| /** |
| * 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); |
| } |
| } |