ONOS-631 #Initial MPLS intent implementation

Change-Id: I6f906b953f06f395cc67e612648802e333c0e581
diff --git a/cli/src/main/java/org/onosproject/cli/net/AddMplsIntent.java b/cli/src/main/java/org/onosproject/cli/net/AddMplsIntent.java
new file mode 100644
index 0000000..577743a
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/net/AddMplsIntent.java
@@ -0,0 +1,120 @@
+package org.onosproject.cli.net;
+
+import static org.onosproject.net.DeviceId.deviceId;
+import static org.onosproject.net.PortNumber.portNumber;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.commands.Option;
+
+import org.onlab.packet.MplsLabel;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.intent.Constraint;
+import org.onosproject.net.intent.IntentService;
+import org.onosproject.net.intent.MplsIntent;
+
+@Command(scope = "onos", name = "add-mpls-intent", description = "Installs mpls connectivity intent")
+public class AddMplsIntent extends ConnectivityIntentCommand {
+
+    @Argument(index = 0, name = "ingressDevice",
+            description = "Ingress Device/Port Description",
+            required = true,
+            multiValued = false)
+    private String ingressDeviceString = null;
+
+    @Option(name = "--ingressLabel",
+            description = "Ingress Mpls label",
+            required = false,
+            multiValued = false)
+    private String ingressLabelString = "";
+
+    @Argument(index = 1, name = "egressDevice",
+            description = "Egress Device/Port Description",
+            required = true,
+            multiValued = false)
+    private String egressDeviceString = null;
+
+    @Option(name = "--egressLabel",
+            description = "Egress Mpls label",
+            required = false,
+            multiValued = false)
+    private String egressLabelString = "";
+
+    @Override
+    protected void execute() {
+        IntentService service = get(IntentService.class);
+
+        DeviceId ingressDeviceId = deviceId(getDeviceId(ingressDeviceString));
+        PortNumber ingressPortNumber = portNumber(getPortNumber(ingressDeviceString));
+        ConnectPoint ingress = new ConnectPoint(ingressDeviceId,
+                                                ingressPortNumber);
+        Optional<MplsLabel> ingressLabel = Optional.empty();
+        if (!ingressLabelString.isEmpty()) {
+            ingressLabel = Optional
+                    .ofNullable(MplsLabel.mplsLabel(parseInt(ingressLabelString)));
+        }
+
+        DeviceId egressDeviceId = deviceId(getDeviceId(egressDeviceString));
+        PortNumber egressPortNumber = portNumber(getPortNumber(egressDeviceString));
+        ConnectPoint egress = new ConnectPoint(egressDeviceId, egressPortNumber);
+
+        Optional<MplsLabel> egressLabel = Optional.empty();
+        if (!ingressLabelString.isEmpty()) {
+            egressLabel = Optional
+                    .ofNullable(MplsLabel.mplsLabel(parseInt(egressLabelString)));
+        }
+
+        TrafficSelector selector = buildTrafficSelector();
+        TrafficTreatment treatment = buildTrafficTreatment();
+
+        List<Constraint> constraints = buildConstraints();
+
+        MplsIntent intent = new MplsIntent(appId(), selector, treatment,
+                                           ingress, ingressLabel, egress,
+                                           egressLabel, constraints);
+        service.submit(intent);
+    }
+
+    /**
+     * Extracts the port number portion of the ConnectPoint.
+     *
+     * @param deviceString string representing the device/port
+     * @return port number as a string, empty string if the port is not found
+     */
+    public static String getPortNumber(String deviceString) {
+        int slash = deviceString.indexOf('/');
+        if (slash <= 0) {
+            return "";
+        }
+        return deviceString.substring(slash + 1, deviceString.length());
+    }
+
+    /**
+     * Extracts the device ID portion of the ConnectPoint.
+     *
+     * @param deviceString string representing the device/port
+     * @return device ID string
+     */
+    public static String getDeviceId(String deviceString) {
+        int slash = deviceString.indexOf('/');
+        if (slash <= 0) {
+            return "";
+        }
+        return deviceString.substring(0, slash);
+    }
+
+    protected Integer parseInt(String value) {
+        try {
+            return Integer.parseInt(value);
+        } catch (NumberFormatException nfe) {
+            return null;
+        }
+    }
+}
diff --git a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 478eaa9..314fa5e 100644
--- a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -297,6 +297,12 @@
         <command>
             <action class="org.onosproject.cli.net.WipeOutCommand"/>
         </command>
+        <command>
+			<action class="org.onosproject.cli.net.AddMplsIntent" />
+			<completers>
+			<ref component-id="connectPointCompleter" />
+		</completers>
+		</command>
     </command-bundle>
 
     <bean id="appNameCompleter" class="org.onosproject.cli.app.ApplicationNameCompleter"/>