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.daemon.worker;
  
  import backtype.storm.serialization.KryoTupleSerializer;
  import backtype.storm.task.GeneralTopologyContext;
  import backtype.storm.utils.WorkerClassLoader;
  import com.alibaba.jstorm.callback.RunnableCallback;
  import com.alibaba.jstorm.task.TaskShutdownDameon;
  import java.util.List;
  import java.util.Map;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * @author JohnFang (xiaojian.fxj@alibaba-inc.com).
   */
  public class WorkerSerializeRunnable extends RunnableCallback {
      private static Logger LOG = LoggerFactory.getLogger(WorkerSerializeRunnable.class);
  
      private volatile List<TaskShutdownDameon> shutdownTasks;
      private int threadIndex;
      private int startRunTaskIndex;
      private KryoTupleSerializer serializer;
  
      public WorkerSerializeRunnable(List<TaskShutdownDameon> shutdownTasks, Map stormConf,
                                     GeneralTopologyContext topologyContext, int startRunTaskIndex, int threadIndex) {
          this.shutdownTasks = shutdownTasks;
          this.threadIndex = threadIndex;
          this.startRunTaskIndex = startRunTaskIndex;
          this.serializer = new KryoTupleSerializer(stormConf, topologyContext.getRawTopology());
      }
  
      @Override
      public String getThreadName() {
          return "worker-serializer-" + threadIndex;
      }
  
      @Override
      public void preRun() {
          WorkerClassLoader.switchThreadContext();
      }
  
      @Override
      public void postRun() {
          WorkerClassLoader.restoreThreadContext();
      }
  
      @Override
      public void run() {
          LOG.info("Successfully started worker-serializer-{}", threadIndex);
          while (true) {
              try {
                  TaskShutdownDameon taskShutdownDameon = shutdownTasks.get(startRunTaskIndex);
                  taskShutdownDameon.getTask().getTaskTransfer().serializer(serializer);
                  startRunTaskIndex++;
              } catch (IndexOutOfBoundsException e) {
                  startRunTaskIndex = 0;
              }
          }
      }
  
      public Object getResult() {
          LOG.info("Begin to shutdown worker-serializer-{}", threadIndex);
          return -1;
      }
  }
  