ktx/python/ktx-sl/semantic_layer/__main__.py
Andrey Avtomonov f561bfa850 refactor(sl): split overlay columns from column_overrides and enforce TS/Python wire contract
Overlay sources now have two distinct collections: `columns:` for computed
columns (requiring `expr` + `type`) and `column_overrides:` for metadata
patches to inherited manifest columns. Composing or loading an overlay that
mixes the two — or references an unknown column — fails with a typed error.

Introduce `ResolvedSemanticLayerSource` / `resolvedSourceSchema` /
`toResolvedWire` as the strict shape sent to the Python engine, and add a
schema contract test that diffs Zod against the Pydantic JSON schema dumped
by `python -m semantic_layer dump-schema`. `SourceDefinition` is now
`extra="forbid"` on the Python side.

`loadAllSources` surfaces per-file load errors instead of swallowing them,
so validation/query paths can report manifest shard parse failures.
2026-05-15 00:36:52 +02:00

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494 B
Python

from __future__ import annotations
import json
import sys
from semantic_layer.cli import main as cli_main
from semantic_layer.models import SourceDefinition
def dump_schema() -> None:
json.dump(
SourceDefinition.model_json_schema(), sys.stdout, indent=2, sort_keys=True
)
sys.stdout.write("\n")
if __name__ == "__main__":
if len(sys.argv) > 1 and sys.argv[1] in {"dump-schema", "schema"}:
sys.argv.pop(1)
dump_schema()
else:
cli_main()