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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, check in without a config. 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: 5c4c575 (PR test merge using danf/node-schedule-monitor-jobs at 59979d9)

Against: 81b5056 (danf/node-schedule-monitor-jobs) · base run #62978

⚠️ Baseline mismatch: 15 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 59979d9 finishes.

Path Size % Change Change
@sentry/browser 29.91 kB - -
@sentry/browser - with treeshaking flags 28.05 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 27.95 kB - -
@sentry/browser (incl. Tracing) 52.1 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 52.1 kB - -
@sentry/browser (incl. Tracing, Profiling) 55.05 kB - -
@sentry/browser (incl. Tracing, Replay) 91.85 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 80.72 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 96.58 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 109.52 kB - -
@sentry/browser (incl. Feedback) 47.42 kB - -
@sentry/browser (incl. sendFeedback) 34.97 kB - -
@sentry/browser (incl. FeedbackAsync) 40.07 kB - -
@sentry/browser (incl. Metrics) 30.93 kB - -
@sentry/browser (incl. Logs) 31.21 kB - -
@sentry/browser (incl. Metrics & Logs) 31.84 kB - -
@sentry/react 31.74 kB - -
@sentry/react (incl. Tracing) 54.42 kB - -
@sentry/vue 38.07 kB - -
@sentry/vue (incl. Tracing) 55.03 kB - -
@sentry/svelte 29.93 kB - -
@sentry/remix (Remix 3 client bundle) 57.11 kB - -
CDN Bundle 31.67 kB - -
CDN Bundle (incl. Tracing) 52.61 kB - -
CDN Bundle (incl. Logs, Metrics) 33.87 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 54.55 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 74.79 kB - -
CDN Bundle (incl. Tracing, Replay) 90.28 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 92.21 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) 96.42 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 98.37 kB - -
CDN Bundle - uncompressed 93.29 kB - -
CDN Bundle (incl. Tracing) - uncompressed 156.14 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 99.84 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 162.11 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 229.88 kB - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 276.31 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 282.26 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 290.01 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 295.96 kB - -
@sentry/nextjs (client) 57.31 kB - -
@sentry/sveltekit (client) 52.48 kB - -
@sentry/core/server 41.8 kB - -
@sentry/core/browser 13.81 kB - -
@sentry/node 152.87 kB +0.16% +241 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection) 81.76 kB +0.22% +178 B 🔺
@sentry/node - without tracing 94.42 kB +0.18% +161 B 🔺
@sentry/node - without channel injection 133.49 kB +0.15% +188 B 🔺
@sentry/aws-serverless 102.61 kB +0.18% +177 B 🔺
@sentry/cloudflare (withSentry) - minified 211.11 kB - -
@sentry/cloudflare (withSentry) 523.83 kB - -
@sentry/nextjs/cloudflare (withSentry) - minified 230.74 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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