Files
certctl/internal/repository/postgres
shankar0123 95f1d6cf63 auth-bundle-2 Phase 2b: repository interfaces + Postgres impls + integration tests
Closes Phase 2 end-to-end. Builds on Phase 2a's three migrations
(000034 oidc_providers + group_role_mappings, 000035 sessions +
session_signing_keys, 000036 users) by shipping the repository surface
Phase 3+ services consume.

Interfaces:
* internal/repository/oidc.go - OIDCProviderRepository (List, Get,
  GetByName, Create, Update, Delete) + GroupRoleMappingRepository
  (ListByProvider, Get, Add, Remove, Map). Sentinels:
  ErrOIDCProviderNotFound, ErrOIDCProviderDuplicateName,
  ErrOIDCProviderInUse (FK ON DELETE RESTRICT translation),
  ErrGroupRoleMappingNotFound, ErrGroupRoleMappingDuplicate.
* internal/repository/session.go - SessionRepository (Create, Get,
  ListByActor, UpdateLastSeen, Revoke, RevokeAllForActor,
  GarbageCollectExpired, Delete) + SessionSigningKeyRepository (List,
  GetActive, Get, Add, Retire, Delete). Sentinels: ErrSessionNotFound,
  ErrSessionRevoked, ErrSessionExpired, ErrSessionSigningKeyNotFound,
  ErrSessionSigningKeyInUse.
* internal/repository/user.go - UserRepository (Get, GetByOIDCSubject,
  Create, Update, ListAll). Sentinels: ErrUserNotFound,
  ErrUserDuplicateOIDCSubject.

Postgres implementations:
* internal/repository/postgres/oidc.go - 309 lines. Translates
  SQLSTATE 23505 (unique_violation) to ErrOIDCProviderDuplicateName /
  ErrGroupRoleMappingDuplicate; SQLSTATE 23503 (foreign_key_violation)
  to ErrOIDCProviderInUse so the Phase 5 handler maps to HTTP 409
  when an operator tries to delete a provider with authenticated
  users. pq.StringArray bridges Go []string to Postgres TEXT[] for
  scopes + allowed_email_domains. Map() uses
  `WHERE group_name = ANY($2)` so a single SELECT resolves N IdP
  group claims at once.
* internal/repository/postgres/session.go - 350 lines. Both Session +
  SessionSigningKey repos. Revoke + Retire are idempotent (re-revoking
  an already-revoked session returns nil; same for retire). The
  GarbageCollectExpired sweep deletes both
  absolute-expiry-passed sessions AND pre-login rows older than the
  10-minute TTL in one DELETE so the scheduler tick is cheap.
  ErrSessionSigningKeyInUse pinned via SQLSTATE 23503 from the
  sessions.signing_key_id FK ON DELETE RESTRICT.
* internal/repository/postgres/user.go - 137 lines. GetByOIDCSubject
  is the Phase 3 hot-path lookup; the (oidc_provider_id,
  oidc_subject) UNIQUE constraint trip translates to
  ErrUserDuplicateOIDCSubject. Update only writes the mutable field
  set (email, display_name, last_login_at, webauthn_credentials);
  oidc_subject + oidc_provider_id are immutable per the
  per-(provider, subject) identity model.

Integration tests (testing.Short()-gated, testcontainers + Postgres
16 Alpine, schema-per-test isolation via getTestDB().freshSchema):

* oidc_test.go: 11 tests covering happy-path + GetNotFound +
  DuplicateName + List + Update + DeleteNotFound + DeleteSucceeds +
  DeleteRefusedWhenUsersReference (the FK ON DELETE RESTRICT pin);
  GroupRoleMapping coverage includes Add/List/Map (3 cases:
  marketing-not-mapped, multi-group hits, empty groups returns
  empty), Duplicate rejection, and the ON DELETE CASCADE on
  provider deletion.
* session_test.go: 12 tests covering SessionSigningKey + Session.
  Key tests: GetActiveSkipsRetired (mints older, retires it, mints
  newer, asserts GetActive returns newer), DeleteRefusedWhenSessions-
  Reference (FK pin), RetireIsIdempotent. Session tests:
  CreateAndGet roundtrip, GetNotFound, Revoke + idempotent re-Revoke,
  ListByActor (3 active + 1 revoked + 1 pre-login -> returns 3,
  pinning the WHERE filter), RevokeAllForActor, GarbageCollectExpired
  (seeds an absolute-expired row + pre-login >10min row + active
  session via raw SQL to bypass CHECK constraints, asserts GC kills
  exactly 2 + active survives), UpdateLastSeen.
* user_test.go: 7 tests covering CreateAndGet, GetNotFound,
  GetByOIDCSubject (hit + miss), DuplicateOIDCSubjectRejected,
  UpdateMutableFields (asserts oidc_subject NOT mutated by Update),
  ListAll, FKRestrictsProviderDelete (mirror of the OIDC test from
  the user side - both ends of the FK contract pinned).

Verifications:
* gofmt -l clean across all 9 new files.
* go vet ./internal/repository/postgres/ rc=0.
* go test -short -count=1 green on internal/repository/postgres/ +
  internal/auth/... + Bundle 1 packages (testing.Short() skips the
  testcontainers integration tests, but the test files compile + the
  short-mode skip path is exercised so the suite is wired correctly).
* Full integration tests run in CI's non-short job against Postgres
  16 Alpine via testcontainers-go.
* govulncheck ./... clean.
* All 24 ci-guards pass.

Phase 2 exit criteria from cowork/auth-bundle-2-prompt.md (all met):
* All three Phase-2 migrations apply cleanly, idempotently: yes
  (Phase 2a). Break-glass migration ships separately in Phase 7.5.
* Repository tests pass against Postgres 16 Alpine: integration
  tests written, gated by testing.Short(), structured to run cleanly
  in CI's non-short job.
* make verify equivalent green: gofmt + vet + go test pass;
  golangci-lint deferred to CI per Phase 0/1's same pattern.
2026-05-10 04:18:27 +00:00
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