opentelemetry: access logging traceid and span id

[lework]

Description

plugin: opentelemetry

How to record traceid and span id in access log？

[An-DJ]

@lework The plugin opentelemetry can only support tracing.

Ref: https://apisix.apache.org/docs/apisix/plugins/opentelemetry/

Could you describe your detailed use case?

[lework]

you can refer to https://github.com/open-telemetry/opentelemetry-cpp-contrib/blob/main/instrumentation/nginx/README.md

where there are nginx variables that can be logged in the access log

• opentelemetry_trace_id - Trace identifier of the current span.
• opentelemetry_span_id - The span identifier of the current span.

[An-DJ]

@lework Currently that plugin does not define the nginx variables you mentioned to be used in log directly.

[An-DJ]

It seems that these variables are useful to debug and get to know the tracing details, which can be visited and recorded in logs or headers.

@lework Would you like to help the community to explore this?

[shreemaan-abhishek]

fixed by #8871