Adding test apps as submodule to apps

Moving election and intent-perf there

Change-Id: Ia71e98438b33d3a1c5c12b08ae98c32930c4bd81

@@ -43,6 +43,7 @@
         <module>routing</module>
         <module>routing</module>
         <module>routing-api</module>
         <module>routing-api</module>
         <module>bgprouter</module>
         <module>bgprouter</module>
+        <module>test</module>
     </modules>
     </modules>
 
 
     <properties>
     <properties>

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2014 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-app-samples</artifactId>
+        <version>1.2.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-app-election</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS app leadership election test</description>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-api</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+            <classifier>tests</classifier>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-cli</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.karaf.shell</groupId>
+            <artifactId>org.apache.karaf.shell.console</artifactId>
+        </dependency>
+
+    </dependencies>
+
+</project>

+/*
+ * Copyright 2014 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.election;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.core.CoreService;
+import org.onosproject.cluster.ControllerNode;
+import org.onosproject.cluster.LeadershipEvent;
+import org.onosproject.cluster.LeadershipEventListener;
+import org.onosproject.cluster.LeadershipService;
+import org.onosproject.core.ApplicationId;
+
+import org.slf4j.Logger;
+
+
+/**
+ * Simple application to test leadership election.
+ */
+@Component(immediate = true)
+public class ElectionTest {
+
+    private final Logger log = getLogger(getClass());
+
+    private static final String ELECTION_APP = "org.onosproject.election";
+    private ApplicationId appId;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ClusterService clusterService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected LeadershipService leadershipService;
+
+    private LeadershipEventListener leadershipEventListener =
+            new InnerLeadershipEventListener();
+
+    private ControllerNode localControllerNode;
+
+
+    @Activate
+    protected void activate() {
+        log.info("Election-test app started");
+
+        appId = coreService.registerApplication(ELECTION_APP);
+
+        localControllerNode = clusterService.getLocalNode();
+
+        leadershipService.addListener(leadershipEventListener);
+        leadershipService.runForLeadership(appId.name());
+    }
+
+    @Deactivate
+    protected void deactivate() {
+
+        leadershipService.withdraw(appId.name());
+        leadershipService.removeListener(leadershipEventListener);
+
+        log.info("Election-test app Stopped");
+    }
+
+    /**
+     * A listener for Leadership Events.
+     */
+    private class InnerLeadershipEventListener
+            implements LeadershipEventListener {
+
+        @Override
+        public void event(LeadershipEvent event) {
+
+
+            if (!event.subject().topic().equals(appId.name())) {
+                return;         // Not our topic: ignore
+            }
+
+            //only log what pertains to us
+            log.debug("Leadership Event: time = {} type = {} event = {}",
+                    event.time(), event.type(), event);
+
+            if (!event.subject().leader().equals(
+                    localControllerNode.id())) {
+                return;         // The event is not about this instance: ignore
+            }
+
+            switch (event.type()) {
+                case LEADER_ELECTED:
+                    log.info("Election-test app leader elected");
+                    break;
+                case LEADER_BOOTED:
+                    log.info("Election-test app lost election");
+                    break;
+                case LEADER_REELECTED:
+                    log.debug("Election-test app was re-elected");
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
+}

+/*
+ * Copyright 2014 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.election.cli;
+
+import org.onosproject.cluster.NodeId;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cluster.LeadershipService;
+
+/**
+ * CLI command to get the current leader for the Election test application.
+ */
+@Command(scope = "onos", name = "election-test-leader",
+        description = "Get the current leader for the Election test application")
+public class ElectionTestLeaderCommand extends AbstractShellCommand {
+
+    private NodeId leader;
+    private static final String ELECTION_APP = "org.onosproject.election";
+
+    @Override
+    protected void execute() {
+        LeadershipService service = get(LeadershipService.class);
+
+        //print the current leader
+        leader = service.getLeader(ELECTION_APP);
+        printLeader(leader);
+    }
+
+    /**
+     * Prints the leader.
+     *
+     * @param leader the leader to print
+     */
+    private void printLeader(NodeId leader) {
+        if (leader != null) {
+            print("The current leader for the Election app is %s.", leader);
+        } else {
+            print("There is currently no leader elected for the Election app");
+        }
+    }
+}

