giga_tcg/db/database.py

101 lines
3.3 KiB
Python

from sqlalchemy import create_engine, text
from sqlalchemy.orm import sessionmaker, Session
from contextlib import contextmanager
from typing import Generator
import os
from sqlalchemy import inspect
from services.tcgplayer import TCGPlayerService
#from services.pricing import PricingService
from services.file import FileService
import logging
logger = logging.getLogger(__name__)
# Get database URL from environment variable with fallback
DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///omegacard.db")
# Create engine with proper configuration
engine = create_engine(
DATABASE_URL,
pool_pre_ping=True, # Enable connection health checks
pool_size=5, # Set reasonable pool size
max_overflow=10 # Allow some overflow connections
)
# Create session factory
SessionLocal = sessionmaker(
bind=engine,
autocommit=False,
autoflush=False
)
@contextmanager
def get_db_session() -> Generator[Session, None, None]:
"""Context manager for database sessions"""
session = SessionLocal()
try:
yield session
except Exception as e:
logger.error(f"Database session error: {str(e)}")
session.rollback()
raise
finally:
session.close()
def get_db() -> Generator[Session, None, None]:
"""Dependency for FastAPI to get database sessions"""
with get_db_session() as session:
yield session
def init_db() -> None:
"""Initialize database tables and run first-time setup if needed"""
from .models import Base
try:
inspector = inspect(engine)
tables_exist = all(
table in inspector.get_table_names()
for table in Base.metadata.tables.keys()
)
# if tables_exist:
# drop all tables except file
# for table in inspector.get_table_names():
# if table != 'files':
# Base.metadata.drop_all(bind=engine, tables=[Base.metadata.tables[table]])
# logger.info(f"Dropped table: {table}")
# Create tables if they don't exist
Base.metadata.create_all(bind=engine)
# Run first-time setup only if tables were just created
if not tables_exist:
# with get_db_session() as session:
# tcgplayer_service = TCGPlayerService(session, PricingService(session), FileService(session))
# tcgplayer_service.populate_tcgplayer_groups()
# tcgplayer_service.cron_load_prices()
logger.info("First-time database setup completed")
logger.info("Database initialization completed")
except Exception as e:
logger.error(f"Failed to initialize database: {str(e)}")
raise
def check_db_connection() -> bool:
"""Check if database connection is working"""
try:
with get_db_session() as session:
session.execute(text("SELECT 1"))
return True
except Exception as e:
logger.error(f"Database connection check failed: {str(e)}")
return False
def destroy_db() -> None:
"""Destroy all database tables"""
from .models import Base
try:
Base.metadata.drop_all(bind=engine)
logger.info("Database tables dropped successfully")
except Exception as e:
logger.error(f"Failed to destroy database: {str(e)}")
raise