lot_manager/MQTT.py

96 lines
3.1 KiB
Python

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