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fix(sdk-node): Allow Defining Sampler with Exporter in Env #4394

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JacksonWeber
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@JacksonWeber JacksonWeber commented Dec 29, 2023

Which problem is this PR solving?

Previously if the exporter was defined via the environment, any configured values like samplers would not be read from the NodeSDK configuration. By updating the check we allow for those configurations to be read even if the traceExporter/spanProcessor is not defined directly in the NodeSDK configuration.

Fixes #4212
Fixes #4004

Short description of the changes

Modies the SDK such that if the trace exporter is configured via the environment we still create/configure the tracerProvider.

Type of change

Please delete options that are not relevant.

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • This change requires a documentation update

How Has This Been Tested?

Tested locally using a sample application to confirm that the changes allow the sampler to be read from the NodeSDK configuration even when the exporter is not defined outside of the environment.

Also added a test to ensure that when the exporter is defined in the environment that the appropriate tracerProvider is created.

Checklist:

  • Followed the style guidelines of this project
  • Unit tests have been added
  • Documentation has been updated

@JacksonWeber JacksonWeber requested a review from a team December 29, 2023 06:00
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codecov bot commented Dec 29, 2023

Codecov Report

Merging #4394 (a639e1c) into main (ac75b70) will decrease coverage by 0.16%.
The diff coverage is 100.00%.

❗ Current head a639e1c differs from pull request most recent head 7bd5316. Consider uploading reports for the commit 7bd5316 to get more accurate results

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #4394      +/-   ##
==========================================
- Coverage   92.39%   92.23%   -0.16%     
==========================================
  Files         331      336       +5     
  Lines        9518     9533      +15     
  Branches     2022     2021       -1     
==========================================
- Hits         8794     8793       -1     
- Misses        724      740      +16     
Files Coverage Δ
...imental/packages/opentelemetry-sdk-node/src/sdk.ts 92.80% <100.00%> (ø)

... and 6 files with indirect coverage changes

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@pichlermarc pichlermarc left a comment

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Looks good % changelog nit
Thanks for taking care of this 🙂

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I had another look, as I was wondering how this affects the setup when

  • a sampler is configured manually
  • an exporter is configured via the environment

and now it looks like the sampler is configured, but the exporter is not. @JacksonWeber would you mind having another look to verify? I think we'd want the config to merge so that the exporter is configured via the environment, but the sampler is set to what's passed to NodeSDK.

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I had another look, as I was wondering how this affects the setup when

  • a sampler is configured manually
  • an exporter is configured via the environment

and now it looks like the sampler is configured, but the exporter is not. @JacksonWeber would you mind having another look to verify? I think we'd want the config to merge so that the exporter is configured via the environment, but the sampler is set to what's passed to NodeSDK.

Took a look into this. You were correct that it would ignore the configured exporter. I've updated the logic to use a TraceProviderWithEnvExporters in the case that the OTEL_TRACES_EXPORTER is defined, even if the rest of the configuration options are populated manually.

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Hmm, now it seems like two span processors are registered, one with the correct exporter (if set via an env var) and the other without an exporter.

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experimental/packages/opentelemetry-sdk-node/src/sdk.ts Outdated Show resolved Hide resolved
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Looks good, thanks for working on this and thanks for taking the time to address the comment 🙂

Just a few test nits then this PR should be ready to merge. 🙂

@dyladan dyladan merged commit efa6307 into open-telemetry:main Jan 31, 2024
18 checks passed
Zirak pushed a commit to Zirak/opentelemetry-js that referenced this pull request Sep 14, 2024
…metry#4394)

* fix(sdk-node): Allow tracerProvider to be created when exporter is defined in the env.

* fix(node-sdk): Update to not accept when exporter is set to none.

* fix(sdk-node): Update Changelog.

* fix(sdk-node): Fix Changelog.

* fix(sdk-node): cleanup changelog.

* fix(sdk-node): lint fix

* fix(sdk-node): Fix logic for creating tracerProviders.

* Fix lint.

* Update experimental/CHANGELOG.md

Co-authored-by: Marc Pichler <[email protected]>

* Fix manual sampler and environment exporter case.

* Update logic to check for a defined traceExporter on the config before using the NodeTracerProvider.

* Fix equality check.

* Update env exporter configuration logic and add tests.

* Update experimental/CHANGELOG.md

Co-authored-by: Marc Pichler <[email protected]>

* Fix changelog issues.

* Clean up tracerProvider logic.

* Update sdk.ts

* Update sdk.ts

* Update experimental/packages/opentelemetry-sdk-node/test/sdk.test.ts

Co-authored-by: Marc Pichler <[email protected]>

* Update experimental/packages/opentelemetry-sdk-node/test/sdk.test.ts

Co-authored-by: Marc Pichler <[email protected]>

* Update experimental/packages/opentelemetry-sdk-node/test/sdk.test.ts

Co-authored-by: Marc Pichler <[email protected]>

---------

Co-authored-by: Marc Pichler <[email protected]>
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