Can I disable Auto-Propagation for specific outgoing HTTP requests?

[tobiasmuehl]

Hi, my NodeJS app makes calls using HTTP to other microservices of my own but also to third party APIs. I don't want to add the Traceparent header to the requests that are leaving my infrastructure. Is there a way to use auto-instrumentation for all requests except a specific one? Alternatively, can I have an allow/deny-list per domain?

Edit: I see it is possible using ignoreOutgoingUrls, but it is deprecated. Why? 😭

Edit2: Apparently it was replaced with a general hook. But where are the docs for that?

Edit3: Looks like the hook I need is ignoreOutgoingRequestHook and even though I can not find docs directly there is someone with sample code and we also have type definitions

[tobiasmuehl]

Figured it out!!! Example solution for only adding context for requests going to my-own-infrastructure.com

const sdk = new NodeSDK({
  instrumentations: [getNodeAutoInstrumentations({
    '@opentelemetry/instrumentation-http': {
      ignoreOutgoingRequestHook: (requestOptions) => {
        return requestOptions.hostname ? !requestOptions.hostname.includes('my-own-infrastructure.com') : true;
      },
    },
  })],
});