graphicek/server/integrations/mqtt.go

package integrations

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

type MQTTIntegration struct{}

func (s *MQTTIntegration) Publish(server string, username string, password string, clientId string, retain bool, qos byte, topic string, message string) error {
	opts := MQTT.NewClientOptions()
	opts.AddBroker(server)
	opts.SetUsername(username)
	opts.SetPassword(password)
	opts.SetClientID(clientId)

	client := MQTT.NewClient(opts)
	if token := client.Connect(); token.Wait() && token.Error() != nil {
		return token.Error()
	}

	token := client.Publish(topic, qos, retain, message)
	token.Wait()

	client.Disconnect(250)

	return nil
}