feat: add traces to ofrep endpoint

[aepfli]

This PR

our OFREP endpoint was not offering any kind of otel information, now we have traces

Related Issues

Relates: open-telemetry/opentelemetry-demo#2119

Notes

Follow-up Tasks

How to test

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[julianocosta89]

This is great!
Thank you @aepfli

[pichlermarc]

I have some limited knowledge about both OpenFeature and feature flagging semconv, please ignore my comments wherever it does not make any sense :)

Overall, I'm wondering this PR should actually add logs for the internal operations instead, only keeping the server span for handling the HTTP request.

[aepfli]

I have some limited knowledge about both OpenFeature and feature flagging semconv, please ignore my comments wherever it does not make any sense :)

Overall, I'm wondering this PR should actually add logs for the internal operations instead, only keeping the server span for handling the HTTP request.

thank you for the great insights, i will limit this pr now, to only offer spans, but not adding any kind of additional information. Thank you

[toddbaert]

I have some limited knowledge about both OpenFeature and feature flagging semconv, please ignore my comments wherever it does not make any sense :)
Overall, I'm wondering this PR should actually add logs for the internal operations instead, only keeping the server span for handling the HTTP request.

thank you for the great insights, i will limit this pr now, to only offer spans, but not adding any kind of additional information. Thank you

I'm fine with limiting this pr, but I think I agree with @pichlermarc that we should limit span use and add more events (logs) before we release these changes. I think changing the nature of our telemetry to much can cause thrashing for monitoring setups.

What do you think @aepfli cc @beeme1mr

[toddbaert]

Thanks for working on this @aepfli .

What do you think about this? #1593 (comment)

[aepfli]

Thanks for working on this @aepfli .

What do you think about this? #1593 (comment)

with this pr, we are now generating traces, beforehand there was nothing - so i think it is a good starting point, especially for the ofrep endpoint, which is often related with a span from another system anyways

[beeme1mr]

I think this is the right approach. We can easily add spans and custom attributes later once the use case becomes clear. Thanks!