chihlasm
60334cde93
Prevents InFailedSQLTransaction cascade — when a request fails mid- transaction, the connection is rolled back before being returned to the pool, so subsequent requests on the same connection don't inherit a poisoned transaction state. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
41 lines
968 B
Python
41 lines
968 B
Python
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 .config import settings
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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=settings.DEBUG,
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future=True
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)
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# Create async session factory
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async_session_maker = 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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class Base(DeclarativeBase):
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"""Base class for all database models."""
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pass
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async def get_db() -> AsyncSession:
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"""Dependency to get database session."""
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async with async_session_maker() 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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finally:
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await session.close()
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async def init_db():
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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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