gRPC reflection v1

[olegbespalov]

What?

This is a back-port of the grafana/xk6-grpc#48

It brings support of reflection v1 to the k6/net/grpc.

Why?

Reflection v1alpha is deprecated

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have run linter locally (make ci-like-lint) and all checks pass.
• I have run tests locally (make tests) and all tests pass.
• I have commented on my code, particularly in hard-to-understand areas.

Related PR(s)/Issue(s)

Resolve #3222

Changelog

ux: Adds support of the v1 of the gRPC reflection protocol.

Adds support of the v1 of the gRPC reflection protocol.

[codecov-commenter]

Codecov Report

Patch coverage: 91.66% and no project coverage change.

Comparison is base (2640a6b) 73.17% compared to head (9103545) 73.18%.

❗ Current head 9103545 differs from pull request most recent head 5940a9b. Consider uploading reports for the commit 5940a9b to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3338   +/-   ##
=======================================
  Coverage   73.17%   73.18%           
=======================================
  Files         258      258           
  Lines       19912    19887   -25     
=======================================
- Hits        14571    14554   -17     
+ Misses       4416     4413    -3     
+ Partials      925      920    -5     

Flag	Coverage Δ
ubuntu	73.11% <91.66%> (-0.01%)	⬇️
windows	73.02% <91.66%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
lib/netext/grpcext/reflect.go	80.00% <91.66%> (+6.66%)	⬆️

... and 2 files with indirect coverage changes

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