feat：添加海马体支持

src/chat/memory_system/Hippocampus.py

@@ -4,6 +4,7 @@ import math
 import random
 import time
 import re
+import json
 from itertools import combinations
 
 import jieba
@@ -22,7 +23,7 @@ from ..utils.utils import translate_timestamp_to_human_readable
 from rich.traceback import install
 
 from ...config.config import global_config
-from src.common.database.database_model import Messages  # Peewee Messages 模型导入
+from src.common.database.database_model import Messages, GraphNodes, GraphEdges  # Peewee Models导入
 
 install(extra_lines=3)
 
@@ -877,12 +878,9 @@ class EntorhinalCortex:
     async def sync_memory_to_db(self):
         """将记忆图同步到数据库"""
         # 获取数据库中所有节点和内存中所有节点
-        db_nodes = list(db.graph_data.nodes.find())
+        db_nodes = {node.concept: node for node in GraphNodes.select()}
         memory_nodes = list(self.memory_graph.G.nodes(data=True))
 
-        # 转换数据库节点为字典格式,方便查找
-        db_nodes_dict = {node["concept"]: node for node in db_nodes}
-
         # 检查并更新节点
         for concept, data in memory_nodes:
             memory_items = data.get("memory_items", [])
@@ -896,44 +894,39 @@ class EntorhinalCortex:
             created_time = data.get("created_time", datetime.datetime.now().timestamp())
             last_modified = data.get("last_modified", datetime.datetime.now().timestamp())
 
-            if concept not in db_nodes_dict:
+            # 将memory_items转换为JSON字符串
+            memory_items_json = json.dumps(memory_items, ensure_ascii=False)
+
+            if concept not in db_nodes:
                 # 数据库中缺少的节点,添加
-                node_data = {
+                GraphNodes.create(
-                    "concept": concept,
+                    concept=concept,
-                    "memory_items": memory_items,
+                    memory_items=memory_items_json,
-                    "hash": memory_hash,
+                    hash=memory_hash,
-                    "created_time": created_time,
+                    created_time=created_time,
-                    "last_modified": last_modified,
+                    last_modified=last_modified,
-                }
+                )
-                db.graph_data.nodes.insert_one(node_data)
             else:
                 # 获取数据库中节点的特征值
-                db_node = db_nodes_dict[concept]
+                db_node = db_nodes[concept]
-                db_hash = db_node.get("hash", None)
+                db_hash = db_node.hash
 
                 # 如果特征值不同,则更新节点
                 if db_hash != memory_hash:
-                    db.graph_data.nodes.update_one(
+                    db_node.memory_items = memory_items_json
-                        {"concept": concept},
+                    db_node.hash = memory_hash
-                        {
+                    db_node.last_modified = last_modified
-                            "$set": {
+                    db_node.save()
-                                "memory_items": memory_items,
-                                "hash": memory_hash,
-                                "created_time": created_time,
-                                "last_modified": last_modified,
-                            }
-                        },
-                    ).execute()
 
         # 处理边的信息
-        db_edges = list(db.graph_data.edges.find())
+        db_edges = list(GraphEdges.select())
         memory_edges = list(self.memory_graph.G.edges(data=True))
 
         # 创建边的哈希值字典
         db_edge_dict = {}
         for edge in db_edges:
-            edge_hash = self.hippocampus.calculate_edge_hash(edge["source"], edge["target"])
+            edge_hash = self.hippocampus.calculate_edge_hash(edge.source, edge.target)
-            db_edge_dict[(edge["source"], edge["target"])] = {"hash": edge_hash, "strength": edge.get("strength", 1)}
+            db_edge_dict[(edge.source, edge.target)] = {"hash": edge_hash, "strength": edge.strength}
 
