ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60

Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd

1 files changed, 194 insertions, 0 deletions

diff --git a/framework/src/onos/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java b/framework/src/onos/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java
new file mode 100644
index 00000000..a44ead57
--- /dev/null
+++ b/framework/src/onos/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfUi.java
@@ -0,0 +1,194 @@
+/*
+ * 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.ArrayNode;
+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.apache.felix.scr.annotations.Service;
+import org.onlab.osgi.ServiceDirectory;
+import org.onosproject.intentperf.IntentPerfCollector.Sample;
+import org.onosproject.ui.RequestHandler;
+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;
+import static org.onosproject.ui.UiView.Category.OTHER;
+
+/**
+ * Mechanism to stream data to the GUI.
+ */
+@Component(immediate = true, enabled = true)
+@Service(value = IntentPerfUi.class)
+public class IntentPerfUi {
+
+    private static final String INTENT_PERF_START = "intentPerfStart";
+    private static final String INTENT_PERF_STOP = "intentPerfStop";
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected UiExtensionService uiExtensionService;
+
+    private final Set<StreamingControl> handlers = synchronizedSet(new HashSet<>());
+
+    private List<UiView> views = ImmutableList.of(
+            new UiView(OTHER, "intentPerf", "Intent Performance")
+    );
+
+    private UiExtension uiExtension =
+            new UiExtension.Builder(getClass().getClassLoader(), views)
+                .messageHandlerFactory(this::newHandlers)
+                .build();
+
+    private IntentPerfCollector collector;
+
+    @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));
+        }
+    }
+
+    /**
+     * Binds the sample collector.
+     *
+     * @param collector list of headers for future samples
+     */
+    public void setCollector(IntentPerfCollector collector) {
+        this.collector = collector;
+    }
+
+    // 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;
+
+        @Override
+        protected Collection<RequestHandler> createRequestHandlers() {
+            return ImmutableSet.of(
+                    new IntentPerfStart(),
+                    new IntentPerfStop()
+            );
+        }
+
+        @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) {
+            if (streamingEnabled) {
+                connection().sendMessage("intentPerfSample", 0, sampleNode(sample));
+            }
+        }
+
+
+        private ObjectNode sampleNode(Sample sample) {
+            ObjectNode sampleNode = objectNode();
+            ArrayNode an = arrayNode();
+            sampleNode.put("time", sample.time);
+            sampleNode.set("data", an);
+
+            for (double d : sample.data) {
+                an.add(d);
+            }
+            return sampleNode;
+        }
+
+        // ======================================================================
+
+        private final class IntentPerfStart extends RequestHandler {
+
+            private IntentPerfStart() {
+                super(INTENT_PERF_START);
+            }
+
+            @Override
+            public void process(long sid, ObjectNode payload) {
+                streamingEnabled = true;
+                sendInitData();
+            }
+
+            private void sendInitData() {
+                ObjectNode rootNode = MAPPER.createObjectNode();
+                ArrayNode an = MAPPER.createArrayNode();
+                ArrayNode sn = MAPPER.createArrayNode();
+                rootNode.set("headers", an);
+                rootNode.set("samples", sn);
+
+                collector.getSampleHeaders().forEach(an::add);
+                collector.getSamples().forEach(s -> sn.add(sampleNode(s)));
+                sendMessage("intentPerfInit", 0, rootNode);
+            }
+        }
+
+        // ======================================================================
+
+        private final class IntentPerfStop extends RequestHandler {
+
+            private IntentPerfStop() {
+                super(INTENT_PERF_STOP);
+            }
+
+            @Override
+            public void process(long sid, ObjectNode payload) {
+                streamingEnabled = false;
+            }
+        }
+
+    }
+
+}