Split model by signal type and move it to the new pdata module

[dmitryax]

Split all pdata related code by type and move it from model to the new module pdata.

• model/pdata and model/otlp are moved to pdata/plog, pdata/pmetric and pdata/ptrace.
• model/otlpgrpc is moved to pdata/plogotlp, pdata/pmetricotlp and pdata/ptraceotlp.

Now all the APIs in model except for model/semconv are deprecated.

This is another PR following the latest decisions made in #5087 and #5027.

Resolves #4832 and #5027

[codecov]

Codecov Report

Merging #5168 (9effe2d) into main (2a55e9f) will decrease coverage by 35.45%.
The diff coverage is 80.36%.

❗ Current head 9effe2d differs from pull request most recent head 1874760. Consider uploading reports for the commit 1874760 to get more accurate results

@@             Coverage Diff             @@
##             main    #5168       +/-   ##
===========================================
- Coverage   90.32%   54.87%   -35.46%     
===========================================
  Files         185      197       +12     
  Lines       11042    23379    +12337     
===========================================
+ Hits         9974    12829     +2855     
- Misses        841     9615     +8774     
- Partials      227      935      +708     

Impacted Files	Coverage Δ
component/receiver.go	100.00% <ø> (ø)
pdata/internal/common.go	94.94% <ø> (ø)
pdata/internal/data/bytesid.go	81.25% <ø> (ø)
...data/protogen/collector/logs/v1/logs_service.pb.go	30.68% <ø> (ø)
...rotogen/collector/metrics/v1/metrics_service.pb.go	30.68% <ø> (ø)
...ata/protogen/collector/trace/v1/trace_config.pb.go	0.87% <ø> (ø)
...ta/protogen/collector/trace/v1/trace_service.pb.go	30.68% <ø> (ø)
...data/internal/data/protogen/common/v1/common.pb.go	18.89% <ø> (ø)
pdata/internal/data/protogen/logs/v1/logs.pb.go	32.71% <ø> (ø)
...ta/internal/data/protogen/metrics/v1/metrics.pb.go	17.10% <ø> (ø)
... and 79 more

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[jpkrohling]

I'm requesting the review from the same reviewers of the original PR.

[tigrannajaryan]

2 questions:

• pdata is now one Go module. I thought we planned to split into 4 modules, one common and 3 for signals types. Was this decision changed or it is coming in a future PR?
• What is the plan for model/semconv? Is model going to remain a Go module with just semconv package?

[dmitryax]

@tigrannajaryan

pdata is now one Go module. I thought we planned to split into 4 modules, one common and 3 for signals types. Was this decision changed or it is coming in a future PR?

The plan is the same. New modules for each signal + pdata/pcommon will be added later. They depend on pdata/internal, so we need to make pdata or pdata/internal a module anyway. I think we can keep additional pdata module for that.

What is the plan for model/semconv? Is model going to remain a Go module with just semconv package?

I think we agreed on moving it from /model/semconv to another separate /semconv module. This will be done separately.

[dmitryax]

Look like something wrong with coverage calculation. I verified that the coverage is the same between the moved parts

[bogdandrutu]

@dmitryax look into updating this file https://github.com/open-telemetry/opentelemetry-collector/blob/main/.codecov.yml

[dmitryax]

@dmitryax look into updating this file https://github.com/open-telemetry/opentelemetry-collector/blob/main/.codecov.yml

Oh that's why! Thanks for pointing on this

[dmitryax]

🎉