# -*- coding: utf-8 -*-# -*- coding: utf-8 -*-
# 订阅者

import paho.mqtt.client as mqtt
broker = '121.40.129.71'

# 连接成功回调
def on_connect(client, userdata, flags, rc,properties):
    if rc.is_failure:
        print(f"连接失败: {rc}. loop_forever()将重新连接")
    else:
        print(f'连接成功: {rc}')
        client.subscribe('host_status/#')


def on_subscribe(client, userdata, mid, reason_code_list, properties):  # 订阅回调
    if reason_code_list[0].is_failure:
        print(f'订阅失败: {reason_code_list[0]}')
    else:
        print(f'订阅成功: {reason_code_list[0].value}')

def on_unsubscribe(client, userdata, mid, reason_code_list, properties):    # 取消订阅回调
    if len(reason_code_list) == 0 or not reason_code_list[0].is_failure:
        print("取消订阅成功(if SUBACK is received in MQTTv3 it success)")
    else:
        print(f"取消订阅失败: {reason_code_list[0]}")
    client.disconnect()   # 断开连接

# 消息接收回调
def on_message(client, userdata, msg):
    print(msg.topic+" "+str(msg.payload))

mqtt = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id="book_1")
mqtt.on_connect = on_connect
mqtt.on_message = on_message
mqtt.on_subscribe = on_subscribe
mqtt.on_unsubscribe = on_unsubscribe
mqtt.is_connected()

mqtt.user_data_set(["user_data", "book_1"])
mqtt.connect(broker, 48835, 60)

mqtt.loop_forever()
print(f"收到以下消息: {mqtt.user_data_get()}")
# while True:
#     rc = mqtt.loop(timeout=1.0)
#     print(11)
#     if rc != 0:
#         mqtt.reconnect()