diff options
Diffstat (limited to 'framework/src/onos/providers/openflow/group/src/main/java/org/onosproject/provider/of/group/impl/GroupStatsCollector.java')
-rw-r--r-- | framework/src/onos/providers/openflow/group/src/main/java/org/onosproject/provider/of/group/impl/GroupStatsCollector.java | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/framework/src/onos/providers/openflow/group/src/main/java/org/onosproject/provider/of/group/impl/GroupStatsCollector.java b/framework/src/onos/providers/openflow/group/src/main/java/org/onosproject/provider/of/group/impl/GroupStatsCollector.java new file mode 100644 index 00000000..9816426b --- /dev/null +++ b/framework/src/onos/providers/openflow/group/src/main/java/org/onosproject/provider/of/group/impl/GroupStatsCollector.java @@ -0,0 +1,111 @@ +/* + * 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.group.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.OFGroupDescStatsRequest; +import org.projectfloodlight.openflow.protocol.OFGroupStatsRequest; +import org.projectfloodlight.openflow.types.OFGroup; +import org.slf4j.Logger; + +import java.util.concurrent.TimeUnit; + +import static org.slf4j.LoggerFactory.getLogger; + +/* + * Sends Group Stats Request and collect the group statistics with a time interval. + */ +public class GroupStatsCollector implements TimerTask { + + private final HashedWheelTimer timer = Timer.getTimer(); + private final OpenFlowSwitch sw; + private final Logger log = getLogger(getClass()); + private final int refreshInterval; + + private Timeout timeout; + + private boolean stopTimer = false; + + /** + * Creates a GroupStatsCollector object. + * + * @param sw Open Flow switch + * @param interval time interval for collecting group statistic + */ + public GroupStatsCollector(OpenFlowSwitch sw, int interval) { + this.sw = sw; + this.refreshInterval = interval; + } + + @Override + public void run(Timeout timeout) throws Exception { + log.trace("Collecting stats for {}", sw.getStringId()); + + sendGroupStatistic(); + + if (!this.stopTimer) { + log.trace("Scheduling stats collection in {} seconds for {}", + this.refreshInterval, this.sw.getStringId()); + timeout.getTimer().newTimeout(this, refreshInterval, + TimeUnit.SECONDS); + } + } + + private void sendGroupStatistic() { + if (log.isTraceEnabled()) { + log.trace("sendGroupStatistics {}:{}", sw.getStringId(), sw.getRole()); + } + if (sw.getRole() != RoleState.MASTER) { + return; + } + Long statsXid = OpenFlowGroupProvider.getXidAndAdd(2); + OFGroupStatsRequest statsRequest = sw.factory().buildGroupStatsRequest() + .setGroup(OFGroup.ALL) + .setXid(statsXid) + .build(); + sw.sendMsg(statsRequest); + + Long descXid = statsXid + 1; + OFGroupDescStatsRequest descStatsRequest = + sw.factory().buildGroupDescStatsRequest() + .setXid(descXid) + .build(); + sw.sendMsg(descStatsRequest); + } + + /** + * Starts the collector. + */ + public void start() { + log.info("Starting Group Stats collection thread for {}", sw.getStringId()); + timeout = timer.newTimeout(this, 1, TimeUnit.SECONDS); + } + + /** + * Stops the collector. + */ + public void stop() { + log.info("Stopping Group Stats collection thread for {}", sw.getStringId()); + this.stopTimer = true; + timeout.cancel(); + } +} |