50 lines
1.1 KiB
Python
Executable file
50 lines
1.1 KiB
Python
Executable file
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase
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from app.config import settings
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class Base(DeclarativeBase):
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"""Base class for all SQLAlchemy models."""
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pass
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# Create async engine
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engine = create_async_engine(
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settings.DATABASE_URL,
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echo=False,
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pool_pre_ping=True,
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pool_size=5,
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max_overflow=10,
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)
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# Create async session factory
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async_session_factory = 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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async def get_db() -> AsyncSession:
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"""FastAPI dependency to get database session."""
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async with async_session_factory() 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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async def init_db() -> None:
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"""Initialize database tables."""
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async with engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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async def close_db() -> None:
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"""Close database connections."""
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await engine.dispose()
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