/**
* Copyright 2012, Andrew Ferguson, Brown University
*
* 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.openflow.vendor.openflow;
import java.util.ArrayList;
import java.util.List;
import org.jboss.netty.buffer.ChannelBuffer;
import org.openflow.protocol.OFPacketQueue;
/**
* Class that represents the vendor data in a queue modify or delete request
*
* @author Andrew Ferguson (adf@cs.brown.edu)
*/
public class OFQueueVendorData extends OFOpenFlowVendorData {
public static int MINIMUM_LENGTH = 8;
protected short portNumber;
protected List<OFPacketQueue> queues = new ArrayList<OFPacketQueue>();
public OFQueueVendorData(int dataType) {
super(dataType);
}
/**
* @return the portNumber
*/
public short getPortNumber() {
return portNumber;
}
/**
* @param port the port on which the queue is
*/
public void setPortNumber(short portNumber) {
this.portNumber = portNumber;
}
/**
* @return the queues
*/
public List<OFPacketQueue> getQueues() {
return queues;
}
/**
* @param queues the queues to modify or delete
*/
public void setQueues(List<OFPacketQueue> queues) {
this.queues = queues;
}
/**
* @return the total length of the queue modify or delete msg
*/
@Override
public int getLength() {
int queuesLength = 0;
for (OFPacketQueue queue : queues) {
queuesLength += queue.getLength();
}
return super.getLength() + MINIMUM_LENGTH + queuesLength;
}
/**
* Read the queue message data from the ChannelBuffer
* @param data the channel buffer from which we're deserializing
* @param length the length to the end of the enclosing message
*/
public void readFrom(ChannelBuffer data, int length) {
super.readFrom(data, length);
portNumber = data.readShort();
data.readInt(); // pad
data.readShort(); // pad
int availLength = (length - MINIMUM_LENGTH);
this.queues.clear();
while (availLength > 0) {
OFPacketQueue queue = new OFPacketQueue();
queue.readFrom(data);
queues.add(queue);
availLength -= queue.getLength();
}
}
/**
* Write the queue message data to the ChannelBuffer
* @param data the channel buffer to which we're serializing
*/
public void writeTo(ChannelBuffer data) {
super.writeTo(data);
data.writeShort(this.portNumber);
data.writeInt(0); // pad
data.writeShort(0); // pad
for (OFPacketQueue queue : queues) {
queue.writeTo(data);
}
}
}