root
c9bf21be0e
Some checks failed
构建并部署 AI Agent 服务 / deploy (push) Has been cancelled
主要修复： 1. 修复 RAG 推理无限循环问题（大小写不匹配 + 缺少已检索结果检查） 2. 修复 intent_classifier.py 的绝对导入错误 3. 删除旧的 start.sh 脚本，添加新的启动脚本 4. 优化路由逻辑和状态管理
372 lines
13 KiB
Python
372 lines
13 KiB
Python
"""
|
||
整合后的完整主图构建器 - 所有节点都直接操作 MainGraphState
|
||
"""
|
||
|
||
from ..graph import StateGraph, START, END
|
||
from typing import Dict, Any, Optional
|
||
from langchain_core.runnables.config import RunnableConfig
|
||
|
||
from ..state import MainGraphState
|
||
from ..nodes.react_nodes import (
|
||
init_state_node,
|
||
react_reason_node,
|
||
web_search_node,
|
||
error_handling_node,
|
||
route_by_reasoning
|
||
)
|
||
from ..nodes.hybrid_router import (
|
||
hybrid_router_node,
|
||
fast_chitchat_node,
|
||
fast_rag_node,
|
||
fast_tool_node,
|
||
route_from_hybrid_decision,
|
||
check_fast_path_success
|
||
)
|
||
from ..nodes.llm_call import create_llm_call_node
|
||
from ..nodes.rag_nodes import rag_retrieve_node
|
||
from ..nodes.retrieve_memory import create_retrieve_memory_node
|
||
from ..nodes.memory_trigger import memory_trigger_node, set_mem0_client
|
||
from ..nodes.summarize import create_summarize_node
|
||
from ..nodes.finalize import finalize_node
|
||
from ...subgraphs.contact import build_contact_subgraph
|
||
from ...subgraphs.dictionary import build_dictionary_subgraph
|
||
from ...subgraphs.news_analysis import build_news_analysis_subgraph
|
||
from ...memory.mem0_client import Mem0Client
|
||
from ...logger import info, debug
|
||
|
||
|
||
# ========== 检查是否需要总结 ==========
|
||
def should_summarize(state: MainGraphState) -> str:
|
||
"""
|
||
检查是否需要总结对话（对话足够长时）
|
||
|
||
Args:
|
||
state: 当前图状态
|
||
|
||
Returns:
|
||
"summarize" 或 "finalize"
|
||
"""
|
||
if state.turns_since_last_summary >= 5: # 每5轮对话总结一次
|
||
return "summarize"
|
||
else:
|
||
return "finalize"
|
||
|
||
|
||
# ========== 子图包装器（处理子图错误传递）==========
|
||
def wrap_subgraph_for_error_handling(subgraph, name: str):
|
||
"""
|
||
包装子图，使其错误能传递给主图
|
||
|
||
Args:
|
||
subgraph: 编译好的子图
|
||
name: 子图名称（用于错误标识）
|
||
|
||
Returns: 包装后的节点函数
|
||
"""
|
||
async def wrapped_node(state: MainGraphState, config: Optional[Dict[str, Any]] = None) -> MainGraphState:
|
||
# 发送子图开始事件
|
||
if config:
|
||
try:
|
||
from langchain_core.callbacks.manager import adispatch_custom_event
|
||
callbacks = config.get("callbacks")
|
||
if callbacks:
|
||
await adispatch_custom_event(
|
||
"react_reasoning",
|
||
{
|
||
"step": state.reasoning_step,
|
||
"action": f"{name}_subgraph_start",
|
||
"confidence": 1.0,
|
||
"reasoning": f"开始执行 {name} 子图..."
