39 lines
846 B
Python
39 lines
846 B
Python
"""
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数据库连接模块
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"""
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from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
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from sqlalchemy.orm import DeclarativeBase
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from app.core.config import settings
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# 创建异步引擎
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engine = create_async_engine(
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settings.DATABASE_URL,
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echo=settings.DEBUG,
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)
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# 创建异步会话工厂
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async_session_maker = async_sessionmaker(
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engine,
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class_=AsyncSession,
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expire_on_commit=False,
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)
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class Base(DeclarativeBase):
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"""数据库模型基类"""
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pass
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async def get_db() -> AsyncSession:
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"""获取数据库会话依赖"""
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async with async_session_maker() 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()
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