Logging LLM provider request ids as gen_ai attributes

[nirga]

Discussed in #2174

^{Originally posted by dinmukhamedm October 18, 2024}
It would be very useful for debugging purposes (e.g. with OpenAI support) to have a unique identifier to an LLM call span. Has OpenLLMetry considered adding something like gen_ai.request.id attribute?

The biggest challenge I see with this is that they are not unified, and formatted differently across providers and even across endpoints of a single provider (e.g. completions vs assistant). Generally, there is a request-wide unique ID though, and if there is none, the attribute can obviously remain optional.

[dinmukhamedm]

@nirga for this, we'll need to first uncomment https://github.com/traceloop/openllmetry/blob/main/packages/opentelemetry-semantic-conventions-ai/opentelemetry/semconv_ai/__init__.py#L53 and release a new version of opentelemetry.semconv_ai. Could you please do that? I am happy to try and add this to some of the providers/endpoints afterwards.