import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.CapacitySchedulerInfo; //导入依赖的package包/类
@Override
public void render(Block html) {
  html._(MetricsOverviewTable.class);
  UL<DIV<DIV<Hamlet>>> ul = html.
    div("#cs-wrapper.ui-widget").
      div(".ui-widget-header.ui-corner-top").
        _("Application Queues")._().
      div("#cs.ui-widget-content.ui-corner-bottom").
        ul();
  if (cs == null) {
    ul.
      li().
        a(_Q).$style(width(Q_MAX_WIDTH)).
          span().$style(Q_END)._("100% ")._().
          span(".q", "default")._()._();
  } else {
    CSQueue root = cs.getRootQueue();
    CapacitySchedulerInfo sinfo = new CapacitySchedulerInfo(root);
    csqinfo.csinfo = sinfo;
    csqinfo.qinfo = null;

    float used = sinfo.getUsedCapacity() / 100;
    ul.
      li().$style("margin-bottom: 1em").
        span().$style("font-weight: bold")._("Legend:")._().
        span().$class("qlegend ui-corner-all").$style(Q_GIVEN).
          _("Capacity")._().
        span().$class("qlegend ui-corner-all").$style(Q_UNDER).
          _("Used")._().
        span().$class("qlegend ui-corner-all").$style(Q_OVER).
          _("Used (over capacity)")._().
        span().$class("qlegend ui-corner-all ui-state-default").
          _("Max Capacity")._().
      _().
      li().
        a(_Q).$style(width(Q_MAX_WIDTH)).
          span().$style(join(width(used), ";left:0%;",
              used > 1 ? Q_OVER : Q_UNDER))._(".")._().
          span(".q", "root")._().
        span().$class("qstats").$style(left(Q_STATS_POS)).
          _(join(percent(used), " used"))._().
        _(QueueBlock.class)._();
  }
  ul._()._().
  script().$type("text/javascript").
      _("$('#cs').hide();")._()._().
  _(AppsBlock.class);
}