CORD-613 Adding ability to administratively enable or disable a port via CLI.
Currently uses the OpenFlow device provider to change portState.
Also fixes a bug in PortNumberCompleter.
Adds completion options to portstats for deviceId and portNumber.

Change-Id: Idcce775fe8bc5484fdd0e630bcb5026b85125478
diff --git a/cli/src/main/java/org/onosproject/cli/net/AnnotateDeviceCommand.java b/cli/src/main/java/org/onosproject/cli/net/AnnotateDeviceCommand.java
index 113fe31..9e89ff0 100644
--- a/cli/src/main/java/org/onosproject/cli/net/AnnotateDeviceCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/AnnotateDeviceCommand.java
@@ -22,6 +22,7 @@
 import org.onosproject.net.Device;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
+import org.onosproject.net.PortNumber;
 import org.onosproject.net.device.DefaultDeviceDescription;
 import org.onosproject.net.device.DeviceDescription;
 import org.onosproject.net.device.DeviceProvider;
@@ -100,5 +101,10 @@
         public boolean isReachable(DeviceId deviceId) {
             return false;
         }
+
+        @Override
+        public void changePortState(DeviceId deviceId, PortNumber portNumber,
+                                    boolean enable) {
+        }
     }
 }
diff --git a/cli/src/main/java/org/onosproject/cli/net/DevicePortStateCommand.java b/cli/src/main/java/org/onosproject/cli/net/DevicePortStateCommand.java
new file mode 100644
index 0000000..3962266
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/net/DevicePortStateCommand.java
@@ -0,0 +1,69 @@
+/*
+ * 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.cli.net;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.device.DeviceAdminService;
+import org.onosproject.net.device.DeviceService;
+
+/**
+ * Administratively enables or disabled a port on a device.
+ */
+@Command(scope = "onos", name = "portstate",
+         description = "Administratively enables or disabled a port on a device")
+public class DevicePortStateCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "uri", description = "Device ID",
+            required = true, multiValued = false)
+    String uri = null;
+
+    @Argument(index = 1, name = "portNumber", description = "Port Number",
+            required = true, multiValued = false)
+    Integer portNumber = null;
+
+    @Argument(index = 2, name = "portState", description = "Desired State",
+            required = true, multiValued = false)
+    String portState = null;
+
+    @Override
+    protected void execute() {
+        DeviceService deviceService = get(DeviceService.class);
+        DeviceAdminService deviceAdminService = get(DeviceAdminService.class);
+        Device dev = deviceService.getDevice(DeviceId.deviceId(uri));
+        if (dev == null) {
+            print(" %s", "Device does not exist");
+            return;
+        }
+        PortNumber pnum = PortNumber.portNumber(portNumber);
+        Port p = deviceService.getPort(dev.id(), pnum);
+        if (p == null) {
+            print(" %s", "Port does not exist");
+            return;
+        }
+        if (portState.equals("enable")) {
+            deviceAdminService.changePortState(dev.id(), pnum, true);
+        } else if (portState.equals("disable")) {
+            deviceAdminService.changePortState(dev.id(), pnum, false);
+        } else {
+            print(" %s", "State must be enable or disable");
+        }
+    }
+}
diff --git a/cli/src/main/java/org/onosproject/cli/net/DevicePortStatsCommand.java b/cli/src/main/java/org/onosproject/cli/net/DevicePortStatsCommand.java
index f9a8237..33ac366 100644
--- a/cli/src/main/java/org/onosproject/cli/net/DevicePortStatsCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/DevicePortStatsCommand.java
@@ -50,6 +50,10 @@
             required = false, multiValued = false)
     String uri = null;
 
+    @Argument(index = 1, name = "portNumber", description = "Port Number",
+            required = false, multiValued = false)
+    Integer portNumber = null;
+
     private static final String FORMAT =
             "   port=%s, pktRx=%s, pktTx=%s, bytesRx=%s, bytesTx=%s, pktRxDrp=%s, pktTxDrp=%s, Dur=%s";
 
@@ -94,6 +98,9 @@
     private void printPortStats(DeviceId deviceId, Iterable<PortStatistics> portStats) {
         print("deviceId=%s", deviceId);
         for (PortStatistics stat : sortByPort(portStats)) {
+            if (portNumber != null && stat.port() != portNumber) {
+                continue;
+            }
             print(FORMAT, stat.port(), stat.packetsReceived(), stat.packetsSent(), stat.bytesReceived(),
                     stat.bytesSent(), stat.packetsRxDropped(), stat.packetsTxDropped(), stat.durationSec());
         }
@@ -109,6 +116,9 @@
                 + " rateRx=%s, rateTx=%s, pktRxDrp=%s, pktTxDrp=%s, interval=%s";
         print("deviceId=%s", deviceId);
         for (PortStatistics stat : sortByPort(portStats)) {
+            if (portNumber != null && stat.port() != portNumber) {
+                continue;
+            }
             float duration = ((float) stat.durationSec()) +
                     (((float) stat.durationNano()) / TimeUnit.SECONDS.toNanos(1));
             float rateRx = stat.bytesReceived() * 8 / duration;
@@ -142,21 +152,24 @@
         print("|---------------------------------------------------------------------------------------------------|");
 
