自动化“监视”剩余内存&句柄数

    使用python脚本实现，通过cgi命令获取剩余内存和句柄数，判断内存值与句柄数是否少于/超出临界值，若已少于/超出临界值则通过邮件的方式通知。

    注：收发邮箱可自定义，若邮箱要开启加密，需同步修改代码中的邮箱服务器端口

    ps：此脚本只应用于特殊版本，cgi接口是研发特地加的，标准版本无此接口，后续可考虑实现串口通信，应用于标准版本

import requests
import re
from requests.auth import HTTPBasicAuth
import time
import smtplib
from email.mime.text import MIMEText

# 最小报警内存值
alarm_free_memory = 30

def GetHttp(url_base,url_param,user,password):
    try:
        headers = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.70 Safari/537.36'}
        r = requests.get(url_base,auth=HTTPBasicAuth(user, password),params=url_param,headers=headers,timeout=5)
        r.raise_for_status()
        print(r.url)
        mem_text = r.text[0:len(r.text)-10]
        print(mem_text)
        # print("----------------------------")
        return mem_text
    # except requests.exceptions.ConnectionError as reason:
    #     print('ConnectionError -- ' + str(reason))
    # except requests.exceptions.ChunkedEncodingError:
    #     print('ChunkedEncodingError')
    # except requests.exceptions.HTTPError as reason:
    #     print('HTTPError' + str(reason))
    except Exception as reason:
        print('HTTPError' + str(reason))

def send_email(email_text):
    #设置服务器所需信息
    #163邮箱服务器地址
    mail_host = 'smtp.163.com'  
    #163用户名
    mail_user = 'img1234'  
    #密码(部分邮箱为授权码) 
    mail_pass = 'ms1234'   
    #邮件发送方邮箱地址
    sender = 'img1234@163.com'  
    #邮件接受方邮箱地址，注意需要[]包裹，这意味着你可以写多个邮件地址群发
    receivers = ['kayla@milesight.com']  

    #设置email信息
    #邮件内容设置
    message = MIMEText(email_text,'plain','utf-8')
    #邮件主题       
    message['Subject'] = 'IPC Alarm' 
    #发送方信息
    message['From'] = sender 
    #接受方信息     
    message['To'] = receivers[0]  

    #登录并发送邮件
    try:
        smtpObj = smtplib.SMTP() 
        #连接到服务器
        smtpObj.connect(mail_host,25)
        #登录到服务器
        smtpObj.login(mail_user,mail_pass) 
        #发送
        smtpObj.sendmail(
            sender,receivers,message.as_string()) 
        #退出
        smtpObj.quit() 
        # print('success')
    except smtplib.SMTPException as e:
        print('error',e) #打印错误

if __name__ == '__main__':
    user = 'admin'
    password = 'dm123456'
    url_param = None
    while 1:
        url_base = "http://192.168.4.109/vb.htm?debugfree" 
        mem_text = GetHttp(url_base, url_param, user, password)
        mem_array = re.findall(r"d+.?d*", mem_text)
        free_mem = int(mem_array[2])
        if free_mem < alarm_free_memory:
            send_email(mem_text)

        time.sleep(5)

        url_base = "http://192.168.4.109/vb.htm?debugfd=msserver"
        fd_text = GetHttp(url_base, url_param, user, password)
        total_fd = int(fd_text[0:3])
        if total_fd > 30:
            send_email(fd_text)

        time.sleep(5)

        url_base = "http://192.168.4.109/vb.htm?debugfd=avserver"
        fd_text = GetHttp(url_base, url_param, user, password)
        total_fd = int(fd_text[0:3])
        if total_fd > 50:
            send_email(fd_text)
        

        time.sleep(30)