[dagster-dbt][refactor] Clean up multi-asset creation

Author: OwenKephart

python_modules/dagster/dagster/_core/definitions/asset_key.py

@@ -101,7 +101,7 @@ def to_python_identifier(self, suffix: Optional[str] = None) -> str:
         if suffix is not None:
             path.append(suffix)
 
-        return "__".join(path).replace("-", "_")
+        return "__".join(path).replace("-", "_").replace(".", "_")
 
     @staticmethod
     def from_user_string(asset_key_string: str) -> "AssetKey":

python_modules/libraries/dagster-dbt/dagster_dbt/asset_decorator.py

@@ -14,7 +14,7 @@
 from dagster_dbt.asset_utils import (
     DAGSTER_DBT_EXCLUDE_METADATA_KEY,
     DAGSTER_DBT_SELECT_METADATA_KEY,
-    build_dbt_multi_asset_args,
+    build_dbt_specs,
 )
 from dagster_dbt.dagster_dbt_translator import DagsterDbtTranslator, validate_translator
 from dagster_dbt.dbt_manifest import DbtManifestParam, validate_manifest
@@ -302,14 +302,9 @@ def partitionshop_dbt_assets(context: AssetExecutionContext, dbt: DbtCliResource
     dagster_dbt_translator = validate_translator(dagster_dbt_translator or DagsterDbtTranslator())
     manifest = validate_manifest(manifest)
 
-    (
-        deps,
-        outs,
-        internal_asset_deps,
-        check_specs,
-    ) = build_dbt_multi_asset_args(
+    specs, check_specs = build_dbt_specs(
+        translator=dagster_dbt_translator,
         manifest=manifest,
-        dagster_dbt_translator=dagster_dbt_translator,
         select=select,
         exclude=exclude or "",
         io_manager_key=io_manager_key,
@@ -342,15 +337,13 @@ def partitionshop_dbt_assets(context: AssetExecutionContext, dbt: DbtCliResource
         backfill_policy = BackfillPolicy.single_run()
 
     return multi_asset(
-        outs=outs,
         name=name,
-        internal_asset_deps=internal_asset_deps,
-        deps=deps,
+        specs=specs,
+        check_specs=check_specs,
+        can_subset=True,
         required_resource_keys=required_resource_keys,
         partitions_def=partitions_def,
-        can_subset=True,
         op_tags=resolved_op_tags,
-        check_specs=check_specs,
         backfill_policy=backfill_policy,
         retry_policy=retry_policy,
     )

python_modules/libraries/dagster-dbt/dagster_dbt/asset_specs.py

@@ -1,11 +1,9 @@
 from typing import Optional, Sequence
 
-import dagster._check as check
-from dagster import AssetDep, AssetKey, AssetSpec
+from dagster import AssetSpec
 from dagster._annotations import experimental
-from dagster._core.storage.tags import KIND_PREFIX
 
-from dagster_dbt.asset_utils import build_dbt_multi_asset_args
+from dagster_dbt.asset_utils import build_dbt_specs
 from dagster_dbt.dagster_dbt_translator import DagsterDbtTranslator, validate_translator
 from dagster_dbt.dbt_manifest import DbtManifestParam, validate_manifest
 from dagster_dbt.dbt_project import DbtProject
@@ -43,33 +41,17 @@ def build_dbt_asset_specs(
     manifest = validate_manifest(manifest)
     dagster_dbt_translator = validate_translator(dagster_dbt_translator or DagsterDbtTranslator())
 
-    (
-        _,
-        outs,
-        internal_asset_deps,
-        _,
-    ) = build_dbt_multi_asset_args(
+    specs, _ = build_dbt_specs(
         manifest=manifest,
-        dagster_dbt_translator=dagster_dbt_translator,
+        translator=dagster_dbt_translator,
         select=select,
         exclude=exclude or "",
         io_manager_key=None,
         project=project,
     )
 
-    specs = [
-        asset_out.to_spec(
-            key=check.inst(asset_out.key, AssetKey),
-            deps=[AssetDep(asset=dep) for dep in internal_asset_deps.get(output_name, set())],
-            additional_tags={f"{KIND_PREFIX}dbt": ""},
-            partitions_def=None,
-        )
+    return [
         # Allow specs to be represented as external assets by adhering to external asset invariants.
-        ._replace(
-            skippable=False,
-            code_version=None,
-        )
-        for output_name, asset_out in outs.items()
+        spec.replace_attributes(skippable=False, code_version=None)
+        for spec in specs
     ]
-
-    return specs