         for (PortStatistics stat : sortByPort(portStats)) {
-                float duration = ((float) stat.durationSec()) +
-                        (((float) stat.durationNano()) / TimeUnit.SECONDS.toNanos(1));
-                float rateRx = stat.bytesReceived() * 8 / duration;
-                float rateTx = stat.bytesSent() * 8 / duration;
-                print(formatDeltaTable, stat.port(),
-                        humanReadable(stat.packetsReceived()),
-                        humanReadable(stat.bytesReceived()),
-                        humanReadableBps(rateRx),
-                        humanReadable(stat.packetsRxDropped()),
-                        humanReadable(stat.packetsSent()),
-                        humanReadable(stat.bytesSent()),
-                        humanReadableBps(rateTx),
-                        humanReadable(stat.packetsTxDropped()),
-                        String.format("%.3f", duration));
+            if (portNumber != null && stat.port() != portNumber) {
+                continue;
             }
+            float duration = ((float) stat.durationSec()) +
+                    (((float) stat.durationNano()) / TimeUnit.SECONDS.toNanos(1));
+            float rateRx = stat.bytesReceived() * 8 / duration;
+            float rateTx = stat.bytesSent() * 8 / duration;
+            print(formatDeltaTable, stat.port(),
+                  humanReadable(stat.packetsReceived()),
+                  humanReadable(stat.bytesReceived()),
+                  humanReadableBps(rateRx),
+                  humanReadable(stat.packetsRxDropped()),
+                  humanReadable(stat.packetsSent()),
+                  humanReadable(stat.bytesSent()),
+                  humanReadableBps(rateTx),
+                  humanReadable(stat.packetsTxDropped()),
+                  String.format("%.3f", duration));
+        }
         print("+---------------------------------------------------------------------------------------------------+");
     }
 
diff --git a/cli/src/main/java/org/onosproject/cli/net/PortNumberCompleter.java b/cli/src/main/java/org/onosproject/cli/net/PortNumberCompleter.java
index 0a05d31..949f4f8 100644
--- a/cli/src/main/java/org/onosproject/cli/net/PortNumberCompleter.java
+++ b/cli/src/main/java/org/onosproject/cli/net/PortNumberCompleter.java
@@ -15,15 +15,16 @@
  */
 package org.onosproject.cli.net;
 
-import static com.google.common.base.Preconditions.checkArgument;
 import static org.onlab.osgi.DefaultServiceDirectory.getService;
 
+import java.util.Collections;
 import java.util.List;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
 
 import org.apache.karaf.shell.console.completer.ArgumentCompleter.ArgumentList;
 import org.onosproject.cli.AbstractChoicesCompleter;
+import org.onosproject.net.Device;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.device.DeviceService;
 
@@ -37,13 +38,22 @@
     @Override
     protected List<String> choices() {
         ArgumentList args = getArgumentList();
-        checkArgument(args.getCursorArgumentIndex() >= 1,
-                     "Expects DeviceId as previous argument");
-
-        String deviceIdStr = args.getArguments()[args.getCursorArgumentIndex() - 1];
-        DeviceId deviceId = DeviceId.deviceId(deviceIdStr);
-
+        //parse argument list for deviceId
         DeviceService deviceService = getService(DeviceService.class);
+        Device dev = null;
+        for (String str : args.getArguments()) {
+            if (str.contains(":")) {
+                dev = deviceService.getDevice(DeviceId.deviceId(str));
+                if (dev != null) {
+                    break;
+                }
+            }
+        }
+        if (dev == null) {
+            return Collections.singletonList("Missing device");
+        }
+        DeviceId deviceId = dev.id();
+
         return StreamSupport.stream(deviceService.getPorts(deviceId).spliterator(), false)
             .map(port -> port.number().toString())
             .collect(Collectors.toList());
diff --git a/cli/src/main/java/org/onosproject/cli/net/PortStateCompleter.java b/cli/src/main/java/org/onosproject/cli/net/PortStateCompleter.java
new file mode 100644
index 0000000..e9accbe
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/net/PortStateCompleter.java
@@ -0,0 +1,35 @@
+/*
+ * 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.cli.net;
+
+import java.util.List;
+
+import org.onosproject.cli.AbstractChoicesCompleter;
+
+import com.google.common.collect.ImmutableList;
+
+/**
+ * PortState completer.
+ *
+ * Assumes argument right before the one being completed is PortNumber.
+ */
+public class PortStateCompleter extends AbstractChoicesCompleter {
+
+    @Override
+    protected List<String> choices() {
+        return ImmutableList.of("enable", "disable");
+    }
+}