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https://gitverse.ru/kpa39l/md2vk.git
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estorozhenko
37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
"""База данных: async engine, сессии, инициализация."""
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from __future__ import annotations
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from pathlib import Path
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from app.config import settings
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# Создаём каталог для БД, если SQLite
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_db_path = settings.database_url.replace("sqlite+aiosqlite:///", "")
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if _db_path != settings.database_url:
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Path(_db_path).parent.mkdir(parents=True, exist_ok=True)
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engine = create_async_engine(settings.database_url, echo=False)
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async_session_factory = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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async def get_db() -> AsyncSession:
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"""FastAPI-зависимость: сессия БД."""
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async with async_session_factory() 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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finally:
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await session.close()
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async def init_db():
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"""Создаёт таблицы при старте."""
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from app.models import Base # noqa: F401 — импорт моделей для регистрации
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async with engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all) |