Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/cli/VirtualDeviceCompleter.java b/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/cli/VirtualDeviceCompleter.java
new file mode 100644
index 0000000..410b483
--- /dev/null
+++ b/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/cli/VirtualDeviceCompleter.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2016-present Open Networking Foundation
+ *
+ * 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.incubator.net.virtual.cli;
+
+import static org.onlab.osgi.DefaultServiceDirectory.getService;
+
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractChoicesCompleter;
+import org.onosproject.incubator.net.virtual.Comparators;
+import org.onosproject.incubator.net.virtual.NetworkId;
+import org.onosproject.incubator.net.virtual.VirtualDevice;
+import org.onosproject.incubator.net.virtual.VirtualNetworkService;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * Virtual device completer.
+ *
+ * Assumes the first argument which can be parsed to a number is network id.
+ */
+@Service
+public class VirtualDeviceCompleter extends AbstractChoicesCompleter {
+    @Override
+    protected List<String> choices() {
+        //parse argument list for network id
+        String[] argsArray = commandLine.getArguments();
+        for (String str : argsArray) {
+            if (str.matches("[0-9]+")) {
+                long networkId = Long.valueOf(str);
+                return getSortedVirtualDevices(networkId).stream()
+                        .map(virtualDevice -> virtualDevice.id().toString())
+                        .collect(Collectors.toList());
+            }
+        }
+        return Collections.singletonList("Missing network id");
+    }
+
+    /**
+     * Returns the list of virtual devices sorted using the network identifier.
+     *
+     * @param networkId network id
+     * @return sorted virtual device list
+     */
+    private List<VirtualDevice> getSortedVirtualDevices(long networkId) {
+        VirtualNetworkService service = getService(VirtualNetworkService.class);
+
+        List<VirtualDevice> virtualDevices = new ArrayList<>();
+        virtualDevices.addAll(service.getVirtualDevices(NetworkId.networkId(networkId)));
+        Collections.sort(virtualDevices, Comparators.VIRTUAL_DEVICE_COMPARATOR);
+        return virtualDevices;
+    }
+
+}