code: @Override
      public void activate(String topologyName) throws TException {
          try {
              NimbusUtils.transitionName(data, topologyName, true, StatusType.activate);
              notifyTopologyActionListener(topologyName, "activate");
          } catch (NotAliveException e) {
              String errMsg = "Activate Error, topology " + topologyName + " is not alive!";
              LOG.error(errMsg, e);
              throw new NotAliveException(errMsg);
          } catch (Exception e) {
              String errMsg = "Failed to activate topology " + topologyName;
              LOG.error(errMsg, e);
              throw new TException(errMsg);
          }
      }
docs: set topology status as active