Init commit

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

@@ -0,0 +1,21 @@
+import { Meter } from '@opentelemetry/api'
+import { VideoModel } from '@server/models/video/video.js'
+
+export class LivesObserversBuilder {
+
+  constructor (private readonly meter: Meter) {
+
+  }
+
+  buildObservers () {
+    this.meter.createObservableGauge('peertube_running_lives_total', {
+      description: 'Total running lives on the instance'
+    }).addCallback(async observableResult => {
+      const local = await VideoModel.countLives({ remote: false, mode: 'published' })
+      const remote = await VideoModel.countLives({ remote: true, mode: 'published' })
+
+      observableResult.observe(local, { liveOrigin: 'local' })
+      observableResult.observe(remote, { liveOrigin: 'remote' })
+    })
+  }
+}