wehub-resource-sync
114 lines
2.6 KiB
Python
114 lines
2.6 KiB
Python
"""
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数据库配置
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包含数据库连接、会话管理和依赖注入
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"""
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import os
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from sqlalchemy import create_engine
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from sqlalchemy.orm import sessionmaker, Session
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from sqlalchemy.pool import StaticPool
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from typing import Generator
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from backend.models.base import Base
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# 数据库配置
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DATABASE_URL = os.getenv(
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"DATABASE_URL",
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"sqlite:///autoclip.db"
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)
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# 如果没有设置环境变量，使用配置函数获取数据库URL
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if DATABASE_URL == "sqlite:///autoclip.db":
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try:
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from .config import get_database_url
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DATABASE_URL = get_database_url()
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except ImportError:
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# 如果导入失败，保持默认值
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pass
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# 创建数据库引擎
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if "sqlite" in DATABASE_URL:
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# SQLite配置
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engine = create_engine(
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DATABASE_URL,
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connect_args={
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"check_same_thread": False,
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"timeout": 30
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},
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poolclass=StaticPool,
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pool_pre_ping=True,
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echo=False # 设置为True可以看到SQL语句
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)
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else:
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# PostgreSQL配置
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engine = create_engine(
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DATABASE_URL,
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pool_pre_ping=True,
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pool_recycle=300,
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echo=False
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)
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# 创建会话工厂
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SessionLocal = sessionmaker(
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autocommit=False,
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autoflush=False,
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bind=engine
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)
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def get_db() -> Generator[Session, None, None]:
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"""
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数据库会话依赖注入
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用于FastAPI的依赖注入系统
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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()
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def create_tables():
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"""创建所有数据库表"""
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Base.metadata.create_all(bind=engine)
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def drop_tables():
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"""删除所有数据库表"""
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Base.metadata.drop_all(bind=engine)
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def reset_database():
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"""重置数据库"""
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drop_tables()
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create_tables()
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from sqlalchemy import text
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def test_connection() -> bool:
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"""测试数据库连接"""
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try:
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with engine.connect() as conn:
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conn.execute(text("SELECT 1")).fetchone()
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return True
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except Exception as e:
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print(f"数据库连接测试失败: {e}")
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return False
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# 数据库初始化
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def init_database():
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"""初始化数据库"""
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print("正在初始化数据库...")
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# 测试连接
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if not test_connection():
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print("❌ 数据库连接失败")
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return False
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# 创建表
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try:
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create_tables()
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print("✅ 数据库表创建成功")
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return True
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except Exception as e:
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print(f"❌ 数据库表创建失败: {e}")
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return False
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if __name__ == "__main__":
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# 直接运行此文件时初始化数据库
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init_database() |