code: public static String comp2topologyName(String old) {
          String[] parts = old.split(DELIM);
          parts[0] = MetaType.TOPOLOGY.getV() + parts[0].charAt(1);
          // type + topologyId + comp + task + group + name
          return concat(parts[0], parts[1], EMPTY, "0", parts[5], parts[6]);
      }
docs: change component metric name to topology metric name