         # 检查并更新边
         for source, target, data in memory_edges:
@@ -947,29 +940,22 @@ class EntorhinalCortex:
 
             if edge_key not in db_edge_dict:
                 # 添加新边
-                edge_data = {
+                GraphEdges.create(
-                    "source": source,
+                    source=source,
-                    "target": target,
+                    target=target,
-                    "strength": strength,
+                    strength=strength,
-                    "hash": edge_hash,
+                    hash=edge_hash,
-                    "created_time": created_time,
+                    created_time=created_time,
-                    "last_modified": last_modified,
+                    last_modified=last_modified,
-                }
+                )
-                db.graph_data.edges.insert_one(edge_data)
             else:
                 # 检查边的特征值是否变化
                 if db_edge_dict[edge_key]["hash"] != edge_hash:
-                    db.graph_data.edges.update_one(
+                    edge = GraphEdges.get(GraphEdges.source == source, GraphEdges.target == target)
-                        {"source": source, "target": target},
+                    edge.hash = edge_hash
-                        {
+                    edge.strength = strength
-                            "$set": {
+                    edge.last_modified = last_modified
-                                "hash": edge_hash,
+                    edge.save()
-                                "strength": strength,
-                                "created_time": created_time,
-                                "last_modified": last_modified,
-                            }
-                        },
-                    ).execute()
 
     def sync_memory_from_db(self):
         """从数据库同步数据到内存中的图结构"""
@@ -980,29 +966,31 @@ class EntorhinalCortex:
         self.memory_graph.G.clear()
 
         # 从数据库加载所有节点
-        nodes = list(db.graph_data.nodes.find())
+        nodes = list(GraphNodes.select())
         for node in nodes:
-            concept = node["concept"]
+            concept = node.concept
-            memory_items = node.get("memory_items", [])
+            memory_items = json.loads(node.memory_items)
             if not isinstance(memory_items, list):
                 memory_items = [memory_items] if memory_items else []
 
             # 检查时间字段是否存在
-            if "created_time" not in node or "last_modified" not in node:
+            if not node.created_time or not node.last_modified:
                 need_update = True
                 # 更新数据库中的节点
                 update_data = {}
-                if "created_time" not in node:
+                if not node.created_time:
                     update_data["created_time"] = current_time
-                if "last_modified" not in node:
+                if not node.last_modified:
                     update_data["last_modified"] = current_time
 
-                db.graph_data.nodes.update_one({"concept": concept}, {"$set": update_data}).execute()
+                GraphNodes.update(
+                    **update_data
+                ).where(GraphNodes.concept == concept).execute()
                 logger.info(f"[时间更新] 节点 {concept} 添加缺失的时间字段")
 
             # 获取时间信息(如果不存在则使用当前时间)
-            created_time = node.get("created_time", current_time)
+            created_time = node.created_time or current_time
-            last_modified = node.get("last_modified", current_time)
+            last_modified = node.last_modified or current_time
 
             # 添加节点到图中
             self.memory_graph.G.add_node(
@@ -1010,28 +998,32 @@ class EntorhinalCortex:
             )
 
         # 从数据库加载所有边
-        edges = list(db.graph_data.edges.find())
+        edges = list(GraphEdges.select())
         for edge in edges:
-            source = edge["source"]
+            source = edge.source
-            target = edge["target"]
+            target = edge.target
-            strength = edge.get("strength", 1)
+            strength = edge.strength
 
             # 检查时间字段是否存在
-            if "created_time" not in edge or "last_modified" not in edge:
+            if not edge.created_time or not edge.last_modified:
                 need_update = True
                 # 更新数据库中的边
                 update_data = {}
-                if "created_time" not in edge:
+                if not edge.created_time:
                     update_data["created_time"] = current_time
-                if "last_modified" not in edge:
+                if not edge.last_modified:
                     update_data["last_modified"] = current_time
 
-                db.graph_data.edges.update_one({"source": source, "target": target}, {"$set": update_data}).execute()
+                GraphEdges.update(
+                    **update_data
+                ).where(
+                    (GraphEdges.source == source) & (GraphEdges.target == target)
+                ).execute()
                 logger.info(f"[时间更新] 边 {source} - {target} 添加缺失的时间字段")
 
             # 获取时间信息(如果不存在则使用当前时间)
-            created_time = edge.get("created_time", current_time)
+            created_time = edge.created_time or current_time
-            last_modified = edge.get("last_modified", current_time)
+            last_modified = edge.last_modified or current_time
 
             # 只有当源节点和目标节点都存在时才添加边
             if source in self.memory_graph.G and target in self.memory_graph.G:
@@ -1049,8 +1041,8 @@ class EntorhinalCortex:
 
