@Override
  protected int runWithJobId(
      final Namespace options,
      final HeliosClient client,
      final PrintStream out,
      final boolean json,
      final JobId jobId,
      final BufferedReader stdin)
      throws ExecutionException, InterruptedException, IOException {
    final String name = options.getString(nameArg.getDest());
    final long timeout = options.getLong(timeoutArg.getDest());
    final int parallelism = options.getInt(parallelismArg.getDest());
    final boolean async = options.getBoolean(asyncArg.getDest());
    final long rolloutTimeout = options.getLong(rolloutTimeoutArg.getDest());
    final boolean migrate = options.getBoolean(migrateArg.getDest());
    final boolean overlap = options.getBoolean(overlapArg.getDest());
    final String token = options.getString(tokenArg.getDest());

    checkArgument(timeout > 0, "Timeout must be greater than 0");
    checkArgument(parallelism > 0, "Parallelism must be greater than 0");
    checkArgument(rolloutTimeout > 0, "Rollout timeout must be greater than 0");

    final long startTime = timeSupplier.get();

    final RolloutOptions rolloutOptions =
        RolloutOptions.newBuilder()
            .setTimeout(timeout)
            .setParallelism(parallelism)
            .setMigrate(migrate)
            .setOverlap(overlap)
            .setToken(token)
            .build();
    final RollingUpdateResponse response = client.rollingUpdate(name, jobId, rolloutOptions).get();

    if (response.getStatus() != RollingUpdateResponse.Status.OK) {
      if (!json) {
        out.println("Failed: " + response);
      } else {
        out.println(response.toJsonString());
      }
      return 1;
    }

    if (!json) {
      out.println(
          format(
              "Rolling update%s started: %s -> %s "
                  + "(parallelism=%d, timeout=%d, overlap=%b, token=%s)%s",
              async ? " (async)" : "",
              name,
              jobId.toShortString(),
              parallelism,
              timeout,
              overlap,
              token,
              async ? "" : "\n"));
    }

    final Map<String, Object> jsonOutput = Maps.newHashMap();
    jsonOutput.put("parallelism", parallelism);
    jsonOutput.put("timeout", timeout);
    jsonOutput.put("overlap", overlap);
    jsonOutput.put("token", token);

    if (async) {
      if (json) {
        jsonOutput.put("status", response.getStatus());
        out.println(Json.asStringUnchecked(jsonOutput));
      }
      return 0;
    }

    String error = "";
    boolean failed = false;
    boolean timedOut = false;
    final Set<String> reported = Sets.newHashSet();
    while (true) {
      final DeploymentGroupStatusResponse status = client.deploymentGroupStatus(name).get();

      if (status == null) {
        failed = true;
        error = "Failed to fetch deployment-group status";
        break;
      }

      if (!jobId.equals(status.getDeploymentGroup().getJobId())) {
        // Another rolling-update was started, overriding this one -- exit
        failed = true;
        error = "Deployment-group job id changed during rolling-update";
        break;
      }

      if (!json) {
        for (DeploymentGroupStatusResponse.HostStatus hostStatus : status.getHostStatuses()) {
          final JobId hostJobId = hostStatus.getJobId();
          final String host = hostStatus.getHost();
          final TaskStatus.State state = hostStatus.getState();
          final boolean done =
              hostJobId != null && hostJobId.equals(jobId) && state == TaskStatus.State.RUNNING;

          if (done && reported.add(host)) {
            out.println(
                format(
                    "%s -> %s (%d/%d)",
                    host, state, reported.size(), status.getHostStatuses().size()));
          }
        }
      }

      if (status.getStatus() != DeploymentGroupStatusResponse.Status.ROLLING_OUT) {
        if (status.getStatus() == DeploymentGroupStatusResponse.Status.FAILED) {
          failed = true;
          error = status.getError();
        }
        break;
      }

      if (timeSupplier.get() - startTime > TimeUnit.MINUTES.toMillis(rolloutTimeout)) {
        // Rollout timed out
        timedOut = true;
        break;
      }

      sleepFunction.sleep(POLL_INTERVAL_MILLIS);
    }

    final double duration = (timeSupplier.get() - startTime) / 1000.0;

    if (json) {
      if (failed) {
        jsonOutput.put("status", "FAILED");
        jsonOutput.put("error", error);
      } else if (timedOut) {
        jsonOutput.put("status", "TIMEOUT");
      } else {
        jsonOutput.put("status", "DONE");
      }
      jsonOutput.put("duration", duration);
      out.println(Json.asStringUnchecked(jsonOutput));
    } else {
      out.println();
      if (failed) {
        out.println(format("Failed: %s", error));
      } else if (timedOut) {
        out.println("Timed out! (rolling-update still in progress)");
      } else {
        out.println("Done.");
      }
      out.println(format("Duration: %.2f s", duration));
    }

    return (failed || timedOut) ? 1 : 0;
  }
 public String toJsonString() {
   return Json.asStringUnchecked(this);
 }