+/*
+ * Copyright 2014 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.election.cli;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cluster.LeadershipService;
+
+/**
+ * CLI command to run for leadership of the Election test application.
+ */
+@Command(scope = "onos", name = "election-test-run",
+        description = "Run for leader of the Election test application")
+public class ElectionTestRunCommand extends AbstractShellCommand {
+
+    private static final String ELECTION_APP = "org.onosproject.election";
+
+    @Override
+    protected void execute() {
+        LeadershipService service = get(LeadershipService.class);
+
+        service.runForLeadership(ELECTION_APP);
+        //print the current leader
+        print("Entering leadership elections for the Election app.");
+    }
+}

+/*
+ * Copyright 2014 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.election.cli;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cluster.LeadershipService;
+
+/**
+ * CLI command to withdraw the local node from leadership election for
+ * the Election test application.
+ */
+@Command(scope = "onos", name = "election-test-withdraw",
+        description = "Withdraw node from leadership election for the Election test application")
+public class ElectionTestWithdrawCommand extends AbstractShellCommand {
+
+    private static final String ELECTION_APP = "org.onosproject.election";
+
+    @Override
+    protected void execute() {
+        LeadershipService service = get(LeadershipService.class);
+
+        service.withdraw(ELECTION_APP);
+        //print the current leader
+        print("Withdrawing from leadership elections for the Election app.");
+    }
+}

+/*
+ * Copyright 2014 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.
+ */
+
+/**
+ * Election test command-line handlers.
+ */
+package org.onosproject.election.cli;
\ No newline at end of file

+/*
+ * Copyright 2014 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.
+ */
+
+/**
+ * Sample application for use in various experiments.
+ */
+package org.onosproject.election;

+<!--
+  ~ Copyright 2014 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.
+  -->
+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
+
+    <command-bundle xmlns="http://karaf.apache.org/xmlns/shell/v1.1.0">
+        <command>
+            <action class="org.onosproject.election.cli.ElectionTestLeaderCommand"/>
+        </command>
+        <command>
+            <action class="org.onosproject.election.cli.ElectionTestRunCommand"/>
+        </command>
+        <command>
+            <action class="org.onosproject.election.cli.ElectionTestWithdrawCommand"/>
+        </command>
+    </command-bundle>
+
+</blueprint>

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-app-samples</artifactId>
+        <version>1.2.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-app-intent-perf</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS intent perf app bundle</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.karaf.shell</groupId>
+            <artifactId>org.apache.karaf.shell.console</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-cli</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>org.osgi.compendium</artifactId>
+        </dependency>
+        <!-- Required for javadoc generation -->
+        <dependency>
+           <groupId>org.osgi</groupId>
+           <artifactId>org.osgi.core</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>2.5.3</version>
+                <configuration>
+                    <descriptor>src/assembly/bin.xml</descriptor>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+<app name="org.onosproject.intentperf" origin="ON.Lab" version="1.2.0"
+     features="onos-app-intent-perf">
+    <description>Intent performance application</description>
+</app>
\ No newline at end of file

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+<assembly
+        xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+    <formats>
+        <format>zip</format>
+    </formats>
+    <id>onos</id>
+    <includeBaseDirectory>false</includeBaseDirectory>
+    <files>
+        <file>
+            <source>src/assembly/app.xml</source>
+            <destName>app.xml</destName>
+        </file>
+        <file>
+            <source>target/${project.artifactId}-${project.version}.jar</source>
+            <destName>m2/org/onosproject/${project.artifactId}/${project.version}/${project.artifactId}-${project.version}.jar</destName>
+        </file>
+    </files>
+</assembly>
\ No newline at end of file

