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feat(node): Add cronJobIntegration to monitor cron jobs - #25477

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@wedamija

@wedamija wedamija commented Oct 17, 2026 •

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Part of a series adding automatic Crons monitoring for the most-used job schedulers in each SDK. Check-ins for a monitor that doesn't exist yet are dropped, so today each monitor has to be created by hand with its schedule copied from the code. Sending the job's schedule as the monitor config lets Sentry create the monitor and keep it in sync.

Adds cronJobIntegration, which sends check-ins for every named CronJob of the cron package with its cron expression and timeZone as the monitor config. It replaces Sentry.cron.instrumentCron. Adding the integration is the opt-in. Job names came in cron 4.3.0, so older versions aren't instrumented.

Sentry.init({
  dsn: '...',
  integrations: [Sentry.cronJobIntegration({ excludeJobs: ['cleanup', /^debug-/] })],
});

CronJob.from({ name: 'daily-report', cronTime: '0 30 9 * * 1-5', timeZone: 'Europe/Vienna', onTick: sendReport, start: true });

Jobs with utcOffset, and schedules Crons can't express, like every 10 seconds, aren't monitored. Jobs created by instrumentCron are skipped. @nestjs/schedule builds its jobs on CronJob, so NestJS apps should use nestIntegration({ monitorCronJobs: true }) (#25471) instead, or both send check-ins for the same job. The node integration tests move to cron 4.4.

Stacked on #25474.

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size-limit report 📦

Compared: 94ccdd8 (PR test merge using danf/node-schedule-monitor-jobs at d21b712)

Against: 9310b4d (danf/node-schedule-monitor-jobs) · base run #64276

⚠️ Baseline mismatch: 38 danf/node-schedule-monitor-jobs commit(s) in the PR build are missing from the baseline. Their size changes also affect this comparison. Compare commits. Re-run once danf/node-schedule-monitor-jobs's baseline build for d21b712 finishes.

Path Size % Change Change
@sentry/browser 30.39 kB - -
@sentry/browser - with treeshaking flags 28.53 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 28.42 kB - -
@sentry/browser (incl. Tracing) 52.71 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 52.72 kB - -
@sentry/browser (incl. Tracing, Profiling) 55.69 kB - -
@sentry/browser (incl. Tracing, Replay) 93.01 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 81.61 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 97.76 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 110.75 kB - -
@sentry/browser (incl. Feedback) 47.97 kB - -
@sentry/browser (incl. sendFeedback) 35.49 kB - -
@sentry/browser (incl. FeedbackAsync) 40.6 kB - -
@sentry/browser (incl. Metrics) 31.42 kB - -
@sentry/browser (incl. Logs) 31.72 kB - -
@sentry/browser (incl. Metrics & Logs) 32.44 kB - -
@sentry/react 32.27 kB - -
@sentry/react (incl. Tracing) 55.07 kB - -
@sentry/vue 38.66 kB - -
@sentry/vue (incl. Tracing) 55.73 kB - -
@sentry/svelte 30.42 kB - -
@sentry/remix (Remix 3 client bundle) 57.8 kB - -
CDN Bundle 32.18 kB - -
CDN Bundle (incl. Tracing) 53.23 kB - -
CDN Bundle (incl. Logs, Metrics) 34.45 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 55.18 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 75.86 kB - -
CDN Bundle (incl. Tracing, Replay) 91.44 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 93.38 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) 97.56 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 99.55 kB - -
CDN Bundle - uncompressed 94.62 kB - -
CDN Bundle (incl. Tracing) - uncompressed 157.6 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 101.09 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 163.33 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 232.65 kB - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 279.29 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 285.01 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 292.99 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 298.7 kB - -
@sentry/nextjs (client) 57.89 kB - -
@sentry/sveltekit (client) 53.22 kB - -
@sentry/core/server 44.24 kB - -
@sentry/core/browser 13.93 kB - -
@sentry/node 155.31 kB +0.17% +260 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection) 82.21 kB +0.16% +131 B 🔺
@sentry/node - without tracing 96.43 kB +0.2% +191 B 🔺
@sentry/node - without channel injection 135.65 kB +0.14% +183 B 🔺
@sentry/aws-serverless 104.64 kB +0.22% +222 B 🔺
@sentry/cloudflare (withSentry) - minified 197.92 kB - -
@sentry/cloudflare (withSentry) 491.93 kB - -
@sentry/nextjs/cloudflare (withSentry) - minified 218.35 kB - -

View base workflow run

wedamija and others added 3 commits October 19, 2026 17:48
Sends check-ins for every named CronJob of the cron package (4.3+)
through the orchestrion channel injection, with the cron expression and
time zone as monitor config when Sentry reads it the same way. Bumps the
cron dev dependency of the node integration tests to 4.x.

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Claude <noreply@anthropic.com>
@wedamija
wedamija force-pushed the danf/node-schedule-monitor-jobs branch from b9c729a to 231f7bc Compare October 20, 2026 00:51
@wedamija
wedamija force-pushed the danf/cron-monitor-jobs branch from 69c3bca to 487dc0c Compare October 20, 2026 00:51
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github-actions Bot commented Oct 21, 2026 •

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@wedamija
wedamija marked this pull request as ready for review October 22, 2026 00:27
@wedamija
wedamija requested review from a team as code owners October 22, 2026 00:27
@wedamija
wedamija requested review from JPeer264, isaacs, nicohrubec and s1gr1d and removed request for a team October 22, 2026 00:27
@linear-code

linear-code Bot commented Oct 25, 2026

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JS-187

# Conflicts:
#	packages/server-utils/test/orchestrion/moduleInjectedTransform.test.ts
# Conflicts:
#	packages/server-utils/src/utils/cronMonitoring.ts
cronJobIntegration kept sending the config from the CronJob constructor
after job.setTime, so Sentry reverted the monitor and reported false
misses. Update the job's config after setTime.

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Comment thread packages/server-utils/src/integrations/cron.ts
@wedamija
wedamija requested a review from a team as a code owner October 29, 2026 20:57
@wedamija
wedamija requested review from logaretm and msonnb and removed request for a team October 29, 2026 20:57

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