysis_paths: Optional[List[str]] = None
-    docs_paths: Optional[List[str]] = None
-    target_path: Optional[str] = None
-    snapshot_paths: Optional[List[str]] = None
-    clean_targets: Optional[List[str]] = None
-    profile: Optional[str] = None
-    log_path: Optional[str] = None
-    modules_path: Optional[str] = None
-    quoting: Optional[Quoting] = None
-    on_run_start: Optional[List[str]] = field(default_factory=list_str)
-    on_run_end: Optional[List[str]] = field(default_factory=list_str)
-    require_dbt_version: Optional[Union[List[str], str]] = None
-    models: Dict[str, Any] = field(default_factory=dict)
-    seeds: Dict[str, Any] = field(default_factory=dict)
-    snapshots: Dict[str, Any] = field(default_factory=dict)
-    packages: List[PackageSpec] = field(default_factory=list)
-    query_comment: Optional[Union[QueryComment, NoValue, str]] = NoValue()
-    config_version: int = 1
-
-    @classmethod
-    def from_dict(cls, data, validate=True) -> 'ProjectV1':
-        result = super().from_dict(data, validate=validate)
-        if result.name in BANNED_PROJECT_NAMES:
-            raise ValidationError(
-                'Invalid project name: {} is a reserved word'
-                .format(result.name)
-            )
-        return result
-
-
-@dataclass
-class ProjectV2(HyphenatedJsonSchemaMixin, Replaceable):
+class Project(HyphenatedDbtClassMixin, Replaceable):
     name: Name
     version: Union[SemverString, float]
     config_version: int
     project_root: Optional[str] = None
     source_paths: Optional[List[str]] = None
+    model_paths: Optional[List[str]] = None
     macro_paths: Optional[List[str]] = None
     data_paths: Optional[List[str]] = None
+    seed_paths: Optional[List[str]] = None
     test_paths: Optional[List[str]] = None
     analysis_paths: Optional[List[str]] = None
     docs_paths: Optional[List[str]] = None
+    asset_paths: Optional[List[str]] = None
     target_path: Optional[str] = None
     snapshot_paths: Optional[List[str]] = None
     clean_targets: Optional[List[str]] = None
     profile: Optional[str] = None
     log_path: Optional[str] = None
-    modules_path: Optional[str] = None
+    packages_install_path: Optional[str] = None
     quoting: Optional[Quoting] = None
     on_run_start: Optional[List[str]] = field(default_factory=list_str)
     on_run_end: Optional[List[str]] = field(default_factory=list_str)
     require_dbt_version: Optional[Union[List[str], str]] = None
+    dispatch: List[Dict[str, Any]] = field(default_factory=list)
     models: Dict[str, Any] = field(default_factory=dict)
     seeds: Dict[str, Any] = field(default_factory=dict)
     snapshots: Dict[str, Any] = field(default_factory=dict)
     analyses: Dict[str, Any] = field(default_factory=dict)
     sources: Dict[str, Any] = field(default_factory=dict)
+    tests: Dict[str, Any] = field(default_factory=dict)
     vars: Optional[Dict[str, Any]] = field(
         default=None,
         metadata=dict(
@@ -229,56 +220,43 @@ class ProjectV2(HyphenatedJsonSchemaMixin, Replaceable):
     query_comment: Optional[Union[QueryComment, NoValue, str]] = NoValue()
 
     @classmethod
-    def from_dict(cls, data, validate=True) -> 'ProjectV2':
-        result = super().from_dict(data, validate=validate)
-        if result.name in BANNED_PROJECT_NAMES:
+    def validate(cls, data):
+        super().validate(data)
+        if data['name'] in BANNED_PROJECT_NAMES:
             raise ValidationError(
-                f'Invalid project name: {result.name} is a reserved word'
+                f"Invalid project name: {data['name']} is a reserved word"
             )
-
-        return result
-
-
-def parse_project_config(
-    data: Dict[str, Any], validate=True
-) -> Union[ProjectV1, ProjectV2]:
-    config_version = data.get('config-version', 1)
-    if config_version == 1:
-        return ProjectV1.from_dict(data, validate=validate)
-    elif config_version == 2:
-        return ProjectV2.from_dict(data, validate=validate)
-    else:
-        raise ValidationError(
-            f'Got an unexpected config-version={config_version}, expected '
-            f'1 or 2'
-        )
+        # validate dispatch config
+        if 'dispatch' in data and data['dispatch']:
+            entries = data['dispatch']
+            for entry in entries:
+                if ('macro_namespace' not in entry or 'search_order' not in entry or
+                        not isinstance(entry['search_order'], list)):
+                    raise ValidationError(f"Invalid project dispatch config: {entry}")
 
 
 @dataclass
-class UserConfig(ExtensibleJsonSchemaMixin, Replaceable, UserConfigContract):
+class UserConfig(ExtensibleDbtClassMixin, Replaceable, UserConfigContract):
     send_anonymous_usage_stats: bool = DEFAULT_SEND_ANONYMOUS_USAGE_STATS
-    use_colors: bool = DEFAULT_USE_COLORS
+    use_colors: Optional[bool] = None
     partial_parse: Optional[bool] = None
     printer_width: Optional[int] = None
-
-    def set_values(self, cookie_dir):
-        if self.send_anonymous_usage_stats:
-            tracking.initialize_tracking(cookie_dir)
-        else:
-            tracking.do_not_track()
-
-        if self.use_colors:
-            printer.use_colors()
-
-        if self.printer_width:
-            printer.printer_width(self.printer_width)
+    write_json: Optional[bool] = None
+    warn_error: Optional[bool] = None
+    log_format: Optional[str] = None
+    debug: Optional[bool] = None
+    version_check: Optional[bool] = None
+    fail_fast: Optional[bool] = None
+    use_experimental_parser: Optional[bool] = None
+    static_parser: Optional[bool] = None
+    indirect_selection: Optional[str] = None
 
