[JS] Telemetry does not work with Sentry or Elastic APM

[descampsk]

Describe the bug If I want to use Sentry or Elastic APM with the firebase genkit Telemetry in local or in production, no trace are sent.

To Reproduce

NODE_OPTIONS="-r elastic-apm-node/start.js" genkit start -- nest start --watch

Expected behavior It should work

Screenshots

Runtime (please complete the following information):

• devcontainer : mcr.microsoft.com/devcontainers/typescript-node:1-22-bookworm

** Node version Node v22.9.0

Additional context Add any other context about the problem here.

[eddyleelin]

I think I fixed my project's backend telemetry with Sentry + Genkit:

Context

Per Sentry docs (https://github.com/getsentry/sentry-javascript/blob/develop/docs/v8-node.md#using-a-custom-opentelemetry-setup), Sentry.init() creates its own OpenTelemetry provider.

So, to use a custom OpenTelemetry setup (like genkit), you need to opt out with skipOpenTelemetrySetup so that Sentry's initialization doesn't interfere on Genkit's setup!

Minimal example

This is a simplified version of what I tried (if it doesn't work out of the box, let me know):

import {
  SentrySpanProcessor,
  SentryPropagator,
  setOpenTelemetryContextAsyncContextStrategy,
  setupEventContextTrace,
} from '@sentry/opentelemetry';
import { context, propagation, trace } from '@opentelemetry/api';

Sentry.init({
  dsn: '…',
  environment: 'development',
  skipOpenTelemetrySetup: true,
});

enableFirebaseTelemetry({
  //  forceDevExport: true // Enable to test in Firebase emulator
}).then(async () => {
  const provider: any = trace.getTracerProvider();
  provider.addSpanProcessor(new SentrySpanProcessor());
  propagation.setGlobalPropagator(new SentryPropagator());
  setOpenTelemetryContextAsyncContextStrategy();
  setupEventContextTrace(Sentry.getClient());
});

I'm guessing Elastic APM would need the same pattern: let Genkit own the provider and have the third-party SDK add its processor?

[Fox32]

For use calling disableOTelRootSpanDetection() is sufficient to use it with sentry.