lot_manager/data_upload.py

import os
import subprocess
import time
import paho.mqtt.client as mqtt

from device import device_name


def on_connect(client, userdata, flags, rc):
    global times
    if rc == 0:
        print("连接成功，执行数据推送和本地存储")
        client.publish('success', payload='连接成功，执行数据推送和本地存储', qos=0)
        # subprocess.Popen(['/usr/bin/bash /home/pi/lot_manager/bash/start_data_upload.sh'], shell=True)
        times = 3


def on_disconnect(client, userdata, rc):
    print("失败，执行本地存储")
    # subprocess.Popen(['/usr/bin/bash /home/pi/lot_manager/bash/stop_data_upload.sh'], shell=True)

times = 3

client = mqtt.Client(client_id=device_name)
client.username_pw_set("demo", "123456")
# Specify callback function
client.on_connect = on_connect
client.on_disconnect = on_disconnect

# 尝试连接 MQTT 服务器
while True:
    try:
        # ceshi-mqtt.lihaink.cn
        client.connect('192.168.1.27', 1883)
        client.loop_forever()
    except Exception as e:
        print("Connection failed:", e)
        if times == 0:
            # 执行本地存储
            on_disconnect(None, None, None)
        print("正在尝试重连")
        time.sleep(3)
        times -= 1