 
 @dataclass
-class ProfileConfig(HyphenatedJsonSchemaMixin, Replaceable):
+class ProfileConfig(HyphenatedDbtClassMixin, Replaceable):
     profile_name: str = field(metadata={'preserve_underscore': True})
     target_name: str = field(metadata={'preserve_underscore': True})
-    config: UserConfig
+    user_config: UserConfig = field(metadata={'preserve_underscore': True})
     threads: int
     # TODO: make this a dynamic union of some kind?
     credentials: Optional[Dict[str, Any]]
@@ -286,14 +264,14 @@ class ProfileConfig(HyphenatedJsonSchemaMixin, Replaceable):
 
 @dataclass
 class ConfiguredQuoting(Quoting, Replaceable):
-    identifier: bool
-    schema: bool
-    database: Optional[bool]
-    project: Optional[bool]
+    identifier: bool = True
+    schema: bool = True
+    database: Optional[bool] = None
+    project: Optional[bool] = None
 
 
 @dataclass
-class Configuration(ProjectV2, ProfileConfig):
+class Configuration(Project, ProfileConfig):
     cli_vars: Dict[str, Any] = field(
         default_factory=dict,
         metadata={'preserve_underscore': True},
@@ -302,5 +280,5 @@ class Configuration(ProjectV2, ProfileConfig):
 
 
 @dataclass
-class ProjectList(JsonSchemaMixin):
-    projects: Dict[str, Union[ProjectV2, ProjectV1]]
+class ProjectList(dbtClassMixin):
+    projects: Dict[str, Project]

core/dbt/contracts/relation.py

@@ -0,0 +1,126 @@
+from collections.abc import Mapping
+from dataclasses import dataclass
+from typing import (
+    Optional, Dict,
+)
+from typing_extensions import Protocol
+
+from dbt.dataclass_schema import dbtClassMixin, StrEnum
+
+from dbt.contracts.util import Replaceable
+from dbt.exceptions import raise_dataclass_not_dict, CompilationException
+from dbt.utils import deep_merge
+
+
+class RelationType(StrEnum):
+    Table = 'table'
+    View = 'view'
+    CTE = 'cte'
+    MaterializedView = 'materializedview'
+    External = 'external'
+
+
+class ComponentName(StrEnum):
+    Database = 'database'
+    Schema = 'schema'
+    Identifier = 'identifier'
+
+
+class HasQuoting(Protocol):
+    quoting: Dict[str, bool]
+
+
+class FakeAPIObject(dbtClassMixin, Replaceable, Mapping):
+    # override the mapping truthiness, len is always >1
+    def __bool__(self):
+        return True
+
+    def __getitem__(self, key):
+        try:
+            return getattr(self, key)
+        except AttributeError:
+            raise KeyError(key) from None
+
+    def __iter__(self):
+        raise_dataclass_not_dict(self)
+
+    def __len__(self):
+        raise_dataclass_not_dict(self)
+
+    def incorporate(self, **kwargs):
+        value = self.to_dict(omit_none=True)
+        value = deep_merge(value, kwargs)
+        return self.from_dict(value)
+
+
+@dataclass
+class Policy(FakeAPIObject):
+    database: bool = True
+    schema: bool = True
+    identifier: bool = True
+
+    def get_part(self, key: ComponentName) -> bool:
+        if key == ComponentName.Database:
+            return self.database
+        elif key == ComponentName.Schema:
+            return self.schema
+        elif key == ComponentName.Identifier:
+            return self.identifier
+        else:
+            raise ValueError(
+                'Got a key of {}, expected one of {}'
+                .format(key, list(ComponentName))
+            )
+
+    def replace_dict(self, dct: Dict[ComponentName, bool]):
+        kwargs: Dict[str, bool] = {}
+        for k, v in dct.items():
+            kwargs[str(k)] = v
+        return self.replace(**kwargs)
+
+
+@dataclass
+class Path(FakeAPIObject):
+    database: Optional[str] = None
+    schema: Optional[str] = None
+    identifier: Optional[str] = None
+
+    def __post_init__(self):
+        # handle pesky jinja2.Undefined sneaking in here and messing up rende
+        if not isinstance(self.database, (type(None), str)):
+            raise CompilationException(
+                'Got an invalid path database: {}'.format(self.database)
+            )
+        if not isinstance(self.schema, (type(None), str)):
+            raise CompilationException(
+                'Got an invalid path schema: {}'.format(self.schema)
+            )
+        if not isinstance(self.identifier, (type(None), str)):
+            raise CompilationException(
+                'Got an invalid path identifier: {}'.format(self.identifier)
+            )
+
+    def get_lowered_part(self, key: ComponentName) -> Optional[str]:
+        part = self.get_part(key)
+        if part is not None:
+            part = part.lower()
+        return part
+
+    def get_part(self, key: ComponentName) -> Optional[str]:
+        if key == ComponentName.Database:
+            return self.database
+        elif key == ComponentName.Schema:
+            return self.schema
+        elif key == ComponentName.Identifier:
+            return self.identifier
+        else:
+            raise ValueError(
+                'Got a key of {}, expected one of {}'
+                .format(key, list(ComponentName))
+            )
+
+    def replace_dict(self, dct: Dict[ComponentName, str]):
+        kwargs: Dict[str, str] = {}
+        for k, v in dct.items():
+            kwargs[str(k)] = v
+        return self.replace(**kwargs)