+/*
+ * 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.intentperf;
+
+import com.google.common.collect.ImmutableList;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.ControllerNode;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
+import org.onosproject.store.cluster.messaging.ClusterMessage;
+import org.onosproject.store.cluster.messaging.ClusterMessageHandler;
+import org.onosproject.store.cluster.messaging.MessageSubject;
+import org.slf4j.Logger;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import static org.onlab.util.Tools.groupedThreads;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Collects and distributes performance samples.
+ */
+@Component(immediate = true)
+@Service(value = IntentPerfCollector.class)
+public class IntentPerfCollector {
+
+    private static final long SAMPLE_TIME_WINDOW_MS = 5_000;
+    private final Logger log = getLogger(getClass());
+
+    private static final int MAX_SAMPLES = 1_000;
+
+    private final List<Sample> samples = new LinkedList<>();
+
+    private static final MessageSubject SAMPLE = new MessageSubject("intent-perf-sample");
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ClusterCommunicationService communicationService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ClusterService clusterService;
+
+    @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY)
+    protected IntentPerfUi ui;
+
+    // Auxiliary structures used to accrue data for normalized time interval
+    // across all nodes.
+    private long newestTime;
+    private Sample overall;
+    private Sample current;
+
+    private ControllerNode[] nodes;
+    private Map<NodeId, Integer> nodeToIndex;
+
+    private NodeId nodeId;
+    private ExecutorService messageHandlingExecutor;
+
+    @Activate
+    public void activate() {
+        nodeId = clusterService.getLocalNode().id();
+
+        // TODO: replace with shared executor
+        messageHandlingExecutor = Executors.newSingleThreadExecutor(
+                groupedThreads("onos/perf", "message-handler"));
+
+        communicationService.addSubscriber(SAMPLE, new InternalSampleCollector(),
+                                           messageHandlingExecutor);
+
+        nodes = clusterService.getNodes().toArray(new ControllerNode[]{});
+        Arrays.sort(nodes, (a, b) -> a.id().toString().compareTo(b.id().toString()));
+
+        nodeToIndex = new HashMap<>();
+        for (int i = 0; i < nodes.length; i++) {
+            nodeToIndex.put(nodes[i].id(), i);
+        }
+
+        clearSamples();
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        messageHandlingExecutor.shutdown();
+        communicationService.removeSubscriber(SAMPLE);
+        log.info("Stopped");
+    }
+
+    /**
+     * Clears all previously accumulated data.
+     */
+    public void clearSamples() {
+        newestTime = 0;
+        overall = new Sample(0, nodes.length);
+        current = new Sample(0, nodes.length);
+        samples.clear();
+    }
+
+
+    /**
+     * Records a sample point of data about intent operation rate.
+     *
+     * @param overallRate overall rate
+     * @param currentRate current rate
+     */
+    public void recordSample(double overallRate, double currentRate) {
+        long now = System.currentTimeMillis();
+        addSample(now, nodeId, overallRate, currentRate);
+        broadcastSample(now, nodeId, overallRate, currentRate);
+    }
+
+    /**
+     * Returns set of node ids as headers.
+     *
+     * @return node id headers
+     */
+    public List<String> getSampleHeaders() {
+        List<String> headers = new ArrayList<>();
+        for (ControllerNode node : nodes) {
+            headers.add(node.id().toString());
+        }
+        return headers;
+    }
+
+    /**
+     * Returns set of all accumulated samples normalized to the local set of
+     * samples.
+     *
+     * @return accumulated samples
+     */
+    public synchronized List<Sample> getSamples() {
+        return ImmutableList.copyOf(samples);
+    }
+
+    /**
+     * Returns overall throughput performance for each of the cluster nodes.
+     *
+     * @return overall intent throughput
+     */
+    public synchronized Sample getOverall() {
+        return overall;
+    }
+
+    // Records a new sample to our collection of samples
+    private synchronized void addSample(long time, NodeId nodeId,
+                                        double overallRate, double currentRate) {
+        Sample fullSample = createCurrentSampleIfNeeded(time);
+        setSampleData(current, nodeId, currentRate);
+        setSampleData(overall, nodeId, overallRate);
+        pruneSamplesIfNeeded();
+
+        if (fullSample != null && ui != null) {
+            ui.reportSample(fullSample);
+        }
+    }
+
+    private Sample createCurrentSampleIfNeeded(long time) {
+        Sample oldSample = time - newestTime > SAMPLE_TIME_WINDOW_MS || current.isComplete() ? current : null;
+        if (oldSample != null) {
+            newestTime = time;
+            current = new Sample(time, nodes.length);
+            if (oldSample.time > 0) {
+                samples.add(oldSample);
+            }
+        }
+        return oldSample;
+    }
+
+    private void setSampleData(Sample sample, NodeId nodeId, double data) {
+        Integer index = nodeToIndex.get(nodeId);
+        if (index != null) {
+            sample.data[index] = data;
+        }
+    }
+
+    private void pruneSamplesIfNeeded() {
+        if (samples.size() > MAX_SAMPLES) {
+            samples.remove(0);
+        }
+    }
+
+    // Performance data sample.
+    static class Sample {
+        final long time;
+        final double[] data;
+
+        public Sample(long time, int nodeCount) {
+            this.time = time;
+            this.data = new double[nodeCount];
+            Arrays.fill(data, -1);
+        }
+
+        public boolean isComplete() {
+            for (int i = 0; i < data.length; i++) {
+                if (data[i] < 0) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    }
+
+    private void broadcastSample(long time, NodeId nodeId, double overallRate, double currentRate) {
+        String data = String.format("%d|%f|%f", time, overallRate, currentRate);
+        communicationService.broadcast(new ClusterMessage(nodeId, SAMPLE, data.getBytes()));
+    }
+
+    private class InternalSampleCollector implements ClusterMessageHandler {
+        @Override
+        public void handle(ClusterMessage message) {
+            String[] fields = new String(message.payload()).split("\\|");
+            log.debug("Received sample from {}: {}", message.sender(), fields);
+            addSample(Long.parseLong(fields[0]), message.sender(),
+                      Double.parseDouble(fields[1]), Double.parseDouble(fields[2]));
+        }
+    }
+}

