Add Stage 1 artifact staging boundary

changelog.d/1048.added

@@ -0,0 +1 @@
+Added a Stage 1 dataset-build context, artifact stager, and diagnostic artifact writers for the pipeline handoff.

modal_app/data_build.py

@@ -1,5 +1,4 @@
 import functools
-import json
 import os
 import shutil
 import subprocess
@@ -22,14 +21,17 @@
 
 from modal_app.images import cpu_image as image  # noqa: E402
 from policyengine_us_data.__version__ import __version__ as DATA_PACKAGE_VERSION  # noqa: E402
-from policyengine_us_data.build_datasets import stage_1_script_outputs  # noqa: E402
+from policyengine_us_data.build_datasets import (  # noqa: E402
+    DatasetBuildContext,
+    DatasetBuildOutputContractBuilder,
+    PipelineArtifactStager,
+    stage_1_script_outputs,
+    write_stage_1_diagnostics,
+)
 from policyengine_us_data.pipeline_metadata import pipeline_node  # noqa: E402
 from policyengine_us_data.pipeline_schema import PipelineNode  # noqa: E402
 from policyengine_us_data.stage_contracts import (  # noqa: E402
-    DATASET_BUILD_OUTPUT_CONTRACT_FILENAME,
     StageContract,
-    build_dataset_build_output_contract,
-    write_contract,
 )
 from policyengine_us_data.utils.run_context import (  # noqa: E402
     CANDIDATE_VERSION_ENV,
@@ -484,13 +486,18 @@ def write_dataset_build_contract(
     skip_enhanced_cps: bool,
     skip_stage_5: bool = False,
     package_version: str = DATA_PACKAGE_VERSION,
+    branch: str = "unknown",
+    diagnostics: tuple = (),
 ) -> StageContract:
     """Write the Stage 1 semantic handoff contract next to copied artifacts."""
-    contract = build_dataset_build_output_contract(
-        artifacts_dir=artifacts_dir,
+    context = DatasetBuildContext(
         run_id=run_id,
+        branch=branch,
         code_sha=code_sha,
         package_version=package_version,
+        artifacts_dir=artifacts_dir,
+    )
+    return DatasetBuildOutputContractBuilder(context=context).write(
         checkpoint_stats=checkpoint_stats,
         started_at=started_at,
         completed_at=completed_at,
@@ -499,12 +506,8 @@ def write_dataset_build_contract(
         stage_only=stage_only,
         skip_enhanced_cps=skip_enhanced_cps,
         skip_stage_5=skip_stage_5,
+        diagnostics=diagnostics,
     )
-    write_contract(
-        contract,
-        artifacts_dir / DATASET_BUILD_OUTPUT_CONTRACT_FILENAME,
-    )
-    return contract
 
 
 @app.function(
@@ -529,7 +532,15 @@ def write_dataset_build_contract(
         status="current",
         stability="moving",
         pathways=["data_build", "orchestration"],
-        artifacts_out=["source_imputed_*.h5", "policy_data.db"],
+        artifacts_out=[
+            "dataset_build_output.json",
+            "dataset_inventory.json",
+            "source_dataset_schema_summary.json",
+            "target_database_schema_summary.json",
+            "source_imputed_stratified_extended_cps_2024.h5",
+            "source_imputed_stratified_extended_cps.h5",
+            "policy_data.db",
+        ],
         validation_commands=["uv run pytest tests/unit/test_modal_data_build.py"],
     )
 )
@@ -810,41 +821,32 @@ def build_datasets(
     artifacts_dir = Path(PIPELINE_MOUNT) / "artifacts"
     if run_id:
         artifacts_dir = artifacts_dir / run_id
-    artifacts_dir.mkdir(parents=True, exist_ok=True)
-
-    # Copy all intermediate H5 datasets for lineage tracing
-    for output in SCRIPT_OUTPUTS.values():
-        paths = output if isinstance(output, list) else [output]
-        for p in paths:
-            src = Path(p)
-            if src.suffix == ".h5" and src.exists():
-                shutil.copy2(src, artifacts_dir / src.name)
-                print(
-                    f"  Copied {src.name} ({src.stat().st_size / 1024 / 1024:.1f} MB)"
-                )
-
-    # Yearless alias for pipeline consumers (remote_calibration_runner, local_area)
-    si = artifacts_dir / "source_imputed_stratified_extended_cps_2024.h5"
-    if si.exists():
-        shutil.copy2(si, artifacts_dir / "source_imputed_stratified_extended_cps.h5")
-
-    shutil.copy2(
-        "policyengine_us_data/storage/calibration/policy_data.db",
-        artifacts_dir / "policy_data.db",
+    build_context = DatasetBuildContext(
+        run_id=run_id,
+        branch=branch,
+        code_sha=commit,
+        package_version=version,
+        artifacts_dir=artifacts_dir,
     )
-    cal_weights = Path("policyengine_us_data/storage/calibration_weights.npy")
-    if cal_weights.exists():
-        shutil.copy2(
-            cal_weights,
-            artifacts_dir / "calibration_weights.npy",
+    stager = PipelineArtifactStager(context=build_context)
+    staged_paths = stager.stage_declared_artifacts(
+        skip_enhanced_cps=skip_enhanced_cps,
+        skip_stage_5=skip_stage_5,
+    )
+    for staged_path in staged_paths:
+        print(
+            f"  Copied {staged_path.name} "
+            f"({staged_path.stat().st_size / 1024 / 1024:.1f} MB)"
         )
-        print("  Copied calibration_weights.npy")
-    shutil.copy2(log_path, artifacts_dir / "build_log.txt")
     checkpoint_snapshot = checkpoint_stats.snapshot()
-    with open(artifacts_dir / "data_build_checkpoint_stats.json", "w") as f:
-        json.dump(checkpoint_snapshot, f, indent=2, sort_keys=True)
+    stager.write_checkpoint_stats(checkpoint_snapshot)
     log_file.close()
     completed_at_dt = datetime.now(timezone.utc)
+    diagnostics = write_stage_1_diagnostics(
+        context=build_context,
+        skip_enhanced_cps=skip_enhanced_cps,
+        skip_stage_5=skip_stage_5,
+    )
     write_dataset_build_contract(
         artifacts_dir=artifacts_dir,
         run_id=run_id,
@@ -858,6 +860,8 @@ def build_datasets(
         skip_enhanced_cps=skip_enhanced_cps,
         skip_stage_5=skip_stage_5,
         package_version=version,
+        branch=branch,
+        diagnostics=diagnostics,
     )
     pipeline_volume.commit()
     print("Pipeline artifacts committed to shared volume")

