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shankar0123
037876fa0f
Sprint 2 unified-master-audit closure. Pre-fix the scheduler invoked
ClaimPendingJobs(ctx, "", 0). limit:0 loads every Pending row in a
single transaction — a 100K-job burst (cert-fleet sweep, post-outage
recovery, large agent-fleet first boot) marshalled the full queue
into process memory before boundedFanOut's semaphore could back-
pressure the upstream CAs.
Fix:
- SchedulerConfig.JobClaimLimit (env CERTCTL_SCHEDULER_JOB_CLAIM_LIMIT,
default 1000). ≤0 normalised to 1000 in SetClaimLimit — fail-safe
vs. legacy unlimited semantics.
- JobService.claimLimit threaded into the existing
ProcessPendingJobs flow; ClaimPendingJobs(ctx, "", s.claimLimit).
- cmd/server/main.go wires jobService.SetClaimLimit(cfg.Scheduler.JobClaimLimit).
- 'processing pending jobs' log line now includes claim_limit so
operators can spot the cap engaging (count == claim_limit ⇒
queue is running ahead of fan-out; bump CERTCTL_SCHEDULER_JOB_CLAIM_LIMIT
or CERTCTL_RENEWAL_CONCURRENCY).
- Test wiring keeps the legacy zero-value (unlimited) for byte-
for-byte compatibility with the existing 600+ JobService unit
tests — only production code goes through SetClaimLimit.
Regression coverage:
- mockJobRepo.LastClaimLimit records the limit passed through
ClaimPendingJobs so tests can pin the propagation.
- TestProcessPendingJobs_RespectsClaimLimit: 10 Pending rows,
SetClaimLimit(3), expect exactly 3 transition to Running plus
LastClaimLimit=3 on the mock.
- TestSetClaimLimit_NormalisesNonPositive: 0/-1/-1000 all
normalise to 1000.
Closes SCALE-001.