tornado硬件监控系统-连接数据库与数据迁移

Posted 2020-12-10 topass123

#-*- coding: utf-8 -*-
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.dialects.mysql import BIGINT,DECIMAL,DATE,TIME,DATETIME
from sqlalchemy import Column

#调用
Base = declarative_base()
#连接数据创建元类做映射
metadata = Base.metadata
‘‘‘
导入模型的继承父类
导入数据类型
导入创建字段类
定义模型
‘‘‘

#内存统计
class Mem(Base):
    __tablename__ = "mem"
    id = Column(BIGINT,primary_key=True)
    percent = Column(DECIMAL(6,2))
    total = Column(DECIMAL(8,2))
    used = Column(DECIMAL(8,2))
    free = Column(DECIMAL(8,2))
    create_date = Column(DATE)
    create_time = Column(TIME)
    create_dt = Column(DATETIME)

#交换分区
class Swap(Base):
    __tablename__ = "swap"
    id = Column(BIGINT,primary_key=True)
    percent = Column(DECIMAL(6,2))
    total = Column(DECIMAL(8,2))
    used = Column(DECIMAL(8,2))
    free = Column(DECIMAL(8,2))
    create_date = Column(DATE)
    create_time = Column(TIME)
    create_dt = Column(DATETIME)

#cpu统计
class Cpu(Base):
    __tablename__ = "cpu"
    id = Column(BIGINT,primary_key=True)
    percent = Column(DECIMAL(6,2))
    create_date = Column(DATE)
    create_time = Column(TIME)
    create_dt = Column(DATETIME)

if __name__ == "__main__":
    import mysql.connector
    from sqlalchemy import create_engine
    mysql_configs = dict(
        db_host="127.0.0.1",
        db_name="moniter",
        db_port=3306,
        db_user="root",
        db_pwd="",
    )
    ‘‘‘
    连接的格式：mysql+驱动：//用户：密码@主机：端口/数据库名称
    ‘‘‘

    link = "mysql+mysqlconnector://{db_user}:{db_pwd}@{db_host}:{db_port}/{db_name}".format(
        **mysql_configs
    )

    #创建连接,echo输出日志
    engine = create_engine(link,encoding="utf-8",echo=True)
    #映射
    metadata.create_all(engine)

登录数据库，创建上面的数据库名字

 

数据迁移，终端运行：

(venv) ******moniterappmodels>

Python models.py

 查看结果：