lauadminandClaude Sonnet 5
2664cb8213
- FastAPI + SQLAlchemy async + Alembic + Postgres backend - Auth: JWT access + rotating refresh tokens, argon2, roles, audit log - React 19 + Vite frontend: login page, protected route, auth context - Docker Compose: postgres, redis, migrate, api, worker (placeholder), frontend/nginx Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
"""Фабрика асинхронных сессий SQLAlchemy."""
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from __future__ import annotations
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from collections.abc import AsyncGenerator
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from contextlib import asynccontextmanager
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from app.core.config import settings
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engine = create_async_engine(
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settings.database_url,
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echo=False,
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pool_pre_ping=True, # VPS-соединения умеют отваливаться молча
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pool_size=10,
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max_overflow=20,
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)
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SessionFactory = async_sessionmaker(
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bind=engine,
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class_=AsyncSession,
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expire_on_commit=False, # объекты остаются пригодными после commit
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autoflush=False,
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)
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async def get_session() -> AsyncGenerator[AsyncSession, None]:
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"""Зависимость FastAPI. Откатывает транзакцию при любом исключении."""
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async with SessionFactory() 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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@asynccontextmanager
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async def session_scope() -> AsyncGenerator[AsyncSession, None]:
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"""Сессия для воркеров и CLI, где механизма зависимостей FastAPI нет."""
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async with SessionFactory() 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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