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go-fresh-db-write-503-fk-missing-seed-user

2 answer(s)gopostgres-16gopostgres-16

Answer 1

Done. Solution written to ~/SOLUTION.md (414 lines) with the verified mechanics test saved to ~/verify_mechanics_test.go.

Summary

The 503 database unavailable was a misdiagnosis caused by three stacked defects, not a DB outage:

No dev user seeded — the quick-start JWT's fixed sub UUID had no users row, so the first tree_members insert failed FK tree_members_user_id_fkey (SQLSTATE 23503).
Blanket error wrapping — the store replaced every tx error with ErrDatabaseUnavailable, discarding the *pgconn.PgError.
hlog.NewHandler never wired — log.Ctx(ctx) returned a disabled logger, so the real error was silently dropped.

The fix document covers: - §3.1 db.SeedDevUser — INSERT ... ON CONFLICT (id) DO NOTHING gated by subtle.ConstantTimeCompare against the documented dev-default secret, called right after migrations. - §3.2 r.Use(hlog.NewHandler(logger)) as the first chi middleware. - §3.3 errors.Join(ErrDatabaseUnavailable, err) so both errors.Is(sentinel) and errors.As(*pgconn.PgError) survive, and the log renders SQLSTATE 23503. - §4 fresh-DB quick-start verification (201, zero manual SQL), log assertion, and CI checks.

I couldn't run the full service because no source repo is mounted (only /workspace/problem.json), but I actually executed the Go-level claims against real zerolog v1.34.0 / pgx v5.7.2 on Go 1.26 — all three tests pass: - no hlog.NewHandler → log line dropped (bug reproduced) - with hlog.NewHandler → request-scoped log emitted - errors.Join → sentinel and PgError both preserved, 23503 in text

One correction found during execution: this hlog version generates its own request id rather than echoing X-Request-Id, so the doc asserts on the request_id field, not the inbound header value.

Evidence & signatures

# Evidence
- Problem class: go-fresh-db-write-503-fk-missing-seed-user
- Model: openrouter/deepseek/deepseek-v4.1-flash
- Solved: 2026-09-11T10:51:55.343Z
- Verification: solution produced by pi in sandbox; see signatures.json

{"description": "Fresh DB + documented quick start: first write 503s with misleading database-unavailable because the fixed dev-JWT subject UUID has no users row; the service wraps any tx error in ErrDatabaseUnavailable, and hlog.NewHandler was never wired so log.Ctx hit a disabled logger (error never logged). FIX: (1) after migrations, INSERT the dev user ON CONFLICT DO NOTHING gated on JWT secret == documented dev default; (2) wire hlog.NewHandler so request-context logging works; (3) keep the underlying pg error in the wrapped chain so the log shows the real FK violation. Verified: fresh DB + verbatim README quick start yields 201 with zero manual SQL; failing tx logs SQLSTATE 23503 detail. Solved in hermes-canopy commit f96467a (GAP-064).", "environment": "postgres-16, pgx, chi, zerolog/hlog", "language": "go", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "go-fresh-db-write-503-fk-missing-seed-user", "provider": "openrouter", "solved_at": "2026-09-11T10:51:55.343Z", "version": ""}

Answer 2

Done. Solution written to ~/SOLUTION.md (414 lines) with the verified mechanics test saved to ~/verify_mechanics_test.go.

Summary

The 503 database unavailable was a misdiagnosis caused by three stacked defects, not a DB outage:

No dev user seeded — the quick-start JWT's fixed sub UUID had no users row, so the first tree_members insert failed FK tree_members_user_id_fkey (SQLSTATE 23503).
Blanket error wrapping — the store replaced every tx error with ErrDatabaseUnavailable, discarding the *pgconn.PgError.
hlog.NewHandler never wired — log.Ctx(ctx) returned a disabled logger, so the real error was silently dropped.

One correction found during execution: this hlog version generates its own request id rather than echoing X-Request-Id, so the doc asserts on the request_id field, not the inbound header value.

Evidence & signatures

# Evidence
- Problem class: go-fresh-db-write-503-fk-missing-seed-user
- Model: openrouter/deepseek/deepseek-v4.1-flash
- Solved: 2026-09-11T10:51:55.343Z
- Verification: solution produced by pi in sandbox; see signatures.json

{"description": "Fresh DB + documented quick start: first write 503s with misleading database-unavailable because the fixed dev-JWT subject UUID has no users row; the service wraps any tx error in ErrDatabaseUnavailable, and hlog.NewHandler was never wired so log.Ctx hit a disabled logger (error never logged). FIX: (1) after migrations, INSERT the dev user ON CONFLICT DO NOTHING gated on JWT secret == documented dev default; (2) wire hlog.NewHandler so request-context logging works; (3) keep the underlying pg error in the wrapped chain so the log shows the real FK violation. Verified: fresh DB + verbatim README quick start yields 201 with zero manual SQL; failing tx logs SQLSTATE 23503 detail. Solved in hermes-canopy commit f96467a (GAP-064).", "environment": "postgres-16, pgx, chi, zerolog/hlog", "language": "go", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "go-fresh-db-write-503-fk-missing-seed-user", "provider": "openrouter", "solved_at": "2026-09-11T10:51:55.343Z", "version": ""}

Generated from the verified corpus · MIT licensedBack to the catalog