feat(telemetry): log and report lock-acquisition contention at info #152
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…evel Surface lock-acquisition failures (another instance already running) at info level instead of Debug so the contention is visible in agent.log, and report the failed run immediately at the failure site so the backend records that a second invocation contended for the lock. reportFailedOnce is idempotent, so the deferred handler firing on the error return is a no-op.
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Pull request overview
This PR aims to make lock-acquisition contention visible in normal (info-level) logs and ensure the backend records a failed run immediately when the agent can’t acquire its instance lock.
Changes:
- Promotes lock-acquisition failure logging from debug to info (
log.Progress) so it appears inagent.log. - Triggers an immediate
reportFailedOnce(...)on lock-acquisition failure (in addition to the deferred error handler, which becomes a no-op due to idempotency).
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| // backend records that this invocation contended for the lock while one | ||
| // was already in flight. reportFailedOnce is idempotent, so the deferred | ||
| // handler that also fires on the error return is a no-op. | ||
| log.Progress("Lock acquisition failed (PID %d): %v — another instance is already running, exiting", os.Getpid(), err) |
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| // Another instance already holds the lock. Surface at info level (not | ||
| // Debug) so the contention is visible in agent.log, and report the | ||
| // failed run right here — don't wait for the deferred handler — so the | ||
| // backend records that this invocation contended for the lock while one | ||
| // was already in flight. reportFailedOnce is idempotent, so the deferred | ||
| // handler that also fires on the error return is a no-op. |
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