Store adapter on RuntimeConfig, rather than global

core/dbt/adapters/factory.py

@@ -171,7 +171,7 @@ def register_adapter(config: AdapterRequiredConfig) -> None:
     FACTORY.register_adapter(config)
 
 
-def get_adapter(config: AdapterRequiredConfig):
+def get_or_create_adapter(config: AdapterRequiredConfig):
     return FACTORY.lookup_adapter(config.credentials.type)
 
 
@@ -217,3 +217,16 @@ def get_adapter_package_names(name: Optional[str]) -> List[str]:
 
 def get_adapter_type_names(name: Optional[str]) -> List[str]:
     return FACTORY.get_adapter_type_names(name)
+
+# this doesn't muck with global adapters
+# it does use AdapterFactory.plugins (which is global)
+# to instantiate a new Adapter object, using the AdapterPlugin object
+# so accessing AdapterFactory.plugins requires a lock
+# but this method does not actually mutate AdapterFactory
+def create_adapter(config) -> Adapter:
+    adapter_name = config.credentials.type
+    Plugin = FACTORY.get_adapter_plugins(adapter_name)[0]
+    # TODO is this necessary?
+    import copy
+    adapter = copy.deepcopy(Plugin.adapter)
+    return adapter(config)

core/dbt/compilation.py

@@ -7,7 +7,6 @@ import pickle
 import sqlparse
 
 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
@@ -190,14 +189,14 @@ class Compiler:
         return context
 
     def add_ephemeral_prefix(self, name: str):
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_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)
+            adapter = self.config.get_or_create_adapter(self.config)
             relation_cls = adapter.Relation
             relation_name = str(relation_cls.create_from(self.config, node))
         return relation_name

core/dbt/config/runtime.py

@@ -10,7 +10,7 @@ from .project import Project
 from .renderer import DbtProjectYamlRenderer, ProfileRenderer
 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.adapters.factory import get_relation_class_by_name, get_include_paths, create_adapter, Adapter
 from dbt.helper_types import FQNPath, PathSet, DictDefaultEmptyStr
 from dbt.config.profile import read_user_config
 from dbt.contracts.connection import AdapterRequiredConfig, Credentials
@@ -47,6 +47,7 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
     profile_name: str
     cli_vars: Dict[str, Any]
     dependencies: Optional[Mapping[str, "RuntimeConfig"]] = None
+    adapter: Optional[Adapter] = None
 
     def __post_init__(self):
         self.validate()
@@ -373,6 +374,20 @@ class RuntimeConfig(Project, Profile, AdapterRequiredConfig):
                 if path.is_dir() and not path.name.startswith("__"):
                     yield path
 
+    @classmethod
+    def get_or_create_adapter(self, config, force_recreate=False) -> Adapter:
+        if self.adapter is None or force_recreate:
+            self.adapter = create_adapter(config)
+        return self.adapter
+
+
+    # mutates this object
+    @classmethod
+    def update_credentials(self, credential_updates: dict):
+        for k,v in credential_updates.items():
+            self.credentials[k] = v
+        config.get_or_create_adapter(config, force=True)
+
 
 class UnsetCredentials(Credentials):
     def __init__(self):

core/dbt/context/providers.py

@@ -15,7 +15,7 @@ from typing import (
 from typing_extensions import Protocol
 
 from dbt.adapters.base.column import Column
-from dbt.adapters.factory import get_adapter, get_adapter_package_names, get_adapter_type_names
+from dbt.adapters.factory import 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
@@ -694,7 +694,7 @@ class ProviderContext(ManifestContext):
         self.sql_results: Dict[str, AttrDict] = {}
         self.context_config: Optional[ContextConfig] = context_config
         self.provider: Provider = provider
-        self.adapter = get_adapter(self.config)
+        self.adapter = self.config.get_or_create_adapter(self.config)
         # The macro namespace is used in creating the DatabaseWrapper
         self.db_wrapper = self.provider.DatabaseWrapper(self.adapter, self.namespace)
 

core/dbt/lib.py

@@ -20,22 +20,33 @@ def get_dbt_config(project_dir, args=None, single_threaded=False):
     profile = args.profile if hasattr(args, "profile") else None
     target = args.target if hasattr(args, "target") else None
 
