[mdatagen] add LeveledMeter method

[codeboten]

This will use the LeveledMeterProvider in TelemetrySettings.

Split from #10912, follows #10931

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 14 lines in your changes missing coverage. Please review.

Project coverage is 91.60%. Comparing base (26fb7cb) to head (d7a6c7d).
Report is 5 commits behind head on main.

Files	Patch %	Lines
...ereceiver/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️
...terhelper/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️
...processor/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️
...sorhelper/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️
...verhelper/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️
...perhelper/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️
service/internal/metadata/generated_telemetry.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10933      +/-   ##
==========================================
- Coverage   91.66%   91.60%   -0.07%     
==========================================
  Files         404      404              
  Lines       18941    18955      +14     
==========================================
  Hits        17363    17363              
- Misses       1219     1233      +14     
  Partials      359      359              

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[dmitryax]

This change makes the LeveledMeterProvider field in TelemetrySettings required. If not provided, users get panic:

ic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x102e1320c]

goroutine 16 [running]:
testing.tRunner.func1.2({0x107ccdf80, 0x10cb4a620})
	/opt/homebrew/Cellar/go@1.22/1.22.7/libexec/src/testing/testing.go:1631 +0x1c4
testing.tRunner.func1()
	/opt/homebrew/Cellar/go@1.22/1.22.7/libexec/src/testing/testing.go:1634 +0x33c
panic({0x107ccdf80?, 0x10cb4a620?})
	/opt/homebrew/Cellar/go@1.22/1.22.7/libexec/src/runtime/panic.go:770 +0x124
go.opentelemetry.io/collector/receiver/receiverhelper/internal/metadata.LeveledMeter({0x14002da8080, {0x108d46498, 0x14002d9d2c0}, {0x108d464c0, 0x14002d9d2d0}, 0x0, 0x2, {0x0, 0x0}}, 0x186?)
	/Users/danoshin/Projects/opentelemetry-collector/receiver/receiverhelper/internal/metadata/generated_telemetry.go:21 +0x3c
go.opentelemetry.io/collector/receiver/receiverhelper/internal/metadata.NewTelemetryBuilder({0x14002da8080, {0x108d46498, 0x14002d9d2c0}, {0x108d464c0, 0x14002d9d2d0}, 0x0, 0x2, {0x0, 0x0}}, {0x0, ...})
	/Users/danoshin/Projects/opentelemetry-collector/receiver/receiverhelper/internal/metadata/generated_telemetry.go:51 +0x128
go.opentelemetry.io/collector/receiver/receiverhelper.newReceiver({{{{0x14002bb19b0, 0x9}}, {0x14002bb19ba, 0xd}}, {0x1055abc97, 0x4}, 0x0, {{{{...}}, {0x14002bb19ba, 0xd}}, ...}})
	/Users/danoshin/Projects/opentelemetry-collector/receiver/receiverhelper/obsreport.go:52 +0x54
go.opentelemetry.io/collector/receiver/receiverhelper.NewObsReport(...)
	/Users/danoshin/Projects/opentelemetry-collector/receiver/receiverhelper/obsreport.go:48

Is the new field expected to be required? If so, should it be marked as a breaking change?

[dmitryax]

@codeboten let me know if we need an issue from this? I can create one

[codeboten]

This is expected as the LeveledMeterProvider should be present. Adding a note to the changelog makes sense