d30b22b50c
- FastAPI + Python 3.12 backend - Meta WhatsApp Business API client (official) - OpenAI GPT-4o with function calling - RAG vector store with pgvector - ERPNext Frappe REST client - Celery + Redis async task queue - PostgreSQL with migrations (Alembic) - Docker Compose full stack - Enterprise logging, metrics, health checks
63 lines
1.5 KiB
Python
63 lines
1.5 KiB
Python
"""Database configuration with async SQLAlchemy + pgvector."""
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from typing import AsyncGenerator
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import declarative_base
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from sqlalchemy.pool import NullPool
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from src.config import settings
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# Base class for SQLModel/SQLAlchemy models
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Base = declarative_base()
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# Engine configuration
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engine_kwargs = {
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"pool_size": settings.DATABASE_POOL_SIZE,
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"max_overflow": settings.DATABASE_MAX_OVERFLOW,
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"pool_pre_ping": True,
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"pool_recycle": 300,
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"echo": settings.DEBUG,
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}
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if settings.APP_ENV == "testing":
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engine_kwargs["poolclass"] = NullPool
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engine = create_async_engine(
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settings.database_url_str,
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**engine_kwargs,
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)
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# Session factory
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AsyncSessionLocal = 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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autoflush=False,
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autocommit=False,
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)
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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"""Yield an async database session for dependency injection."""
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async with AsyncSessionLocal() 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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"""Initialize database tables (for dev/testing only)."""
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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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async def close_db() -> None:
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"""Dispose database engine."""
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await engine.dispose()
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