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4b4aca642a
- Alembic async migrations: users, conversations, messages, is_favorited - FastAPI auth service: Google + GitHub OAuth, RS256 JWT, refresh cookie - /auth/me, /auth/refresh, /auth/validate (service-to-service) - rate limiting 10/min on OAuth routes, CORS locked to FRONTEND_URL Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
"""Async SQLAlchemy engine + session factory."""
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from __future__ import annotations
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from collections.abc import AsyncIterator
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase
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from .config import get_settings
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class Base(DeclarativeBase):
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"""Shared declarative base for all ORM models."""
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_engine = None
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_session_factory: async_sessionmaker[AsyncSession] | None = None
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def _build_engine():
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global _engine, _session_factory
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settings = get_settings()
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_engine = create_async_engine(settings.database_url, pool_pre_ping=True)
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_session_factory = async_sessionmaker(_engine, expire_on_commit=False)
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def get_engine():
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if _engine is None:
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_build_engine()
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return _engine
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def get_session_factory() -> async_sessionmaker[AsyncSession]:
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if _session_factory is None:
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_build_engine()
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assert _session_factory is not None
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return _session_factory
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async def get_session() -> AsyncIterator[AsyncSession]:
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factory = get_session_factory()
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async with factory() as session:
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yield session
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def override_session_factory(factory: async_sessionmaker[AsyncSession]) -> None:
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"""Testing hook: swap the session factory for an in-memory engine."""
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global _session_factory
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_session_factory = factory
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