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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.task;
  
  import backtype.storm.hooks.ITaskHook;
  import backtype.storm.spout.ISpout;
  import backtype.storm.task.IBolt;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.topology.IDynamicComponent;
  import backtype.storm.utils.WorkerClassLoader;
  import com.alibaba.jstorm.callback.AsyncLoopThread;
  import com.alibaba.jstorm.cluster.StormClusterState;
  import com.alibaba.jstorm.daemon.worker.ShutdownableDameon;
  import com.alibaba.jstorm.daemon.worker.timer.TaskHeartbeatTrigger;
  import com.alibaba.jstorm.utils.JStormUtils;
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicBoolean;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * shutdown one task
   *
   * @author yannian/Longda
   */
  public class TaskShutdownDameon implements ShutdownableDameon {
      private static Logger LOG = LoggerFactory.getLogger(TaskShutdownDameon.class);
  
      private Task task;
      private TaskStatus taskStatus;
      private String topologyId;
      private Integer taskId;
      private List<AsyncLoopThread> allThreads;
      private StormClusterState zkCluster;
      private Object taskObj;
      private AtomicBoolean isClosing = new AtomicBoolean(false);
      private TaskHeartbeatTrigger taskHeartbeatTrigger;
  
      public TaskShutdownDameon(TaskStatus taskStatus, String topologyId, Integer taskId,
                                List<AsyncLoopThread> allThreads, StormClusterState zkCluster,
                                Object taskObj, Task task, TaskHeartbeatTrigger taskHeartbeatTrigger) {
          this.taskStatus = taskStatus;
          this.topologyId = topologyId;
          this.taskId = taskId;
          this.allThreads = allThreads;
          this.zkCluster = zkCluster;
          this.taskObj = taskObj;
          this.task = task;
          this.taskHeartbeatTrigger = taskHeartbeatTrigger;
      }
  
      @Override
      public void shutdown() {
          if (isClosing.compareAndSet(false, true)) {
              LOG.info("Begin to shut down task " + topologyId + ":" + taskId);
  
              TopologyContext userContext = task.getUserContext();
              for (ITaskHook iTaskHook : userContext.getHooks())
                  iTaskHook.cleanup();
              closeComponent(taskObj);
              taskHeartbeatTrigger.updateExecutorStatus(TaskStatus.SHUTDOWN);
  
              // wait 1 sec for executor thread to shutdown to make sure to send shutdown info to TM
              try {
                  Thread.sleep(1000);
              } catch (InterruptedException ignored) {
              }
  
              // all thread will check the taskStatus
              // once it has been set to SHUTDOWN, it will quit
              taskStatus.setStatus(TaskStatus.SHUTDOWN);
  
              for (AsyncLoopThread thr : allThreads) {
                  LOG.info("Begin to shutdown " + thr.getThread().getName());
                  thr.cleanup();
                  JStormUtils.sleepMs(10);
                  thr.interrupt();
                  // try {
                  // //thr.join();
                  // thr.getThread().stop(new RuntimeException());
                  // } catch (Throwable e) {
                  // }
                  LOG.info("Successfully shutdown " + thr.getThread().getName());
              }
  
              taskHeartbeatTrigger.unregister();
              LOG.info("Successfully shutdown task heartbeat trigger for task:{}", taskId);
  
              try {
                  zkCluster.disconnect();
              } catch (Exception e) {
                  LOG.error("Failed to disconnect zk for task-" + taskId);
              }
  
              LOG.info("Successfully shutdown task " + topologyId + ":" + taskId);
          }
      }
  
      public void join() throws InterruptedException {
          for (AsyncLoopThread t : allThreads) {
              t.join();
          }
      }
  
      private void closeComponent(Object _task_obj) {
          if (_task_obj instanceof IBolt) {
              ((IBolt) _task_obj).cleanup();
          }
  
          if (_task_obj instanceof ISpout) {
              ((ISpout) _task_obj).close();
          }
      }
  
      @Override
      public boolean waiting() {
          return taskStatus.isRun();
      }
  
      public void deactive() {
          if (taskObj instanceof ISpout) {
              taskStatus.setStatus(TaskStatus.PAUSE);
              WorkerClassLoader.switchThreadContext();
  
              try {
                  ((ISpout) taskObj).deactivate();
              } finally {
                  WorkerClassLoader.restoreThreadContext();
              }
          } else {
              taskStatus.setStatus(TaskStatus.PAUSE);
          }
      }
  
      public void active() {
          if (taskObj instanceof ISpout) {
              taskStatus.setStatus(TaskStatus.RUN);
              WorkerClassLoader.switchThreadContext();
              try {
                  ((ISpout) taskObj).activate();
              } finally {
                  WorkerClassLoader.restoreThreadContext();
              }
          } else {
              taskStatus.setStatus(TaskStatus.RUN);
          }
      }
  
      public void update(Map conf) {
          if (taskObj instanceof IDynamicComponent) {
              ((IDynamicComponent) taskObj).update(conf);
          } else {
              if (task.getBaseExecutors() != null) {
                  task.getBaseExecutors().update(conf);
              }
          }
      }
  
      @Override
      public void run() {
          shutdown();
      }
  
      public int getTaskId() {
          return this.taskId;
      }
  
      public Task getTask() {
          return this.task;
      }
  
  }
  