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1   /*
2    * Copyright 2014 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  
17  package io.netty.handler.codec.mqtt;
18  
19  /**
20   * MQTT Message Types.
21   */
22  public enum MqttMessageType {
23      CONNECT(1),
24      CONNACK(2),
25      PUBLISH(3),
26      PUBACK(4),
27      PUBREC(5),
28      PUBREL(6),
29      PUBCOMP(7),
30      SUBSCRIBE(8),
31      SUBACK(9),
32      UNSUBSCRIBE(10),
33      UNSUBACK(11),
34      PINGREQ(12),
35      PINGRESP(13),
36      DISCONNECT(14);
37  
38      private final int value;
39  
40      MqttMessageType(int value) {
41          this.value = value;
42      }
43  
44      public int value() {
45          return value;
46      }
47  
48      public static MqttMessageType valueOf(int type) {
49          for (MqttMessageType t : values()) {
50              if (t.value == type) {
51                  return t;
52              }
53          }
54          throw new IllegalArgumentException("unknown message type: " + type);
55      }
56  }
57