[ONOS-5241] Add CLI to VPLS

Change-Id: I2d90a6370babea0538eb063b21ca29b49deb425f
diff --git a/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsDelIfaceCommand.java b/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsDelIfaceCommand.java
new file mode 100644
index 0000000..695e48f
--- /dev/null
+++ b/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsDelIfaceCommand.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2016-present 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.vpls.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.intf.Interface;
+import org.onosproject.vpls.config.VplsConfigurationService;
+
+import java.util.Set;
+
+/**
+ * CLI to remove an interface from an existing VPLS.
+ */
+@Command(scope = "onos", name = "vpls-del-iface",
+        description = "Removes an interface from an existing VPLS")
+public class VplsDelIfaceCommand extends AbstractShellCommand {
+
+    private static final String NO_CONFIGURATION = "Interface %s is not configured";
+    private VplsConfigurationService vplsConfigService =
+            get(VplsConfigurationService.class);
+
+    @Argument(index = 0, name = "IFACE_NAME", description = "Name of the interface" +
+            " to remove from the VPLS", required = true, multiValued = false)
+    private String ifaceName = null;
+
+    @Override
+    protected void execute() {
+        Set<Interface> ifaces = vplsConfigService.getAllInterfaces();
+
+        if (!ifaces.stream().map(Interface::name).anyMatch(ifaceName::equals)) {
+            print(NO_CONFIGURATION, ifaceName);
+        }
+
+        vplsConfigService.removeInterfaceFromVpls(ifaceName);
+    }
+
+}