+/*
+ * 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.intentperf;
+
+import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.commands.Option;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.intentperf.IntentPerfCollector.Sample;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * Displays accumulated performance metrics.
+ */
+@Command(scope = "onos", name = "intent-perf",
+        description = "Displays accumulated performance metrics")
+public class IntentPerfListCommand extends AbstractShellCommand {
+
+    @Option(name = "-s", aliases = "--summary", description = "Output just summary",
+            required = false, multiValued = false)
+    private boolean summary = false;
+
+    @Override
+    protected void execute() {
+        if (summary) {
+            printSummary();
+        } else {
+            printSamples();
+        }
+    }
+
+    private void printSummary() {
+        IntentPerfCollector collector = get(IntentPerfCollector.class);
+        List<String> headers = collector.getSampleHeaders();
+        Sample overall = collector.getOverall();
+        double total = 0;
+        print("%12s: %14s", "Node ID", "Overall Rate");
+        for (int i = 0; i < overall.data.length; i++) {
+            if (overall.data[i] >= 0) {
+                print("%12s: %14.2f", headers.get(i), overall.data[i]);
+                total += overall.data[i];
+            } else {
+                print("%12s: %14s", headers.get(i), " ");
+            }
+        }
+        print("%12s: %14.2f", "total", total);
+    }
+
+    private void printSamples() {
+        IntentPerfCollector collector = get(IntentPerfCollector.class);
+        List<String> headers = collector.getSampleHeaders();
+        List<Sample> samples = collector.getSamples();
+
+        System.out.print(String.format("%10s  ", "Time"));
+        for (String header : headers) {
+            System.out.print(String.format("%12s  ", header));
+        }
+        System.out.println(String.format("%12s", "Total"));
+
+        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
+        for (Sample sample : samples) {
+            double total = 0;
+            System.out.print(String.format("%10s  ", sdf.format(new Date(sample.time))));
+            for (int i = 0; i < sample.data.length; i++) {
+                if (sample.data[i] >= 0) {
+                    System.out.print(String.format("%12.2f  ", sample.data[i]));
+                    total += sample.data[i];
+                } else {
+                    System.out.print(String.format("%12s  ", " "));
+                }
+            }
+            System.out.println(String.format("%12.2f", total));
+        }
+    }
+
+}

