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exporters/autoexport: add support for comma-separated values for OTEL_{METRICS,TRACES,LOGS}_EXPORTER #5830

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@thomasgouveia thomasgouveia commented Jul 1, 2024

This PR introduces the support of comma-separated values for the following environment variables:

  • OTEL_TRACES_EXPORTER
  • OTEL_LOGS_EXPORTER
  • OTEL_METRICS_EXPORTER

The functions NewLogExporter, NewMetricReader, and NewSpanExporter are now deprecated but will continue to work to ensure backward compatibility. Users must consider moving to NewLogExporters, NewMetricReaders, and NewSpanExporters to initialize one or more exporters. (See example_test.go).

Unit tests were adapted to use the newly created functions. A test has been added for each signal to ensure the respective deprecated function continues working.

Blocked by #5816 (will need to be rebased once merged)

Closes #4471

@thomasgouveia thomasgouveia requested a review from a team July 1, 2024 14:42
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codecov bot commented Jul 1, 2024

Codecov Report

Attention: Patch coverage is 83.54430% with 13 lines in your changes missing coverage. Please review.

Project coverage is 65.7%. Comparing base (d0309dd) to head (aaf4d78).

Files Patch % Lines
exporters/autoexport/logs.go 57.1% 5 Missing and 1 partial ⚠️
exporters/autoexport/metrics.go 76.9% 2 Missing and 1 partial ⚠️
exporters/autoexport/spans.go 81.8% 2 Missing ⚠️
exporters/autoexport/utils/env/env.go 83.3% 1 Missing and 1 partial ⚠️
Additional details and impacted files

Impacted file tree graph

@@          Coverage Diff          @@
##            main   #5830   +/-   ##
=====================================
  Coverage   65.6%   65.7%           
=====================================
  Files        204     206    +2     
  Lines      12974   13027   +53     
=====================================
+ Hits        8522    8565   +43     
- Misses      4198    4205    +7     
- Partials     254     257    +3     
Files Coverage Δ
exporters/autoexport/factory.go 100.0% <100.0%> (ø)
exporters/autoexport/registry.go 100.0% <100.0%> (ø)
exporters/autoexport/signal.go 100.0% <100.0%> (ø)
exporters/autoexport/spans.go 93.5% <81.8%> (+1.2%) ⬆️
exporters/autoexport/utils/env/env.go 83.3% <83.3%> (ø)
exporters/autoexport/metrics.go 78.6% <76.9%> (-0.3%) ⬇️
exporters/autoexport/logs.go 80.6% <57.1%> (-19.4%) ⬇️

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(haven't gone through the PR yet)

CHANGELOG.md Outdated Show resolved Hide resolved
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dmathieu commented Jul 1, 2024

This is a rather large PR which, at a first glance, seems not to include only what's described in the PR title. Could it be split into smaller PRs?

…OTEL_*_EXPORTER (open-telemetry#4471)

This commit introduces the support of comma-separated value for OTEL_{METRICS,TRACES,LOGS}_EXPORTER.
New functions can now be used to intialize a list of exporters: NewMetricReaders, NewLogExporters, NewSpanExporters.

Old ones (NewMetricReader, NewLogExporter, NewSpanExporter) are now deprecated but still continue to do they initial work to avoid breaking change.

Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
Signed-off-by: thomasgouveia <gouveia.thomas@outlook.fr>
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Hi @dmathieu, I've updated the PR to remove code changes unrelated to the feature. Let me know if I missed something!

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Hi @dmathieu, @pellared, any additional feedback for this one?

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autoexport: Accept a comma-separated list to enable setting multiple exporters
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