Init commit

server/core/lib/opentelemetry/metric-helpers/job-queue-observers-builder.ts

@@ -0,0 +1,24 @@
+import { Meter } from '@opentelemetry/api'
+import { JobQueue } from '@server/lib/job-queue/index.js'
+
+export class JobQueueObserversBuilder {
+
+  constructor (private readonly meter: Meter) {
+
+  }
+
+  buildObservers () {
+    this.meter.createObservableGauge('peertube_job_queue_total', {
+      description: 'Total jobs in the PeerTube job queue'
+    }).addCallback(async observableResult => {
+      const stats = await JobQueue.Instance.getStats()
+
+      for (const { jobType, counts } of stats) {
+        for (const state of Object.keys(counts)) {
+          observableResult.observe(counts[state], { jobType, state })
+        }
+      }
+    })
+  }
+
+}