37 lines
900 B
Python
37 lines
900 B
Python
"""Database connection and session management."""
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from collections.abc import AsyncGenerator
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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 get_settings
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settings = get_settings()
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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_size=20,
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max_overflow=10,
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)
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async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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class Base(DeclarativeBase):
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"""SQLAlchemy declarative base."""
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pass
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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"""Dependency for getting async database sessions."""
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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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