38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
import os
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import subprocess
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import time
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import paho.mqtt.client as mqtt
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def on_connect(client, userdata, flags, rc):
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global times
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if rc == 0:
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# print("连接成功，执行数据推送和本地存储")
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subprocess.Popen(['/usr/bin/bash /home/pi/lot_manager/bash/start_data_upload.sh'], shell=True)
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times = 3
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def on_connect_fail(client, userdata):
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# print("失败，执行本地存储")
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subprocess.Popen(['/usr/bin/bash /home/pi/lot_manager/bash/stop_data_upload.sh'], shell=True)
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times = 3
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if __name__ == '__main__':
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while True:
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try:
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client = mqtt.Client(client_id=os.getenv('device_name'))
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client.username_pw_set("demo", "123456")
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# Specify callback function
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client.on_connect = on_connect
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client.on_connect_fail = on_connect_fail
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# Establish a connection
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client.connect('192.168.1.27', 1883)
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# Publish a message
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client.loop_forever()
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except Exception as e:
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print("等待5秒重新连接客户端")
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time.sleep(5)
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if times == 0:
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on_connect_fail(None, None)
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times -= 1 |