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.MetricInfo;
  import backtype.storm.generated.MetricSnapshot;
  import backtype.storm.generated.SupervisorWorkers;
  import backtype.storm.generated.WorkerSummary;
  import backtype.storm.utils.NimbusClient;
  import com.alibaba.jstorm.ui.model.SupervisorEntity;
  import com.alibaba.jstorm.ui.model.UIWorkerMetric;
  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 com.alibaba.jstorm.utils.NetWorkUtils;
  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.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author Jark (wuchong.wc@alibaba-inc.com)
   */
  @Controller
  public class SupervisorController {
      private static final Logger LOG = LoggerFactory.getLogger(SupervisorController.class);
  
      @RequestMapping(value = "/supervisor", method = RequestMethod.GET)
      public String show(@RequestParam(value = "cluster", required = true) String clusterName,
                         @RequestParam(value = "host", required = true) String host,
                         @RequestParam(value = "win", required = false) String win,
                         ModelMap model) {
          if (UIUtils.isValidSupervisorHost(clusterName, host)) {
              UIUtils.addErrorAttribute(model, new RuntimeException("Not a valid host: " + host));
              return "supervisor";
          }
  
          clusterName = StringEscapeUtils.escapeHtml(clusterName);
          long start = System.currentTimeMillis();
          host = NetWorkUtils.host2Ip(host);
          int window = UIUtils.parseWindow(win);
          UIUtils.addWindowAttribute(model, window);
          NimbusClient client = null;
          try {
              client = NimbusClientManager.getNimbusClient(clusterName);
  
              //get supervisor summary
              SupervisorWorkers supervisorWorkers = client.getClient().getSupervisorWorkers(host);
              model.addAttribute("supervisor", new SupervisorEntity(supervisorWorkers.get_supervisor()));
  
              //get worker summary
              List<WorkerSummary> workerSummaries = supervisorWorkers.get_workers();
              model.addAttribute("workerSummary", UIUtils.getWorkerEntities(workerSummaries));
  
              //get worker metrics
              Map<String, MetricInfo> workerMetricInfo = supervisorWorkers.get_workerMetric();
              List<UIWorkerMetric> workerMetrics = UIMetricUtils.getWorkerMetrics(workerMetricInfo,
                      workerSummaries, host, window);
  //            System.out.println("workerMetricInfo:"+workerMetricInfo);
              model.addAttribute("workerMetrics", workerMetrics);
              model.addAttribute("workerHead", UIMetricUtils.sortHead(workerMetrics, UIWorkerMetric.HEAD));
  
  
          } catch (Exception e) {
              NimbusClientManager.removeClient(clusterName);
              LOG.error(e.getMessage(), e);
              UIUtils.addErrorAttribute(model, e);
          }
          // page information
          model.addAttribute("clusterName", clusterName);
          model.addAttribute("host", host);
          model.addAttribute("page", "supervisor");
          model.addAttribute("supervisorPort", UIUtils.getSupervisorPort(clusterName));
          UIUtils.addTitleAttribute(model, "Supervisor Summary");
  
          LOG.info("supervisor page show cost:{}ms", System.currentTimeMillis() - start);
          return "supervisor";
      }
  
  
  
  
  }
  