+/*
+ * 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.intentperf;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+
+/**
+ * Starts intent performance test run.
+ */
+@Command(scope = "onos", name = "intent-perf-start",
+        description = "Starts intent performance test run")
+public class IntentPerfStartCommand extends AbstractShellCommand {
+
+    @Override
+    protected void execute() {
+        get(IntentPerfInstaller.class).start();
+    }
+
+}

+/*
+ * 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.intentperf;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+
+/**
+ * Stops intent performance test run.
+ */
+@Command(scope = "onos", name = "intent-perf-stop",
+        description = "Stops intent performance test run")
+public class IntentPerfStopCommand extends AbstractShellCommand {
+
+    @Override
+    protected void execute() {
+        get(IntentPerfInstaller.class).stop();
+    }
+
+}

+/*
+ * 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.intentperf;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onlab.osgi.ServiceDirectory;
+import org.onosproject.intentperf.IntentPerfCollector.Sample;
+import org.onosproject.ui.UiConnection;
+import org.onosproject.ui.UiExtension;
+import org.onosproject.ui.UiExtensionService;
+import org.onosproject.ui.UiMessageHandler;
+import org.onosproject.ui.UiView;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import static java.util.Collections.synchronizedSet;
+
+/**
+ * Mechanism to stream data to the GUI.
+ */
+@Component(immediate = true, enabled = false)
+public class IntentPerfUi {
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected UiExtensionService uiExtensionService;
+
+    private final Set<StreamingControl> handlers = synchronizedSet(new HashSet<>());
+
+    private List<UiView> views = ImmutableList.of(new UiView("intentPerf", "Intent Performance"));
+    private UiExtension uiExtension = new UiExtension(views, this::newHandlers,
+                                                      getClass().getClassLoader());
+
+    @Activate
+    protected void activate() {
+        uiExtensionService.register(uiExtension);
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        uiExtensionService.unregister(uiExtension);
+    }
+
+    /**
+     * Reports a single sample of performance data.
+     *
+     * @param sample performance sample
+     */
+    public void reportSample(Sample sample) {
+        synchronized (handlers) {
+            handlers.forEach(h -> h.send(sample));
+        }
+    }
+
+    // Creates and returns session specific message handler.
+    private Collection<UiMessageHandler> newHandlers() {
+        return ImmutableList.of(new StreamingControl());
+    }
+
+    // UI Message handlers for turning on/off reporting to a session.
+    private class StreamingControl extends UiMessageHandler {
+
+        private boolean streamingEnabled = false;
+
+        protected StreamingControl() {
+            super(ImmutableSet.of("intentPerfStart", "intentPerfStop"));
+        }
+
+        @Override
+        public void process(ObjectNode message) {
+            streamingEnabled = message.path("event").asText("unknown").equals("initPerfStart");
+        }
+
+        @Override
+        public void init(UiConnection connection, ServiceDirectory directory) {
+            super.init(connection, directory);
+            handlers.add(this);
+        }
+
+        @Override
+        public void destroy() {
+            super.destroy();
+            handlers.remove(this);
+        }
+
+        private void send(Sample sample) {
+            // FIXME: finish this
+            ObjectNode sn = mapper.createObjectNode()
+                    .put("time", sample.time);
+            connection().sendMessage("intentPerf", 0, sn);
+        }
+    }
+
+}

