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import os
import logging
from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
from sqlalchemy.orm import declarative_base
from sqlalchemy.exc import SQLAlchemyError
from dotenv import load_dotenv
# Setup logger
logger = logging.getLogger("app.database")
logger.setLevel(logging.INFO)
# Load .env variables
load_dotenv()
# Ensure your DATABASE_URL is in correct asyncpg format
DATABASE_URL = os.getenv("DATABASE_URL")
if not DATABASE_URL:
logger.warning("DATABASE_URL not found in environment. Using default SQLite for development.")
DATABASE_URL = "sqlite+aiosqlite:///./dubsway_dev.db"
# Create the async engine with better configuration
engine = create_async_engine(
DATABASE_URL,
echo=False, # Set to True for debugging
future=True,
pool_pre_ping=True, # Verify connections before use
pool_recycle=3600, # Recycle connections every hour
pool_size=10, # Connection pool size
max_overflow=20 # Max overflow connections
)
# Session factory using async_sessionmaker (recommended for SQLAlchemy 2.0+)
AsyncSessionLocal = async_sessionmaker(
bind=engine,
class_=AsyncSession,
expire_on_commit=False,
autocommit=False,
autoflush=False
)
# Base class for models
Base = declarative_base()
# Dependency for routes to get the async session
async def get_db():
"""Dependency to get database session for FastAPI routes"""
async with AsyncSessionLocal() as session:
try:
yield session
except SQLAlchemyError as e:
logger.error(f"Database error: {e}")
await session.rollback()
raise
finally:
await session.close()
async def init_db():
"""Initialize database tables"""
try:
async with engine.begin() as conn:
await conn.run_sync(Base.metadata.create_all)
logger.info("✅ Database tables created successfully")
except Exception as e:
logger.error(f"❌ Failed to initialize database: {e}")
raise
async def close_db():
"""Close database connections"""
try:
await engine.dispose()
logger.info("✅ Database connections closed")
except Exception as e:
logger.error(f"❌ Error closing database: {e}")
raise
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