整合旧图和新图：添加完整的记忆检索、总结和完成流程

backend/app/agent/agent_service.py

@@ -13,7 +13,7 @@ from app.main_graph.config import set_stream_writer
 from ..model_services.chat_services import get_all_chat_services, LocalVLLMChatProvider
 from app.main_graph.utils.rag_initializer import init_rag_tool
 from app.core.intent_classifier import get_intent_classifier
-from app.logger import info, warning
+from app.logger import info, warning, error
 from app.main_graph.state import MainGraphState, CurrentAction
 
 
@@ -27,8 +27,19 @@ class AIAgentService:
         self.intent_classifier = get_intent_classifier()
         # RAG 管道（可选，需要时设置）
         self.rag_pipeline = None
+        # Mem0 客户端
+        self.mem0_client = None
 
     async def initialize(self):
+        # 0. 初始化 Mem0 客户端
+        from app.memory.mem0_client import Mem0Client
+        # 创建一个临时的 LLM 用于 Mem0（用第一个可用的）
+        chat_services = get_all_chat_services()
+        temp_llm = None
+        if chat_services:
+            temp_llm = list(chat_services.values())[0]
+        self.mem0_client = Mem0Client(temp_llm)
+        
         # 1. 初始化 RAG 工具（如果需要）
         def create_local_llm():
             provider = LocalVLLMChatProvider()
@@ -42,11 +53,14 @@ class AIAgentService:
             set_global_rag_tool(rag_tool)
 
         # 2. 构建各模型的 Graph（使用新版 React 模式）
-        chat_services = get_all_chat_services()
         for name, llm in chat_services.items():
             try:
                 info(f"🔄 初始化模型 '{name}'...")
-                graph = build_react_main_graph(llm=llm, tools=self.tools).compile(checkpointer=self.checkpointer)
+                graph = build_react_main_graph(
+                    llm=llm, 
+                    tools=self.tools,
+                    mem0_client=self.mem0_client
+                ).compile(checkpointer=self.checkpointer)
                 self.graphs[name] = graph
                 info(f"✅ 模型 '{name}' 初始化成功")
             except Exception as e:

backend/app/main_graph/nodes/llm_call.py

@@ -126,6 +126,9 @@ def create_llm_call_node(llm, tools: list):
                 debug(f"📋 [LLM统计] 详细用量: {token_usage}")
             debug("="*80 + "\n")
 
+            # 检查是否有工具调用
+            has_tool_calls = hasattr(response, 'tool_calls') and len(response.tool_calls) > 0
+            
             result = {
                 "messages": [response],
                 "llm_calls": getattr(state, 'llm_calls', 0) + 1,
@@ -134,7 +137,8 @@ def create_llm_call_node(llm, tools: list):
                 "turns_since_last_summary": getattr(state, 'turns_since_last_summary', 0) + 1,
                 "final_result": response.content,
                 "success": True,
-                "current_phase": "done"
+                "current_phase": "done",
+                "has_tool_calls": has_tool_calls
             }
 
             log_state_change("llm_call", {**state, **result}, "离开")

backend/app/main_graph/utils/main_graph_builder.py

@@ -1,12 +1,13 @@
 """
-React 模式主图构建器 - 完整循环推理版本
-Main Graph Builder - Full React Mode with Loop Reasoning
+整合后的完整主图构建器 - 结合旧图和新图的优点
+Main Graph Builder - Integrated Full Version (Old + New)
 """
 
 from app.main_graph.graph import StateGraph, START, END
-from typing import Dict, Any
+from typing import Dict, Any, Optional
+from langchain_core.runnables.config import RunnableConfig
 
-from app.main_graph.state import MainGraphState, CurrentAction
+from app.main_graph.state import MainGraphState, CurrentAction, MessagesState
 from app.main_graph.nodes.react_nodes import (
     init_state_node,
     react_reason_node,
@@ -16,12 +17,30 @@ from app.main_graph.nodes.react_nodes import (
 )
 from app.main_graph.nodes.llm_call import create_llm_call_node
 from app.main_graph.nodes.rag_nodes import rag_retrieve_node
+from app.main_graph.nodes.retrieve_memory import create_retrieve_memory_node
+from app.main_graph.nodes.memory_trigger import memory_trigger_node, set_mem0_client
+from app.main_graph.nodes.summarize import create_summarize_node
+from app.main_graph.nodes.finalize import finalize_node
 from app.subgraphs.contact import build_contact_subgraph
 from app.subgraphs.dictionary import build_dictionary_subgraph
 from app.subgraphs.news_analysis import build_news_analysis_subgraph
+from app.memory.mem0_client import Mem0Client
+from app.logger import info, debug
 
