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/store/impl/DistributedVirtualFlowObjectiveStore.java b/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/store/impl/DistributedVirtualFlowObjectiveStore.java
new file mode 100644
index 0000000..5bcfabc
--- /dev/null
+++ b/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/store/impl/DistributedVirtualFlowObjectiveStore.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2017-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.store.impl;
+
+import com.google.common.collect.Maps;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.incubator.net.virtual.NetworkId;
+import org.onosproject.incubator.net.virtual.VirtualNetworkFlowObjectiveStore;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.Serializer;
+import org.osgi.service.component.annotations.Component;
+import org.slf4j.Logger;
+
+import java.util.concurrent.ConcurrentMap;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Distributed flow objective store for virtual network.
+ */
+@Component(immediate = true, enabled = false, service = VirtualNetworkFlowObjectiveStore.class)
+public class DistributedVirtualFlowObjectiveStore
+        extends SimpleVirtualFlowObjectiveStore
+        implements VirtualNetworkFlowObjectiveStore {
+
+    private final Logger log = getLogger(getClass());
+
+    private ConsistentMap<NetworkId, ConcurrentMap<Integer, byte[]>> nextGroupsMap;
+    private static final String VNET_FLOW_OBJ_GROUP_MAP_NAME =
+            "onos-networkId-flowobjective-groups";
+    private static final String VNET_FLOW_OBJ_GROUP_MAP_FRIENDLYNAME =
+            "DistributedVirtualFlowObjectiveStore";
+
+    @Override
+    protected void initNextGroupsMap() {
+        nextGroupsMap = storageService.<NetworkId, ConcurrentMap<Integer, byte[]>>consistentMapBuilder()
+                .withName(VNET_FLOW_OBJ_GROUP_MAP_NAME)
+                .withSerializer(Serializer.using(
+                        new KryoNamespace.Builder()
+                                .register(KryoNamespaces.API)
+                                .register(NetworkId.class)
+                                .build(VNET_FLOW_OBJ_GROUP_MAP_FRIENDLYNAME)))
+                .build();
+
+    }
+
+    @Override
+    protected ConcurrentMap<Integer, byte[]> getNextGroups(NetworkId networkId) {
+        nextGroupsMap.computeIfAbsent(networkId, n -> {
+            log.debug("getNextGroups - creating new ConcurrentMap");
+            return Maps.newConcurrentMap();
+        });
+
+        return nextGroupsMap.get(networkId).value();
+    }
+
+    @Override
+    protected void updateNextGroupsMap(NetworkId networkId, ConcurrentMap<Integer,
+            byte[]> nextGroups) {
+        nextGroupsMap.put(networkId, nextGroups);
+    }
+
+}