         # 清空数据库
         clear_start = time.time()
-        db.graph_data.nodes.delete_many({})
+        GraphNodes.delete().execute()
-        db.graph_data.edges.delete_many({})
+        GraphEdges.delete().execute()
         clear_end = time.time()
         logger.info(f"[数据库] 清空数据库耗时: {clear_end - clear_start:.2f}秒")
 
@@ -1065,29 +1057,27 @@ class EntorhinalCortex:
             if not isinstance(memory_items, list):
                 memory_items = [memory_items] if memory_items else []
 
-            node_data = {
+            GraphNodes.create(
-                "concept": concept,
+                concept=concept,
-                "memory_items": memory_items,
+                memory_items=json.dumps(memory_items),
-                "hash": self.hippocampus.calculate_node_hash(concept, memory_items),
+                hash=self.hippocampus.calculate_node_hash(concept, memory_items),
-                "created_time": data.get("created_time", datetime.datetime.now().timestamp()),
+                created_time=data.get("created_time", datetime.datetime.now().timestamp()),
-                "last_modified": data.get("last_modified", datetime.datetime.now().timestamp()),
+                last_modified=data.get("last_modified", datetime.datetime.now().timestamp()),
-            }
+            )
-            db.graph_data.nodes.insert_one(node_data)
         node_end = time.time()
         logger.info(f"[数据库] 写入 {len(memory_nodes)} 个节点耗时: {node_end - node_start:.2f}秒")
 
         # 重新写入边
         edge_start = time.time()
         for source, target, data in memory_edges:
-            edge_data = {
+            GraphEdges.create(
-                "source": source,
+                source=source,
-                "target": target,
+                target=target,
-                "strength": data.get("strength", 1),
+                strength=data.get("strength", 1),
-                "hash": self.hippocampus.calculate_edge_hash(source, target),
+                hash=self.hippocampus.calculate_edge_hash(source, target),
-                "created_time": data.get("created_time", datetime.datetime.now().timestamp()),
+                created_time=data.get("created_time", datetime.datetime.now().timestamp()),
-                "last_modified": data.get("last_modified", datetime.datetime.now().timestamp()),
+                last_modified=data.get("last_modified", datetime.datetime.now().timestamp()),
-            }
+            )
-            db.graph_data.edges.insert_one(edge_data)
         edge_end = time.time()
         logger.info(f"[数据库] 写入 {len(memory_edges)} 条边耗时: {edge_end - edge_start:.2f}秒")
 

src/common/database/database_model.py

@@ -275,6 +275,35 @@ class RecalledMessages(BaseModel):
         table_name = "recalled_messages"
 
 
+class GraphNodes(BaseModel):
+    """
+    用于存储记忆图节点的模型
+    """
+    concept = TextField(unique=True, index=True)  # 节点概念
+    memory_items = TextField()  # JSON格式存储的记忆列表
+    hash = TextField()  # 节点哈希值
+    created_time = FloatField()  # 创建时间戳
+    last_modified = FloatField()  # 最后修改时间戳
+
+    class Meta:
+        table_name = "graph_nodes"
+
+
+class GraphEdges(BaseModel):
+    """
+    用于存储记忆图边的模型
+    """
+    source = TextField(index=True)  # 源节点
+    target = TextField(index=True)  # 目标节点
+    strength = IntegerField()  # 连接强度
+    hash = TextField()  # 边哈希值
+    created_time = FloatField()  # 创建时间戳
+    last_modified = FloatField()  # 最后修改时间戳
+
+    class Meta:
+        table_name = "graph_edges"
+
+
 def create_tables():
     """
     创建所有在模型中定义的数据库表。
@@ -293,6 +322,8 @@ def create_tables():
                 Knowledges,
                 ThinkingLog,
                 RecalledMessages,  # 添加新模型
+                GraphNodes,  # 添加图节点表
+                GraphEdges,  # 添加图边表
             ]
         )
 
@@ -315,7 +346,9 @@ def initialize_database():
         PersonInfo,
         Knowledges,
         ThinkingLog,
-        RecalledMessages,  # 添加新模型
+        RecalledMessages,
+        GraphNodes,  # 添加图节点表
+        GraphEdges,  # 添加图边表
     ]
 
     needs_creation = False