-    # Construct a phony config
-    config = RuntimeConfig.from_args(
+    # TODO: do this without reading files
+    config = RuntimeConfig.from_parts(
         RuntimeArgs(project_dir, profiles_dir, single_threaded, profile, target)
     )
-    # Clear previously registered adapters--
-    # this fixes cacheing behavior on the dbt-server
+    
+    # we just want the side-effect here of caching the adapter on the RuntimeConfig
+    adapter = config.get_or_create_adapter(config)
+    
+    # TODO use new cli.flags.Flags here to de-globalize
     flags.set_from_args(args, config)
-    dbt.adapters.factory.reset_adapters()
-    # Load the relevant adapter
-    dbt.adapters.factory.register_adapter(config)
+    
     # Set invocation id
+    # TODO: make this not global. We could store this in Flags or RuntimeConfig instead
     dbt.events.functions.set_invocation_id()
 
     return config
 
 
+# this has side effects, but only for this instance of RuntimeConfig
+# zero global side effects
+def reload_adapter(config, new_credentials):
+    if new_credentials:
+        config.update_credentials(new_credentials)
+    adapter = config.get_or_create_adapter(config, force_reload=True)
+    return adapter
+
+
 def get_task_by_type(type):
     # TODO: we need to tell dbt-server what tasks are available
     from dbt.task.run import RunTask
@@ -82,7 +93,6 @@ def create_task(type, args, manifest, config):
 def _get_operation_node(manifest, project_path, sql):
     from dbt.parser.manifest import process_node
     from dbt.parser.sql import SqlBlockParser
-    import dbt.adapters.factory
 
     config = get_dbt_config(project_path)
     block_parser = SqlBlockParser(
@@ -91,7 +101,7 @@ def _get_operation_node(manifest, project_path, sql):
         root_project=config,
     )
 
-    adapter = dbt.adapters.factory.get_adapter(config)
+    adapter = config.get_or_create_adapter(config)
     # TODO : This needs a real name?
     sql_node = block_parser.parse_remote(sql, "name")
     process_node(config, manifest, sql_node)

core/dbt/parser/base.py

@@ -11,7 +11,6 @@ from dbt.context.providers import (
     generate_parser_model_context,
     generate_generate_name_macro_context,
 )
-from dbt.adapters.factory import get_adapter  # noqa: F401
 from dbt.clients.jinja import get_rendered
 from dbt.config import Project, RuntimeConfig
 from dbt.context.context_config import ContextConfig

core/dbt/parser/manifest.py

@@ -12,7 +12,6 @@ import dbt.tracking
 import dbt.flags as flags
 
 from dbt.adapters.factory import (
-    get_adapter,
     get_relation_class_by_name,
     get_adapter_package_names,
 )
@@ -202,9 +201,7 @@ class ManifestLoader:
         reset: bool = False,
     ) -> Manifest:
 
-        adapter = get_adapter(config)  # type: ignore
-        # reset is set in a TaskManager load_manifest call, since
-        # the config and adapter may be persistent.
+        adapter = config.get_or_create_adapter(config)  # type: ignore
         if reset:
             config.clear_dependencies()
             adapter.clear_macro_manifest()
@@ -520,7 +517,7 @@ class ManifestLoader:
     def macro_depends_on(self):
         macro_ctx = generate_macro_context(self.root_project)
         macro_namespace = TestMacroNamespace(self.macro_resolver, {}, None, MacroStack(), [])
-        adapter = get_adapter(self.root_project)
+        adapter = self.root_project.get_or_create_adapter(self.root_project)
         db_wrapper = ParseProvider().DatabaseWrapper(adapter, macro_namespace)
         for macro in self.manifest.macros.values():
             if macro.created_at < self.started_at:

core/dbt/parser/schemas.py

@@ -8,7 +8,7 @@ from typing import Iterable, Dict, Any, Union, List, Optional, Generic, TypeVar,
 
 from dbt.dataclass_schema import ValidationError, dbtClassMixin
 
-from dbt.adapters.factory import get_adapter, get_adapter_package_names
+from dbt.adapters.factory import get_adapter_package_names
 from dbt.clients.jinja import get_rendered, add_rendered_test_kwargs
 from dbt.clients.yaml_helper import load_yaml_text
 from dbt.parser.schema_renderer import SchemaYamlRenderer
@@ -473,7 +473,7 @@ class SchemaParser(SimpleParser[GenericTestBlock, ParsedGenericTestNode]):
             column_name = column.name
             should_quote = column.quote or (column.quote is None and target_block.quote_columns)
             if should_quote:
-                column_name = get_adapter(self.root_project).quote(column_name)
+                column_name = self.root_project.get_or_create_adapter(self.root_project).quote(column_name)
             column_tags = column.tags
 
