acf2757384
- Update database path configuration for better compatibility - Add comprehensive logging system with error handling - Create supervisord.conf with proper configuration - Add environment variable example file - Enhance health check endpoint to report database status - Add detailed startup and shutdown event handlers - Update documentation with troubleshooting information - Update requirements with additional helpful packages
54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
from sqlalchemy import create_engine, event
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from sqlalchemy.orm import sessionmaker
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from sqlalchemy.exc import SQLAlchemyError
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from app.core.config import settings
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from app.core.logging import get_logger
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logger = get_logger("db.session")
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# Create engine with better error handling
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try:
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logger.info(f"Creating database engine with URL: {settings.SQLALCHEMY_DATABASE_URL}")
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engine = create_engine(
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settings.SQLALCHEMY_DATABASE_URL,
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connect_args={"check_same_thread": False},
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pool_pre_ping=True, # Ensure connections are still alive
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)
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# Add engine event listeners for debugging
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@event.listens_for(engine, "connect")
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def on_connect(dbapi_connection, connection_record):
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logger.info("Database connection established")
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@event.listens_for(engine, "engine_connect")
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def on_engine_connect(connection):
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logger.info("Engine connected")
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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# Test connection on startup
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with engine.connect() as conn:
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logger.info("Database connection test successful")
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except SQLAlchemyError as e:
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logger.error(f"Database connection error: {e}", exc_info=True)
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# Don't re-raise to allow fallback mechanisms
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SessionLocal = None
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# Dependency to get DB session
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def get_db():
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if not SessionLocal:
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logger.error("Database session not initialized")
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raise SQLAlchemyError("Database connection failed")
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db = SessionLocal()
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try:
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logger.debug("DB session created")
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yield db
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except SQLAlchemyError as e:
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logger.error(f"Database error during session: {e}")
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raise
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finally:
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logger.debug("DB session closed")
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db.close() |