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[PR #28320] fix(ops): add streaming metrics and LLM span for agent-chat traces #32015

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opened 2026-02-21 20:50:35 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 20:50:35 -05:00
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Original Pull Request: https://github.com/langgenius/dify/pull/28320

State: closed
Merged: Yes

Important

  1. Make sure you have read our contribution guidelines
  2. Ensure there is an associated issue and you have been assigned to it
  3. Use the correct syntax to link this PR: Fixes #<issue number>.

Summary

Fix https://github.com/langgenius/dify/issues/28319

This PR contains the following changes.

  • Track first/last token times in EasyUITaskState
  • Persist streaming metrics (TTFT, TTG) to message metadata
  • Add dedicated LLM child span with model attributes
  • Include provider latency and tokens in Message serialization

Screenshots

Clipboard_Screenshot_1763449774

Checklist

  • This change requires a documentation update, included: Dify Document
  • I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
  • I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
  • I've updated the documentation accordingly.
  • I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
**Original Pull Request:** https://github.com/langgenius/dify/pull/28320 **State:** closed **Merged:** Yes --- > [!IMPORTANT] > > 1. Make sure you have read our [contribution guidelines](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) > 1. Ensure there is an associated issue and you have been assigned to it > 1. Use the correct syntax to link this PR: `Fixes #<issue number>`. ## Summary Fix https://github.com/langgenius/dify/issues/28319 This PR contains the following changes. - Track first/last token times in EasyUITaskState - Persist streaming metrics (TTFT, TTG) to message metadata - Add dedicated LLM child span with model attributes - Include provider latency and tokens in Message serialization ## Screenshots <img width="1484" height="867" alt="Clipboard_Screenshot_1763449774" src="https://github.com/user-attachments/assets/f9e779c3-3cd3-42f5-bfa9-19801fad7fd1" /> ## Checklist - [ ] This change requires a documentation update, included: [Dify Document](https://github.com/langgenius/dify-docs) - [x] I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!) - [x] I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change. - [x] I've updated the documentation accordingly. - [x] I ran `dev/reformat`(backend) and `cd web && npx lint-staged`(frontend) to appease the lint gods
yindo added the pull-request label 2026-02-21 20:50:35 -05:00
yindo closed this issue 2026-02-21 20:50:35 -05:00
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Reference: langgenius/dify#32015
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