Adriano
dbdbb77daf
Struttura monorepo completa con server FastAPI e client Flask: - Server: FastAPI + SQLAlchemy 2.0 async + Alembic migrations - Client: Flask + blueprints (auth, measure, maker, statistics) - Database: docker-compose MySQL 8.0 + Alembic async config - Config: pydantic-settings, TailwindCSS, Flask-Babel i18n - Piano implementazione completo (18 sezioni, 1600 righe) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
52 lines
1.2 KiB
Python
52 lines
1.2 KiB
Python
"""Async SQLAlchemy database engine and session management."""
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from collections.abc import AsyncGenerator
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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 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=False,
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pool_size=10,
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max_overflow=20,
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pool_recycle=3600,
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)
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# Session factory
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async_session_factory = 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 SQLAlchemy models."""
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pass
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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"""Dependency for FastAPI - yields an async database session."""
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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() -> None:
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"""Create all tables (dev only - use Alembic in production)."""
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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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