Support Experimental metrics from semantic_conventions/http-metrics (1.23.1)

[pragmaticivan]

Is your feature request related to a problem? Please describe.

Currently, we have to implement these metrics via middleware. But I assume they should be coming from instrumentation packages. To foster better organization I would like to point engineers to use the supported instrumentation libraries by opentelmetry-js.

Describe the solution you'd like

Support:
Metric: http.server.active_requests
Metric: http.server.request.body.size
Metric: http.server.response.body.size

And:
Metric: http.client.request.body.size
Metric: http.client.response.body.size

^ if possible

Describe alternatives you've considered

I had to create a middleware to implement these metrics.

Additional context

The Java client has implemented these metrics already: https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/09940563658c20076b3cc3df3ed7c792a55c4049/instrumentation-api-semconv/src/main/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpServerExperimentalMetrics.java#L59

[pragmaticivan]

This ticket might be fully blocked by #4235

[pragmaticivan]

I tried implementing the active_requets metrics but the attributes are out of compliance with the latest spec.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[github-actions]

This issue was closed because it has been stale for 14 days with no activity.