OTLP Exporters API documentation page is missing the API section

[MoshiBin]

The API section in the OpenTelemetry OTLP Exporters documentation page is not being generated. According to otlp.rst, it should be generated:

.. automodule:: opentelemetry.exporter.otlp.proto.grpc
    :members:
    :undoc-members:
    :show-inheritance:

[RobsonSutton]

I think it is behaving as has been defined, it just looks like this hasn't been updated as this functionality was probably split into a few submodules? You can see the contents of what is currently displayed via the UI here (https://github.com/open-telemetry/opentelemetry-python/blob/b9a6358583c0676482a043279c01b252dc6c308e/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/__init__.py), but there is no code content for it to build the API docs from, it looks as though this has been split into trace_exporter, metric_exporter and _log_exporter but without any documentation currently.

I have raised the above PR to show what I mean, but I am new to opentelemetry and only at a basic scripting level with python and associated tooling, as opposed to being a guru so going to have to figure out how to go about testing this to ensure it behaves as expected unless anyone has any recommendations / can point me in the right direction of course!

[srikanthccv]

If you run the tox command tox -e docs it should error if there is any issue with documentation. Otherwise, it will create a _build/html folder which contains the API documentation file. You should be able to browse the generated documentation by opening index.html and see if did what you expected it to do.

[RobsonSutton]

@srikanthccv - Thank you for the comment! I'll take a look at this later today and hopefully tidy everything up a bit more and have it appropriately tested 👍