fix(ci): rescue daily-regen from GitHub's silently dropped cron ticks#9649
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MarkusNeusinger wants to merge 10 commits into
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fix(ci): rescue daily-regen from GitHub's silently dropped cron ticks#9649MarkusNeusinger wants to merge 10 commits into
MarkusNeusinger wants to merge 10 commits into
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GitHub's scheduler has been dropping daily-regen.yml's schedule events in multi-day streaks since early June (e.g. only 5 scheduled runs in the last 13 days instead of ~130), while less-frequent crons in the same repo (watchdog-stuck-jobs, bot-serving-check) kept firing with their usual 2-3 h delay. Every run that did start succeeded, so nothing alarmed and the oldest specs simply stopped being refreshed. Two defences: - daily-regen's cron moves off the top of the hour (:00 -> :17), the documented high-load window in which GitHub delays/drops schedule events. - watchdog-stuck-jobs gains a cron-liveness section: if no daily-regen run (any trigger) has started for >10 h outside the 17-21 UTC Berlin-evening quiet window, it re-dispatches the workflow with default inputs, capping future starvation at roughly half a day. Also documents watchdog-stuck-jobs.yml in docs/workflows/overview.md, which had been missing from the workflow table. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
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Pull request overview
This PR improves the reliability of the repository’s scheduled “daily regen” maintenance by moving the daily-regen.yml cron away from GitHub’s top-of-hour overload window and adding a watchdog-based liveness rescue to re-dispatch the workflow if it appears starved.
Changes:
- Shift
daily-regen.ymlscheduled ticks from:00to:17on even UTC hours to reduce missedscheduleevents. - Extend
watchdog-stuck-jobs.ymlto detect prolonged absence ofdaily-regenruns and re-dispatch it outside the quiet window. - Document the updated scheduling behavior and watchdog responsibilities, and add a matching
CHANGELOG.mdentry.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
docs/workflows/overview.md |
Updates the workflow overview table to include watchdog-stuck-jobs.yml and clarifies the daily-regen.yml cadence/minute offset. |
CHANGELOG.md |
Adds an [Unreleased] fix entry describing the cron starvation mitigation and watchdog rescue. |
.github/workflows/watchdog-stuck-jobs.yml |
Adds a “cron-liveness” section to re-dispatch daily-regen.yml after >10h without a run outside the quiet window. |
.github/workflows/daily-regen.yml |
Moves the cron schedule off the top of the hour (to minute 17) and documents the rationale and watchdog rescue behavior. |
Review feedback: a manual daily-regen run on a non-default branch must not mask a starved main schedule, and startedAt is null while the newest run is still queued (which the previous query misread as 'no runs found'). Scope gh run list to --branch main and measure the gap from createdAt, which is always populated. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
Review feedback: integer-hour truncation could print '10h (> 10h)' when the real gap is 10h59m. Log h+mm so the message matches the threshold evaluation. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
Review feedback: the rescue keys off the newest run's createdAt, not whether a run has started. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
…under CET Review feedback: the 18-21 UTC window was documented in Berlin/CEST terms, but Actions cron is UTC year-round, so the local-time mapping shifts by an hour under winter time. Document the accepted drift in both daily-regen and the watchdog liveness guard. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
Review feedback: 18/20 UTC are also even hours but sit in the quiet window, and the watchdog rescue's worst case is just under a day (the >10h mark can land in the skipped 17-21 UTC checks), not half a day. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
Review feedback: NOW is captured before the A/B scans, so the gap was underestimated by however long those took. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
…stop Pins claude-code-action to 11ba604 (last working, Jul 1) and stops the job right after the Claude step to check whether Claude produces the impl file + PNGs (permission_denials). Disables the failure handler so the run cannot comment on / retry #1010. Dispatched against this branch only via workflow_dispatch ref; main is untouched. Reverted immediately after. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
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| # ======================================================================== | ||
| # VALIDATION TEST — inspect what Claude produced, then STOP before any | ||
| # side-effecting steps (PR / GCS / issue comment). Remove after test. | ||
| # ======================================================================== | ||
| - name: TEST — inspect Claude output and stop (validation run) | ||
| if: always() | ||
| env: |
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| - name: Handle generation failure | ||
| if: failure() && steps.issue.outputs.number != '' | ||
| if: false # VALIDATION: disabled during test so it can't comment/retry on #1010 |
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| - name: Run Claude Code to generate implementation | ||
| id: claude | ||
| continue-on-error: true | ||
| timeout-minutes: 60 | ||
| uses: anthropics/claude-code-action@1298632ce7736903d02a1435002705aa2a594a6c # v1 | ||
| uses: anthropics/claude-code-action@11ba60486e4aec9ddfeafcf4bb3f00b028ac2c16 # v1 (VALIDATION: July-1 pin, revert after) | ||
| with: |
…tion' daily-regen re-generates implementations for the oldest specs (dispatches bulk-generate), not specs themselves; clearer wording per review. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
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Pull request overview
Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.
