[discourse] OFREP HTTP Trace Context Propagation

[markphelps]

Originally posted by slashmo on Discourse

Hey folks and happy holidays to those who are celebrating

Do the OFREP HTTP endpoints support trace context propagation via HTTP headers? When I include a traceparent header in one of the HTTP requests it seems that Flipt isn’t picking it up and instead creates a root span (and its usual child spans). I made sure to enable the relevant propagators via Flipt environment variables and my general observability setup using OTel is also working fine.

Cheers,

Moritz

[markphelps]

Reply from mark on Discourse:

slashmo:

traceparent

Hey @slashmo ! Happy Holidays to you as well.

Can you post what your tracing.propagators env var looks like to help debug?

[markphelps]

Reply from slashmo on Discourse:

Sure! It‘s FLIPT_TRACING_PROPAGATORS=tracecontext, but I also tried without the env var which I expect would give me the default tracecontext & baggage propagators.

[markphelps]

Reply from mark on Discourse:

Hey @slashmo !

After much searching and debugging I think I found the issue and created a PR to fix: fix: otel http parent propogation by markphelps · Pull Request #3758 · flipt-io/flipt · GitHub

Once this is merged we’ll get a new release out, likely Monday of next week.

Thank you for raising this and for your patience!!

[markphelps]

Reply from slashmo on Discourse:

Awesome! Thanks for the prompt replies and fix

[markphelps]

Reply from slashmo on Discourse:

I just tried this out from the main branch and can confirm that it works with my setup too

[markphelps]

Reply from mark on Discourse:

Awesome! we will likely create a new release tomorrow. In the mean time you could run our nightly build if you want to run via Docker

  <a href="https://github.com/flipt-io/flipt?tab=readme-ov-file#nightly-build" target="_blank" rel="noopener">github.com</a>

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[markphelps]

Reply from mark on Discourse:

@slashmo we just released v1.54.0 with the fix