43 lines
1.4 KiB
PL/PgSQL
43 lines
1.4 KiB
PL/PgSQL
-- Preserve one artifact row per immutable storage object identity.
|
|
-- PostgreSQL 15+. Migrations 008-010 remain immutable.
|
|
|
|
BEGIN;
|
|
|
|
DO $$
|
|
BEGIN
|
|
IF current_database() <> 'booking_test' THEN
|
|
RAISE EXCEPTION
|
|
'ARR artifact identity migration is allowed only in booking_test';
|
|
END IF;
|
|
IF to_regclass('ingestion.artifacts') IS NULL
|
|
OR to_regclass('ingestion.result_submissions') IS NULL THEN
|
|
RAISE EXCEPTION
|
|
'ARR migrations 008 through 010 must be applied first';
|
|
END IF;
|
|
IF NOT EXISTS (
|
|
SELECT 1
|
|
FROM pg_constraint
|
|
WHERE conrelid = 'ingestion.artifacts'::regclass
|
|
AND conname = 'artifacts_kind_hash_unique'
|
|
) THEN
|
|
RAISE EXCEPTION
|
|
'ARR artifact identity migration is already applied or the source schema is invalid';
|
|
END IF;
|
|
IF to_regclass('ingestion.artifacts_kind_hash_idx') IS NOT NULL THEN
|
|
RAISE EXCEPTION
|
|
'ARR artifact identity lookup index already exists';
|
|
END IF;
|
|
END;
|
|
$$;
|
|
|
|
ALTER TABLE ingestion.artifacts
|
|
DROP CONSTRAINT artifacts_kind_hash_unique;
|
|
|
|
CREATE INDEX artifacts_kind_hash_idx
|
|
ON ingestion.artifacts (artifact_kind, sha256);
|
|
|
|
COMMENT ON INDEX ingestion.artifacts_kind_hash_idx IS
|
|
'Non-unique content lookup. Equal bytes may belong to different immutable OSS object identities and processing runs.';
|
|
|
|
COMMIT;
|