feat(node): Send the graphile-worker crontab schedule as monitor config

dev-packages/node-integration-tests/suites/cron/graphile-worker/test.ts

@@ -27,6 +27,7 @@ describeWithDockerCompose('graphile-worker crontab monitoring', { workingDirecto
                   monitor_slug: 'hourly-report',
                   status: 'in_progress',
                   release: '1.0',
+                  monitor_config: { schedule: { type: 'crontab', value: '0 * * * *' }, timezone: 'UTC' },
                 },
               })
               .expect({
@@ -44,6 +45,7 @@ describeWithDockerCompose('graphile-worker crontab monitoring', { workingDirecto
                   monitor_slug: 'failing_task',
                   status: 'in_progress',
                   release: '1.0',
+                  monitor_config: { schedule: { type: 'crontab', value: '30 * * * *' }, timezone: 'UTC' },
                 },
               })
               .expect({

packages/server-utils/src/integrations/graphile-worker.ts

@@ -1,5 +1,5 @@
 import * as diagnosticsChannel from '../utils/diagnosticsChannel';
-import type { IntegrationFn } from '@sentry/core';
+import type { IntegrationFn, MonitorConfig } from '@sentry/core';
 import {
   captureCheckIn,
   captureException,
@@ -35,7 +35,9 @@ interface CronItem {
   identifier: string;
   task: string;
   payload?: Record<string, unknown> | null;
-  match: (digest: Record<'min' | 'hour' | 'date' | 'month' | 'dow', number>) => boolean;
+  match: ((digest: Record<'min' | 'hour' | 'date' | 'month' | 'dow', number>) => boolean) & {
+    parsedCronMatch?: Record<string, number[] | undefined>;
+  };
 }
 
 interface Job {
@@ -61,8 +63,8 @@ const _graphileWorkerIntegration = ((options: GraphileWorkerOptions = {}) => {
 }) satisfies IntegrationFn;
 
 /**
- * Sends Crons check-ins for the jobs the `graphile-worker` crontab schedules.
- * Requires the Sentry runtime hook or bundler plugin.
+ * Sends Crons check-ins for the jobs the `graphile-worker` crontab schedules, with the crontab
+ * schedule as monitor config. Requires the Sentry runtime hook or bundler plugin.
  */
 export const graphileWorkerIntegration = defineIntegration(_graphileWorkerIntegration);
 
@@ -100,7 +102,7 @@ export function monitorGraphileCronJobs(events: Events, items: CronItem[], optio
         return;
       }
       const slug = item.identifier;
-      const checkInId = captureCheckIn({ monitorSlug: slug, status: 'in_progress' });
+      const checkInId = captureCheckIn({ monitorSlug: slug, status: 'in_progress' }, toMonitorConfig(item));
       runs.set(job, { slug, checkInId, start: timestampInSeconds() });
     } catch (e) {
       DEBUG_BUILD && debug.error('[GraphileWorker] Failed to send the check-in:', e);
@@ -154,3 +156,51 @@ function findCronItem(items: CronItem[], job: Job): CronItem | undefined {
   }
   return candidates.length === 1 ? candidates[0] : undefined;
 }
+
+// graphile-worker runs the crontab in UTC. Rebuilding it from the parsed values keeps the day fields
+// unambiguous: a day field is `*` only when it matches every day, as graphile-worker reads it.
+function toMonitorConfig(item: CronItem): MonitorConfig | undefined {
+  const match = item.match.parsedCronMatch;
+  if (!match) {
+    return undefined;
+  }
+  const fields = [
+    toCrontabField(match.minutes, 60, 0, true),
+    toCrontabField(match.hours, 24, 0, true),
+    toCrontabField(match.dates, 31, 1),
+    toCrontabField(match.months, 12, 1, true),
+    toCrontabField(match.dows, 7, 0),
+  ];
+  if (fields.some(field => !field)) {
+    return undefined;
+  }
+  return { schedule: { type: 'crontab', value: fields.join(' ') }, timezone: 'UTC' };
+}
+
+// A step (`*/n`) in a day field would change how cron combines the day fields, so only other fields use one.
+function toCrontabField(
+  values: number[] | undefined,
+  size: number,
+  min: number,
+  allowStep = false,
+): string | undefined {
+  if (!Array.isArray(values) || !values.length) {
+    return undefined;
+  }
+  if (values.length >= size) {
+    return '*';
+  }
+  const step = (values[1] ?? 0) - (values[0] ?? 0);
+  if (allowStep && values.length * step >= size && values.every((value, i) => value === min + i * step)) {
+    return `*/${step}`;
+  }
+  const parts: string[] = [];
+  for (let i = 0; i < values.length; i++) {
+    const start = values[i];
+    while (values[i + 1] === (values[i] as number) + 1) {
+      i++;
+    }
+    parts.push(start === values[i] ? String(start) : `${start}-${values[i]}`);
+  }
+  return parts.join(',');
+}