+/*
+ * 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.
+ */
+
+/**
+ * Performance test application that induces steady load on the intent subsystem.
+ */
+package org.onosproject.intentperf;
\ No newline at end of file

+<!--
+  ~ 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.
+  -->
+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
+    <command-bundle xmlns="http://karaf.apache.org/xmlns/shell/v1.1.0">
+        <command>
+            <action class="org.onosproject.intentperf.IntentPerfListCommand"/>
+        </command>
+        <command>
+            <action class="org.onosproject.intentperf.IntentPerfStartCommand"/>
+        </command>
+        <command>
+            <action class="org.onosproject.intentperf.IntentPerfStopCommand"/>
+        </command>
+    </command-bundle>
+</blueprint>

+date,value,node
+00:55:15,68.38,node1
+00:55:15,55.61,node2
+00:55:15,74.00,node3
+00:55:30,74.20,node1
+00:55:30,77.60,node2
+00:55:30,74.80,node3
+00:55:45,74.60,node1
+00:55:45,72.80,node2
+00:55:45,77.00,node3
+00:56:00,73.60,node1
+00:56:00,75.00,node2
+00:56:00,76.98,node3
+00:56:15,75.82,node1
+00:56:15,75.40,node2
+00:56:15,76.00,node3
+00:56:30,75.60,node1
+00:56:30,74.59,node2
+00:56:30,74.01,node3
\ No newline at end of file

+key,value,date
+Group1,37,00:23:00
+Group2,12,00:23:00
+Group3,46,00:23:00
+Group1,32,00:23:05
+Group2,19,00:23:05
+Group3,42,00:23:05
+Group1,45,00:23:10
+Group2,16,00:23:10
+Group3,44,00:23:10
+Group1,24,00:23:15
+Group2,52,00:23:15
+Group3,64,00:23:15
+Group1,34,00:23:20
+Group2,62,00:23:20
+Group3,74,00:23:20
+Group1,34,00:23:25
+Group2,62,00:23:25
+Group3,74,00:23:25
\ No newline at end of file

+/*
+ * 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.
+ */
+
+/*
+ ONOS GUI -- Intent Perf View -- CSS file
+ */
+
+.light #ov-intentPerf {
+    color: navy;
+}
+
+.dark #ov-intentPerf {
+    color: #1e5e6f;
+}
+
+.dark a {
+    color: #88c;
+}
+
+#ov-intentPerf .msg {
+    color: darkorange;
+}
+
+.light #ov-intentPerf .msg {
+    color: darkorange;
+}
+
+.dark #ov-intentPerf .msg {
+    color: #904e00;
+}
+
+
+
+.axis path,
+.axis line {
+    fill: none;
+    stroke: #000;
+    shape-rendering: crispEdges;
+}
+
+.browser text {
+    text-anchor: end;
+}

+<!--
+  ~ 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.
+  -->
+
+<!-- Intent Performance partial HTML -->
+<div id="ov-sample">
+    <h2> Intent Performance View </h2>
+
+    <span class="msg">{{ ctrl.message }}</span>
+
+    <div id="intent-perf-chart"></div>
+</div>

