code: public static List<UITaskMetric> getTaskMetrics(MetricInfo info, String component, int window) {
          TreeMap<Integer, UITaskMetric> taskData = new TreeMap<>();
          if (info != null) {
              for (Map.Entry<String, Map<Integer, MetricSnapshot>> metric : info.get_metrics().entrySet()) {
                  String name = metric.getKey();
                  String[] split_name = name.split("@");
                  int taskId = JStormUtils.parseInt(UIMetricUtils.extractTaskId(split_name));
                  String componentName = UIMetricUtils.extractComponentName(split_name);
                  if (componentName != null && !componentName.equals(component)) continue;
  
                  //only handle the tasks belongs to the specific component
                  String metricName = UIMetricUtils.extractMetricName(split_name);
  
                  String parentComp = null;
                  if (metricName != null && metricName.contains(".")) {
                      parentComp = metricName.split("\\.")[0];
                      metricName = metricName.split("\\.")[1];
                  }
  
                  if (!metric.getValue().containsKey(window)) {
                      LOG.info("task snapshot {} missing window:{}", metric.getKey(), window);
                      continue;
                  }
                  MetricSnapshot snapshot = metric.getValue().get(window);
  
                  UITaskMetric taskMetric;
                  if (taskData.containsKey(taskId)) {
                      taskMetric = taskData.get(taskId);
                  } else {
                      taskMetric = new UITaskMetric(component, taskId);
                      taskData.put(taskId, taskMetric);
                  }
                  taskMetric.setMetricValue(snapshot, parentComp, metricName);
              }
          }
          for (UITaskMetric t : taskData.values()) {
              t.mergeValue();
          }
          return new ArrayList<>(taskData.values());
      }
docs: get all task metrics in the specific component
  @param info raw metric info
  @param component component id
  @param window window duration for metrics in seconds
  @return the list of task metrics