| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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.onosproject.provider.of.device.impl; |
| |
| import org.jboss.netty.util.HashedWheelTimer; |
| import org.jboss.netty.util.Timeout; |
| import org.jboss.netty.util.TimerTask; |
| import org.onlab.util.Timer; |
| import org.onosproject.openflow.controller.OpenFlowSwitch; |
| import org.onosproject.openflow.controller.RoleState; |
| import org.projectfloodlight.openflow.protocol.OFPortStatsRequest; |
| import org.projectfloodlight.openflow.types.OFPort; |
| import org.slf4j.Logger; |
| |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /* |
| * Sends Group Stats Request and collect the group statistics with a time interval. |
| */ |
| public class PortStatsCollector implements TimerTask { |
| |
| // TODO: Refactoring is required using ScheduledExecutorService |
| |
| private final HashedWheelTimer timer = Timer.getTimer(); |
| private final OpenFlowSwitch sw; |
| private final Logger log = getLogger(getClass()); |
| private int refreshInterval; |
| private final AtomicLong xidAtomic = new AtomicLong(1); |
| |
| private Timeout timeout; |
| private volatile boolean stopped; |
| |
| /** |
| * Creates a GroupStatsCollector object. |
| * |
| * @param sw Open Flow switch |
| * @param interval time interval for collecting group statistic |
| */ |
| public PortStatsCollector(OpenFlowSwitch sw, int interval) { |
| this.sw = sw; |
| this.refreshInterval = interval; |
| } |
| |
| @Override |
| public void run(Timeout to) throws Exception { |
| if (stopped || timeout.isCancelled()) { |
| return; |
| } |
| log.trace("Collecting stats for {}", sw.getStringId()); |
| |
| sendPortStatistic(); |
| |
| if (!stopped && !timeout.isCancelled()) { |
| log.trace("Scheduling stats collection in {} seconds for {}", |
| this.refreshInterval, this.sw.getStringId()); |
| timeout.getTimer().newTimeout(this, refreshInterval, TimeUnit.SECONDS); |
| } |
| } |
| |
| synchronized void adjustPollInterval(int pollInterval) { |
| this.refreshInterval = pollInterval; |
| // task.cancel(); |
| // task = new InternalTimerTask(); |
| // timer.scheduleAtFixedRate(task, pollInterval * SECONDS, pollInterval * 1000); |
| } |
| |
| private void sendPortStatistic() { |
| if (sw.getRole() != RoleState.MASTER) { |
| return; |
| } |
| Long statsXid = xidAtomic.getAndIncrement(); |
| OFPortStatsRequest statsRequest = sw.factory().buildPortStatsRequest() |
| .setPortNo(OFPort.ANY) |
| .setXid(statsXid) |
| .build(); |
| sw.sendMsg(statsRequest); |
| } |
| |
| /** |
| * Starts the collector. |
| */ |
| public synchronized void start() { |
| log.info("Starting Port Stats collection thread for {}", sw.getStringId()); |
| stopped = false; |
| timeout = timer.newTimeout(this, 1, TimeUnit.SECONDS); |
| } |
| |
| /** |
| * Stops the collector. |
| */ |
| public synchronized void stop() { |
| log.info("Stopping Port Stats collection thread for {}", sw.getStringId()); |
| stopped = true; |
| timeout.cancel(); |
| } |
| } |