70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
"""
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Database configuration for scheduled downloads.
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Uses SQLite with SQLAlchemy ORM for persistent storage.
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"""
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from sqlalchemy import create_engine, event
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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from pathlib import Path
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import logging
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logger = logging.getLogger(__name__)
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# Database file location - uses /app/data in Docker container
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# This directory should be mounted as a volume for persistence
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DATA_DIR = Path(__file__).parent.parent / "data"
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DB_PATH = DATA_DIR / "scheduled_tasks.db"
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# Ensure data directory exists (will be mounted volume in Docker)
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DATA_DIR.mkdir(parents=True, exist_ok=True)
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# Create engine with proper settings for SQLite in Docker
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engine = create_engine(
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f"sqlite:///{DB_PATH}",
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echo=False,
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connect_args={
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"check_same_thread": False, # Allow multi-threaded access
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"timeout": 30 # Longer timeout for container I/O
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},
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pool_pre_ping=True, # Verify connections before using
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)
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# Enable foreign keys for SQLite
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@event.listens_for(engine, "connect")
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def set_sqlite_pragma(dbapi_conn, connection_record):
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cursor = dbapi_conn.cursor()
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cursor.execute("PRAGMA foreign_keys=ON")
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cursor.close()
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# Create session factory
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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# Base class for models
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Base = declarative_base()
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def init_database():
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"""Initialize database - called on container startup"""
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try:
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Base.metadata.create_all(bind=engine)
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logger.info(f"Database initialized at {DB_PATH}")
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except Exception as e:
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logger.error(f"Failed to initialize database: {e}")
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raise
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def get_db():
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"""
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Dependency for FastAPI to get database session.
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Usage:
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@app.get("/endpoint")
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def endpoint(db: Session = Depends(get_db)):
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...
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"""
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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() |