Renamed forwarding and proxyarp packages

net.onrc.onos.ofcontroller.forwarding => net.onrc.onos.apps.forwarding
net.onrc.onos.ofcontroller.proxyarp => net.onrc.onos.apps.proxyarp

Change-Id: Id368d4fd675b00ad84c17d44dd9804f010710cde
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java b/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java
new file mode 100644
index 0000000..7bf2a5a
--- /dev/null
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java
@@ -0,0 +1,26 @@
+package net.onrc.onos.apps.proxyarp;
+
+import java.util.List;
+
+import org.restlet.resource.Get;
+import org.restlet.resource.ServerResource;
+
+/**
+ * REST resource to view the IP to MAC mappings in the ARP cache.
+ *
+ */
+public class ArpCacheResource extends ServerResource {
+
+    /**
+     * Handler for a REST call to retrieve the ARP cache.
+     * @return list of mappings formatted as a human-readable string.
+     */
+    @Get("json")
+    public List<String> getArpCache() {
+        IProxyArpService arp = (IProxyArpService) getContext().getAttributes()
+                .get(IProxyArpService.class.getCanonicalName());
+
+        return arp.getMappings();
+    }
+
+}