40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
# core/database.py
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from sqlalchemy import create_engine
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from sqlalchemy.orm import sessionmaker, Session, declarative_base
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from typing import Generator
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from core.config import settings
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Base = declarative_base() # Used for models
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_engine = None
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_SessionLocal = None
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def get_engine():
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global _engine
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if _engine is None:
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if not settings.DB_URL:
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raise ValueError("DB_URL is not set in Settings.")
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print(f"Connecting to database at {settings.DB_URL}")
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_engine = create_engine(settings.DB_URL)
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try:
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_engine.connect()
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except Exception:
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raise Exception("Database connection failed. Is the database server running?")
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Base.metadata.create_all(_engine) # Create tables here
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return _engine
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def get_sessionmaker():
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global _SessionLocal
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if _SessionLocal is None:
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engine = get_engine()
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_SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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return _SessionLocal
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def get_db() -> Generator[Session, None, None]:
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SessionLocal = get_sessionmaker()
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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() |