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[DERCBOT-1746] Langfuse V3 Callback Fixes #1954

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[DERCBOT-1746] Langfuse V3 Callback Fixes #1954

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@scezen scezen commented Dec 2, 2025 •
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Ticket : DERCBOT-1746

Details

  • Migrated from deprecated langfuse.callback API to the new langfuse.langchain module.
  • Updated the LangfuseCallbackHandlerFactory to align with the new Langfuse V3 client.
  • Added internal caching for the Langfuse client to avoid repeated initializations.
  • Updated the observability service to use the new get_client() API and revised trace extraction logic.
  • Adjusted the RAG chain execution to pass metadata (user, session, tags) using the new supported mechanism.
  • Cleaned up unused parameters and removed unsupported kwargs that Langfuse no longer handles.

@scezen scezen marked this pull request as ready for review December 2, 2025 10:19
Benvii
Benvii requested changes Dec 5, 2025
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Thanks small issue in get_observability_info.

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