v6ole
38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
"""Database connections and session management."""
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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.config import settings
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# ── PostgreSQL ────────────────────────────────────────────────────
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engine = create_async_engine(settings.DATABASE_URL, echo=settings.DEBUG)
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async_session_factory = async_sessionmaker(engine, expire_on_commit=False)
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class Base(DeclarativeBase):
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pass
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async def get_db() -> AsyncSession:
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"""Yield a DB session per request."""
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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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"""Create all tables (use Alembic in production)."""
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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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await engine.dispose()
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