76 lines
1.8 KiB
Python
76 lines
1.8 KiB
Python
|
"""
|
|||
|
|
数据库连接和会话管理
|
|||
|
|
"""
|
|||
|
|
from sqlalchemy import create_engine, event
|
|||
|
|
from sqlalchemy.orm import sessionmaker
|
|||
|
|
from sqlalchemy.pool import QueuePool
|
|||
|
|
from .config import settings
|
|||
|
|
|
|||
|
|
# 创建数据库引擎，支持MySQL连接池
|
|||
|
|
db_settings = settings.database
|
|||
|
|
|
|||
|
|
if "sqlite" in db_settings.DATABASE_URL:
|
|||
|
|
# SQLite 配置
|
|||
|
|
engine = create_engine(
|
|||
|
|
db_settings.DATABASE_URL,
|
|||
|
|
echo=False,
|
|||
|
|
future=True,
|
|||
|
|
connect_args={"check_same_thread": False} # SQLite 特定配置
|
|||
|
|
)
|
|||
|
|
else:
|
|||
|
|
# MySQL 配置
|
|||
|
|
engine = create_engine(
|
|||
|
|
db_settings.DATABASE_URL,
|
|||
|
|
# 连接池配置
|
|||
|
|
poolclass=QueuePool,
|
|||
|
|
pool_size=db_settings.DB_POOL_SIZE,
|
|||
|
|
max_overflow=db_settings.DB_MAX_OVERFLOW,
|
|||
|
|
pool_timeout=db_settings.DB_POOL_TIMEOUT,
|
|||
|
|
pool_recycle=db_settings.DB_POOL_RECYCLE,
|
|||
|
|
echo=False,
|
|||
|
|
future=True,
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
# 如果是MySQL，启用严格模式
|
|||
|
|
if "mysql" in db_settings.DATABASE_URL:
|
|||
|
|
@event.listens_for(engine, "connect")
|
|||
|
|
def set_sqlite_pragma(dbapi_connection, connection_record):
|
|||
|
|
"""
|
|||
|
|
为MySQL连接设置参数（如果使用MySQL）
|
|||
|
|
注意：不再设置时区，使用服务器本地时间以保持一致性
|
|||
|
|
"""
|
|||
|
|
pass
|
|||
|
|
|
|||
|
|
|
|||
|
|
# 创建会话
|
|||
|
|
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def get_db():
|
|||
|
|
"""
|
|||
|
|
获取数据库会话
|
|||
|
|
"""
|
|||
|
|
db = SessionLocal()
|
|||
|
|
try:
|
|||
|
|
yield db
|
|||
|
|
finally:
|
|||
|
|
db.close()
|
|||
|
|
|
|||
|
|
|
|||
|
|
def create_tables():
|
|||
|
|
"""
|
|||
|
|
创建所有表
|
|||
|
|
"""
|
|||
|
|
from ..models.base import Base
|
|||
|
|
from ..models import user, game
|
|||
|
|
Base.metadata.create_all(bind=engine)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def drop_tables():
|
|||
|
|
"""
|
|||
|
|
删除所有表（仅用于开发环境）
|
|||
|
|
"""
|
|||
|
|
from ..models.base import Base
|
|||
|
|
from ..models import user, game
|
|||
|
|
Base.metadata.drop_all(bind=engine)
|