| /** |
| * 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.task; |
| |
| import backtype.storm.spout.ISpout; |
| import backtype.storm.task.IBolt; |
| 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.utils.JStormUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * shutdown one task |
| * |
| * @author yannian/Longda |
| */ |
| public class TaskShutdownDameon implements ShutdownableDameon { |
| private static Logger LOG = LoggerFactory.getLogger(TaskShutdownDameon.class); |
| |
| public static final byte QUIT_MSG = (byte) 0xff; |
| |
| private Task task; |
| private TaskStatus taskStatus; |
| private String topology_id; |
| private Integer task_id; |
| private List<AsyncLoopThread> all_threads; |
| private StormClusterState zkCluster; |
| private Object task_obj; |
| private boolean isClosed = false; |
| |
| public TaskShutdownDameon(TaskStatus taskStatus, String topology_id, Integer task_id, List<AsyncLoopThread> all_threads, StormClusterState zkCluster, |
| Object task_obj, Task task) { |
| this.taskStatus = taskStatus; |
| this.topology_id = topology_id; |
| this.task_id = task_id; |
| this.all_threads = all_threads; |
| this.zkCluster = zkCluster; |
| this.task_obj = task_obj; |
| this.task = task; |
| } |
| |
| @Override |
| public void shutdown() { |
| synchronized (this) { |
| if (isClosed == true) { |
| return; |
| } |
| isClosed = true; |
| } |
| |
| LOG.info("Begin to shut down task " + topology_id + ":" + task_id); |
| |
| // all thread will check the taskStatus |
| // once it has been set SHUTDOWN, it will quit |
| taskStatus.setStatus(TaskStatus.SHUTDOWN); |
| |
| // waiting 100ms for executor thread shutting it's own |
| try { |
| Thread.sleep(100); |
| } catch (InterruptedException e) { |
| } |
| |
| for (AsyncLoopThread thr : all_threads) { |
| 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()); |
| } |
| |
| closeComponent(task_obj); |
| |
| try { |
| zkCluster.disconnect(); |
| } catch (Exception e) { |
| LOG.error("Failed to disconnect zk for task-" + task_id); |
| } |
| |
| LOG.info("Successfully shutdown task " + topology_id + ":" + task_id); |
| |
| } |
| |
| public void join() throws InterruptedException { |
| for (AsyncLoopThread t : all_threads) { |
| 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 (task_obj instanceof ISpout) { |
| taskStatus.setStatus(TaskStatus.PAUSE); |
| WorkerClassLoader.switchThreadContext(); |
| |
| try { |
| ((ISpout) task_obj).deactivate(); |
| } finally { |
| WorkerClassLoader.restoreThreadContext(); |
| } |
| } |
| |
| } |
| |
| public void active() { |
| if (task_obj instanceof ISpout) { |
| taskStatus.setStatus(TaskStatus.RUN); |
| WorkerClassLoader.switchThreadContext(); |
| try { |
| ((ISpout) task_obj).activate(); |
| } finally { |
| WorkerClassLoader.restoreThreadContext(); |
| } |
| } |
| } |
| |
| public void update(Map conf) { |
| if (task_obj instanceof IDynamicComponent) { |
| ((IDynamicComponent) task_obj).update(conf); |
| } |
| } |
| |
| @Override |
| public void run() { |
| shutdown(); |
| } |
| |
| public int getTaskId() { |
| return this.task_id; |
| } |
| |
| public Task getTask() { |
| return this.task; |
| } |
| } |