68 lines
1.7 KiB
Python
68 lines
1.7 KiB
Python
"""
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Database client for AI Service.
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[AC-AISVC-11] PostgreSQL database with SQLModel for multi-tenant data isolation.
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"""
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import logging
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from collections.abc import AsyncGenerator
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlmodel import SQLModel
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from app.core.config import get_settings
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from app.models import entities # noqa: F401 - Import to register all SQLModel tables
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logger = logging.getLogger(__name__)
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settings = get_settings()
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engine = create_async_engine(
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settings.database_url,
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pool_size=settings.database_pool_size,
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max_overflow=settings.database_max_overflow,
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echo=settings.debug,
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pool_pre_ping=True,
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)
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async_session_maker = 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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autocommit=False,
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autoflush=False,
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)
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async def init_db() -> None:
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"""
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[AC-AISVC-11] Initialize database tables.
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Creates all tables defined in SQLModel metadata.
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"""
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async with engine.begin() as conn:
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await conn.run_sync(SQLModel.metadata.create_all)
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logger.info("[AC-AISVC-11] Database tables initialized")
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async def close_db() -> None:
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"""
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Close database connections.
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"""
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await engine.dispose()
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logger.info("Database connections closed")
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async def get_session() -> AsyncGenerator[AsyncSession, None]:
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"""
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[AC-AISVC-11] Dependency injection for database session.
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Ensures proper session lifecycle management.
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"""
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async with async_session_maker() 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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