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.utils;
  
  import java.io.BufferedOutputStream;
  import java.io.DataOutputStream;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class JStormUtilsTest {
      private static final Logger LOG = LoggerFactory.getLogger(JStormUtilsTest.class);
  
      private static final int RESTART_TIMES = 1000;
  
      private static String cmd = "";
  
      private static String pidDir = "/tmp/pids";
  
      private static int killedTimes = 0;
      private static int forkTimes = 0;
  
      public static void testRestartProcess() {
          final int intervalSec = Integer.valueOf("10");
          new Thread(new Runnable() {
  
              @Override
              public void run() {
                  LOG.info("Begin to start fork thread");
                  Map<String, String> environment = new HashMap<String, String>();
  
                  // TODO Auto-generated method stub
                  while (forkTimes < RESTART_TIMES) {
  
                      try {
                          JStormUtils.launchProcess(cmd + " " + forkTimes, environment, true);
                      } catch (IOException e) {
                          // TODO Auto-generated catch block
                          LOG.error("Failed to fork process " + cmd + forkTimes, e);
                          continue;
                      }
  
                      LOG.info("Successfully launch " + forkTimes);
  
                      JStormUtils.sleepMs(1000);
  
                      forkTimes++;
  
                  }
                  LOG.info("Successfully shutdown fok thread");
              }
  
          }).start();
  
          new Thread(new Runnable() {
  
              @Override
              public void run() {
                  LOG.info("Begin to start killing thread");
  
                  File file = new File(pidDir);
                  // TODO Auto-generated method stub
                  while (killedTimes < RESTART_TIMES) {
                      File[] pids = file.listFiles();
                      if (pids == null) {
                          JStormUtils.sleepMs(100);
                          continue;
                      }
  
                      for (File pidFile : pids) {
                          String pid = pidFile.getName();
  
                          JStormUtils.ensure_process_killed(Integer.valueOf(pid));
  
                          killedTimes++;
  
                          pidFile.delete();
                      }
  
                      JStormUtils.sleepMs(100);
  
                  }
                  LOG.info("Successfully shutdown killing thread");
              }
  
          }).start();
  
          while (killedTimes < RESTART_TIMES) {
              JStormUtils.sleepMs(100);
          }
      }
  
      public static void fillData() {
          Map<Long, String> map = new HashMap<Long, String>();
  
          for (long l = 0; l < 1000000; l++) {
              map.put(l, String.valueOf(l));
          }
      }
  
      public static void testJar(String id) {
          try {
  
              PathUtils.local_mkdirs(pidDir);
          } catch (IOException e) {
              LOG.error("Failed to rmr " + pidDir, e);
          }
  
          fillData();
          LOG.info("Finish load data");
  
          String pid = JStormUtils.process_pid();
  
          String pidFile = pidDir + File.separator + pid;
  
          try {
              PathUtils.touch(pidFile);
          } catch (IOException e) {
              // TODO Auto-generated catch block
              LOG.error("Failed to touch " + pidFile, e);
          }
          try {
  
              DataOutputStream raf = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(new File(pidFile), true)));
  
              raf.writeBytes(pid);
          } catch (Exception e) {
              LOG.error("", e);
          }
  
          while (true) {
              JStormUtils.sleepMs(1000);
              LOG.info(id + " is living");
          }
  
      }
  
      public static void main(String[] args) {
  
          if (args.length == 0) {
              testRestartProcess();
          } else {
              testJar(args[0]);
          }
      }
  
  }
  