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trails/openspec/changes/federation-hardening/tasks.md
Ullrich Schäfer 711065586e
chore(federation-hardening): record group 5 verification status 
5.2 typecheck/lint/test pass locally; test:e2e is enforced by the
required "E2E Tests" CI check. 5.1 is a post-deploy staging check
(fan-out survives a restart; a blocked domain is inert both ways) —
left open with the runbook commands in the PR body.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-13 23:13:04 +02:00

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1. Durable queue

  • 1.1 Implement federation-queue.server.ts: Fedify MessageQueue over pg-boss (enqueue with delay, listen loop), mirroring the PostgresKvStore adapter pattern
  • 1.2 Swap InProcessMessageQueue for it in federation.server.ts; document the two-layer queueing (fan-out jobs + Fedify queue) in a code comment
  • 1.3 Tests: enqueue/delay/consume roundtrip; simulated restart (new listener picks up previously enqueued messages)

2. Replay defense

  • 2.1 Add federation_processed_activities table (activity IRI PK, received_at) + migration; insert-or-drop check in inbox handlers before side effects
  • 2.2 30-day TTL sweep in the jobs worker
  • 2.3 Tests: duplicate Like/Delete/Update dropped as no-ops; Create double-delivery still covered by remoteOriginIri constraint

3. Blocklist

  • 3.1 Add federation_blocked_instances table + migration; exact-host check helper
  • 3.2 Enforce at inbox (silent 202 drop + counter), delivery enqueue (filter recipients), and outbox poll/actor fetch (refuse)
  • 3.3 Document the operator procedure (SQL insert/delete) in the ops docs; tests for all three boundaries

4. Protocol doc & observability

  • 4.1 Write FEDERATION.md (repo root): NodeInfo, actors/WebFinger, object + activity types with JSON examples, addressing, signatures + dedup expectations, retry policy, moderation semantics; link from README and docs
  • 4.2 Add federation_delivery_total{outcome}, federation_queue_depth, federation_inbox_dropped_total{reason} metrics + journal dashboard row

5. Verification

  • 5.1 Staging check: queue a fan-out, restart the journal container, confirm deliveries complete; block a test domain and verify both directions — post-deploy step, run once the change is on staging (see PR description for the exact commands)
  • 5.2 Run pnpm typecheck && pnpm lint && pnpm test && pnpm test:e2e — typecheck/lint/test green locally; test:e2e enforced by the required "E2E Tests" CI check on every PR