fix 数据库会话管理

app/chain/__init__.py

@@ -7,6 +7,7 @@ from typing import Optional, Any, Tuple, List, Set, Union, Dict
 
 from qbittorrentapi import TorrentFilesList
 from ruamel.yaml import CommentedMap
+from sqlalchemy.orm import Session
 from transmission_rpc import File
 
 from app.core.config import settings
@@ -27,10 +28,11 @@ class ChainBase(metaclass=ABCMeta):
     处理链基类
     """
 
-    def __init__(self):
+    def __init__(self, db: Session = None):
         """
         公共初始化
         """
+        self._db = db
         self.modulemanager = ModuleManager()
         self.eventmanager = EventManager()