|
||
},
|
||
callbacks=callbacks
|
||
)
|
||
except Exception as e:
|
||
info(f"[{name}_subgraph] 无法发送开始事件: {e}")
|
||
|
||
try:
|
||
# 调用子图
|
||
result = subgraph.invoke(state)
|
||
|
||
# 更新主图状态
|
||
subgraph_result = None
|
||
if name == "contact":
|
||
state.contact_result = result
|
||
subgraph_result = result.get("final_result", "")
|
||
elif name == "dictionary":
|
||
state.dictionary_result = result
|
||
subgraph_result = result.get("final_result", "")
|
||
elif name == "news_analysis":
|
||
state.news_result = result
|
||
subgraph_result = result.get("final_result", "")
|
||
|
||
# 关键：设置最终结果
|
||
if subgraph_result:
|
||
state.final_result = subgraph_result
|
||
else:
|
||
state.final_result = "子图执行完成"
|
||
|
||
# 标记成功
|
||
state.success = True
|
||
state.current_phase = "done"
|
||
# 标记不再需要推理，避免循环
|
||
state.reasoning_history.append({
|
||
"step": state.reasoning_step,
|
||
"action": "subgraph_completed",
|
||
"confidence": 1.0,
|
||
"reasoning": f"{name}子图执行完成",
|
||
"timestamp": datetime.now().isoformat()
|
||
})
|
||
|
||
# 发送子图完成事件
|
||
if config:
|
||
try:
|
||
from langchain_core.callbacks.manager import adispatch_custom_event
|
||
callbacks = config.get("callbacks")
|
||
if callbacks:
|
||
await adispatch_custom_event(
|
||
"react_reasoning",
|
||
{
|
||
"step": state.reasoning_step,
|
||
"action": f"{name}_subgraph_complete",
|
||
"confidence": 1.0,
|
||
"reasoning": f"{name} 子图执行完成"
|
||
},
|
||
callbacks=callbacks
|
||
)
|
||
except Exception as e:
|
||
info(f"[{name}_subgraph] 无法发送完成事件: {e}")
|
||
|
||
return state
|
||
|
||
except Exception as e:
|
||
# 捕获子图错误，传递给主图
|
||
from ..state import ErrorRecord, ErrorSeverity
|
||
from datetime import datetime
|
||
|
||
error_record = ErrorRecord(
|
||
error_type=f"{name}SubgraphError",
|
||
error_message=str(e),
|
||
severity=ErrorSeverity.WARNING,
|
||
source=f"{name}_subgraph",
|
||
timestamp=datetime.now().isoformat(),
|
||
retry_count=0,
|
||
max_retries=1,
|
||
context={"user_query": state.user_query}
|
||
)
|
||
state.errors.append(error_record)
|
||
state.current_error = error_record
|
||
state.current_phase = "error_handling"
|
||
state.success = False
|
||
|
||
# 发送子图错误事件
|
||
if config:
|
||
try:
|
||
from langchain_core.callbacks.manager import adispatch_custom_event
|
||
callbacks = config.get("callbacks")
|
||
if callbacks:
|
||
await adispatch_custom_event(
|
||
"react_reasoning",
|
||
{
|
||
"step": state.reasoning_step,
|
||
"action": f"{name}_subgraph_error",
|
||
"confidence": 1.0,
|
||
"reasoning": f"{name} 子图执行失败: {str(e)}"
|
||
},
|
||
callbacks=callbacks
|
||
)
|
||
except Exception as e:
|
||
info(f"[{name}_subgraph] 无法发送错误事件: {e}")
|
||
|
||
return state
|
||
|
||
return wrapped_node
|
||
|
||
# ========== 主图构建 ==========
|
||
|
||
def build_react_main_graph(llm=None, tools=None, mem0_client=None, use_hybrid_router: bool = True) -> StateGraph:
|
||
"""
|
||
构建整合后的完整主图（支持混合路由）
|
||
|
||
Args:
|
||
llm: LangChain ChatModel 实例
|
||
tools: 工具列表
|
||
mem0_client: Mem0 客户端实例
|
||
use_hybrid_router: 是否使用混合路由（快速路径 + React 循环）
|
||
|
||
Returns:
|
||
StateGraph: 构建好的图
|
||
"""
|
||
# 创建图
|
||
graph = StateGraph(MainGraphState)
|
||
|
||
# 设置全局 mem0_client
|
||
if mem0_client:
|
||
set_mem0_client(mem0_client)
|
||
|
||
# 创建节点
|
||
llm_node = None
|
||
if llm is not None:
|
||
llm_node = create_llm_call_node(llm, tools or [])
|
||
|
||
retrieve_memory_node = None
|
||
summarize_node = None
|
||
if mem0_client:
|
||
retrieve_memory_node = create_retrieve_memory_node(mem0_client)
|
||
summarize_node = create_summarize_node(mem0_client)
|
||
|
||
# ========== 添加节点 ==========
|
||
|
||
# 第一阶段：记忆检索
|
||
if retrieve_memory_node:
|
||
graph.add_node("retrieve_memory", retrieve_memory_node)
|
||
graph.add_node("memory_trigger", memory_trigger_node)
|
||
|
||
# 第二阶段：初始化
|
||
graph.add_node("init_state", init_state_node)
|
||
|
||
# ========== 混合路由节点（如果启用） ==========
|
||
if use_hybrid_router:
|
||
graph.add_node("hybrid_router", hybrid_router_node)
|
||
graph.add_node("fast_chitchat", fast_chitchat_node)
