49 lines
1.3 KiB
Python
49 lines
1.3 KiB
Python
"""Database configuration and connection management."""
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from typing import AsyncGenerator
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from sqlalchemy import create_engine, MetaData
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from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
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from sqlalchemy.orm import DeclarativeBase, sessionmaker, Session
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from app.core.config import settings
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class Base(DeclarativeBase):
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"""Base class for SQLAlchemy models."""
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metadata = MetaData()
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# Database URL construction
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DATABASE_URL = f"oracle+oracledb://{settings.oracle_user}:{settings.oracle_password}@{settings.oracle_dsn}"
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# Synchronous engine for Oracle
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engine = create_engine(
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DATABASE_URL,
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echo=settings.debug,
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pool_pre_ping=True,
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pool_recycle=3600,
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)
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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def get_db() -> AsyncGenerator[Session, None]:
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"""Dependency to get database session."""
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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class DatabaseService:
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"""Database service for health checks and utilities."""
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@staticmethod
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def health_check() -> bool:
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"""Check database connectivity."""
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try:
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with SessionLocal() as db:
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db.execute("SELECT 1 FROM DUAL") # type:ignore[call-overload]
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return True
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except Exception:
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return False
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