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1   /*
2    * Copyright 2020 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    *   https://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  import io.netty.util.internal.StringUtil;
20  
21  /**
22   * Variable Header containing Packet Id, reason code and Properties as in MQTT v5 spec.
23   */
24  public final class MqttPubReplyMessageVariableHeader extends MqttMessageIdVariableHeader {
25  
26      private final byte reasonCode;
27      private final MqttProperties properties;
28  
29      public static final byte REASON_CODE_OK = 0;
30  
31      public MqttPubReplyMessageVariableHeader(int messageId, byte reasonCode, MqttProperties properties) {
32          super(messageId);
33          if (messageId < 1 || messageId > 0xffff) {
34              throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
35          }
36          this.reasonCode = reasonCode;
37          this.properties = MqttProperties.withEmptyDefaults(properties);
38      }
39  
40      public byte reasonCode() {
41          return reasonCode;
42      }
43  
44      public MqttProperties properties() {
45          return properties;
46      }
47  
48      @Override
49      public String toString() {
50          return StringUtil.simpleClassName(this) + "[" +
51                  "messageId=" + messageId() +
52                  ", reasonCode=" + reasonCode +
53                  ", properties=" + properties +
54                  ']';
55      }
56  }