[ONOS-3851] Add skeletal code of Web GUI for Control Plane Manager

Change-Id: I0df9c55daec0b6d9a630aa954808e6c310ba861c

+/*
+ * Copyright 2016 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.cpman.gui;
+
+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.ui.UiExtension;
+import org.onosproject.ui.UiExtensionService;
+import org.onosproject.ui.UiMessageHandlerFactory;
+import org.onosproject.ui.UiView;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+
+import static org.onosproject.ui.UiView.Category.NETWORK;
+
+/**
+ * Mechanism to stream data to the GUI.
+ */
+@Component(immediate = true, enabled = true)
+@Service(value = CpmanUI.class)
+public class CpmanUI {
+    private static final String CPMAN_ID = "cpman";
+    private static final String CPMAN_TEXT = "Control Plane Manager";
+    private static final String RES_PATH = "gui";
+    private static final ClassLoader CL = CpmanUI.class.getClassLoader();
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected UiExtensionService uiExtensionService;
+
+    // Factory for UI message handlers
+    private final UiMessageHandlerFactory messageHandlerFactory =
+            () -> ImmutableList.of(new CpmanViewMessageHandler());
+
+    // List of application views
+    private final List<UiView> views = ImmutableList.of(
+            new UiView(NETWORK, CPMAN_ID, CPMAN_TEXT)
+    );
+
+    // Application UI extension
+    private final UiExtension uiExtension =
+            new UiExtension.Builder(CL, views)
+                    .messageHandlerFactory(messageHandlerFactory)
+                    .resourcePath(RES_PATH)
+                    .build();
+
+    @Activate
+    protected void activate() {
+        uiExtensionService.register(uiExtension);
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        uiExtensionService.unregister(uiExtension);
+        log.info("Stopped");
+    }
+}

+/*
+ * Copyright 2016 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.cpman.gui;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.ImmutableSet;
+import org.onosproject.ui.RequestHandler;
+import org.onosproject.ui.UiMessageHandler;
+
+import java.util.Collection;
+import java.util.Random;
+
+/**
+ * CpmanViewMessageHandler class implementation.
+ */
+public class CpmanViewMessageHandler extends UiMessageHandler {
+
+    private static final String CPMAN_DATA_REQ = "cpmanDataRequest";
+    private static final String CPMAN_DATA_RESP = "cpmanDataResponse";
+
+    private static final String RANDOM = "random";
+
+    @Override
+    protected Collection<RequestHandler> createRequestHandlers() {
+        return ImmutableSet.of(
+                new CpmanDataRequestHandler()
+        );
+    }
+
+    // handler for sample data requests
+    private final class CpmanDataRequestHandler extends RequestHandler {
+
+        private CpmanDataRequestHandler() {
+            super(CPMAN_DATA_REQ);
+        }
+
+        @Override
+        public void process(long sid, ObjectNode payload) {
+            ObjectNode result = objectNode();
+            Random random = new Random();
+            result.put(RANDOM, random.nextInt(50) + 1);
+
+            sendMessage(CPMAN_DATA_RESP, 0, result);
+        }
+    }
+}

+/*
+ * Copyright 2016 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.
+ */
+
+/**
+ * Web GUI for the control plane manager.
+ */
+package org.onosproject.cpman.gui;
\ No newline at end of file

+/*
+ * Copyright 2016 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 -- Control Plane Manager -- CSS file
+ */
+
+#ov-cpman {
+    padding: 20px;
+}
+.light #ov-cpman {
+    color: navy;
+}
+.dark #ov-cpman {
+    color: #88f;
+}
+
+#ov-cpman .button-panel {
+    margin: 10px;
+    width: 200px;
+}
+
+.light #ov-cpman .button-panel {
+    background-color: #ccf;
+}
+.dark #ov-cpman .button-panel {
+    background-color: #444;
+}
+
+#ov-cpman .my-button {
+    cursor: pointer;
+    padding: 4px;
+    text-align: center;
+}
+
+.light #ov-cpman .my-button {
+    color: white;
+    background-color: #99d;
+}
+.dark #ov-cpman .my-button {
+    color: black;
+    background-color: #aaa;
+}
+
+#ov-cpman .number {
+    font-size: 140%;
+    text-align: right;
+}
\ No newline at end of file

+<!-- partial HTML -->
+<div id="ov-cpman">
+    <div class="button-panel">
+        <div class="my-button" ng-click="getData()">
+            Fetch Data
+        </div>
+    </div>
+
+    <div class="data-panel">
+        <table>
+            <tr>
+                <td> Number </td>
+                <td class="number"> {{data.random}} </td>
+            </tr>
+        </table>
+    </div>
+</div>

+/*
+ * Copyright 2016 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 -- Control Plane Manager View Module
+ */
+(function () {
+    'use strict';
+
+    // injected refs
+    var $log, $scope, wss, ks;
+
+    // constants
+    var dataReq = 'cpmanDataRequest',
+        dataResp = 'cpmanDataResponse';
+
+    function addKeyBindings() {
+        var map = {
+            space: [getData, 'Fetch data from server'],
+
+            _helpFormat: [
+                ['space']
+            ]
+        };
+
+        ks.keyBindings(map);
+    }
+
+    function getData() {
+        wss.sendEvent(dataReq);
+    }
+
+    function respDataCb(data) {
+        $scope.data = data;
+        $scope.$apply();
+    }
+
+
+    angular.module('ovCpman', [])
+        .controller('OvCpmanCtrl',
+        ['$log', '$scope', 'WebSocketService', 'KeyService',
+
+        function (_$log_, _$scope_, _wss_, _ks_) {
+            $log = _$log_;
+            $scope = _$scope_;
+            wss = _wss_;
+            ks = _ks_;
+
+            var handlers = {};
+            $scope.data = {};
+
+            // data response handler
+            handlers[dataResp] = respDataCb;
+            wss.bindHandlers(handlers);
+
+            addKeyBindings();
+
+            // custom click handler
+            $scope.getData = getData;
+
+            // get data the first time...
+            getData();
+
+            // cleanup
+            $scope.$on('$destroy', function () {
+                wss.unbindHandlers(handlers);
+                ks.unbindKeys();
+                $log.log('OvCpmanCtrl has been destroyed');
+            });
+
+            $log.log('OvCpmanCtrl has been created');
+        }]);
+
+}());

+<link rel="stylesheet" href="app/view/cpman/cpman.css">
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+<script src="app/view/cpman/cpman.js"></script>
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