EnvMQTTEnable            = "MINIO_NOTIFY_MQTT_ENABLE"
	EnvMQTTBroker            = "MINIO_NOTIFY_MQTT_BROKER"
	EnvMQTTTopic             = "MINIO_NOTIFY_MQTT_TOPIC"
	EnvMQTTQoS               = "MINIO_NOTIFY_MQTT_QOS"
	EnvMQTTUsername          = "MINIO_NOTIFY_MQTT_USERNAME"
	EnvMQTTPassword          = "MINIO_NOTIFY_MQTT_PASSWORD"
	EnvMQTTReconnectInterval = "MINIO_NOTIFY_MQTT_RECONNECT_INTERVAL"

	AMQP          map[string]target.AMQPArgs          `json:"amqp"`
	Elasticsearch map[string]target.ElasticsearchArgs `json:"elasticsearch"`
	Kafka         map[string]target.KafkaArgs         `json:"kafka"`
	MQTT          map[string]target.MQTTArgs          `json:"mqtt"`
	MySQL         map[string]target.MySQLArgs         `json:"mysql"`
	NATS          map[string]target.NATSArgs          `json:"nats"`
	NSQ           map[string]target.NSQArgs           `json:"nsq"`

ARGS:
MINIO_NOTIFY_MQTT_ENABLE*              (on|off)    enable notify_mqtt target, default is 'off'
MINIO_NOTIFY_MQTT_BROKER*              (uri)       MQTT server endpoint e.g. `tcp://localhost:1883`
MINIO_NOTIFY_MQTT_TOPIC*               (string)    name of the MQTT topic to publish
MINIO_NOTIFY_MQTT_USERNAME             (string)    MQTT username
MINIO_NOTIFY_MQTT_PASSWORD             (string)    MQTT password

			Key:         target.MqttBroker,
			Description: "MQTT server endpoint e.g. `tcp://localhost:1883`",
			Type:        "uri",
			Sensitive:   true,
		},
		config.HelpKV{
			Key:         target.MqttTopic,
			Description: "name of the MQTT topic to publish",
			Type:        "string",
		},
		config.HelpKV{
			Key:         target.MqttUsername,
			Description: "MQTT username",
			Optional:    true,

}

// ConsoleLogger is introduced to workaround the dependency about logrus
type ConsoleLogger struct {
	Enable bool `json:"enable"`
}

// serverConfigV33 is just like version '32', removes clientID from NATS and MQTT, and adds queueDir, queueLimit in all notification targets.
type serverConfigV33 struct {
	quick.Config `json:"-"` // ignore interfaces

	Version string `json:"version"`

	// S3 API configuration.

notify_webhook        publish bucket notifications to webhook endpoints
notify_amqp           publish bucket notifications to AMQP endpoints
notify_kafka          publish bucket notifications to Kafka endpoints
notify_mqtt           publish bucket notifications to MQTT endpoints
notify_nats           publish bucket notifications to NATS endpoints
notify_nsq            publish bucket notifications to NSQ endpoints

	}
	for k, args := range cfg.Notify.Elasticsearch {
		notify.SetNotifyES(newCfg, k, args)
	}
	for k, args := range cfg.Notify.Kafka {
		notify.SetNotifyKafka(newCfg, k, args)
	}
	for k, args := range cfg.Notify.MQTT {
		notify.SetNotifyMQTT(newCfg, k, args)
	}
	for k, args := range cfg.Notify.MySQL {
		notify.SetNotifyMySQL(newCfg, k, args)
	}
	for k, args := range cfg.Notify.NATS {
		notify.SetNotifyNATS(newCfg, k, args)

			Description:     "publish bucket notifications to Kafka endpoints",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:             config.NotifyMQTTSubSys,
			Description:     "publish bucket notifications to MQTT endpoints",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:             config.NotifyNATSSubSys,
			Description:     "publish bucket notifications to NATS endpoints",
			MultipleTargets: true,
		},

		if err = kafkaArgs.Validate(); err != nil {
			return nil, err
		}

		kafkaTargets[k] = kafkaArgs
	}

	return kafkaTargets, nil
}

// DefaultMQTTKVS - default MQTT config
var (
	DefaultMQTTKVS = config.KVS{
		config.KV{
			Key:   config.Enable,
			Value: config.EnableOff,
		},
		config.KV{
			Key:   target.MqttBroker,
			Value: "",
		},
		config.KV{

github.com/eapache/queue v1.1.0 h1:YOEu7KNc61ntiQlcEeUIoDTJ2o8mQznoNvUhiigpIqc=
github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
github.com/eclipse/paho.mqtt.golang v1.4.3 h1:2kwcUGn8seMUfWndX0hGbvH8r7crgcJguQNCyp70xik=
github.com/eclipse/paho.mqtt.golang v1.4.3/go.mod h1:CSYvoAlsMkhYOXh/oKyxa8EcBci6dVkLCbo5tTC1RIE=
github.com/elastic/go-elasticsearch/v7 v7.17.10 h1:TCQ8i4PmIJuBunvBS6bwT2ybzVFxxUhhltAs3Gyu1yo=