@Override
  public Set<Resource> getResources(Request request, Predicate predicate) throws SystemException,
      UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
    IvoryService  service         = getService();
    List<String>  clusterNames    = service.getClusterNames();
    Set<String>   requestedIds = getRequestPropertyIds(request, predicate);
    Set<Resource> resources    = new HashSet<>();

    for (String clusterName : clusterNames ) {

      Cluster cluster = service.getCluster(clusterName);

      Resource resource = new ResourceImpl(Resource.Type.DRTargetCluster);
      setResourceProperty(resource, CLUSTER_NAME_PROPERTY_ID,
          cluster.getName(), requestedIds);
      setResourceProperty(resource, CLUSTER_COLO_PROPERTY_ID,
          cluster.getColo(), requestedIds);
      setResourceProperty(resource, CLUSTER_INTERFACES_PROPERTY_ID,
          cluster.getInterfaces(), requestedIds);
      setResourceProperty(resource, CLUSTER_LOCATIONS_PROPERTY_ID,
          cluster.getLocations(), requestedIds);
      setResourceProperty(resource, CLUSTER_PROPERTIES_PROPERTY_ID,
          cluster.getProperties(), requestedIds);

      if (predicate == null || predicate.evaluate(resource)) {
        resources.add(resource);
      }
    }
    return resources;
  }
Construct a provider.

@param ivoryService    the ivory service
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/TargetClusterResourceProvider.java