Comments suppressed due to low confidence (3)
.github/workflows/impl-generate.yml:425
- The workflow is pinned to a temporary claude-code-action SHA with a "revert after" note. This kind of validation-only pin is easy to forget and can silently change behavior vs the previously vetted pin; if this PR’s scope is daily-regen/watchdog reliability, this should be reverted to the prior pin (or moved to a dedicated validation PR).
uses: anthropics/claude-code-action@11ba60486e4aec9ddfeafcf4bb3f00b028ac2c16 # v1 (VALIDATION: July-1 pin, revert after)
.github/workflows/impl-generate.yml:466
- This validation step is unconditional (
if: always()) and exits 1, which will force every impl-generate run to fail and stop the pipeline before PR/GCS/issue-comment side effects. If this PR is intended to ship, this needs to be removed or at least disabled/guarded so normal runs can complete.
- name: TEST — inspect Claude output and stop (validation run)
if: always()
.github/workflows/impl-generate.yml:1046
Handle generation failureis fully disabled (if: false), which removes the workflow’s normal failure reporting/auto-retry behavior. If the validation block above is being removed/disabled, this should be restored so failures still get tracked and capped retries behave as designed.
- name: Handle generation failure
if: false # VALIDATION: disabled during test so it can't comment/retry on #1010
| id: claude_retry | ||
| timeout-minutes: 60 | ||
| uses: anthropics/claude-code-action@1298632ce7736903d02a1435002705aa2a594a6c # v1 | ||
| uses: anthropics/claude-code-action@11ba60486e4aec9ddfeafcf4bb3f00b028ac2c16 # v1 (VALIDATION: July-1 pin, revert after) |
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Summary
daily-regen.yml's cron ticks in multi-day streaks since early June (full 10×/day cadence until Jun 3, then gaps of 4–13 days: Jun 3→8, Jun 8→20, Jul 1→14, Jul 14→20; only 5 scheduled runs in the last 13 days instead of ~130). Less-frequent crons in the same repo (watchdog-stuck-jobsevery 6 h,bot-serving-checkdaily) kept firing throughout, and every daily-regen run that did start was green — so the workflow itself is healthy and nothing alarmed. All scheduled runs here start with a ~2–3.5 h scheduler delay, and GitHub documents top-of-hour overload as a cause for delayed/droppedscheduleevents; daily-regen is the repo's most frequent cron (2 h spacing ≈ the observed delay) and the only one affected.0 0,2,…→17 0,2,…), the documented mitigation for the high-load window.watchdog-stuck-jobs.yml(which fires reliably) gains a cron-liveness section: if no daily-regen run of any trigger type has started for >10 h outside the 17–21 UTC Berlin-evening quiet window, it re-dispatchesdaily-regen.ymlwith default inputs via the existing DRY_RUN-awaredispatchhelper — capping any future starvation at roughly half a day instead of two weeks.watchdog-stuck-jobs.ymlrow to the workflow table indocs/workflows/overview.md.Test plan
yaml.safe_load) for both edited workflowsrun:script passesbash -n.github/workflows/changes): after merge, confirm ticks land at :17 and that the next watchdog runs log the liveness lineChecklist
CHANGELOG.mdupdated under[Unreleased](Keep-a-Changelog categories,bold-titled bullets, PR ref) — required for every non-pipeline PR
docs/reference/,docs/workflows/,docs/contributing.md) if behavior changed🤖 Generated with Claude Code
https://claude.ai/code/session_014vs46U1fqUJQcpf2jE3YdN
Generated by Claude Code