tegwick
eb649dd747
AUDIT-WP-0004 T01, T02, T07. T01 - ingestion wrote to SQLite directly and never called the AuditBackend contract, so a 202 meant a row existed rather than that a backend with a declared retention policy had accepted the event. Adds IdempotentAuditBackend to the contract: duplicate detection lives inside the backend so custody and idempotency state share a transaction and cannot diverge. SQLiteAuditBackend implements it with WAL, synchronous=FULL and a busy timeout. Ingestion now refuses any backend declaring durable=False, so the development file backend cannot silently become the production sink. The atomicity claim was tested rather than asserted, and the first attempt failed: with a single shared connection, 16 racing submissions of one event told two callers they were first. Storage was correct but the response was not. Fixed with per-thread connections and BEGIN IMMEDIATE around the insert/read pair, and locked in by a test. T02 - storage errors previously escaped the handler with start_response never called, and the auth check sat outside the try block so a non-ASCII Authorization header crashed the request. Adds a catch-all, maps conflict to 409, backend unavailability to 503 and unexpected faults to 500, and documents the full response contract with the retry semantics each status implies, since senders key their behaviour off it. T07 - ingestion tests 2 -> 23, suite 15 -> 36. accepted_at is now UTC rather than local time, and naive timestamps are rejected instead of silently assumed. Remaining in WP-0004: T03 tenant/source binding, T04 redaction policy, T05 operator read surface, T06 production serving layer. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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| id | type | title | domain | repo | status | owner | topic_slug | created | updated | depends_on | state_hub_workstream_id | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AUDIT-WP-0005 | workplan | Deploy audit-core on Railiance with durable Postgres custody | infotech | audit-core | proposed | codex | netkingdom | 2026-08-10 | 2026-08-10 |
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7b24a844-c9f2-4d2d-ac7d-20978bdf6b38 |
AUDIT-WP-0005 - Postgres store and production deployment
Goal
Put audit-core into production on Railiance with PostgreSQL as the custody store, and prove the delivery path end to end.
This is first on the critical path: email-connect delivery, OpenBao sender credentials, the user-engine runtime integrations, and the live failure matrix all sit downstream of a receiver that actually holds evidence.
Dependencies
- AUDIT-WP-0004 — the receiver must route through the backend contract and return deliberate status codes before a Postgres backend is worth writing behind it, and before a failure matrix can distinguish a correct refusal from a crash.
- RAPP-POSTGRES-WP-0002 — the database, the tenancy model, and the credential lane. T01 below can be drafted against the model as soon as RAPP-POSTGRES-WP-0002-T01 settles it; T02 needs a provisioned database.
Boundaries
This workplan owns the Postgres backend implementation, audit-core's deployment, and the live verification. It does not own the database platform, its tenancy model, or its backup machinery — those belong to rapp-postgres. Where audit-core needs a guarantee from the platform, it states the requirement and consumes it; it does not implement it here.
T01 - Implement the Postgres audit backend
id: AUDIT-WP-0005-T01
status: todo
priority: high
state_hub_task_id: "b1601d0b-922a-40f7-92c0-ea06af6c4468"
Implement AuditBackend against PostgreSQL, declaring an honest
RetentionPolicy — the custody class, retention window, and whether
immutability and tamper evidence are genuinely provided rather than aspired
to. If the schema does not prevent an operator from silently editing a
recorded event, the policy must not claim immutable.
Push idempotency into the database rather than a read-then-write in application code: an insert conflicting on event ID must resolve atomically into duplicate-accepted or conflict, with no window where two concurrent identical events both write. Store the payload hash for conflict detection.
Handle connection lifecycle properly — pooling, reconnection after a database restart, and a bounded statement timeout so a stalled write surfaces as unavailable instead of hanging the request.
Own the migrations. The consuming service owns its schema; rapp-postgres owns the space it runs in.
Done when the backend passes the same contract tests as the existing backends, concurrent duplicate submissions produce exactly one record, and a database restart mid-write does not produce an acknowledged-but-absent event.
T02 - Provision storage through the platform lane
id: AUDIT-WP-0005-T02
status: todo
priority: high
state_hub_task_id: "831b2472-0d80-4369-a5e3-eb08ef3526b1"
Declare audit-core's database requirement against rapp-postgres and take delivery of a least-privilege runtime role through the OpenBao lane. The runtime role connects; a separate role runs migrations; neither owns more than it needs.
Verify audit-core's side of the isolation model: the runtime credential reaches audit-core's data and nothing else, and rotation completes without a delivery gap.
Done when audit-core runs against a provisioned database using a credential it never received as a literal, and rotating that credential does not drop events.
T03 - Deploy the receiver
id: AUDIT-WP-0005-T03
status: todo
priority: high
state_hub_task_id: "598af2ac-e772-4a4e-9a65-dde9d4ca167f"
Publish an immutable image — base pinned by digest, not a mutable tag, and labelled with the build commit — and deploy on railiance01 with a Service, health and readiness probes wired to the checks from WP-0004-T01, resource requests and limits, a restricted security context, and a default-deny NetworkPolicy admitting only user-engine as sender and the operator path for reads.
State the rollback position: which image digest and which schema version the deployment can return to, and whether the migration in T01 is reversible. A rollback plan that assumes reversible migrations without checking is not a plan.
The container currently runs as uid 10001 and expects a writable /data; once
custody is in Postgres that path should carry no durable state at all. Confirm
nothing of value is left on the pod filesystem.
Done when the receiver is reachable only by its declared peers, survives pod restart and rescheduling without loss, and has a tested path back to the previous version.
T04 - Migrate existing SQLite records
id: AUDIT-WP-0005-T04
status: todo
priority: medium
state_hub_task_id: "9010fb4a-a1b8-4ef7-b143-e33ca7cc0619"
Any events accepted by the pre-production SQLite receiver are audit records and cannot simply be dropped. Move them into the Postgres store with their original identifiers, timestamps, and payload hashes intact, or record an explicit decision that they are development artifacts with no custody value.
Whichever holds, it must be written down — silently discarding accepted audit events is the exact failure this service is meant to make impossible.
Done when the disposition of every pre-production record is either migrated and verified, or explicitly and justifiably discarded.
T05 - Run the live failure matrix
id: AUDIT-WP-0005-T05
status: todo
priority: high
state_hub_task_id: "1da30fec-b9f1-4be0-b42c-15797a8c4392"
Exercise the deployed path: successful delivery; receiver timeout and unavailability; bounded user-engine retry against each documented status code; dead-letter visibility; operator replay and duplicate replay; redaction; and correlation lookup. Include a database failover or restart during active ingestion, and a credential rotation during active ingestion.
The controlling assertion is that one source outbox event produces exactly one durable normalized event across retries, replay, and infrastructure disruption — no loss, no duplication.
Hand non-secret evidence back to NK-WP-0024.
Done when the matrix has been run against the deployed system and each outcome recorded, including any case where behaviour differed from the documented contract.
T06 - Operational handover
id: AUDIT-WP-0005-T06
status: todo
priority: medium
state_hub_task_id: "0856c80d-abe1-4bff-ba8d-87295cf76819"
Document what an operator needs: how to look up an event by correlation ID, how to inspect and replay dead-lettered events, how to rotate the sender credential, what the alert conditions mean, and how to restore audit data from a rapp-postgres backup.
Verify audit-core's recovery requirement against what rapp-postgres actually provides — the retention window audit-core declares must not exceed the retention the platform guarantees.
Done when the runbook exists and the restore path has been walked once.