39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
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(["supervisorctl stop sensor_to_local && supervisorctl start sensor_to_server"])
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times = 3
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def on_connect_fail():
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print("失败，执行本地存储")
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subprocess.Popen(["supervisorctl stop sensor_to_server && supervisorctl start sensor_to_local"])
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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()
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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('127.0.0.1', 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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times -= 1
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on_connect_fail()
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