40 lines
977 B
Python
40 lines
977 B
Python
from collections.abc import AsyncIterator
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from sqlalchemy.ext.asyncio import (
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AsyncSession,
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async_sessionmaker,
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create_async_engine,
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)
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from sqlalchemy.orm import DeclarativeBase
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from sqlalchemy.pool import NullPool
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from app.config import settings
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class Base(DeclarativeBase):
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pass
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engine_options: dict[str, object] = {
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"pool_pre_ping": True,
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}
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if not settings.database_url.startswith("sqlite"):
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engine_options.update(
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pool_size=settings.database_pool_size,
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max_overflow=settings.database_max_overflow,
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)
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else:
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engine_options["poolclass"] = NullPool
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engine = create_async_engine(settings.database_url, **engine_options)
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SessionLocal = async_sessionmaker(engine, expire_on_commit=False, class_=AsyncSession)
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async def get_db() -> AsyncIterator[AsyncSession]:
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async with SessionLocal() as session:
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try:
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yield session
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except Exception:
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await session.rollback()
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raise
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