Add a method to get resource allocation of the given resource

Change-Id: I06b2f83b5a07a1bcbada9db5263abd2e1a4a4d17
diff --git a/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceManager.java b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceManager.java
index 2cd1a2e..5226967 100644
--- a/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceManager.java
+++ b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceManager.java
@@ -91,6 +91,14 @@
     }
 
     @Override
+    public Optional<ResourceAllocation> getResourceAllocation(ResourcePath resource) {
+        checkNotNull(resource);
+
+        Optional<ResourceConsumer> consumer = store.getConsumer(resource);
+        return consumer.map(x -> new ResourceAllocation(resource, x));
+    }
+
+    @Override
     public <T> Collection<ResourceAllocation> getResourceAllocations(ResourcePath parent, Class<T> cls) {
         checkNotNull(parent);
         checkNotNull(cls);