private Set<RootServiceHostComponentResponse> getRootServiceHostComponents(
      RootServiceHostComponentRequest request) throws AmbariException{

    AmbariManagementController controller = getManagementController();
    //Get all hosts of all clusters
    Set<HostResponse> hosts = HostResourceProvider.getHosts(controller,
        new HostRequest(request.getHostName(), null), null);

    return controller.getRootServiceResponseFactory().getRootServiceHostComponent(request, hosts);
  }
The property ids for a RootServiceHostComponent resource.
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/RootServiceHostComponentResourceProvider.java