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Vert.x MQTT reactive client and server

There is a newer version: 5.0.0.CR1

/*
 * Copyright 2016 Red Hat Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.vertx.mqtt;

import io.netty.handler.codec.mqtt.MqttQoS;
import io.netty.handler.codec.mqtt.MqttSubscriptionOption;
import io.vertx.codegen.annotations.CacheReturn;
import io.vertx.codegen.annotations.GenIgnore;
import io.vertx.codegen.annotations.VertxGen;

/**
 * Represents a subscription to a topic
 */
@VertxGen
public interface MqttTopicSubscription {

  /**
   * @return  Subscription topic name
   */
  @CacheReturn
  String topicName();

  /**
   * @return  Quality of Service level for the subscription
   */
  @CacheReturn
  MqttQoS qualityOfService();

  /**
   * Subscription option
   * @return Subscription options
   */
  @GenIgnore(GenIgnore.PERMITTED_TYPE)
  @CacheReturn
  MqttSubscriptionOption subscriptionOption();

}