chore: adds admin mode

[hassiebp]

Problem

Changes

Release info Sub-libraries affected

Bump level

• Major
• Minor
• Patch

Libraries affected

• All of them
• langfuse
• langfuse-node

Changelog notes

• Added support for X

---

Important

Adds admin mode to Langfuse SDK to store events locally, with tests verifying no network requests in this mode.

• Behavior:
  • Introduces admin mode in LangfuseCoreStateless to store events locally instead of sending to server when LANGFUSE_SDK_ADMIN_ENABLED is true.
  • Adds _shutdownAdmin() to retrieve stored events in admin mode.
• Tests:
  • Adds test should export events in admin mode in langfuse-integration-langchain.spec.ts to verify event storage and retrieval.
  • Adds test should not send events in admin mode in langfuse.flush.spec.ts to ensure no network requests are made in admin mode.

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Name	Status	Preview	Updated (UTC)
langfuse-js	✅ Ready (Inspect)	Visit Preview	Nov 20, 2024 8:39am

[greptile-apps]

Disclaimer: Experimental PR review

PR Summary

Added admin mode functionality to Langfuse SDK allowing events to be stored locally instead of being sent to the server, with environment variable control and integration test coverage.

• Added adminEnabled flag and adminIngestionEvents array in langfuse-core/src/index.ts to store events locally when admin mode is active
• Added _shutdownAdmin() method to retrieve stored events and clear buffer when admin mode is enabled
• Added integration test in integration-test/langfuse-integration-langchain.spec.ts verifying correct event sequence generation in admin mode
• Modified flush logic to prevent server calls when admin mode is enabled via LANGFUSE_SDK_ADMIN_ENABLED environment variable
• Added test case in langfuse-core/test/langfuse.flush.spec.ts to verify no fetch calls occur in admin mode

_{3 file(s) reviewed, 1 comment(s)
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[hassiebp]

TODO: think about additional protection to have events scoped to a projectId only