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Josh Creek
67609d71c0
Add migrations.Rollback(ctx, db, dir, steps): reverses the N most recently applied migrations, newest first, each in its own committed transaction under the same advisory lock Apply uses. Down SQL lives in migrations/down/<version>.sql (a subdirectory, so Apply's *.sql glob over the main directory is untouched); a missing down file for a migration being rolled back is a hard error rather than a silent partial reversal. Wire it into cmd/migrate as --rollback=N. Add down files for all six existing migrations, each dropping objects in FK-safe reverse dependency order. Adversarial review: could not run the new integration test (TestPostgreSQLMigrationsRollBackAndReapplyCleanly, gated behind COSMIC_CLASH_POSTGRES_DSN / scripts/run_postgres_integration.sh) against a real database in this sandbox - Docker Desktop's own overlayfs ran out of space pulling postgres:17-alpine, unrelated to this change. Verified instead by hand-tracing every DROP against its forward migration's FK graph, confirming Apply's directory glob does not pick up the down/ subdirectory, and a clean go build/vet/test -tags integration. Worth an explicit real run before this is trusted in CI.
19 lines
728 B
SQL
19 lines
728 B
SQL
-- Down migration for 0001_initial.sql. Tables drop in FK-safe reverse
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-- dependency order (a child table always drops before anything it
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-- references); dropping a table drops its own indexes with it.
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DROP TABLE IF EXISTS audit_events;
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DROP TABLE IF EXISTS outbox;
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DROP TABLE IF EXISTS result_receipts;
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DROP TABLE IF EXISTS penalties;
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DROP TABLE IF EXISTS ranked_season_rollovers;
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DROP TABLE IF EXISTS seasons;
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DROP TABLE IF EXISTS ratings;
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DROP TABLE IF EXISTS match_participants;
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DROP TABLE IF EXISTS matches;
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DROP TABLE IF EXISTS proposal_participants;
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DROP TABLE IF EXISTS proposals;
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DROP TABLE IF EXISTS queue_tickets;
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DROP TABLE IF EXISTS idempotency_keys;
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DROP TABLE IF EXISTS sessions;
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DROP TABLE IF EXISTS identities;
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