弃用langgrpah更换deepagent

src/db/init_mongodb.py

@@ -0,0 +1,49 @@
+import asyncio
+from motor.motor_asyncio import AsyncIOMotorClient
+
+from src.core.config import MONGO_URI
+
+DB_NAME = "fida_mongo"
+COLLECTION_NAME = "user_persona"
+
+
+async def init_mongo():
+    client = AsyncIOMotorClient(
+        MONGO_URI,
+        maxPoolSize=50,
+        minPoolSize=5,
+        serverSelectionTimeoutMS=5000
+    )
+
+    db = client[DB_NAME]
+
+    # 查看已有集合
+    collections = await db.list_collection_names()
+
+    if COLLECTION_NAME not in collections:
+        print(f"Creating collection: {COLLECTION_NAME}")
+        await db.create_collection(COLLECTION_NAME)
+
+    collection = db[COLLECTION_NAME]
+
+    # 创建 thread_id 唯一索引
+    print("Creating index: thread_id_unique")
+    await collection.create_index(
+        "thread_id",
+        unique=True,
+        name="thread_id_unique"
+    )
+
+    # 创建 TTL 索引（30天自动删除）
+    print("Creating TTL index: updated_at_ttl")
+    await collection.create_index(
+        "updated_at",
+        expireAfterSeconds=2592000,  # 30天
+        name="updated_at_ttl"
+    )
+
+    print("MongoDB initialization completed.")
+
+
+if __name__ == "__main__":
+    asyncio.run(init_mongo())

src/db/mongo.py

@@ -0,0 +1,17 @@
+from motor.motor_asyncio import AsyncIOMotorClient
+
+from src.core.config import MONGO_URI
+
+client = AsyncIOMotorClient(
+    MONGO_URI,
+    maxPoolSize=50,
+    minPoolSize=5,
+    serverSelectionTimeoutMS=5000
+)
+
+db = client["fida_mongo"]
+
+user_persona_collection = db["user_persona"]
+
+
+