logging on disconnect

main.go

@@ -105,6 +105,9 @@ func animator(tk *rgbmatrix.ToolKit, mqMessages chan mqtt.Message) {
 	tk.PlayAnimation(NewAnimation(image.Point{64, 32}, mqMessages))
 
 }
+func onConnectionLostHandler(c MQTT.Client, reason error) {
+	log.Fatalf(reason.Error())
+}
 func setupMQTT() *mqtt.ClientOptions {
 	opts := MQTT.NewClientOptions()
 	opts.AddBroker(fmt.Sprintf("tcp://%s:%s", os.Getenv("MQTTBROKER"), os.Getenv("MQTTPORT")))
@@ -112,6 +115,7 @@ func setupMQTT() *mqtt.ClientOptions {
 	opts.SetPassword(os.Getenv("MQTTPASSWORD"))
 	opts.SetClientID("rgbboard")
 	opts.SetAutoReconnect(true)
+	opts.SetConnectionLostHandler(onConnectionLostHandler)
 
 	return opts
 }