content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * Licensed 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.otter.shared.arbitrate.demo.servcie;
  
  import java.io.File;
  import java.io.PrintWriter;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.Future;
  
  import org.apache.commons.lang.math.RandomUtils;
  
  import com.alibaba.otter.shared.arbitrate.ArbitrateViewService;
  import com.alibaba.otter.shared.common.model.statistics.stage.ProcessStat;
  import com.alibaba.otter.shared.common.model.statistics.stage.StageStat;
  import com.alibaba.otter.shared.common.utils.thread.NamedThreadFactory;
  import com.google.common.collect.Maps;
  
  public class ProcessViewDemo implements PipelineLifeCycle {
  
      private ArbitrateViewService arbitrateViewService;
      private ExecutorService      executor = Executors.newCachedThreadPool(new NamedThreadFactory("ProcessView"));
      private Map<Long, Future>    threads  = Maps.newConcurrentMap();
  
      public void submit(Long pipelineId) {
          if (threads.containsKey(pipelineId)) {
              throw new IllegalArgumentException("pipeline is dup!");
          }
  
          Future future = executor.submit(new ViewWorker(pipelineId));
          threads.put(pipelineId, future);
      }
  
      public void destory(Long pipelineId) {
          if (!threads.containsKey(pipelineId)) {
              throw new IllegalArgumentException("pipeline is not exist!");
          }
  
          Future future = threads.get(pipelineId);
          future.cancel(true);
      }
  
      private class ViewWorker implements Runnable {
  
          private Long pipelineId;
  
          public ViewWorker(Long pipelineId){
              this.pipelineId = pipelineId;
          }
  
          public void run() {
              PrintWriter print = null;
              try {
                  String tmp = System.getProperty("java.io.tmpdir", "/tmp");
                  File log = new File(tmp + "/process.log");
                  if (log.exists() == false) {
                      log.createNewFile();
                  }
  
                  print = new PrintWriter(log);
                  while (true) {
                      if (Thread.currentThread().isInterrupted()) {
                          break;
                      }
  
                      List<ProcessStat> processStats = arbitrateViewService.listProcesses(100L, pipelineId);
                      StringBuilder builder = new StringBuilder();
                      builder.append("=============================== time : " + printDate(new Date().getTime())).append("\n");
  
                      builder.append("pipeline : ").append(pipelineId).append("\n");
                      for (ProcessStat processStat : processStats) {
                          builder.append("\t process : ").append(processStat.getProcessId()).append("\n");
  
                          for (StageStat stageStat : processStat.getStageStats()) {
                              builder.append("\t\t ").append(stageStat.getStage().name());
                              builder.append("    ====> startTime [").append(printDate(stageStat.getStartTime())).append(" ]");
                              if (stageStat.getEndTime() != null) {
                                  builder.append(" endTime [").append(printDate(stageStat.getEndTime())).append(" ]");
                              }
                              builder.append("\n");
                          }
                      }
  
                      print.println(builder.toString());
                      print.flush();
  
                      try {
                          Thread.sleep(500 + RandomUtils.nextInt(1000));
                      } catch (InterruptedException e) {
                          break;
                      }
                  }
              } catch (Exception e1) {
                  e1.printStackTrace(print);
              } finally {
                  print.flush();
                  print.close();
              }
          }
  
          private String printDate(Long time) {
              Date date = new Date(time);
              return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date);
          }
      }
  
      public void setArbitrateViewService(ArbitrateViewService arbitrateViewService) {
          this.arbitrateViewService = arbitrateViewService;
      }
  
  }
  