Fase 2

worker/app/database.py

@@ -0,0 +1,35 @@
+"""
+Connessione database per il worker – usa SQLAlchemy async (stesso stack del backend).
+"""
+
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+from sqlalchemy.orm import DeclarativeBase
+
+from app.config import get_settings
+
+settings = get_settings()
+
+engine = create_async_engine(
+    settings.database_url,
+    echo=False,
+    pool_size=5,
+    max_overflow=10,
+    pool_pre_ping=True,
+)
+
+AsyncSessionLocal = async_sessionmaker(
+    engine,
+    class_=AsyncSession,
+    expire_on_commit=False,
+    autoflush=False,
+    autocommit=False,
+)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+async def get_db_session() -> AsyncSession:
+    """Restituisce una nuova sessione DB – da usare come context manager."""
+    return AsyncSessionLocal()