add banbanmini backend

talkingq-url/services/database_service_base.py

@@ -0,0 +1,30 @@
+import asyncio
+from utils.logger import session_logger
+from database.connection import get_db_manager
+
+class DatabaseServiceBase:
+    """
+    数据库服务基类，提供通用的数据库初始化和会话管理功能
+    所有需要访问数据库的服务类都应该继承此基类
+    """
+    def __init__(self, service_name="unknown"):
+        self.db_manager = None
+        self._db_initialized = False
+        self.service_name = service_name
+        
+    async def _init_database(self):
+        """初始化数据库连接"""
+        if self._db_initialized:
+            return
+        try:
+            self.db_manager = await get_db_manager()
+            self._db_initialized = True
+            session_logger.info("system", self.service_name, f"{self.service_name}数据库连接初始化成功")
+        except Exception as e:
+            session_logger.error("system", self.service_name, f"{self.service_name}数据库连接初始化失败: {str(e)}")
+            raise
+            
+    async def get_session(self):
+        """获取数据库会话"""
+        await self._init_database()
+        return await self.db_manager.get_session()