private static String getClusterConfigurationValue(Cluster cluster, String clusterConfig) {
    if (clusterConfig != null) {
      String[] parts = clusterConfig.split("/");
      if (parts.length == 2) {
        return cluster.getConfigurationValue(parts[0], parts[1]);
      }
    }
    return null;
  }
Get a specified configuration value from the given cluster.

@param cluster        the cluster
@param clusterConfig  the cluster configuration identifier

@return the configuration value or <code>null</code> if the desired configuration can not be found
ambari-server/src/main/java/org/apache/ambari/server/view/ViewContextImpl.java