         block = GenericTestBlock.from_test_block(

core/dbt/parser/sources.py

@@ -1,7 +1,6 @@
 import itertools
 from pathlib import Path
 from typing import Iterable, Dict, Optional, Set, Any
-from dbt.adapters.factory import get_adapter
 from dbt.config import RuntimeConfig
 from dbt.context.context_config import (
     BaseContextConfigGenerator,
@@ -240,7 +239,7 @@ class SourcePatcher:
             column_name = column.name
             should_quote = column.quote or (column.quote is None and target.quote_columns)
             if should_quote:
-                column_name = get_adapter(self.root_project).quote(column_name)
+                column_name = self.root_project.get_or_create_adapter(self.root_project).quote(column_name)
 
         tags_sources = [target.source.tags, target.table.tags]
         if column is not None:
@@ -285,7 +284,7 @@ class SourcePatcher:
         )
 
     def _get_relation_name(self, node: ParsedSourceDefinition):
-        adapter = get_adapter(self.root_project)
+        adapter = get_or_create_adapter(self.root_project)
         relation_cls = adapter.Relation
         return str(relation_cls.create_from(self.root_project, node))
 

core/dbt/task/base.py

@@ -175,10 +175,6 @@ def move_to_nearest_project_dir(args):
 class ConfiguredTask(BaseTask):
     ConfigType = RuntimeConfig
 
-    def __init__(self, args, config):
-        super().__init__(args, config)
-        register_adapter(self.config)
-
     @classmethod
     def from_args(cls, args):
         move_to_nearest_project_dir(args)

core/dbt/task/build.py

@@ -3,7 +3,6 @@ from .snapshot import SnapshotRunner as snapshot_model_runner
 from .seed import SeedRunner as seed_runner
 from .test import TestRunner as test_runner
 
-from dbt.adapters.factory import get_adapter
 from dbt.contracts.results import NodeStatus
 from dbt.exceptions import InternalException
 from dbt.graph import ResourceTypeSelector
@@ -67,6 +66,6 @@ class BuildTask(RunTask):
     def compile_manifest(self):
         if self.manifest is None:
             raise InternalException("compile_manifest called before manifest was loaded")
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
         compiler = adapter.get_compiler()
         self.graph = compiler.compile(self.manifest, add_test_edges=True)

core/dbt/task/debug.py

@@ -9,7 +9,7 @@ from dbt.events.types import OpenCommand
 from dbt import flags
 import dbt.clients.system
 import dbt.exceptions
-from dbt.adapters.factory import get_adapter, register_adapter
+from dbt.adapters.factory import create_adapter
 from dbt.config import Project, Profile
 from dbt.config.renderer import DbtProjectYamlRenderer, ProfileRenderer
 from dbt.config.utils import parse_cli_vars
@@ -328,8 +328,7 @@ class DebugTask(BaseTask):
         """Return a string containing the error message, or None if there was
         no error.
         """
-        register_adapter(profile)
-        adapter = get_adapter(profile)
+        adapter = create_adapter(profile)
         try:
             with adapter.connection_named("debug"):
                 adapter.debug_query()

core/dbt/task/generate.py

@@ -7,7 +7,6 @@ from dbt.dataclass_schema import ValidationError
 
 from .compile import CompileTask
 
-from dbt.adapters.factory import get_adapter
 from dbt.contracts.graph.compiled import CompileResultNode
 from dbt.contracts.graph.manifest import Manifest
 from dbt.contracts.results import (
@@ -234,7 +233,7 @@ class GenerateTask(CompileTask):
         if self.manifest is None:
             raise InternalException("self.manifest was None in run!")
 
