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d2426db | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | """
Database connection and session management using SQLAlchemy.
"""
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from .config import settings
# Create database engine
engine = create_engine(
settings.DATABASE_URL,
pool_pre_ping=True, # Verify connections before using
echo=settings.DEBUG # Log SQL queries in debug mode
)
# Session factory
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
# Base class for models
Base = declarative_base()
def get_db():
"""
Dependency function to get database session.
Yields a session and ensures it's closed after use.
"""
db = SessionLocal()
try:
yield db
finally:
db.close()
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