/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford 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 net.floodlightcontroller.core.internal;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.TimeUnit;
import net.floodlightcontroller.core.IOFSwitch;
import net.floodlightcontroller.threadpool.IThreadPoolService;
import org.openflow.protocol.OFMessage;
import org.openflow.protocol.OFStatisticsReply;
import org.openflow.protocol.OFType;
import org.openflow.protocol.statistics.OFStatistics;
/**
* A concrete implementation that handles asynchronously receiving OFStatistics
*
* @author David Erickson (daviderickson@cs.stanford.edu)
*/
public class OFStatisticsFuture extends
OFMessageFuture<List<OFStatistics>> {
protected volatile boolean finished;
public OFStatisticsFuture(IThreadPoolService tp,
IOFSwitch sw, int transactionId) {
super(tp, sw, OFType.STATS_REPLY, transactionId);
init();
}
public OFStatisticsFuture(IThreadPoolService tp,
IOFSwitch sw, int transactionId, long timeout, TimeUnit unit) {
super(tp, sw, OFType.STATS_REPLY, transactionId, timeout, unit);
init();
}
private void init() {
this.finished = false;
this.result = new CopyOnWriteArrayList<OFStatistics>();
}
@Override
protected void handleReply(IOFSwitch sw, OFMessage msg) {
OFStatisticsReply sr = (OFStatisticsReply) msg;
synchronized (this.result) {
this.result.addAll(sr.getStatistics());
if ((sr.getFlags() & 0x1) == 0) {
this.finished = true;
}
}
}
@Override
protected boolean isFinished() {
return finished;
}
@Override
protected void unRegister() {
super.unRegister();
sw.cancelStatisticsReply(transactionId);
}
}