feat: health sidecar

[danielstokes]

Description

Adds health APM support.

TODO:

• Add tests
• Fix Restart policy ¹

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• New feature / enhancement (non-breaking change which adds functionality)
• Security fix
• Bug fix (non-breaking change which fixes an issue)

Checklist:

• Documentation has been updated
• This change requires changes in testing:
  • unit tests
  • E2E tests

Footnotes

1. requires https://github.com/newrelic/k8s-agents-operator/pull/110 before this can work. ↩

[codecov]

Codecov Report

Attention: Patch coverage is 65.70645% with 250 lines in your changes missing coverage. Please review.

Project coverage is 61.94%. Comparing base (94f652a) to head (5ad3006).

Files with missing lines	Patch %	Lines
src/instrumentation/health.go	69.48%	107 Missing and 23 partials ⚠️
src/api/v1alpha2/zz_generated.deepcopy.go	0.00%	32 Missing ⚠️
src/instrumentation/health_check.go	53.12%	10 Missing and 5 partials ⚠️
src/instrumentation/instrumentation_validator.go	0.00%	15 Missing ⚠️
src/apm/health.go	89.38%	8 Missing and 4 partials ⚠️
src/apm/helper.go	78.94%	9 Missing and 3 partials ⚠️
.../instrumentation/instrumentation_status_updater.go	0.00%	8 Missing ⚠️
src/api/v1alpha2/instrumentation_types.go	0.00%	5 Missing ⚠️
src/apm/dotnet.go	50.00%	2 Missing and 1 partial ⚠️
src/apm/golang.go	50.00%	2 Missing and 1 partial ⚠️
... and 5 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #112      +/-   ##
==========================================
+ Coverage   60.31%   61.94%   +1.63%     
==========================================
  Files          22       26       +4     
  Lines        1532     2252     +720     
==========================================
+ Hits          924     1395     +471     
- Misses        538      745     +207     
- Partials       70      112      +42     

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[danielstokes]

updating in next commit

[mvicknr]

Added a few notes of things we found along the way while integrating with the sidecar