ONOS-1440: Implements port statistics feature, which polls port statistics of all devices every 10 seconds. Also, implemented a simple portstats ONOS CLI command to show the statistics.
Change-Id: I57e046ae2c2463a58b478d3a5b523422cde71ba2
diff --git a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java
new file mode 100644
index 0000000..36d7948
--- /dev/null
+++ b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java
@@ -0,0 +1,107 @@
+/*
+ * 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 final int refreshInterval;
+ private final AtomicLong xidAtomic = new AtomicLong(1);
+
+ 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 PortStatsCollector(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());
+
+ sendPortStatistic();
+
+ 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 sendPortStatistic() {
+ if (log.isTraceEnabled()) {
+ log.trace("sendGroupStatistics {}:{}", sw.getStringId(), sw.getRole());
+ }
+ 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 void start() {
+ log.info("Starting Port Stats collection thread for {}", sw.getStringId());
+ timeout = timer.newTimeout(this, 1, TimeUnit.SECONDS);
+ }
+
+ /**
+ * Stops the collector.
+ */
+ public void stop() {
+ log.info("Stopping Port Stats collection thread for {}", sw.getStringId());
+ this.stopTimer = true;
+ timeout.cancel();
+ }
+}