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
         with adapter.connection_named("generate_catalog"):
             fire_event(BuildingCatalog())
             catalog_table, exceptions = adapter.get_catalog(self.manifest)

core/dbt/task/parse.py

@@ -7,7 +7,6 @@
 # Use a visualizer such as snakeviz to look at the output:
 # snakeviz dbt.cprof
 from dbt.task.base import ConfiguredTask
-from dbt.adapters.factory import get_adapter
 from dbt.parser.manifest import Manifest, ManifestLoader, _check_manifest
 from dbt.logger import DbtProcessState
 from dbt.clients.system import write_file
@@ -62,7 +61,7 @@ class ParseTask(ConfiguredTask):
     # ManifestLoader.load_all
 
     def get_full_manifest(self):
-        adapter = get_adapter(self.config)  # type: ignore
+        adapter = self.config.get_or_create_adapter(self.config)  # type: ignore
         root_config = self.config
         macro_hook = adapter.connections.set_query_header
         with PARSING_STATE:
@@ -84,7 +83,7 @@ class ParseTask(ConfiguredTask):
         fire_event(ManifestLoaded())
 
     def compile_manifest(self):
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
         compiler = adapter.get_compiler()
         self.graph = compiler.compile(self.manifest)
 

core/dbt/task/run_operation.py

@@ -6,7 +6,6 @@ import agate
 from .runnable import ManifestTask
 
 import dbt.exceptions
-from dbt.adapters.factory import get_adapter
 from dbt.config.utils import parse_cli_vars
 from dbt.contracts.results import RunOperationResultsArtifact
 from dbt.exceptions import InternalException
@@ -36,7 +35,7 @@ class RunOperationTask(ManifestTask):
             raise InternalException("manifest was None in compile_manifest")
 
     def _run_unsafe(self) -> agate.Table:
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
 
         package_name, macro_name = self._get_macro_parts()
         macro_kwargs = self._get_kwargs()

core/dbt/task/runnable.py

@@ -16,7 +16,6 @@ from .printer import (
 from dbt.clients.system import write_file
 from dbt.task.base import ConfiguredTask
 from dbt.adapters.base import BaseRelation
-from dbt.adapters.factory import get_adapter
 from dbt.logger import (
     DbtProcessState,
     TextOnly,
@@ -86,7 +85,7 @@ class ManifestTask(ConfiguredTask):
             raise InternalException("compile_manifest called before manifest was loaded")
 
         # we cannot get adapter in init since it will break rpc #5579
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
         compiler = adapter.get_compiler()
         self.graph = compiler.compile(self.manifest)
 
@@ -188,7 +187,7 @@ class GraphRunnableTask(ManifestTask):
         return os.path.join(self.config.target_path, RESULT_FILE_NAME)
 
     def get_runner(self, node):
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
         run_count: int = 0
         num_nodes: int = 0
 
@@ -350,7 +349,7 @@ class GraphRunnableTask(ManifestTask):
         pool.close()
         pool.terminate()
 
-        adapter = get_adapter(self.config)
+        adapter = self.adapter
 
         if not adapter.is_cancelable():
             fire_event(QueryCancelationUnsupported(type=adapter.type()))
@@ -427,7 +426,7 @@ class GraphRunnableTask(ManifestTask):
         pass
 
     def execute_with_hooks(self, selected_uids: AbstractSet[str]):
-        adapter = get_adapter(self.config)
+        adapter = self.config.get_or_create_adapter(self.config)
         try:
             self.before_hooks(adapter)
             started = time.time()

core/dbt/tests/fixtures/project.py

@@ -8,7 +8,7 @@ import yaml
 
 import dbt.flags as flags
 from dbt.config.runtime import RuntimeConfig
-from dbt.adapters.factory import get_adapter, register_adapter, reset_adapters, get_adapter_by_type
+from dbt.adapters.factory import get_adapter_by_type
 from dbt.events.functions import setup_event_logger
 from dbt.tests.util import (
     write_file,
@@ -246,14 +246,12 @@ def adapter(unique_schema, project_root, profiles_root, profiles_yml, dbt_projec
     )
     flags.set_from_args(args, {})
     runtime_config = RuntimeConfig.from_args(args)
-    register_adapter(runtime_config)
-    adapter = get_adapter(runtime_config)
+    adapter = runtime_config.get_or_create_adapter(runtime_config)
     # We only need the base macros, not macros from dependencies, and don't want
     # to run 'dbt deps' here.
     adapter.load_macro_manifest(base_macros_only=True)
     yield adapter
     adapter.cleanup_connections()
-    reset_adapters()
 
 
 # Start at directory level.