packages/server-utils/test/integrations/graphile-worker.test.ts

@@ -60,14 +60,17 @@ describe('graphile-worker crontab monitoring', () => {
     events.emit('job:complete', { job, error });
   }
 
-  it('sends check-ins using the item identifier as slug', () => {
+  it('sends check-ins with the crontab in UTC, using the item identifier as slug', () => {
     const events = new EventEmitter();
     monitorGraphileCronJobs(events, [cronItem('hourly-report', 'report', { minutes: [0], dows: [1, 2, 3, 4, 5] })], {});
 
     runJob(events, cronJob('report', '2026-10-16T09:00:00.000Z'));
 
     expect(captureCheckIn.mock.calls).toEqual([
-      [{ monitorSlug: 'hourly-report', status: 'in_progress' }],
+      [
+        { monitorSlug: 'hourly-report', status: 'in_progress' },
+        { schedule: { type: 'crontab', value: '0 * * * 1-5' }, timezone: 'UTC' },
+      ],
       [{ monitorSlug: 'hourly-report', status: 'ok', checkInId: 'check-in-id', duration: expect.any(Number) }],
     ]);
   });
@@ -85,6 +88,37 @@ describe('graphile-worker crontab monitoring', () => {
     });
   });
 
+  it.each([
+    [{ minutes: [0, 15, 30, 45], hours: [0, 6, 12, 18] }, '*/15 */6 * * *'],
+    [
+      { minutes: [0], hours: [0], dates: ALL(1, 31).filter(d => d % 2 === 1), dows: [1] },
+      '0 0 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31 * 1',
+    ],
+    [{ minutes: [5], hours: [4], dates: [1, 15], months: [1, 4, 7, 10] }, '5 4 1,15 */3 *'],
+    [{ minutes: [0], hours: [0], months: [3, 6, 9, 12] }, '0 0 * 3,6,9,12 *'],
+    [{ minutes: [0], hours: [9, 10, 11, 12] }, '0 9-12 * * *'],
+  ])('rebuilds the crontab from %j', (ranges, crontab) => {
+    const events = new EventEmitter();
+    const item = cronItem('job', 'job', ranges);
+    monitorGraphileCronJobs(events, [{ ...item, match: Object.assign(() => true, item.match) }], {});
+
+    runJob(events, cronJob('job', '2026-10-16T09:00:00.000Z'));
+
+    expect(captureCheckIn.mock.calls[0]?.[1]).toEqual({
+      schedule: { type: 'crontab', value: crontab },
+      timezone: 'UTC',
+    });
+  });
+
+  it('checks in without a config for a custom matcher', () => {
+    const events = new EventEmitter();
+    monitorGraphileCronJobs(events, [{ identifier: 'custom', task: 'job', payload: {}, match: () => true }], {});
+
+    runJob(events, cronJob('job', '2026-10-16T09:00:00.000Z'));
+
+    expect(captureCheckIn.mock.calls[0]).toEqual([{ monitorSlug: 'custom', status: 'in_progress' }, undefined]);
+  });
+
   it('tells items of the same task apart by schedule and payload', () => {
     const events = new EventEmitter();
     monitorGraphileCronJobs(