32 lines
1.2 KiB
Python
32 lines
1.2 KiB
Python
from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
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from sqlalchemy.orm import sessionmaker, declarative_base
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from app.core.config import settings
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engine = create_async_engine(
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f"mysql+aiomysql://{settings.DB_USER}:{settings.DB_PASSWORD}@{settings.DB_HOST}:{settings.DB_PORT}/{settings.DB_NAME}",
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pool_size=settings.DB_POOL_SIZE, # 连接池常驻连接数
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max_overflow=settings.DB_MAX_OVERFLOW, # 池最大溢出连接数
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pool_timeout=settings.DB_POOL_TIMEOUT, # 获取连接超时时间（秒）
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pool_recycle=settings.DB_POOL_RECYCLE, # 连接回收间隔（秒）
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echo=False # 关闭SQL日志输出
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)
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# expire_on_commit=False 禁用提交后过期对象 --> 提交后原对象仍然可以使用.
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async_session = sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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# ORM模型基类
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Base = declarative_base()
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# 获取数据库会话
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async def get_db():
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async with async_session() as session:
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try:
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yield session
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await session.commit()
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except Exception:
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await session.rollback()
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raise
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finally:
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await session.close() |