fix db session

app/db/models/__init__.py

@@ -1,45 +1,65 @@
+import threading
 from typing import Any, Self, List
 
 from sqlalchemy.orm import as_declarative, declared_attr, Session
 
+from app.db import ScopedSession
+
+# 数据库锁
+DBLock = threading.Lock()
+
+
+def db_persist(func):
+    """
+    数据库操作装饰器，获取第一个输入参数db，执行数据库操作后提交
+    """
+
+    def wrapper(*args, **kwargs):
+        with DBLock:
+            db: Session = kwargs.get("db") or args[1]
+            try:
+                if db:
+                    db.close()
+                db = ScopedSession()
+                result = func(*args, **kwargs)
+                db.commit()
+            except Exception as err:
+                db.rollback()
+                raise err
+            return result
+
+    return wrapper
+
 
 @as_declarative()
 class Base:
     id: Any
     __name__: str
 
-    @staticmethod
-    def commit(db: Session):
-        try:
-            db.commit()
-        except Exception as err:
-            db.rollback()
-            raise err
-
+    @db_persist
     def create(self, db: Session) -> Self:
         db.add(self)
-        self.commit(db)
         return self
 
     @classmethod
     def get(cls, db: Session, rid: int) -> Self:
         return db.query(cls).filter(cls.id == rid).first()
 
+    @db_persist
     def update(self, db: Session, payload: dict):
         payload = {k: v for k, v in payload.items() if v is not None}
         for key, value in payload.items():
             setattr(self, key, value)
-        Base.commit(db)
 
     @classmethod
+    @db_persist
     def delete(cls, db: Session, rid):
         db.query(cls).filter(cls.id == rid).delete()
-        Base.commit(db)
 
     @classmethod
+    @db_persist
     def truncate(cls, db: Session):
         db.query(cls).delete()
-        Base.commit(db)
 
     @classmethod
     def list(cls, db: Session) -> List[Self]:

app/db/models/downloadhistory.py

@@ -1,7 +1,7 @@
 from sqlalchemy import Column, Integer, String, Sequence
 from sqlalchemy.orm import Session
 
-from app.db.models import Base
+from app.db.models import Base, db_persist
 
 
 class DownloadHistory(Base):
@@ -148,6 +148,7 @@ class DownloadFiles(Base):
         return db.query(DownloadFiles).filter(DownloadFiles.savepath == savepath).all()
 
     @staticmethod
+    @db_persist
     def delete_by_fullpath(db: Session, fullpath: str):
         db.query(DownloadFiles).filter(DownloadFiles.fullpath == fullpath,
                                        DownloadFiles.state == 1).update(
@@ -155,4 +156,3 @@ class DownloadFiles(Base):
                 "state": 0
             }
         )
-        Base.commit(db)

app/db/models/mediaserver.py

@@ -3,7 +3,7 @@ from datetime import datetime
 from sqlalchemy import Column, Integer, String, Sequence
 from sqlalchemy.orm import Session
 
-from app.db.models import Base
+from app.db.models import Base, db_persist
 
 
 class MediaServerItem(Base):
@@ -45,9 +45,9 @@ class MediaServerItem(Base):
         return db.query(MediaServerItem).filter(MediaServerItem.item_id == item_id).first()
 
     @staticmethod
+    @db_persist
     def empty(db: Session, server: str):
         db.query(MediaServerItem).filter(MediaServerItem.server == server).delete()
-        Base.commit(db)
 
     @staticmethod
     def exist_by_tmdbid(db: Session, tmdbid: int, mtype: str):

app/db/models/plugin.py

@@ -1,7 +1,7 @@
 from sqlalchemy import Column, Integer, String, Sequence
 from sqlalchemy.orm import Session
 
-from app.db.models import Base
+from app.db.models import Base, db_persist
 
 
 class PluginData(Base):
@@ -22,9 +22,9 @@ class PluginData(Base):
         return db.query(PluginData).filter(PluginData.plugin_id == plugin_id, PluginData.key == key).first()
 
     @staticmethod
+    @db_persist
     def del_plugin_data_by_key(db: Session, plugin_id: str, key: str):
         db.query(PluginData).filter(PluginData.plugin_id == plugin_id, PluginData.key == key).delete()
-        Base.commit(db)
 
     @staticmethod
     def get_plugin_data_by_plugin_id(db: Session, plugin_id: str):

app/db/models/site.py

@@ -3,7 +3,7 @@ from datetime import datetime
 from sqlalchemy import Boolean, Column, Integer, String, Sequence
 from sqlalchemy.orm import Session
 
-from app.db.models import Base
+from app.db.models import Base, db_persist
 
 
 class Site(Base):
@@ -59,6 +59,6 @@ class Site(Base):
         return db.query(Site).order_by(Site.pri).all()
 
     @staticmethod
+    @db_persist
     def reset(db: Session):
         db.query(Site).delete()
-        Base.commit(db)

app/db/models/transferhistory.py

@@ -3,7 +3,7 @@ import time
 from sqlalchemy import Column, Integer, String, Sequence, Boolean, func
 from sqlalchemy.orm import Session
 
-from app.db.models import Base
+from app.db.models import Base, db_persist
 
 
 class TransferHistory(Base):
@@ -154,10 +154,10 @@ class TransferHistory(Base):
                                                 TransferHistory.type == mtype).first()
 
     @staticmethod
+    @db_persist
     def update_download_hash(db: Session, historyid: int = None, download_hash: str = None):
         db.query(TransferHistory).filter(TransferHistory.id == historyid).update(
             {
                 "download_hash": download_hash
             }
         )
-        Base.commit(db)