Fix log analysis agent: Addressed Parsing crash and model incompatibility issues - #411
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venkatesh71097 wants to merge 3 commits into
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Fix log analysis agent: Addressed Parsing crash and model incompatibility issues#411venkatesh71097 wants to merge 3 commits into
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Mar 21, 2026
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🛠️ Fix Log Analysis Agent: Robust Parsing & Bug Fixes
📋 Summary
This PR addresses critical stability issues in the log analysis agent caused by model incompatibility and output parsing failures. It specifically fixes the AttributeError: 'NoneType' crash, handles reasoning models (like llama-3.3-nemotron) gracefully, and resolves Pydantic deprecation warnings.
🐛 Issues Fixed
- Deprecation Warnings: Resolved LangChainDeprecationWarning related to pydantic_v1.
🚀 Changes
| Component | Change Description |
|-----------|--------------------|
| utils.py | Implemented a robust regex-based parsing pipeline. It now aggressively strips <think> reasoning tags before parsing JSON, ensuring stability even with "chatty" or reasoning-heavy models. Restored missing import json. |
| graphnodes.py | Added defensive coding with .get() access and null checks to handle graceful degradation if a grader returns None. |
| graphedges.py | Updated logic to correctly handle dictionary outputs instead of expecting Pydantic objects. |
| binary_score_models.py | Migrated to direct pydantic (v2) imports. |
| .gitignore | Added ignore rules for .env, debug_log.txt, and .venv/. |