+/*
+ * 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.
+ */
+
+/*
+ ONOS GUI -- Intent Performance View Module
+ */
+(function () {
+    'use strict';
+
+    // injected refs
+    var $log, tbs, flash;
+
+    function start() {
+        //var format = d3.time.format("%m/%d/%y");
+        var format = d3.time.format("%H:%M:%S");
+        var samples = [];
+
+        var margin = {top: 20, right: 30, bottom: 30, left: 40},
+            width = 960 - margin.left - margin.right,
+            height = 500 - margin.top - margin.bottom;
+
+        var x = d3.time.scale()
+            .range([0, width]);
+
+        var y = d3.scale.linear()
+            .range([height, 0]);
+
+        var z = d3.scale.category20c();
+
+        var xAxis = d3.svg.axis()
+            .scale(x)
+            .orient("bottom")
+            .ticks(d3.time.seconds);
+
+        var yAxis = d3.svg.axis()
+            .scale(y)
+            .orient("left");
+
+        var stack = d3.layout.stack()
+            .offset("zero")
+            .values(function(d) { return d.values; })
+            .x(function(d) { return d.date; })
+            .y(function(d) { return d.value; });
+
+        var nest = d3.nest()
+            .key(function(d) { return d.key; });
+
+        var area = d3.svg.area()
+            .interpolate("cardinal")
+            .x(function(d) { return x(d.date); })
+            .y0(function(d) { return y(d.y0); })
+            .y1(function(d) { return y(d.y0 + d.y); });
+
+        var svg = d3.select("body").append("svg")
+            .attr("width", width + margin.left + margin.right)
+            .attr("height", height + margin.top + margin.bottom)
+            .append("g")
+            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
+
+        svg.append("g")
+            .attr("class", "x axis")
+            .attr("transform", "translate(0," + height + ")")
+            .call(xAxis);
+
+        svg.append("g")
+            .attr("class", "y axis")
+            .call(yAxis);
+
+        function fetchData() {
+            d3.csv("app/view/intentPerf/data.csv", function (data) {
+                samples = data;
+                updateGraph();
+            });
+        }
+
+        function updateGraph() {
+            samples.forEach(function(d) {
+                d.date = format.parse(d.date);
+                d.value = +d.value;
+            });
+
+            var layers = stack(nest.entries(samples));
+
+            x.domain(d3.extent(samples, function(d) { return d.date; }));
+            y.domain([0, d3.max(samples, function(d) { return d.y0 + d.y; })]);
+
+            svg.selectAll(".layer")
+                .data(layers)
+                .enter().append("path")
+                .attr("class", "layer")
+                .attr("d", function(d) { return area(d.values); })
+                .style("fill", function(d, i) { return z(i); });
+
+            svg.select(".x")
+                .attr("transform", "translate(0," + height + ")")
+                .call(xAxis);
+
+            svg.select(".y")
+                .call(yAxis);
+
+            console.log('tick');
+        }
+    }
+
+    start();
+
+    // define the controller
+
+    angular.module('ovIntentPerf', ['onosUtil'])
+    .controller('OvIntentPerfCtrl',
+        ['$scope', '$log', 'ToolbarService', 'FlashService',
+
+        function ($scope, _$log_, _tbs_, _flash_) {
+            var self = this
+
+            $log = _$log_;
+            tbs = _tbs_;
+            flash = _flash_;
+
+            self.message = 'Hey there dudes!';
+            start();
+
+            // Clean up on destroyed scope
+            $scope.$on('$destroy', function () {
+            });
+
+         $log.log('OvIntentPerfCtrl has been created');
+    }]);
+}());

+<link rel="stylesheet" href="app/view/intentPerf/intentPerf.css">

+<!DOCTYPE html>
+<!--
+  ~ Copyright 2014 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.
+  -->
+<html>
+<head>
+    <title>Dev View</title>
+    <script src="tp/d3.min.js"></script>
+    <script src="tp/jquery-2.1.1.min.js"></script>
+
+    <link rel="stylesheet" href="app/view/intentPerf/intentPerf.css">
+</head>
+<body>
+<div id="intent-perf-chart" style="width: 1024px; height: 800px"></div>
+<script src="app/view/intentPerf/intentPerf.js"></script>
+</body>
+</html>
\ No newline at end of file

+<script src="app/view/intentPerf/intentPerf.js"></script>

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos</artifactId>
+        <version>1.2.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-apps-test</artifactId>
+    <packaging>pom</packaging>
+
+    <description>ONOS test applications</description>
+
+    <modules>
+        <module>election</module>
+        <module>intent-perf</module>
+    </modules>
+
+</project>