core/dbt/contracts/results.py

@@ -1,28 +1,38 @@
 from dbt.contracts.graph.manifest import CompileResultNode
 from dbt.contracts.graph.unparsed import (
-    Time, FreshnessStatus, FreshnessThreshold
+    FreshnessThreshold
 )
 from dbt.contracts.graph.parsed import ParsedSourceDefinition
-from dbt.contracts.util import Writable, Replaceable
+from dbt.contracts.util import (
+    BaseArtifactMetadata,
+    ArtifactMixin,
+    VersionedSchema,
+    Replaceable,
+    schema_version,
+)
 from dbt.exceptions import InternalException
+from dbt.events.functions import fire_event
+from dbt.events.types import TimingInfoCollected
 from dbt.logger import (
     TimingProcessor,
     JsonOnly,
-    GLOBAL_LOGGER as logger,
 )
 from dbt.utils import lowercase
-from hologram.helpers import StrEnum
-from hologram import JsonSchemaMixin
+from dbt.dataclass_schema import dbtClassMixin, StrEnum
 
 import agate
 
 from dataclasses import dataclass, field
 from datetime import datetime
-from typing import Union, Dict, List, Optional, Any, NamedTuple
+from typing import (
+    Union, Dict, List, Optional, Any, NamedTuple, Sequence,
+)
+
+from dbt.clients.system import write_json
 
 
 @dataclass
-class TimingInfo(JsonSchemaMixin):
+class TimingInfo(dbtClassMixin):
     name: str
     started_at: Optional[datetime] = None
     completed_at: Optional[datetime] = None
@@ -45,50 +55,87 @@ class collect_timing_info:
     def __exit__(self, exc_type, exc_value, traceback):
         self.timing_info.end()
         with JsonOnly(), TimingProcessor(self.timing_info):
-            logger.debug('finished collecting timing info')
+            fire_event(TimingInfoCollected())
+
+
+class RunningStatus(StrEnum):
+    Started = 'started'
+    Compiling = 'compiling'
+    Executing = 'executing'
+
+
+class NodeStatus(StrEnum):
+    Success = "success"
+    Error = "error"
+    Fail = "fail"
+    Warn = "warn"
+    Skipped = "skipped"
+    Pass = "pass"
+    RuntimeErr = "runtime error"
+
+
+class RunStatus(StrEnum):
+    Success = NodeStatus.Success
+    Error = NodeStatus.Error
+    Skipped = NodeStatus.Skipped
+
+
+class TestStatus(StrEnum):
+    Pass = NodeStatus.Pass
+    Error = NodeStatus.Error
+    Fail = NodeStatus.Fail
+    Warn = NodeStatus.Warn
+    Skipped = NodeStatus.Skipped
+
+
+class FreshnessStatus(StrEnum):
+    Pass = NodeStatus.Pass
+    Warn = NodeStatus.Warn
+    Error = NodeStatus.Error
+    RuntimeErr = NodeStatus.RuntimeErr
 
 
 @dataclass
-class PartialResult(JsonSchemaMixin, Writable):
+class BaseResult(dbtClassMixin):
+    status: Union[RunStatus, TestStatus, FreshnessStatus]
+    timing: List[TimingInfo]
+    thread_id: str
+    execution_time: float
+    adapter_response: Dict[str, Any]
+    message: Optional[str]
+    failures: Optional[int]
+
+    @classmethod
+    def __pre_deserialize__(cls, data):
+        data = super().__pre_deserialize__(data)
+        if 'message' not in data:
+            data['message'] = None
+        if 'failures' not in data:
+            data['failures'] = None
+        return data
+
+
+@dataclass
+class NodeResult(BaseResult):
     node: CompileResultNode
-    error: Optional[str] = None
-    status: Union[None, str, int, bool] = None
-    execution_time: Union[str, int] = 0
-    thread_id: Optional[str] = None
-    timing: List[TimingInfo] = field(default_factory=list)
-    fail: Optional[bool] = None
-    warn: Optional[bool] = None
-
-    # if the result got to the point where it could be skipped/failed, we would
-    # be returning a real result, not a partial.
-    @property
-    def skipped(self):
-        return False
 
 
 @dataclass
-class WritableRunModelResult(PartialResult):
-    skip: bool = False
+class RunResult(NodeResult):
+    agate_table: Optional[agate.Table] = field(
+        default=None, metadata={
+            'serialize': lambda x: None, 'deserialize': lambda x: None
+        }
+    )
 
     @property
     def skipped(self):
-        return self.skip
+        return self.status == RunStatus.Skipped
 
 
 @dataclass
-class RunModelResult(WritableRunModelResult):
-    agate_table: Optional[agate.Table] = None
-
-    def to_dict(self, *args, **kwargs):
-        dct = super().to_dict(*args, **kwargs)
-        dct.pop('agate_table', None)
-        return dct
-
-
-@dataclass
-class ExecutionResult(JsonSchemaMixin, Writable):
-    results: List[Union[WritableRunModelResult, PartialResult]]
-    generated_at: datetime
+class ExecutionResult(dbtClassMixin):
+    results: Sequence[BaseResult]
     elapsed_time: float
 
     def __len__(self):
@@ -101,141 +148,255 @@ class ExecutionResult(JsonSchemaMixin, Writable):
         return self.results[idx]
 
