docs: outputs: opentelemetry: add OAuth2 client credentials and worke…

[eschabell]

Add 16 oauth2.* configuration parameters introduced by the out_opentelemetry OAuth2 client credentials support:

• oauth2.enable: enable OAuth2 client credentials flow
• oauth2.token_url: token endpoint URL
• oauth2.client_id / oauth2.client_secret: client credentials
• oauth2.scope / oauth2.audience / oauth2.resource: optional parameters
• oauth2.auth_method: basic, post, or private_key_jwt (default: basic)
• oauth2.jwt_key_file / oauth2.jwt_cert_file: private_key_jwt key material
• oauth2.jwt_aud / oauth2.jwt_header / oauth2.jwt_ttl_seconds: JWT options
• oauth2.refresh_skew_seconds: token refresh lead time (default: 60)
• oauth2.timeout / oauth2.connect_timeout: token request timeouts

Also add the missing workers parameter (default: 0) which is supported by all outputs via the framework but was undocumented here.

Fixes #2484

Summary by CodeRabbit

• Documentation
  • Added OAuth 2.0 authentication configuration options for the OpenTelemetry output plugin, including token management, client credentials, JWT settings, and authentication methods.
  • Added workers configuration parameter to control the number of workers used for flush operations.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b75c995b-d127-4787-91fb-83060a9b1bc4

📥 Commits

Reviewing files that changed from the base of the PR and between 21b6f3c and bd7bfbd.

📒 Files selected for processing (1)

• pipeline/outputs/opentelemetry.md

---

📝 Walkthrough

Walkthrough

Documentation update to the OpenTelemetry output plugin that adds a comprehensive OAuth 2.0 client credentials configuration section mirroring the HTTP output plugin, along with a new workers parameter for controlling flush operation concurrency.

Changes

Cohort / File(s)	Summary
OpenTelemetry Output Documentation pipeline/outputs/opentelemetry.md	Added OAuth 2.0 client credentials config keys (enable, token_url, client credentials, authentication method, JWT fields, timeouts, scope, audience, resource, refresh skew) and workers configuration entry.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• cosmo0920
• patrick-stephens

Poem

🐰 Oauth blooms in telemetry's field,
Workers now control the yield,
Configuration keys all set,
Security tokens, no regret!
Documentation shines so bright,
OpenTelemetry reaches new height! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main changes: adding OAuth2 client credentials documentation and the workers parameter to the OpenTelemetry output plugin documentation.
Linked Issues check	✅ Passed	The PR successfully documents all 16 OAuth2 parameters and the workers parameter as required by issue #2484, providing complete coverage of the requested configuration keys and defaults.
Out of Scope Changes check	✅ Passed	All changes are within scope—the PR updates only the OpenTelemetry output documentation to add OAuth2 and workers configuration parameters as specified in issue #2484, with no extraneous modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

📝 Coding Plan

• Generate coding plan for human review comments

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[eschabell]

@patrick-stephens and @cosmo0920 ready for review!