feat: DLQ redrive tooling (ADR-0026)#8
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…R-0026) Redrive(ctx, transport, dlq, opts): reads dead-lettered messages, resets each (strip dead_letter, attempts->0, preserve job/trace_id/data/meta) and re-publishes to its dead_letter.original_queue or a chosen ToQueue. Options: ToQueue (sandbox replay), Max, DryRun (inspect+restore), Select (filter). Drains-then-processes; acks a DLQ message only after a successful re-publish; restores undecodable bodies. Pure transport+codec, no new dependency. Replay-Bypass header is a documented phase two.
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The operator tool the error-handling contract explicitly deferred: "Re-driving messages from the DLQ back to the source queue is an operator/tooling concern for v1." Implements ADR-0026.
What
Redrive(ctx, transport, dlq, opts)— reads dead-lettered messages off a DLQ and re-publishes each to itsdead_letter.original_queue(oropts.ToQueue), reset for reprocessing: thedead_letterblock is stripped andattemptsreset to 0, whilejob,trace_id,dataandmetaare preserved verbatim.ToQueue— sandbox/redirect replay (the v1 safe-replay answer).DryRun— inspect and report the plan; every message is restored unchanged.Select— pick which messages to redrive (by reason, URN, …).Max— cap how many are pulled.Drains-then-processes so restored messages aren't re-encountered; acks a DLQ message only after a successful re-publish; restores undecodable bodies rather than dropping them. Built on the existing
Transport+ codec — no new dependency, and the envelope stays frozen (GR-1).Tests
8 tests via
InMemoryTransport(to-source, sandbox, dry-run, select, max, publish-failure-restores, no-dead_letter fallback, undecodable restored). Coverage 93%,-raceclean.Follow-up
The Replay-Bypass guard (a
bq-replay-bypasstransport header surfaced to handlers so a replay can skip external side-effects) is a documented phase two — it touches the runtime + every transport, like ADR-0025'straceparentfollow-up.🤖 Generated with Claude Code