netty5/codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttMessageIdVariableHeader.java
Trustin Lee 00d2cea8ba Overall clean-up on codec-mqtt
- Use simple string concatenation instead of String.format()
- Rewrite exception messages so that it follows our style
- Merge MqttCommonUtil and MqttValidationUtil into MqttCodecUtil
- Hide MqttCodecUtil from users
- Rename MqttConnectReturnCode.value to byteValue
- Rename MqttMessageFactory.create*() to new*()
- Rename QoS to MqttQoS
- Make MqttSubAckPayload.grantedQoSLevels immutable and add more useful
  constructor
2014-06-21 16:52:28 +09:00

52 lines
1.7 KiB
Java

/*
* Copyright 2014 The Netty Project
*
* The Netty Project licenses this file to you 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.netty.handler.codec.mqtt;
import io.netty.util.internal.StringUtil;
/**
* Variable Header containing only Message Id
* See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#msg-id">MQTTV3.1/msg-id</a>
*/
public final class MqttMessageIdVariableHeader {
private final int messageId;
public static MqttMessageIdVariableHeader from(int messageId) {
if (messageId < 1 || messageId > 0xffff) {
throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
}
return new MqttMessageIdVariableHeader(messageId);
}
private MqttMessageIdVariableHeader(int messageId) {
this.messageId = messageId;
}
public int messageId() {
return messageId;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder(StringUtil.simpleClassName(this)).append('[');
builder.append("messageId=").append(messageId);
builder.append(']');
return builder.toString();
}
}