ONOS-1820 - GUI -- Base port stats view created. Navigate to it using device or topo view.

Change-Id: I87b1caea74dc4974b0a4fd1fdde7b7bd3269ca86
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/PortViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/PortViewMessageHandler.java
new file mode 100644
index 0000000..796207c
--- /dev/null
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/PortViewMessageHandler.java
@@ -0,0 +1,110 @@
+/*
+ * 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.ui.impl;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.base.Strings;
+import com.google.common.collect.ImmutableSet;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.device.PortStatistics;
+import org.onosproject.ui.RequestHandler;
+import org.onosproject.ui.UiMessageHandler;
+import org.onosproject.ui.table.AbstractTableRow;
+import org.onosproject.ui.table.TableRequestHandler;
+import org.onosproject.ui.table.TableRow;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+
+/**
+ * Message handler for port view related messages.
+ */
+public class PortViewMessageHandler extends UiMessageHandler {
+
+    private static final String PORT_DATA_REQ = "portDataRequest";
+    private static final String PORT_DATA_RESP = "portDataResponse";
+    private static final String PORTS = "ports";
+
+    private static final String ID = "id";
+    private static final String PKT_RX = "pkt_rx";
+    private static final String PKT_TX = "pkt_tx";
+    private static final String BYTES_RX = "bytes_rx";
+    private static final String BYTES_TX = "bytes_tx";
+    private static final String PKT_RX_DRP = "pkt_rx_drp";
+    private static final String PKT_TX_DRP = "pkt_tx_drp";
+    private static final String DURATION = "duration";
+
+    @Override
+    protected Collection<RequestHandler> getHandlers() {
+        return ImmutableSet.of(new PortDataRequest());
+    }
+
+    // handler for port table requests
+    private final class PortDataRequest extends TableRequestHandler {
+
+        private PortDataRequest() {
+            super(PORT_DATA_REQ, PORT_DATA_RESP, PORTS);
+        }
+
+        @Override
+        protected TableRow[] generateTableRows(ObjectNode payload) {
+            String uri = string(payload, "devId");
+            if (Strings.isNullOrEmpty(uri)) {
+                return new TableRow[0];
+            }
+            DeviceId deviceId = DeviceId.deviceId(uri);
+            DeviceService service = get(DeviceService.class);
+            List<TableRow> list = new ArrayList<>();
+            for (PortStatistics stat : service.getPortStatistics(deviceId)) {
+                list.add(new PortTableRow(stat));
+            }
+            return list.toArray(new TableRow[list.size()]);
+        }
+    }
+
+    /**
+     * TableRow implementation for
+     * {@link org.onosproject.net.device.PortStatistics port statistics}.
+     */
+    private static class PortTableRow extends AbstractTableRow {
+
+        private static final String[] COL_IDS = {
+                ID, PKT_RX, PKT_TX, BYTES_RX, BYTES_TX,
+                PKT_RX_DRP, PKT_TX_DRP, DURATION
+        };
+
+        public PortTableRow(PortStatistics stat) {
+            add(ID, Integer.toString(stat.port()));
+            add(PKT_RX, Long.toString(stat.packetsReceived()));
+            add(PKT_TX, Long.toString(stat.packetsSent()));
+            add(BYTES_RX, Long.toString(stat.bytesReceived()));
+            add(BYTES_TX, Long.toString(stat.bytesSent()));
+            add(PKT_RX_DRP, Long.toString(stat.packetsRxDropped()));
+            add(PKT_TX_DRP, Long.toString(stat.packetsTxDropped()));
+            add(DURATION, Long.toString(stat.durationSec()));
+        }
+
+        @Override
+        protected String[] columnIds() {
+            return COL_IDS;
+        }
+    }
+
+}
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java b/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java
index 0ac5a8b..92ac04d 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/UiExtensionManager.java
@@ -68,6 +68,7 @@
                 new UiView(NETWORK, "topo", "Topology", "nav_topo"),
                 new UiView(NETWORK, "device", "Devices", "nav_devs"),
                 new UiViewHidden("flow"),
+                new UiViewHidden("port"),
                 new UiView(NETWORK, "link", "Links", "nav_links"),
                 new UiView(NETWORK, "host", "Hosts", "nav_hosts"),
                 new UiView(NETWORK, "intent", "Intents", "nav_intents")
@@ -80,6 +81,7 @@
                         new LinkViewMessageHandler(),
                         new HostViewMessageHandler(),
                         new FlowViewMessageHandler(),
+                        new PortViewMessageHandler(),
                         new IntentViewMessageHandler(),
                         new ApplicationViewMessageHandler(),
                         new ClusterViewMessageHandler()