core/database.py

Async SQLAlchemy session factory and FastAPI dependency for database access.

# Source: https://github.com/OpenSalesClaw/OpenSalesClaw | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
# Provided via justclaw.it.com; keep this notice with the code.
from collections.abc import AsyncGenerator

from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine

from app.core.config import settings

engine = create_async_engine(
    settings.database_url,
    echo=False,
    pool_pre_ping=True,
)

AsyncSessionLocal = async_sessionmaker(
    bind=engine,
    class_=AsyncSession,
    expire_on_commit=False,
    autoflush=False,
    autocommit=False,
)


async def get_db() -> AsyncGenerator[AsyncSession, None]:
    """FastAPI dependency that provides an async database session."""
    async with AsyncSessionL

... (truncated -- full source via MCP)