42 lines
873 B
Python
42 lines
873 B
Python
"""
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数据库连接管理
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"""
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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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# 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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pool_pre_ping=True,
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pool_size=10,
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max_overflow=20,
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)
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# 创建异步会话工厂
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AsyncSessionLocal = sessionmaker(
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engine,
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class_=AsyncSession,
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expire_on_commit=False,
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autocommit=False,
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autoflush=False,
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)
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# 别名，用于脚本中使用
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async_session = AsyncSessionLocal
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# 创建基础模型类
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Base = declarative_base()
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async def get_db():
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"""
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获取数据库会话（依赖注入）
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"""
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async with AsyncSessionLocal() as session:
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try:
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yield session
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finally:
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await session.close()
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