content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.jstorm.ui.controller;
  
  import backtype.storm.generated.*;
  import backtype.storm.utils.NimbusClient;
  import com.alibaba.jstorm.cluster.Common;
  import com.alibaba.jstorm.ui.model.UIComponentMetric;
  import com.alibaba.jstorm.ui.model.TaskEntity;
  import com.alibaba.jstorm.ui.model.UITaskMetric;
  import com.alibaba.jstorm.ui.utils.NimbusClientManager;
  import com.alibaba.jstorm.ui.utils.UIMetricUtils;
  import com.alibaba.jstorm.ui.utils.UIUtils;
  import com.alibaba.jstorm.utils.JStormUtils;
  import org.apache.commons.lang.StringEscapeUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.stereotype.Controller;
  import org.springframework.ui.ModelMap;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestMethod;
  import org.springframework.web.bind.annotation.RequestParam;
  
  import java.util.*;
  
  /**
   * @author Jark (wuchong.wc@alibaba-inc.com)
   */
  @Controller
  public class ComponentController {
      private static final Logger LOG = LoggerFactory.getLogger(ComponentController.class);
  
      @RequestMapping(value = "/component", method = RequestMethod.GET)
      public String show(@RequestParam(value = "cluster", required = true) String clusterName,
                         @RequestParam(value = "topology", required = true) String topology_id,
                         @RequestParam(value = "component", required = true) String component,
                         @RequestParam(value = "win", required = false) String win,
                         ModelMap model) {
          clusterName = StringEscapeUtils.escapeHtml(clusterName);
          topology_id = StringEscapeUtils.escapeHtml(topology_id);
          long start = System.currentTimeMillis();
          int window = UIUtils.parseWindow(win);
          UIUtils.addWindowAttribute(model, window);
          NimbusClient client = null;
          try {
              client = NimbusClientManager.getNimbusClient(clusterName);
  
              //get Component Metric
              TopologyInfo topologyInfo = client.getClient().getTopologyInfo(topology_id);
              MetricInfo componentMetrics = topologyInfo.get_metrics().get_componentMetric();
  //            List<MetricInfo> componentMetrics = client.getClient().getMetrics(topology_id, MetaType.COMPONENT.getT());
              UIComponentMetric componentMetric = UIMetricUtils.getComponentMetric(componentMetrics, window,
                      component, topologyInfo.get_components());
              model.addAttribute("comp", componentMetric);
              model.addAttribute("compHead", UIMetricUtils.sortHead(componentMetric, UIComponentMetric.HEAD));
  
              //get Task Stat
              model.addAttribute("tasks", UIUtils.getTaskEntities(topologyInfo, component));
  
              //get Task metrics
  //            MetricInfo taskMetrics = topologyInfo.get_metrics().get_taskMetric();
              MetricInfo taskMetrics = client.getClient().getTaskMetrics(topology_id, component);
  //            System.out.println("taskMetrics:" + taskMetrics);
              List<UITaskMetric> taskData = UIMetricUtils.getTaskMetrics(taskMetrics, component, window);
              model.addAttribute("taskData", taskData);
              model.addAttribute("taskHead", UIMetricUtils.sortHead(taskData, UITaskMetric.HEAD));
  
          } catch (NotAliveException nae) {
              model.addAttribute("flush", String.format("The topology: %s is dead.", topology_id));
          } catch (Exception e) {
              NimbusClientManager.removeClient(clusterName);
              LOG.error(e.getMessage(), e);
              UIUtils.addErrorAttribute(model, e);
          }
  
          // page information
          model.addAttribute("clusterName", clusterName);
          model.addAttribute("topologyId", topology_id);
          model.addAttribute("compName", component);
          model.addAttribute("page", "component");
          model.addAttribute("supervisorPort", UIUtils.getSupervisorPort(clusterName));
          UIUtils.addTitleAttribute(model, "Component Summary");
          try {
              String topologyName = Common.topologyIdToName(topology_id);
              model.addAttribute("topologyName", topologyName);
          } catch (InvalidTopologyException e) {
              e.printStackTrace();
          }
  
          LOG.info("component page show cost:{}ms", System.currentTimeMillis() - start);
          return "component";
      }
  
  
  
  }
  