 
+@dataclass
+class RunResultsMetadata(BaseArtifactMetadata):
+    dbt_schema_version: str = field(
+        default_factory=lambda: str(RunResultsArtifact.dbt_schema_version)
+    )
+
+
+@dataclass
+class RunResultOutput(BaseResult):
+    unique_id: str
+
+
+def process_run_result(result: RunResult) -> RunResultOutput:
+    return RunResultOutput(
+        unique_id=result.node.unique_id,
+        status=result.status,
+        timing=result.timing,
+        thread_id=result.thread_id,
+        execution_time=result.execution_time,
+        message=result.message,
+        adapter_response=result.adapter_response,
+        failures=result.failures
+    )
+
+
+@dataclass
+class RunExecutionResult(
+    ExecutionResult,
+):
+    results: Sequence[RunResult]
+    args: Dict[str, Any] = field(default_factory=dict)
+    generated_at: datetime = field(default_factory=datetime.utcnow)
+
+    def write(self, path: str):
+        writable = RunResultsArtifact.from_execution_results(
+            results=self.results,
+            elapsed_time=self.elapsed_time,
+            generated_at=self.generated_at,
+            args=self.args,
+        )
+        writable.write(path)
+
+
+@dataclass
+@schema_version('run-results', 4)
+class RunResultsArtifact(ExecutionResult, ArtifactMixin):
+    results: Sequence[RunResultOutput]
+    args: Dict[str, Any] = field(default_factory=dict)
+
+    @classmethod
+    def from_execution_results(
+        cls,
+        results: Sequence[RunResult],
+        elapsed_time: float,
+        generated_at: datetime,
+        args: Dict,
+    ):
+        processed_results = [process_run_result(result) for result in results]
+        meta = RunResultsMetadata(
+            dbt_schema_version=str(cls.dbt_schema_version),
+            generated_at=generated_at,
+        )
+        return cls(
+            metadata=meta,
+            results=processed_results,
+            elapsed_time=elapsed_time,
+            args=args
+        )
+
+    def write(self, path: str):
+        write_json(path, self.to_dict(omit_none=False))
+
+
 @dataclass
 class RunOperationResult(ExecutionResult):
     success: bool
 
 
+@dataclass
+class RunOperationResultMetadata(BaseArtifactMetadata):
+    dbt_schema_version: str = field(default_factory=lambda: str(
+        RunOperationResultsArtifact.dbt_schema_version
+    ))
+
+
+@dataclass
+@schema_version('run-operation-result', 1)
+class RunOperationResultsArtifact(RunOperationResult, ArtifactMixin):
+
+    @classmethod
+    def from_success(
+        cls,
+        success: bool,
+        elapsed_time: float,
+        generated_at: datetime,
+    ):
+        meta = RunOperationResultMetadata(
+            dbt_schema_version=str(cls.dbt_schema_version),
+            generated_at=generated_at,
+        )
+        return cls(
+            metadata=meta,
+            results=[],
+            elapsed_time=elapsed_time,
+            success=success,
+        )
+
 # due to issues with typing.Union collapsing subclasses, this can't subclass
 # PartialResult
+
+
 @dataclass
-class SourceFreshnessResult(JsonSchemaMixin, Writable):
+class SourceFreshnessResult(NodeResult):
     node: ParsedSourceDefinition
+    status: FreshnessStatus
     max_loaded_at: datetime
     snapshotted_at: datetime
     age: float
-    status: FreshnessStatus
-    error: Optional[str] = None
-    execution_time: Union[str, int] = 0
-    thread_id: Optional[str] = None
-    timing: List[TimingInfo] = field(default_factory=list)
-    fail: Optional[bool] = None
-
-    def __post_init__(self):
-        self.fail = self.status == 'error'
-
-    @property
-    def warned(self):
-        return self.status == 'warn'
 
     @property
     def skipped(self):
         return False
 
 
-@dataclass
-class FreshnessMetadata(JsonSchemaMixin):
-    generated_at: datetime
-    elapsed_time: float
-
-
-@dataclass
-class FreshnessExecutionResult(FreshnessMetadata):
-    results: List[Union[PartialResult, SourceFreshnessResult]]
-
-    def write(self, path, omit_none=True):
-        """Create a new object with the desired output schema and write it."""
-        meta = FreshnessMetadata(
-            generated_at=self.generated_at,
-            elapsed_time=self.elapsed_time,
-        )
-        sources = {}
-        for result in self.results:
-            result_value: Union[
-                SourceFreshnessRuntimeError, SourceFreshnessOutput
-            ]
-            unique_id = result.node.unique_id
-            if result.error is not None:
-                result_value = SourceFreshnessRuntimeError(
-                    error=result.error,
-                    state=FreshnessErrorEnum.runtime_error,
-                )
-            else:
-                # we know that this must be a SourceFreshnessResult
-                if not isinstance(result, SourceFreshnessResult):
-                    raise InternalException(
-                        'Got {} instead of a SourceFreshnessResult for a '
-                        'non-error result in freshness execution!'
-                        .format(type(result))
-                    )
-                # if we're here, we must have a non-None freshness threshold
-                criteria = result.node.freshness
-                if criteria is None:
-                    raise InternalException(
-                        'Somehow evaluated a freshness result for a source '
-                        'that has no freshness criteria!'
-                    )
-                result_value = SourceFreshnessOutput(
-                    max_loaded_at=result.max_loaded_at,
-                    snapshotted_at=result.snapshotted_at,
-                    max_loaded_at_time_ago_in_s=result.age,
-                    state=result.status,
-                    criteria=criteria,
-                )
-            sources[unique_id] = result_value
-        output = FreshnessRunOutput(meta=meta, sources=sources)
-        output.write(path, omit_none=omit_none)
-
-    def __len__(self):
-        return len(self.results)
-
-    def __iter__(self):
-        return iter(self.results)
-
-    def __getitem__(self, idx):
-        return self.results[idx]
-
-
-def _copykeys(src, keys, **updates):
-    return {k: getattr(src, k) for k in keys}
-
-
-@dataclass
-class FreshnessCriteria(JsonSchemaMixin):
-    warn_after: Time
-    error_after: Time
-
-
 class FreshnessErrorEnum(StrEnum):
     runtime_error = 'runtime error'
 