|
||
graph.add_node("fast_rag", fast_rag_node)
|
||
graph.add_node("fast_tool", fast_tool_node)
|
||
|
||
# 第三阶段：React 循环推理（始终保留）
|
||
graph.add_node("react_reason", react_reason_node)
|
||
graph.add_node("rag_retrieve", rag_retrieve_node)
|
||
graph.add_node("web_search", web_search_node)
|
||
graph.add_node("handle_error", error_handling_node)
|
||
|
||
if llm_node is not None:
|
||
graph.add_node("llm_call", llm_node)
|
||
|
||
# 子图节点
|
||
contact_graph = build_contact_subgraph()
|
||
dictionary_graph = build_dictionary_subgraph()
|
||
news_analysis_graph = build_news_analysis_subgraph()
|
||
|
||
graph.add_node(
|
||
"contact_subgraph",
|
||
wrap_subgraph_for_error_handling(contact_graph.compile(), "contact")
|
||
)
|
||
graph.add_node(
|
||
"dictionary_subgraph",
|
||
wrap_subgraph_for_error_handling(dictionary_graph.compile(), "dictionary")
|
||
)
|
||
graph.add_node(
|
||
"news_analysis_subgraph",
|
||
wrap_subgraph_for_error_handling(news_analysis_graph.compile(), "news_analysis")
|
||
)
|
||
|
||
# 第四阶段：完成处理
|
||
if summarize_node:
|
||
graph.add_node("summarize", summarize_node)
|
||
graph.add_node("finalize", finalize_node)
|
||
|
||
# ========== 添加边 ==========
|
||
|
||
# 第一阶段：记忆检索
|
||
if retrieve_memory_node:
|
||
graph.add_edge(START, "retrieve_memory")
|
||
graph.add_edge("retrieve_memory", "memory_trigger")
|
||
else:
|
||
graph.add_edge(START, "memory_trigger")
|
||
|
||
# 进入初始化
|
||
graph.add_edge("memory_trigger", "init_state")
|
||
|
||
# ========== 混合路由分支（如果启用） ==========
|
||
if use_hybrid_router:
|
||
graph.add_edge("init_state", "hybrid_router")
|
||
|
||
# 从 hybrid_router 条件分支
|
||
graph.add_conditional_edges(
|
||
"hybrid_router",
|
||
route_from_hybrid_decision,
|
||
{
|
||
"fast_chitchat": "fast_chitchat",
|
||
"fast_rag": "fast_rag",
|
||
"fast_tool": "fast_tool",
|
||
"react_loop": "react_reason"
|
||
}
|
||
)
|
||
|
||
# 快速路径的完成检查
|
||
for fast_node in ["fast_chitchat", "fast_rag", "fast_tool"]:
|
||
graph.add_conditional_edges(
|
||
fast_node,
|
||
check_fast_path_success,
|
||
{
|
||
"success": "finalize",
|
||
"escalate": "react_reason"
|
||
}
|
||
)
|
||
|
||
info(f"✅ [图构建] 混合路由模式已启用")
|
||
else:
|
||
# 无混合路由，直接到 react_reason
|
||
graph.add_edge("init_state", "react_reason")
|
||
info(f"✅ [图构建] 纯 React 模式")
|
||
|
||
# ========== React 循环边（始终保留） ==========
|
||
graph.add_conditional_edges(
|
||
"react_reason",
|
||
route_by_reasoning,
|
||
{
|
||
"rag_retrieve": "rag_retrieve",
|
||
"web_search": "web_search",
|
||
"contact_subgraph": "contact_subgraph",
|
||
"dictionary_subgraph": "dictionary_subgraph",
|
||
"news_analysis_subgraph": "news_analysis_subgraph",
|
||
"handle_error": "handle_error",
|
||
"llm_call": "llm_call"
|
||
}
|
||
)
|
||
|
||
# 循环边（rag、web_search、子图、error都回到 reason）
|
||
graph.add_edge("rag_retrieve", "react_reason")
|
||
graph.add_edge("web_search", "react_reason")
|
||
graph.add_edge("contact_subgraph", "react_reason")
|
||
graph.add_edge("dictionary_subgraph", "react_reason")
|
||
graph.add_edge("news_analysis_subgraph", "react_reason")
|
||
graph.add_edge("handle_error", "react_reason")
|
||
|
||
# ========== 最终完成阶段 ==========
|
||
if llm_node is not None:
|
||
if summarize_node:
|
||
# 检查是否需要总结
|
||
graph.add_conditional_edges(
|
||
"llm_call",
|
||
should_summarize,
|
||
{
|
||
"summarize": "summarize",
|
||
"finalize": "finalize"
|
||
}
|
||
)
|
||
graph.add_edge("summarize", "finalize")
|
||
else:
|
||
# 没有 summarize 节点，直接 finalize
|
||
graph.add_edge("llm_call", "finalize")
|
||
|
||
# 完成
|
||
graph.add_edge("finalize", END)
|
||
|
||
info(f"✅ [图构建] 整合后的完整主图构建完成（混合路由: {use_hybrid_router}）")
|
||
|
||
return graph
|
||
|
||
|
||
# ========== 兼容性：保留旧的函数名 ==========
|
||
def build_main_graph() -> StateGraph:
|
||
"""
|
||
兼容性函数：旧代码调用 build_main_graph() 时返回 React 版本
|
||
"""
|
||
return build_react_main_graph()
|
||
|
||
|
||
# ========== 导出 ==========
|
||
__all__ = [
|
||
"build_react_main_graph",
|
||
"build_main_graph",
|
||
"wrap_subgraph_for_error_handling"
|
||
] |