 
-# ========== 子图包装器（处理子图错误传递） ==========
+# ========== 全局变量（用于传递 mem0_client）==========
+# 这样就不用改旧节点的签名了
+_global_mem0_client: Optional[Mem0Client] = None
+
+
+def set_global_mem0_client(client: Mem0Client):
+    """设置全局的 mem0_client"""
+    global _global_mem0_client
+    _global_mem0_client = client
+    set_mem0_client(client)  # 同时设置给 memory_trigger_node
+
+
+# ========== 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
@@ -74,64 +93,126 @@ def wrap_subgraph_for_error_handling(subgraph, name: str):
     return wrapped_node
 
 
-# ========== 主图构建 ==========
-def build_react_main_graph(llm=None, tools=None) -> StateGraph:
+# ========== 检查是否需要总结 ==========
+def should_summarize(state: MainGraphState) -> str:
     """
-    构建完整的 React 模式主图
+    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"
+    """
+    messages = getattr(state, 'messages', [])
+    if len(messages) >= 4:
+        return "summarize"
+    else:
+        return "finalize"
 
-    流程：
+
+# ========== 兼容层：让旧节点工作在新状态上 ==========
+def adapt_old_node_for_new_state(old_node):
+    """
+    适配旧节点（期望 MessagesState）到新状态 MainGraphState
+    
+    Args:
+        old_node: 旧节点函数
+    
+    Returns: 适配后的节点函数
+    """
+    async def adapted_node(state: MainGraphState, config: RunnableConfig) -> Dict[str, Any]:
+        # 把 MainGraphState 转换为 MessagesState（旧节点期望的格式）
+        old_state: MessagesState = {
+            "messages": state.messages,
+            "llm_calls": getattr(state, 'llm_calls', 0),
+            "memory_context": getattr(state, 'memory_context', ""),
+            "system_prompt": getattr(state, 'system_prompt', "")
+        }
+        
+        # 调用旧节点
+        result = await old_node(old_state, config)
+        
+        # 把结果更新回 MainGraphState
+        if "memory_context" in result:
+            state.memory_context = result["memory_context"]
+        if "llm_calls" in result:
+            state.llm_calls = result["llm_calls"]
+        
+        return result
+    
+    return adapted_node
+
+
+# ========== 主图构建 ==========
+def build_react_main_graph(llm=None, tools=None, mem0_client=None) -> StateGraph:
+    """
+    构建整合后的完整主图
+    
+    完整流程：
     START
       ↓
-    init_state (初始化)
+    retrieve_memory (从Mem0检索长期记忆) ← 来自旧图
       ↓
-    react_reason (推理) ←──────────────┐
-      ↓                                │
-    条件路由                          │
-      ├─ rag_retrieve →───────────────┤
-      ├─ contact_subgraph →───────────┤
-      ├─ dictionary_subgraph →────────┤
-      ├─ news_analysis_subgraph →─────┤
-      ├─ handle_error → (重试或结束) ─┤
-      └─ llm_call (大模型调用) ←──────┘
+    memory_trigger (记忆触发器) ← 来自旧图
+      ↓
+    init_state (初始化) ← 来自新图
+      ↓
+    react_reason (推理) ←──────────────────────┐
+      ↓                                          │
+    条件路由                                    │
+      ├─ rag_retrieve →─────────────────────────┤
+      ├─ contact_subgraph →─────────────────────┤
+      ├─ dictionary_subgraph →──────────────────┤
+      ├─ news_analysis_subgraph →───────────────┤
+      ├─ web_search →───────────────────────────┤
+      ├─ handle_error → (重试或结束) ───────────┤
+      └─ llm_call (大模型调用) ←────────────────┘
            ↓
-    🔍 观察 (检查 tool_calls)
+    检查：需要总结？
+      ├─ 是 → summarize (提交给Mem0存储) ← 来自旧图
+      └─ 否 → (跳过)
            ↓
-    [有工具调用？]
-      ├─ 是 → 执行工具 → 回到 llm_call
-      └─ 否 → END
+    finalize (发送完成事件) ← 来自旧图
+      ↓
+    END
     """
     # 创建图
     graph = StateGraph(MainGraphState)
     