 
 @dataclass
-class SourceFreshnessRuntimeError(JsonSchemaMixin):
-    error: str
-    state: FreshnessErrorEnum
+class SourceFreshnessRuntimeError(dbtClassMixin):
+    unique_id: str
+    error: Optional[Union[str, int]]
+    status: FreshnessErrorEnum
 
 
 @dataclass
-class SourceFreshnessOutput(JsonSchemaMixin):
+class SourceFreshnessOutput(dbtClassMixin):
+    unique_id: str
     max_loaded_at: datetime
     snapshotted_at: datetime
     max_loaded_at_time_ago_in_s: float
-    state: FreshnessStatus
+    status: FreshnessStatus
     criteria: FreshnessThreshold
-
-
-SourceFreshnessRunResult = Union[SourceFreshnessOutput,
-                                 SourceFreshnessRuntimeError]
+    adapter_response: Dict[str, Any]
+    timing: List[TimingInfo]
+    thread_id: str
+    execution_time: float
 
 
 @dataclass
-class FreshnessRunOutput(JsonSchemaMixin, Writable):
-    meta: FreshnessMetadata
-    sources: Dict[str, SourceFreshnessRunResult]
+class PartialSourceFreshnessResult(NodeResult):
+    status: FreshnessStatus
+
+    @property
+    def skipped(self):
+        return False
+
+
+FreshnessNodeResult = Union[PartialSourceFreshnessResult,
+                            SourceFreshnessResult]
+FreshnessNodeOutput = Union[SourceFreshnessRuntimeError, SourceFreshnessOutput]
+
+
+def process_freshness_result(
+    result: FreshnessNodeResult
+) -> FreshnessNodeOutput:
+    unique_id = result.node.unique_id
+    if result.status == FreshnessStatus.RuntimeErr:
+        return SourceFreshnessRuntimeError(
+            unique_id=unique_id,
+            error=result.message,
+            status=FreshnessErrorEnum.runtime_error,
+        )
+
+    # we know that this must be a SourceFreshnessResult
+    if not isinstance(result, SourceFreshnessResult):
+        raise InternalException(
+            'Got {} instead of a SourceFreshnessResult for a '
+            'non-error result in freshness execution!'
+            .format(type(result))
+        )
+    # if we're here, we must have a non-None freshness threshold
+    criteria = result.node.freshness
+    if criteria is None:
+        raise InternalException(
+            'Somehow evaluated a freshness result for a source '
+            'that has no freshness criteria!'
+        )
+    return SourceFreshnessOutput(
+        unique_id=unique_id,
+        max_loaded_at=result.max_loaded_at,
+        snapshotted_at=result.snapshotted_at,
+        max_loaded_at_time_ago_in_s=result.age,
+        status=result.status,
+        criteria=criteria,
+        adapter_response=result.adapter_response,
+        timing=result.timing,
+        thread_id=result.thread_id,
+        execution_time=result.execution_time,
+    )
+
+
+@dataclass
+class FreshnessMetadata(BaseArtifactMetadata):
+    dbt_schema_version: str = field(
+        default_factory=lambda: str(
+            FreshnessExecutionResultArtifact.dbt_schema_version
+        )
+    )
+
+
+@dataclass
+class FreshnessResult(ExecutionResult):
+    metadata: FreshnessMetadata
+    results: Sequence[FreshnessNodeResult]
+
+    @classmethod
+    def from_node_results(
+        cls,
+        results: List[FreshnessNodeResult],
+        elapsed_time: float,
+        generated_at: datetime,
+    ):
+        meta = FreshnessMetadata(generated_at=generated_at)
+        return cls(metadata=meta, results=results, elapsed_time=elapsed_time)
+
+
+@dataclass
+@schema_version('sources', 3)
+class FreshnessExecutionResultArtifact(
+    ArtifactMixin,
+    VersionedSchema,
+):
+    metadata: FreshnessMetadata
+    results: Sequence[FreshnessNodeOutput]
+    elapsed_time: float
+
+    @classmethod
+    def from_result(cls, base: FreshnessResult):
+        processed = [process_freshness_result(r) for r in base.results]
+        return cls(
+            metadata=base.metadata,
+            results=processed,
+            elapsed_time=base.elapsed_time,
+        )
 
 
 Primitive = Union[bool, str, float, None]
+PrimitiveDict = Dict[str, Primitive]
 
 CatalogKey = NamedTuple(
     'CatalogKey',
@@ -244,40 +405,40 @@ CatalogKey = NamedTuple(
 
 
 @dataclass
-class StatsItem(JsonSchemaMixin):
+class StatsItem(dbtClassMixin):
     id: str
     label: str
     value: Primitive
-    description: Optional[str]
     include: bool
+    description: Optional[str] = None
 
