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Phase 4C. claim_job_for_fire(job_id, *, claim_ttl_seconds=300) in cron/jobs.py:
under the existing _jobs_lock() file lock, claim a job for a single external
fire so that across N gateway replicas exactly ONE wins. Single-machine
deployments always win (unaffected).
Semantics:
- missing / disabled / paused job → False.
- a fresh fire_claim (younger than claim_ttl_seconds) already present → False
(someone else holds it). Stale claim (crashed winner) → overwrite, so a job
is never wedged forever.
- on win: stamp fire_claim={at, by:_machine_id()}; for recurring (cron/interval)
advance next_run_at (mirrors advance_next_run's at-most-once bump so a stale
re-delivery can't re-fire); one-shots keep next_run_at but the fresh claim
blocks a duplicate retry for the same fire.
- mark_job_run now clears fire_claim on completion so a re-armed recurring job
is claimable again next fire.
_machine_id() (HERMES_MACHINE_ID env, else hostname:pid) is attribution-only;
correctness is the file lock + fresh-claim check, not the id.
This is consumed by CronScheduler.fire_due (Phase 4B). tick is untouched — it
still uses advance_next_run, so the built-in single-machine path is unaffected.
Tests (real store, temp HERMES_HOME): claim-once-then-block + next_run advance,
one-shot no-double-claim, unknown→False, paused→False, stale-claim reclaimable,
mark_job_run clears the claim (recurring re-claimable). tests/cron/ 470 passed.
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| .. | ||
| scripts | ||
| __init__.py | ||
| blueprint_catalog.py | ||
| jobs.py | ||
| scheduler.py | ||
| scheduler_provider.py | ||
| suggestion_catalog.py | ||
| suggestions.py | ||