snippet/mqtt/handler.go

package mqtt

import (
	"fmt"

	MQTT "github.com/eclipse/paho.mqtt.golang"
)

var connHandler MQTT.OnConnectHandler = func(client MQTT.Client) {
	token := client.Subscribe("#", 0, serviceHandler)
	if token.Wait() && token.Error() != nil {
		fmt.Println(token.Error())
	}
}

var connLostHandler MQTT.ConnectionLostHandler = func(client MQTT.Client, err error) {
	fmt.Println(err.Error())
}

// 具体业务订阅的处理，此处为示例
var serviceHandler MQTT.MessageHandler = func(client MQTT.Client, msg MQTT.Message) {
	fmt.Println(msg.Topic())
}