add metrics for report_json and chunks file sizes

[matt-codecov]

like #583 and #574

arpad's metrics are already flowing. when this and #583 are deployed, i'll create a dashboard or a few showing p50/p75/p95 for:

• raw upload size + the number of coverage files contained in a single upload
• size of each individual coverage file inside an upload
• the above, grouped by format (cobertura, lcov, jacoco...)
• report_json size and chunks file size

[codecov-notifications]

Codecov Report

Attention: Patch coverage is 90.00000% with 2 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files	Patch %	Lines
tasks/upload_finisher.py	87.50%	2 Missing ⚠️

@@            Coverage Diff             @@
##             main     #587      +/-   ##
==========================================
- Coverage   97.53%   97.52%   -0.01%     
==========================================
  Files         421      421              
  Lines       35244    35258      +14     
==========================================
+ Hits        34374    34386      +12     
- Misses        870      872       +2     

Flag	Coverage Δ
integration	97.52% <90.00%> (-0.01%)	⬇️
latest-uploader-overall	97.52% <90.00%> (-0.01%)	⬇️
unit	97.52% <90.00%> (-0.01%)	⬇️

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

Components	Coverage Δ
NonTestCode	94.63% <90.00%> (-0.01%)	⬇️
OutsideTasks	97.75% <100.00%> (ø)

Files	Coverage Δ
helpers/metrics.py	100.00% <100.00%> (ø)
services/report/prometheus_metrics.py	100.00% <100.00%> (ø)
services/report/report_processor.py	94.52% <100.00%> (-0.08%)	⬇️
tasks/upload_finisher.py	73.61% <87.50%> (+0.83%)	⬆️

[codecov-qa]

Codecov Report

Attention: Patch coverage is 90.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.52%. Comparing base (8d8882d) to head (a7885ec).

✅ All tests successful. No failed tests found.

@@            Coverage Diff             @@
##             main     #587      +/-   ##
==========================================
- Coverage   97.53%   97.52%   -0.01%     
==========================================
  Files         421      421              
  Lines       35244    35258      +14     
==========================================
+ Hits        34374    34386      +12     
- Misses        870      872       +2     

Flag	Coverage Δ
integration	97.52% <90.00%> (-0.01%)	⬇️
latest-uploader-overall	97.52% <90.00%> (-0.01%)	⬇️
unit	97.52% <90.00%> (-0.01%)	⬇️

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

Components	Coverage Δ
NonTestCode	94.63% <90.00%> (-0.01%)	⬇️
OutsideTasks	97.75% <100.00%> (ø)

Files	Coverage Δ
helpers/metrics.py	100.00% <100.00%> (ø)
services/report/prometheus_metrics.py	100.00% <100.00%> (ø)
services/report/report_processor.py	94.52% <100.00%> (-0.08%)	⬇️
tasks/upload_finisher.py	73.61% <87.50%> (+0.83%)	⬆️

[codecov-public-qa]

Codecov Report

Attention: Patch coverage is 90.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.52%. Comparing base (8d8882d) to head (a7885ec).

✅ All tests successful. No failed tests found.

@@            Coverage Diff             @@
##             main     #587      +/-   ##
==========================================
- Coverage   97.53%   97.52%   -0.01%     
==========================================
  Files         421      421              
  Lines       35244    35258      +14     
==========================================
+ Hits        34374    34386      +12     
- Misses        870      872       +2     

Flag	Coverage Δ
integration	97.52% <90.00%> (-0.01%)	⬇️
latest-uploader-overall	97.52% <90.00%> (-0.01%)	⬇️
unit	97.52% <90.00%> (-0.01%)	⬇️

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

Components	Coverage Δ
NonTestCode	94.63% <90.00%> (-0.01%)	⬇️
OutsideTasks	97.75% <100.00%> (ø)

Files	Coverage Δ
helpers/metrics.py	100.00% <100.00%> (ø)
services/report/prometheus_metrics.py	100.00% <100.00%> (ø)
services/report/report_processor.py	94.52% <100.00%> (-0.08%)	⬇️
tasks/upload_finisher.py	73.61% <87.50%> (+0.83%)	⬆️

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.57%. Comparing base (8d8882d) to head (a7885ec).

✅ All tests successful. No failed tests found.

Files	Patch %	Lines
tasks/upload_finisher.py	87.50%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #587      +/-   ##
==========================================
- Coverage   97.57%   97.57%   -0.01%     
==========================================
  Files         456      456              
  Lines       36450    36464      +14     
==========================================
+ Hits        35566    35578      +12     
- Misses        884      886       +2     

Flag	Coverage Δ
integration	97.52% <90.00%> (-0.01%)	⬇️
latest-uploader-overall	97.52% <90.00%> (-0.01%)	⬇️
unit	97.52% <90.00%> (-0.01%)	⬇️

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

Components	Coverage Δ
NonTestCode	94.71% <90.00%> (-0.01%)	⬇️
OutsideTasks	97.75% <100.00%> (ø)

Files	Coverage Δ
helpers/metrics.py	100.00% <100.00%> (ø)
services/report/prometheus_metrics.py	100.00% <100.00%> (ø)
services/report/report_processor.py	94.52% <100.00%> (-0.08%)	⬇️
tasks/upload_finisher.py	73.73% <87.50%> (+0.82%)	⬆️

This change has been scanned for critical changes. Learn more

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ FileNotInStorageError: File v4/repos/B84EA580EF5930DE7DFA8855BF62A25F/commits/0d544eaacf41e39b50c9e537fe0e759cc58465f4/c... app.tasks.upload.UploadFinisher View Issue

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