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582520a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | """Async database session helpers."""
from collections.abc import AsyncGenerator
from sqlalchemy.ext.asyncio import (
AsyncSession,
async_sessionmaker,
create_async_engine,
)
from app.config import get_settings
from app.models import Base
settings = get_settings()
engine = create_async_engine(
settings.database_url,
echo=False,
)
SessionLocal = async_sessionmaker(
engine,
expire_on_commit=False,
class_=AsyncSession,
)
async def init_db() -> None:
"""Create tables if they do not exist."""
async with engine.begin() as conn:
await conn.run_sync(Base.metadata.create_all)
async def get_db() -> AsyncGenerator[AsyncSession, None]:
"""Yield a database session."""
async with SessionLocal() as session:
yield session
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