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refactor: add LANGCHAIN_GRAPH_RECURSION_LIMIT env to avoid the error "GraphRecursionError: Recursion limit of 25 reached without hitting a stop condition. You can increase the limit by setting the recursion_limit config key. For troubleshooting, visit: https://python.langchain.com/docs/troubleshooting/errors/GRAPH_RECURSION_LIMIT "

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liqiang-fit2cloud 2025-12-12 18:47:46 +08:00 committed by 刘瑞斌
parent 585302a2c9
commit 967eedeca3
1 changed files with 2 additions and 2 deletions
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4
apps/application/flow/tools.py
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@ -12,7 +12,7 @@ import queue
import re
import threading
from typing import Iterator
from maxkb.const import CONFIG
from django.http import StreamingHttpResponse
from langchain_core.messages import BaseMessageChunk, BaseMessage, ToolMessage, AIMessageChunk
from langchain_mcp_adapters.client import MultiServerMCPClient
@ -313,7 +313,7 @@ async def _yield_mcp_response(chat_model, message_list, mcp_servers, mcp_output_
try:
client = MultiServerMCPClient(json.loads(mcp_servers))
tools = await client.get_tools()
agent = create_react_agent(chat_model, tools)
agent = create_react_agent(chat_model, tools).configure(recursion_limit=(int(CONFIG.get("LANGCHAIN_GRAPH_RECURSION_LIMIT", '25'))))
response = agent.astream({"messages": message_list}, stream_mode='messages')
# 用于存储工具调用信息（按 tool_id）以及按 index 聚合分片