intent cycle command

Change-Id: Ia461ea960e3c47cedd2b9085762b48f08346be73

+/*
+ * 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.cli.net;
+
+import com.google.common.collect.Lists;
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onlab.packet.Ethernet;
+import org.onlab.packet.MacAddress;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.intent.Intent;
+import org.onosproject.net.intent.IntentEvent;
+import org.onosproject.net.intent.IntentEvent.Type;
+import org.onosproject.net.intent.IntentListener;
+import org.onosproject.net.intent.IntentService;
+import org.onosproject.net.intent.Key;
+import org.onosproject.net.intent.PointToPointIntent;
+
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.atomic.AtomicLong;
+
+import static org.onlab.util.Tools.delay;
+import static org.onosproject.net.DeviceId.deviceId;
+import static org.onosproject.net.PortNumber.portNumber;
+
+/**
+ * Installs point-to-point connectivity intents.
+ */
+@Command(scope = "onos", name = "cycle-intents",
+         description = "Installs random intents to test throughput")
+public class IntentCycleCommand extends AbstractShellCommand
+        implements IntentListener {
+
+    @Argument(index = 0, name = "ingressDevice",
+              description = "Ingress Device/Port Description",
+              required = true, multiValued = false)
+    String ingressDeviceString = null;
+
+    @Argument(index = 1, name = "egressDevice",
+              description = "Egress Device/Port Description",
+              required = true, multiValued = false)
+    String egressDeviceString = null;
+
+    @Argument(index = 2, name = "numberOfIntents",
+            description = "Number of intents to install/withdraw",
+            required = true, multiValued = false)
+    String numberOfIntents = null;
+
+    @Argument(index = 3, name = "keyOffset",
+            description = "Starting point for first key (default: 1)",
+            required = false, multiValued = false)
+    String keyOffsetStr = null;
+
+    private IntentService service;
+    private CountDownLatch latch;
+    private volatile long start, end;
+    private int count;
+    private int keyOffset;
+    private long submitCounter = 0;
+    private AtomicLong eventCounter = new AtomicLong(0);
+    private boolean add;
+
+    @Override
+    protected void execute() {
+        service = get(IntentService.class);
+
+
+        DeviceId ingressDeviceId = deviceId(getDeviceId(ingressDeviceString));
+        PortNumber ingressPortNumber = portNumber(getPortNumber(ingressDeviceString));
+        ConnectPoint ingress = new ConnectPoint(ingressDeviceId, ingressPortNumber);
+
+        DeviceId egressDeviceId = deviceId(getDeviceId(egressDeviceString));
+        PortNumber egressPortNumber = portNumber(getPortNumber(egressDeviceString));
+        ConnectPoint egress = new ConnectPoint(egressDeviceId, egressPortNumber);
+
+        count = Integer.parseInt(numberOfIntents);
+        keyOffset = (keyOffsetStr != null) ? Integer.parseInt(keyOffsetStr) : 1;
+
+        service.addListener(this);
+
+        List<Intent> operations = generateIntents(ingress, egress);
+
+        add = true;
+        start = System.currentTimeMillis();
+        while (start + 10000 > System.currentTimeMillis()) {
+            submitIntents(operations);
+        }
+        delay(5000);
+        printResults();
+
+        add = false;
+        submitIntents(operations);
+
+        service.removeListener(this);
+    }
+
+    private List<Intent> generateIntents(ConnectPoint ingress, ConnectPoint egress) {
+        TrafficSelector.Builder selectorBldr = DefaultTrafficSelector.builder()
+                .matchEthType(Ethernet.TYPE_IPV4);
+        TrafficTreatment treatment = DefaultTrafficTreatment.builder().build();
+
+        List<Intent> intents = Lists.newArrayList();
+        for (int i = 0; i < count; i++) {
+            TrafficSelector selector = selectorBldr
+                    .matchEthSrc(MacAddress.valueOf(i + keyOffset))
+                    .build();
+            intents.add(new PointToPointIntent(appId(), Key.of(i + keyOffset, appId()),
+                                               selector, treatment,
+                                               ingress, egress,
+                                               Collections.emptyList()));
+
+        }
+        return intents;
+    }
+
+    private void submitIntents(List<Intent> intents) {
+        for (Intent intent : intents) {
+            if (add) {
+                submitCounter++;
+                service.submit(intent);
+            } else {
+                service.withdraw(intent);
+            }
+        }
+    }
+
+    private void printResults() {
+        //long delta = end - start;
+        //String text = add ? "install" : "withdraw";
+        print("count: %s / %s", eventCounter, Long.valueOf(submitCounter));
+        //print("Time to %s %d intents: %d ms", text, count, delta);
+    }
+
+    /**
+     * Extracts the port number portion of the ConnectPoint.
+     *
+     * @param deviceString string representing the device/port
+     * @return port number as a string, empty string if the port is not found
+     */
+    private String getPortNumber(String deviceString) {
+        int slash = deviceString.indexOf('/');
+        if (slash <= 0) {
+            return "";
+        }
+        return deviceString.substring(slash + 1, deviceString.length());
+    }
+
+    /**
+     * Extracts the device ID portion of the ConnectPoint.
+     *
+     * @param deviceString string representing the device/port
+     * @return device ID string
+     */
+    private String getDeviceId(String deviceString) {
+        int slash = deviceString.indexOf('/');
+        if (slash <= 0) {
+            return "";
+        }
+        return deviceString.substring(0, slash);
+    }
+
+    private static final EnumSet<Type> IGNORE_EVENT
+            = EnumSet.of(Type.INSTALL_REQ, Type.WITHDRAW_REQ);
+    @Override
+    public synchronized void event(IntentEvent event) {
+        if (!appId().equals(event.subject().appId())) {
+            // not my event, ignore
+            return;
+        }
+        Type expected = add ? Type.INSTALLED : Type.WITHDRAWN;
+        if (event.type() == expected) {
+            eventCounter.getAndIncrement();
+        } else if (IGNORE_EVENT.contains(event.type())) {
+            log.info("Unexpected intent event: {}", event);
+        }
+    }
+}

@@ -209,6 +209,15 @@
             </completers>
         </command>
         <command>
+            <action class="org.onosproject.cli.net.IntentCycleCommand"/>
+            <completers>
+                <ref component-id="connectPointCompleter"/>
+                <ref component-id="connectPointCompleter"/>
+                <ref component-id="nullCompleter"/>
+                <null/>
+            </completers>
+        </command>
+        <command>
             <action class="org.onosproject.cli.net.RandomIntentCommand"/>
             <completers>
                 <ref component-id="nullCompleter"/>