Add instrumentation support for segmentio/kafka-go

[sohaibomr]

Is your feature request related to a problem? Please describe.
There doesn't seem to be a client for instrumenting Kafka, especially for tracing Kafka messages across multiple microservices. It will be helpful to have this support to achieve distributed async tracing in event-driven architecture where kaka is used as a messaging queue.

Describe the solution you'd like
Support for instrumentation in segmentio/kafka-go kafka client.

[axw]

Thanks for opening the issue @sohaibomr

As an alternative to native instrumentation in the Go Agent, another option would be to use OpenTelemetry instrumentation for kafka-go with the recently added apmotel module. There's an open issue about adding OTel instrumentation for kafka-go (segmentio/kafka-go#1025).

[sohaibomr]

Let me look into the alternative approach you suggested.
Thanks @axw

[sohaibomr]

@axw I attempted to add this support in apm-agent-go which seems to work for me. I can create a PR if you are accepting contributions.
You may have a look at it here.
thanks

[axw]

@sohaibomr nice work! Thanks for the offer, will discuss with the team. If nothing else, we might point to your repo from some docs.