85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
import time
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import paho.mqtt.client as mqtt
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from tool import *
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from config import broker, port, subscribe_topic, username, password, info_topic
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def valid(msg, client):
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origin_data = json.loads(msg.payload.decode('utf-8'))
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if 'msg' not in origin_data:
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client.publish(info_topic, payload=publish_payload(code=404, msg="msg must be supplied"), qos=0)
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return False
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return True
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class MQTTClient:
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def __init__(self, broker, port, topic, username, password):
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self.broker = broker
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self.port = port
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self.topic = topic
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self.username = username
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self.password = password
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# 千万不要指定client_id 不然死翘翘
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self.client = mqtt.Client(client_id=subscribe_topic)
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self.client.username_pw_set(self.username, self.password)
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self.client.on_connect = self.on_connect
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self.client.on_message = self.on_message
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def on_connect(self, client, userdata, flags, rc):
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if rc == 0:
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self.client.subscribe(self.topic)
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client.publish(info_topic, payload=publish_payload(code=200, msg='成功订阅' + self.topic),
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qos=0)
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subprocess.Popen(['/bin/bash /home/pi/agri_xumu/bash/start_push_stream.sh'], shell=True)
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def on_message(self, client, userdata, msg):
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if not valid(msg, client):
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return
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try:
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origin_data = json.loads(msg.payload.decode('utf-8'))
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data = origin_data["msg"]
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if data == "push_stream":
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# 启动推流视频
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push_stream(client)
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elif data == "close_stream":
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# 关闭推流视频
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close_stream(client)
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elif data == "exec":
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# 执行命令
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exec_sh(msg, client)
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elif data == "update":
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# git更新项目和配置文件
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update(client)
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elif data == "reload":
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# 重启配置
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reload(client)
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elif data == "status":
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# 查看运行状态
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get_status(client)
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else:
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# 错误类型
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client.publish(info_topic, payload=publish_payload(code=404, msg='No Such Msg Type'), qos=0)
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except Exception as e:
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pass
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def start(self):
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self.client.connect(self.broker, self.port)
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if __name__ == '__main__':
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# MQTT客户端
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MQTT = MQTTClient(broker, port, subscribe_topic, username, password)
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# 循环连接
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while True:
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try:
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MQTT.start()
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# 阻塞监听
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MQTT.client.loop_forever()
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except Exception as e:
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# 异常等待时间在进行连接
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subprocess.Popen(['/bin/bash /home/pi/agri_xumu/bash/stop_push_stream.sh'], shell=True)
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time.sleep(30)
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