[EXPORTER] Error when grpc endpoint is empty

[HennerM]

Changes

It seems like there is nothing checking whether the grpc exporter is actually empty, in which case it doesn't make sense to create a gRPC channel. This causes a problem in my application where we accidentally create a GrpcExporter with empty endpoint, which we never use because of a NOOP sampler.

I believe it could be useful to log an error here, similar to when the endpoint is no valid URI.

[linux-foundation-easycla[bot]]

The committers listed above are authorized under a signed CLA.

• :white_check_mark: login: HennerM / name: Markus Hennerbichler (d1cec0b8cf4845e20588314f60d4baf5ca1646fe)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.09%. Comparing base (497eaf4) to head (de2f639). Report is 10 commits behind head on main.

:exclamation: Current head de2f639 differs from pull request most recent head d1cec0b. Consider uploading reports for the commit d1cec0b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2507      +/-   ##
==========================================
- Coverage   87.12%   87.09%   -0.02%     
==========================================
  Files         200      200              
  Lines        6109     6103       -6     
==========================================
- Hits         5322     5315       -7     
- Misses        787      788       +1     

see 3 files with indirect coverage changes

[marcalff]

@HennerM

Thanks for the PR. Please sign the CLA so it can be merged.

After signing, if the CI does not detect the change, please add a comment with a single line "/easycla" command, to poke github to reevaluate.

[HennerM]

Thanks @marcalff , I am just getting the CLA for my organisation through, could take a day or so

[marcalff]

/easycla

[marcalff]

Hi @HennerM .

Any update on the CLA ?

[HennerM]

Hi @HennerM .

Any update on the CLA ?

yes unfortunately the EasyCLA landed in the spam folder of the responsible person in my organisation, but it should get through soon now

[HennerM]

/easycla