using fetch as http client doesn't add trace_id & span_id as Headers

[vigohe]

Expected behaviour
When fetch it's execute should add trace_id & span_id automatically as Headers

Actual behaviour
When checking a trace between two services no dependency exists because the trace_id & span_id are missing

Steps to reproduce
fetch("http://example.com");

Environment docker

• Operation system: docker image node:18-alpine
• Node.js version: node 18
• Tracer version: 2.10.0
• Agent version: 7.37.1

[rochdev]

Changing this to a feature request since the reason this doesn't work is that fetch is not supported yet so we don't have an integration for it.

[pinko-fowle]

There is some work in progress from back in April in #2010.

Node 18.13.0 just shipped fetch without the experimental warning. The PR for that is nodejs/node#45287.

[bengl]

Node.js' built-in fetch is now supported, so this should be working now. I'll close this, but please feel free to comment here again if it's still not working with the latest tracer version.