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from app import settings as config
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
DATABASE_USERNAME = config.DATABASE_USERNAME
DATABASE_PASSWORD = config.DATABASE_PASSWORD
DATABASE_HOST = config.DATABASE_HOST
DATABASE_NAME = config.DATABASE_NAME
SQLALCHEMY_DATABASE_URL = f"postgresql://{DATABASE_USERNAME}:{DATABASE_PASSWORD}@{DATABASE_HOST}/{DATABASE_NAME}"
engine = create_engine(SQLALCHEMY_DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()
def get_db():
"""
Provides a database session for dependency injection.
This function is used to obtain a new database session instance from the
`SessionLocal` factory. It is intended to be used with dependency injection
in FastAPI to manage database sessions.
Yields:
Session: A SQLAlchemy database session.
Notes:
The session is automatically closed after use to ensure proper resource management.
"""
db = SessionLocal()
try:
yield db
finally:
db.close()
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