 
 StatsDict = Dict[str, StatsItem]
 
 
 @dataclass
-class ColumnMetadata(JsonSchemaMixin):
+class ColumnMetadata(dbtClassMixin):
     type: str
-    comment: Optional[str]
     index: int
     name: str
+    comment: Optional[str] = None
 
 
 ColumnMap = Dict[str, ColumnMetadata]
 
 
 @dataclass
-class TableMetadata(JsonSchemaMixin):
+class TableMetadata(dbtClassMixin):
     type: str
-    database: Optional[str]
     schema: str
     name: str
-    comment: Optional[str]
-    owner: Optional[str]
+    database: Optional[str] = None
+    comment: Optional[str] = None
+    owner: Optional[str] = None
 
 
 @dataclass
-class CatalogTable(JsonSchemaMixin, Replaceable):
+class CatalogTable(dbtClassMixin, Replaceable):
     metadata: TableMetadata
     columns: ColumnMap
     stats: StatsDict
@@ -293,9 +454,45 @@ class CatalogTable(JsonSchemaMixin, Replaceable):
 
 
 @dataclass
-class CatalogResults(JsonSchemaMixin, Writable):
+class CatalogMetadata(BaseArtifactMetadata):
+    dbt_schema_version: str = field(
+        default_factory=lambda: str(CatalogArtifact.dbt_schema_version)
+    )
+
+
+@dataclass
+class CatalogResults(dbtClassMixin):
     nodes: Dict[str, CatalogTable]
     sources: Dict[str, CatalogTable]
-    generated_at: datetime
-    errors: Optional[List[str]]
+    errors: Optional[List[str]] = None
     _compile_results: Optional[Any] = None
+
+    def __post_serialize__(self, dct):
+        dct = super().__post_serialize__(dct)
+        if '_compile_results' in dct:
+            del dct['_compile_results']
+        return dct
+
+
+@dataclass
+@schema_version('catalog', 1)
+class CatalogArtifact(CatalogResults, ArtifactMixin):
+    metadata: CatalogMetadata
+
+    @classmethod
+    def from_results(
+        cls,
+        generated_at: datetime,
+        nodes: Dict[str, CatalogTable],
+        sources: Dict[str, CatalogTable],
+        compile_results: Optional[Any],
+        errors: Optional[List[str]]
+    ) -> 'CatalogArtifact':
+        meta = CatalogMetadata(generated_at=generated_at)
+        return cls(
+            metadata=meta,
+            nodes=nodes,
+            sources=sources,
+            errors=errors,
+            _compile_results=compile_results,
+        )