-    # 创建 llm_call 节点
+    # 设置全局 mem0_client
+    if mem0_client:
+        set_global_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 ==========
     
-    # 1. 初始化节点
+    # 第一阶段：记忆检索（来自旧图）
+    if retrieve_memory_node:
+        graph.add_node("retrieve_memory", adapt_old_node_for_new_state(retrieve_memory_node))
+    graph.add_node("memory_trigger", memory_trigger_node)
+    
+    # 第二阶段：React 循环推理（来自新图）
     graph.add_node("init_state", init_state_node)
-    
-    # 2. React 推理节点
     graph.add_node("react_reason", react_reason_node)
-    
-    # 3. RAG 检索节点
     graph.add_node("rag_retrieve", rag_retrieve_node)
-    
-    # 4. 联网搜索节点
     graph.add_node("web_search", web_search_node)
-    
-    # 5. 错误处理节点
     graph.add_node("handle_error", error_handling_node)
     
-    # 6. LLM 调用节点（真正的大模型输出）
     if llm_node is not None:
         graph.add_node("llm_call", llm_node)
     
-    # ========== 添加子图节点 ==========
-    
-    # 构建并包装子图（带错误处理）
+    # 子图节点
     contact_graph = build_contact_subgraph()
     dictionary_graph = build_dictionary_subgraph()
     news_analysis_graph = build_news_analysis_subgraph()
@@ -149,39 +230,40 @@ def build_react_main_graph(llm=None, tools=None) -> StateGraph:
         wrap_subgraph_for_error_handling(news_analysis_graph.compile(), "news_analysis")
     )
     
+    # 第三阶段：完成处理（来自旧图）
+    if summarize_node:
+        graph.add_node("summarize", adapt_old_node_for_new_state(summarize_node))
+    graph.add_node("finalize", finalize_node)
+    
     # ========== 添加边 ==========
     
-    # 1. START → init_state
-    graph.add_edge(START, "init_state")
+    # 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")
     
-    # 2. init_state → react_reason
+    # 进入第二阶段
+    graph.add_edge("memory_trigger", "init_state")
     graph.add_edge("init_state", "react_reason")
     
-    # 3. 条件路由：react_reason → 各分支
+    # 第二阶段：React 循环推理
     graph.add_conditional_edges(
         "react_reason",
         route_by_reasoning,
         {
-            # 检索分支 → 检索后回到推理
             "rag_retrieve": "rag_retrieve",
-
-            # 联网搜索分支
             "web_search": "web_search",
-
-            # 子图分支 → 子图后回到推理
             "contact_subgraph": "contact_subgraph",
             "dictionary_subgraph": "dictionary_subgraph",
             "news_analysis_subgraph": "news_analysis_subgraph",
-
-            # 错误处理分支
             "handle_error": "handle_error",
-
-            # LLM 调用分支 → 直接输出给用户
             "llm_call": "llm_call"
         }
     )
-
-    # 4. 循环边：检索/搜索/子图/错误处理后 → 回到推理
+    
+    # 循环边：检索/搜索/子图/错误处理后 → 回到推理
     graph.add_edge("rag_retrieve", "react_reason")
     graph.add_edge("web_search", "react_reason")
     graph.add_edge("contact_subgraph", "react_reason")
@@ -189,10 +271,27 @@ def build_react_main_graph(llm=None, tools=None) -> StateGraph:
     graph.add_edge("news_analysis_subgraph", "react_reason")
     graph.add_edge("handle_error", "react_reason")
     
-    # 5. 条件路由：llm_call 后检查是否有工具调用
-    # 注意：这里简化处理，先直接 END，后续再完善工具调用循环
+    # 第三阶段：llm_call 后进入完成处理
     if llm_node is not None:
-        graph.add_edge("llm_call", END)
+        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("✅ [图构建] 整合后的完整主图构建完成")
     
     return graph
 
@@ -209,5 +308,6 @@ def build_main_graph() -> StateGraph:
 __all__ = [
     "build_react_main_graph",
     "build_main_graph",
-    "wrap_subgraph_for_error_handling"
+    "wrap_subgraph_for_error_handling",
+    "set_global_mem0_client"
 ]