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38 lines
892 B
38 lines
892 B
"""
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AmazingData 数据服务平台 - 数据库配置
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"""
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from sqlalchemy import create_engine
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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 backend.config import settings
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# 创建数据库引擎
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engine = create_engine(
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settings.DATABASE_URL,
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pool_pre_ping=True,
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pool_recycle=3600,
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echo=settings.DEBUG
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)
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# 创建会话工厂
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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# 创建基类
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Base = declarative_base()
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def get_db():
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"""获取数据库会话（用于依赖注入）"""
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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()
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def init_db():
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"""初始化数据库（创建所有表）"""
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from backend.models import tables # 导入所有表模型
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Base.metadata.create_all(bind=engine)
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print("Database tables created successfully!") |