core/dbt/contracts/rpc.py

@@ -1,582 +0,0 @@
-import enum
-import os
-import uuid
-from dataclasses import dataclass, field
-from datetime import datetime, timedelta
-from typing import Optional, Union, List, Any, Dict, Type
-
-from hologram import JsonSchemaMixin
-from hologram.helpers import StrEnum
-
-from dbt.contracts.graph.compiled import CompileResultNode
-from dbt.contracts.graph.manifest import WritableManifest
-from dbt.contracts.results import (
-    TimingInfo,
-    CatalogResults,
-    ExecutionResult,
-)
-from dbt.exceptions import InternalException
-from dbt.logger import LogMessage
-from dbt.utils import restrict_to
-
-
-TaskTags = Optional[Dict[str, Any]]
-TaskID = uuid.UUID
-
-# Inputs
-
-
-@dataclass
-class RPCParameters(JsonSchemaMixin):
-    timeout: Optional[float]
-    task_tags: TaskTags
-
-
-@dataclass
-class RPCExecParameters(RPCParameters):
-    name: str
-    sql: str
-    macros: Optional[str]
-
-
-@dataclass
-class RPCCompileParameters(RPCParameters):
-    threads: Optional[int] = None
-    models: Union[None, str, List[str]] = None
-    exclude: Union[None, str, List[str]] = None
-
-
-@dataclass
-class RPCSnapshotParameters(RPCParameters):
-    threads: Optional[int] = None
-    select: Union[None, str, List[str]] = None
-    exclude: Union[None, str, List[str]] = None
-
-
-@dataclass
-class RPCTestParameters(RPCCompileParameters):
-    data: bool = False
-    schema: bool = False
-
-
-@dataclass
-class RPCSeedParameters(RPCParameters):
-    threads: Optional[int] = None
-    select: Union[None, str, List[str]] = None
-    exclude: Union[None, str, List[str]] = None
-    show: bool = False
-
-
-@dataclass
-class RPCDocsGenerateParameters(RPCParameters):
-    compile: bool = True
-
-
-@dataclass
-class RPCCliParameters(RPCParameters):
-    cli: str
-
-
-@dataclass
-class RPCNoParameters(RPCParameters):
-    pass
-
-
-@dataclass
-class KillParameters(RPCParameters):
-    task_id: TaskID
-
-
-@dataclass
-class PollParameters(RPCParameters):
-    request_token: TaskID
-    logs: bool = True
-    logs_start: int = 0
-
-
-@dataclass
-class PSParameters(RPCParameters):
-    active: bool = True
-    completed: bool = False
-
-
-@dataclass
-class StatusParameters(RPCParameters):
-    pass
-
-
-@dataclass
-class GCSettings(JsonSchemaMixin):
-    # start evicting the longest-ago-ended tasks here
-    maxsize: int
-    # start evicting all tasks before now - auto_reap_age when we have this
-    # many tasks in the table
-    reapsize: int
-    # a positive timedelta indicating how far back we should go
-    auto_reap_age: timedelta
-
-
-@dataclass
-class GCParameters(RPCParameters):
-    """The gc endpoint takes three arguments, any of which may be present:
-
-    - task_ids: An optional list of task ID UUIDs to try to GC
-    - before: If provided, should be a datetime string. All tasks that finished
-        before that datetime will be GCed
-    - settings: If provided, should be a GCSettings object in JSON form. It
-        will be applied to the task manager before GC starts. By default the
-        existing gc settings remain.
-    """
-    task_ids: Optional[List[TaskID]] = None
-    before: Optional[datetime] = None
-    settings: Optional[GCSettings] = None
-
-
-@dataclass
-class RPCRunOperationParameters(RPCParameters):
-    macro: str
-    args: Dict[str, Any] = field(default_factory=dict)
-
-
-@dataclass
-class RPCSourceFreshnessParameters(RPCParameters):
-    threads: Optional[int] = None
-    select: Union[None, str, List[str]] = None
-
-
-@dataclass
-class GetManifestParameters(RPCParameters):
-    pass
-
-# Outputs
-
-
-@dataclass
-class RemoteResult(JsonSchemaMixin):
-    logs: List[LogMessage]
-
-
-@dataclass
-class RemoteEmptyResult(RemoteResult):
-    pass
-
-
-@dataclass
-class RemoteCatalogResults(CatalogResults, RemoteResult):
-    pass
-
-
-@dataclass
-class RemoteCompileResult(RemoteResult):
-    raw_sql: str
-    compiled_sql: str
-    node: CompileResultNode
-    timing: List[TimingInfo]
-
-    @property
-    def error(self):
-        return None
-
-
-@dataclass
-class RemoteExecutionResult(ExecutionResult, RemoteResult):
-    pass
-
-
-@dataclass
-class ResultTable(JsonSchemaMixin):
-    column_names: List[str]
-    rows: List[Any]
-
-
-@dataclass
-class RemoteRunOperationResult(ExecutionResult, RemoteResult):
-    success: bool
-
-
-@dataclass
-class RemoteRunResult(RemoteCompileResult):
-    table: ResultTable
-
-
-RPCResult = Union[
-    RemoteCompileResult,
-    RemoteExecutionResult,
-    RemoteCatalogResults,
-    RemoteEmptyResult,
-    RemoteRunOperationResult,
-]
-
-
-# GC types
-
-
-class GCResultState(StrEnum):
-    Deleted = 'deleted'  # successful GC
-    Missing = 'missing'  # nothing to GC
-    Running = 'running'  # can't GC
-
-
-@dataclass
-class GCResult(RemoteResult):
-    logs: List[LogMessage] = field(default_factory=list)
-    deleted: List[TaskID] = field(default_factory=list)
-    missing: List[TaskID] = field(default_factory=list)
-    running: List[TaskID] = field(default_factory=list)
-
-    def add_result(self, task_id: TaskID, state: GCResultState):
-        if state == GCResultState.Missing:
-            self.missing.append(task_id)
-        elif state == GCResultState.Running:
-            self.running.append(task_id)
-        elif state == GCResultState.Deleted:
-            self.deleted.append(task_id)
-        else:
-            raise InternalException(
-                f'Got invalid state in add_result: {state}'
-            )
-
-# Task management types
-
-
-class TaskHandlerState(StrEnum):
-    NotStarted = 'not started'
-    Initializing = 'initializing'
-    Running = 'running'
-    Success = 'success'
-    Error = 'error'
-    Killed = 'killed'
-    Failed = 'failed'
-
-    def __lt__(self, other) -> bool:
-        """A logical ordering for TaskHandlerState:
-
-        NotStarted < Initializing < Running < (Success, Error, Killed, Failed)
-        """
-        if not isinstance(other, TaskHandlerState):
-            raise TypeError('cannot compare to non-TaskHandlerState')
-        order = (self.NotStarted, self.Initializing, self.Running)
-        smaller = set()
-        for value in order:
-            smaller.add(value)
-            if self == value:
-                return other not in smaller
-
-        return False
-
-    def __le__(self, other) -> bool:
-        # so that ((Success <= Error) is True)
-        return ((self < other) or
-                (self == other) or
-                (self.finished and other.finished))
-
-    def __gt__(self, other) -> bool:
-        if not isinstance(other, TaskHandlerState):
-            raise TypeError('cannot compare to non-TaskHandlerState')
-        order = (self.NotStarted, self.Initializing, self.Running)
-        smaller = set()
-        for value in order:
-            smaller.add(value)
-            if self == value:
-                return other in smaller
-        return other in smaller
-
-    def __ge__(self, other) -> bool:
-        # so that ((Success <= Error) is True)
-        return ((self > other) or
-                (self == other) or
-                (self.finished and other.finished))
-
-    @property
-    def finished(self) -> bool:
-        return self in (self.Error, self.Success, self.Killed, self.Failed)
-
-
-@dataclass
-class TaskTiming(JsonSchemaMixin):
-    state: TaskHandlerState
-    start: Optional[datetime]
-    end: Optional[datetime]
-    elapsed: Optional[float]
-
-
-@dataclass
-class TaskRow(TaskTiming):
-    task_id: TaskID
-    request_id: Union[str, int]
-    request_source: str
-    method: str
-    timeout: Optional[float]
-    tags: TaskTags
-
-
-@dataclass
-class PSResult(RemoteResult):
-    rows: List[TaskRow]
-
-
-class KillResultStatus(StrEnum):
-    Missing = 'missing'
-    NotStarted = 'not_started'
-    Killed = 'killed'
-    Finished = 'finished'
-
-
-@dataclass
-class KillResult(RemoteResult):
-    state: KillResultStatus = KillResultStatus.Missing
-    logs: List[LogMessage] = field(default_factory=list)
-
-
-@dataclass
-class GetManifestResult(RemoteResult):
-    manifest: Optional[WritableManifest]
-
-
-# this is kind of carefuly structured: BlocksManifestTasks is implied by
-# RequiresConfigReloadBefore and RequiresManifestReloadAfter
-class RemoteMethodFlags(enum.Flag):
-    Empty = 0
-    BlocksManifestTasks = 1
-    RequiresConfigReloadBefore = 3
-    RequiresManifestReloadAfter = 5
-    Builtin = 8
-
-
-# Polling types
-
-
-@dataclass
-class PollResult(RemoteResult, TaskTiming):
-    state: TaskHandlerState
-    tags: TaskTags
-    start: Optional[datetime]
-    end: Optional[datetime]
-    elapsed: Optional[float]
-
-
-@dataclass
-class PollRemoteEmptyCompleteResult(PollResult, RemoteEmptyResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollRemoteEmptyCompleteResult'],
-        base: RemoteEmptyResult,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollRemoteEmptyCompleteResult':
-        return cls(
-            logs=logs,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-
-@dataclass
-class PollKilledResult(PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Killed),
-    )
-
-
-@dataclass
-class PollExecuteCompleteResult(RemoteExecutionResult, PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollExecuteCompleteResult'],
-        base: RemoteExecutionResult,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollExecuteCompleteResult':
-        return cls(
-            results=base.results,
-            generated_at=base.generated_at,
-            elapsed_time=base.elapsed_time,
-            logs=logs,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-
-@dataclass
-class PollCompileCompleteResult(RemoteCompileResult, PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollCompileCompleteResult'],
-        base: RemoteCompileResult,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollCompileCompleteResult':
-        return cls(
-            raw_sql=base.raw_sql,
-            compiled_sql=base.compiled_sql,
-            node=base.node,
-            timing=base.timing,
-            logs=logs,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-
-@dataclass
-class PollRunCompleteResult(RemoteRunResult, PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollRunCompleteResult'],
-        base: RemoteRunResult,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollRunCompleteResult':
-        return cls(
-            raw_sql=base.raw_sql,
-            compiled_sql=base.compiled_sql,
-            node=base.node,
-            timing=base.timing,
-            logs=logs,
-            table=base.table,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-
-@dataclass
-class PollRunOperationCompleteResult(RemoteRunOperationResult, PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollRunOperationCompleteResult'],
-        base: RemoteRunOperationResult,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollRunOperationCompleteResult':
-        return cls(
-            success=base.success,
-            results=base.results,
-            generated_at=base.generated_at,
-            elapsed_time=base.elapsed_time,
-            logs=logs,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-
-@dataclass
-class PollCatalogCompleteResult(RemoteCatalogResults, PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollCatalogCompleteResult'],
-        base: RemoteCatalogResults,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollCatalogCompleteResult':
-        return cls(
-            nodes=base.nodes,
-            sources=base.sources,
-            generated_at=base.generated_at,
-            errors=base.errors,
-            _compile_results=base._compile_results,
-            logs=logs,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-
-@dataclass
-class PollInProgressResult(PollResult):
-    pass
-
-
-@dataclass
-class PollGetManifestResult(GetManifestResult, PollResult):
-    state: TaskHandlerState = field(
-        metadata=restrict_to(TaskHandlerState.Success,
-                             TaskHandlerState.Failed),
-    )
-
-    @classmethod
-    def from_result(
-        cls: Type['PollGetManifestResult'],
-        base: GetManifestResult,
-        tags: TaskTags,
-        timing: TaskTiming,
-        logs: List[LogMessage],
-    ) -> 'PollGetManifestResult':
-        return cls(
-            manifest=base.manifest,
-            logs=logs,
-            tags=tags,
-            state=timing.state,
-            start=timing.start,
-            end=timing.end,
-            elapsed=timing.elapsed,
-        )
-
-# Manifest parsing types
-
-
-class ManifestStatus(StrEnum):
-    Init = 'init'
-    Compiling = 'compiling'
-    Ready = 'ready'
-    Error = 'error'
-
-
-@dataclass
-class LastParse(RemoteResult):
-    state: ManifestStatus = ManifestStatus.Init
-    logs: List[LogMessage] = field(default_factory=list)
-    error: Optional[Dict[str, Any]] = None
-    timestamp: datetime = field(default_factory=datetime.utcnow)
-    pid: int = field(default_factory=os.getpid)

core/dbt/contracts/selection.py

@@ -0,0 +1,23 @@
+from dataclasses import dataclass
+from dbt.dataclass_schema import dbtClassMixin
+
+from typing import List, Dict, Any, Union
+
+
+@dataclass
+class SelectorDefinition(dbtClassMixin):
+    name: str
+    definition: Union[str, Dict[str, Any]]
+    description: str = ''
+    default: bool = False
+
+
+@dataclass
+class SelectorFile(dbtClassMixin):
+    selectors: List[SelectorDefinition]
+    version: int = 2
+
+
+# @dataclass
+# class SelectorCollection:
+#     packages: Dict[str, List[SelectorFile]] = field(default_factory=dict)