Implemented dummy Neutron ML2 plugin handler

- Added REST handler for Neutron ML2 ONOS mech driver
- Made cordvtn ARP proxy to handle request for host, too
- Now cordvtn utilizes openstackSwitching only as a Neutron REST client

Change-Id: I6890b6651ddcb9d8cf33fb326e9f0eb721b536a5
diff --git a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2NetworksWebResource.java b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2NetworksWebResource.java
new file mode 100644
index 0000000..16bbc61
--- /dev/null
+++ b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/rest/NeutronMl2NetworksWebResource.java
@@ -0,0 +1,66 @@
+/*
+ * 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.cordvtn.rest;
+
+import org.onosproject.rest.AbstractWebResource;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.io.InputStream;
+
+/**
+ * Dummy Neutron ML2 mechanism driver.
+ * It just returns OK for networks resource requests.
+ */
+@Path("networks")
+public class NeutronMl2NetworksWebResource extends AbstractWebResource {
+    protected final Logger log = LoggerFactory.getLogger(getClass());
+    private static final String NETWORKS_MESSAGE = "Received networks %s";
+
+    @POST
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response createNetwork(InputStream input) {
+        log.debug(String.format(NETWORKS_MESSAGE, "create"));
+        return Response.status(Response.Status.OK).build();
+    }
+
+    @PUT
+    @Path("{id}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response updateNetwork(@PathParam("id") String id, InputStream input) {
+        log.debug(String.format(NETWORKS_MESSAGE, "update"));
+        return Response.status(Response.Status.OK).build();
+    }
+
+    @DELETE
+    @Path("{id}")
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response deleteNetwork(@PathParam("id") String id) {
+        log.debug(String.format(NETWORKS_MESSAGE, "delete"));
+        return Response.status(Response.Status.OK).build();
+    }
+}