policyengine_us_data/build_datasets/__init__.py

@@ -5,23 +5,45 @@
     STAGE_1_ARTIFACT_SPECS,
     stage_1_artifact_specs,
     stage_1_contract_artifact_specs,
+    stage_1_diagnostic_artifact_specs,
+    stage_1_pipeline_artifact_specs,
     stage_1_script_outputs,
 )
+from .context import DatasetBuildContext
+from .contracts import DatasetBuildOutputContractBuilder
+from .diagnostics import (
+    ARTIFACT_SCHEMA_VERSION,
+    DatasetInventoryWriter,
+    SourceDatasetSchemaSummaryWriter,
+    TargetDatabaseSchemaSummaryWriter,
+    write_stage_1_diagnostics,
+)
 from .specs import (
     DatasetBuildStepSpec,
     STAGE_1_BUILD_DATASETS,
     STAGE_1_BUILD_STEP_SPECS,
     stage_1_step_specs,
 )
+from .staging import PipelineArtifactStager
 
 __all__ = [
+    "ARTIFACT_SCHEMA_VERSION",
     "DatasetArtifactSpec",
+    "DatasetBuildContext",
+    "DatasetBuildOutputContractBuilder",
     "DatasetBuildStepSpec",
+    "DatasetInventoryWriter",
+    "PipelineArtifactStager",
     "STAGE_1_ARTIFACT_SPECS",
     "STAGE_1_BUILD_DATASETS",
     "STAGE_1_BUILD_STEP_SPECS",
+    "SourceDatasetSchemaSummaryWriter",
+    "TargetDatabaseSchemaSummaryWriter",
     "stage_1_artifact_specs",
     "stage_1_contract_artifact_specs",
+    "stage_1_diagnostic_artifact_specs",
+    "stage_1_pipeline_artifact_specs",
     "stage_1_script_outputs",
     "stage_1_step_specs",
+    "write_stage_1_diagnostics",
 ]

policyengine_us_data/build_datasets/artifacts.py

@@ -26,6 +26,9 @@ class DatasetArtifactSpec:
     required_for_stage_2: bool = False
     yearless_alias: bool = False
     contract_output: bool = True
+    pipeline_output: bool = True
+    diagnostic_output: bool = False
+    diagnostic_kind: str | None = None
     skip_when_enhanced_cps_skipped: bool = False
     skip_when_stage_5_skipped: bool = False
 
