Until now the open-alert key was (host_id, kind, resolved_at IS NULL).
A host with two source groups both failing collapsed onto one
backup_failed row — second failure bumped last_seen_at and
overwrote the message but never re-fan-out. Operators saw one
alert that appeared to flap, not two distinct broken things.
Schema changes (column-level ALTER, no rebuild):
- 0015 jobs.source_group_id (FK → source_groups, ON DELETE SET NULL,
index). Populated for backup jobs in CreateJob.
- 0016 alerts.dedup_key (NOT NULL DEFAULT ''). The old alerts_open
partial index gets dropped and replaced with a UNIQUE partial
index on (host_id, kind, dedup_key) WHERE resolved_at IS NULL —
the index is now the actual dedup primitive.
Plumbing:
- RaiseOrTouch / AutoResolve / Alert struct gain dedup_key.
- engine.JobFinishedEvent gains SourceGroupID; handleJobFinished
passes it through for backup_failed only (forget/prune/check stay
repo-scoped with key='').
- ws.handler reads SourceGroupID off the freshly-loaded job row.
- dispatchJobWithPayload gains a *string sourceGroupID arg; the
per-group Run-now path and schedule.fire path pass &g.ID.
Test coverage: TestRaiseOrTouchDedupsPerSourceGroup proves two
distinct groups produce two distinct open alerts and that resolving
one does not auto-resolve the other.
Dev tool: cmd/_fake_alert gains -dedup-key flag.
Wires a 60s server-side ticker to the pure-logic maintenance.Decide
introduced in the previous commit. Decisions flow through a new
DispatchMaintenance method on *Server, which:
- skips offline hosts (no pending_runs queueing — maintenance is
not a backup, missed fires shouldn't pile up)
- silently skips prune when admin creds aren't bound
- pushes admin creds before prune, then dispatches with
RequiresAdminCreds=true (same as operator-driven prune)
- persists job rows with actor_kind="system"
Reshapes the forget wire payload from a single RetentionPolicy to a
ForgetGroups list (one tag + per-group keep-* per source group). The
agent walks the groups and runs `restic forget --tag <name> --keep-*`
once per group. Dead-code removed: CommandRunPayload.RetentionPolicy,
the old forget JSON-decode in cmd/agent, and the single-policy form of
restic.RunForget.
steve