/**
* 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.protocol;
import java.util.ArrayList;
import java.util.List;
import org.jboss.netty.buffer.ChannelBuffer;
import org.openflow.util.U16;
/**
* Represents ofp_packet_queue
* @author Andrew Ferguson (adf@cs.brown.edu)
*/
public class OFPacketQueue {
public static int MINIMUM_LENGTH = 8;
protected int queueId;
protected short length;
protected List<OFQueueProp> properties = new ArrayList<OFQueueProp>();
public OFPacketQueue() {
this.queueId = -1;
this.length = U16.t(MINIMUM_LENGTH);
}
public OFPacketQueue(int queueId) {
this.queueId = queueId;
this.length = U16.t(MINIMUM_LENGTH);
}
/**
* @return the queueId
*/
public long getQueueId() {
return queueId;
}
/**
* @param queueId the queueId to set
*/
public void setQueueId(int queueId) {
this.queueId = queueId;
}
/**
* @return the queue's properties
*/
public List<OFQueueProp> getProperties() {
return properties;
}
/**
* @param properties the properties to set
*/
public void setProperties(List<OFQueueProp> properties) {
this.properties = properties;
this.length = U16.t(MINIMUM_LENGTH);
for (OFQueueProp prop : properties) {
this.length += prop.getLength();
}
}
/**
* @return the length
*/
public short getLength() {
return length;
}
public void readFrom(ChannelBuffer data) {
this.queueId = data.readInt();
this.length = data.readShort();
data.readShort(); // pad
int availLength = (this.length - MINIMUM_LENGTH);
this.properties.clear();
while (availLength > 0) {
OFQueueProp prop = new OFQueueProp();
prop.readFrom(data);
properties.add(prop);
availLength -= prop.getLength();
}
}
public void writeTo(ChannelBuffer data) {
data.writeInt(queueId);
data.writeShort(length);
data.writeShort(0); // pad
for (OFQueueProp prop : properties) {
prop.writeTo(data);
}
}
@Override
public int hashCode() {
final int prime = 359;
int result = super.hashCode();
result = prime * result + queueId;
result = prime * result + length;
result = prime * result + properties.hashCode();
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!super.equals(obj)) {
return false;
}
if (!(obj instanceof OFPacketQueue)) {
return false;
}
OFPacketQueue other = (OFPacketQueue) obj;
if (queueId != other.queueId) {
return false;
}
if (! properties.equals(other.properties)) {
return false;
}
return true;
}
}