@@ -53,6 +56,7 @@ class DatasetArtifactSpec:
         storage_path="policyengine_us_data/storage/uprating_factors.csv",
         script_path=_UPRATING_SCRIPT,
         contract_output=False,
+        pipeline_output=False,
     ),
     DatasetArtifactSpec(
         filename="acs_2022.h5",
@@ -120,6 +124,7 @@ class DatasetArtifactSpec:
         ),
         script_path=_ENHANCED_CPS_SCRIPT,
         contract_output=False,
+        pipeline_output=False,
         skip_when_enhanced_cps_skipped=True,
     ),
     DatasetArtifactSpec(
@@ -130,6 +135,7 @@ class DatasetArtifactSpec:
         storage_path="calibration_log.csv",
         script_path=_ENHANCED_CPS_SCRIPT,
         contract_output=False,
+        pipeline_output=False,
         skip_when_enhanced_cps_skipped=True,
     ),
     DatasetArtifactSpec(
@@ -184,18 +190,62 @@ class DatasetArtifactSpec:
         storage_path="policyengine_us_data/storage/calibration/policy_data.db",
         required_for_stage_2=True,
     ),
+    DatasetArtifactSpec(
+        filename="calibration_weights.npy",
+        logical_name="calibration_weights",
+        artifact_family="legacy_optional_weight",
+        substage_id="1g_stage_base_datasets",
+        storage_path="policyengine_us_data/storage/calibration_weights.npy",
+        required=False,
+        contract_output=False,
+    ),
     DatasetArtifactSpec(
         filename="build_log.txt",
         logical_name="build_log",
         artifact_family="log",
         substage_id="1g_stage_base_datasets",
+        storage_path="build_log.txt",
     ),
     DatasetArtifactSpec(
         filename="data_build_checkpoint_stats.json",
         logical_name="data_build_checkpoint_stats",
         artifact_family="execution_metadata",
         substage_id="1g_stage_base_datasets",
     ),
+    DatasetArtifactSpec(
+        filename="dataset_inventory.json",
+        logical_name="dataset_inventory",
+        artifact_family="diagnostic",
+        substage_id="1g_stage_base_datasets",
+        required=False,
+        contract_output=False,
+        pipeline_output=False,
+        diagnostic_output=True,
+        diagnostic_kind="dataset_inventory",
+    ),
+    DatasetArtifactSpec(
+        filename="source_dataset_schema_summary.json",
+        logical_name="source_dataset_schema_summary",
+        artifact_family="diagnostic",
+        substage_id="1f_source_imputation",
+        required=False,
+        contract_output=False,
+        pipeline_output=False,
+        diagnostic_output=True,
+        diagnostic_kind="source_dataset_schema_summary",
+        skip_when_stage_5_skipped=True,
+    ),
+    DatasetArtifactSpec(
+        filename="target_database_schema_summary.json",
+        logical_name="target_database_schema_summary",
+        artifact_family="diagnostic",
+        substage_id="1g_stage_base_datasets",
+        required=False,
+        contract_output=False,
+        pipeline_output=False,
+        diagnostic_output=True,
+        diagnostic_kind="target_database_schema_summary",
+    ),
 )
 
 
@@ -223,8 +273,12 @@ class DatasetArtifactSpec:
         "small_enhanced_cps_2024.h5",
         "source_imputed_stratified_extended_cps.h5",
         "policy_data.db",
+        "calibration_weights.npy",
         "build_log.txt",
         "data_build_checkpoint_stats.json",
+        "dataset_inventory.json",
+        "source_dataset_schema_summary.json",
+        "target_database_schema_summary.json",
     ],
     validation_commands=["uv run pytest tests/unit/test_build_dataset_specs.py"],
 )
@@ -240,6 +294,18 @@ def stage_1_contract_artifact_specs() -> tuple[DatasetArtifactSpec, ...]:
     return tuple(spec for spec in STAGE_1_ARTIFACT_SPECS if spec.contract_output)
 
 
+def stage_1_pipeline_artifact_specs() -> tuple[DatasetArtifactSpec, ...]:
+    """Return artifact specs staged into the run-scoped pipeline directory."""
+
+    return tuple(spec for spec in STAGE_1_ARTIFACT_SPECS if spec.pipeline_output)
+
+
+def stage_1_diagnostic_artifact_specs() -> tuple[DatasetArtifactSpec, ...]:
+    """Return diagnostic artifact specs emitted by Stage 1 writers."""
+
+    return tuple(spec for spec in STAGE_1_ARTIFACT_SPECS if spec.diagnostic_output)
+
+
 def stage_1_script_outputs() -> Mapping[str, ScriptOutput]:
     """Return the checkpoint output mapping consumed by Modal data-build."""
 
@@ -261,5 +327,7 @@ def stage_1_script_outputs() -> Mapping[str, ScriptOutput]:
     "ScriptOutput",
     "stage_1_artifact_specs",
     "stage_1_contract_artifact_specs",
+    "stage_1_diagnostic_artifact_specs",
+    "stage_1_pipeline_artifact_specs",
     "stage_1_script_outputs",
 ]