protected ClusterTopology createClusterTopology(TreeNode<Resource> clusterNode)
      throws InvalidTopologyTemplateException, InvalidTopologyException {

    return new ClusterTopologyImpl(new AmbariContext(), new ExportBlueprintRequest(clusterNode, controller));
  }
Process host group component information for a specific host.

@param group host group instance

@return list of component names for the host
ambari-server/src/main/java/org/apache/ambari/server/api/query/render/ClusterBlueprintRenderer.java