/**
* Copyright (C) 2010-2012, FuseSource Corp. All rights reserved.
*
* http://fusesource.com
*
* 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 org.fusesource.mqtt.codec;
import org.fusesource.hawtbuf.DataByteArrayInputStream;
import org.fusesource.hawtbuf.DataByteArrayOutputStream;
import java.io.IOException;
import java.net.ProtocolException;
import java.util.Arrays;
import static org.fusesource.mqtt.codec.MessageSupport.*;
/**
* <p>
* </p>
*
* @author <a href="http://hiramchirino.com">Hiram Chirino</a>
*/
public class SUBACK implements Message {
public static final byte[] NO_GRANTED_QOS = new byte[0];
public static final byte TYPE = 9;
private short messageId;
private byte grantedQos[] = NO_GRANTED_QOS;
public byte messageType() {
return TYPE;
}
public SUBACK decode(MQTTFrame frame) throws ProtocolException {
assert(frame.buffers.length == 1);
DataByteArrayInputStream is = new DataByteArrayInputStream(frame.buffers[0]);
messageId = is.readShort();
grantedQos = is.readBuffer(is.available()).toByteArray();
return this;
}
public MQTTFrame encode() {
try {
DataByteArrayOutputStream os = new DataByteArrayOutputStream(2+grantedQos.length);
os.writeShort(messageId);
os.write(grantedQos);
MQTTFrame frame = new MQTTFrame();
frame.commandType(TYPE);
return frame.buffer(os.toBuffer());
} catch (IOException e) {
throw new RuntimeException("The impossible happened");
}
}
public byte[] grantedQos() {
return grantedQos;
}
public SUBACK grantedQos(byte[] grantedQos) {
this.grantedQos = grantedQos;
return this;
}
public short messageId() {
return messageId;
}
public SUBACK messageId(short messageId) {
this.messageId = messageId;
return this;
}
@Override
public String toString() {
return "SUBACK{" +
"grantedQos=" + Arrays.toString(grantedQos) +
", messageId=" +messageId +
'}';
}
}