| package org.apache.helix.task; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.Map; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.ThreadFactory; |
| |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import javax.management.JMException; |
| import org.apache.helix.HelixManager; |
| import org.apache.helix.monitoring.mbeans.ThreadPoolExecutorMonitor; |
| import org.apache.helix.participant.statemachine.StateModelFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Factory class for {@link TaskStateModel}. |
| */ |
| public class TaskStateModelFactory extends StateModelFactory<TaskStateModel> { |
| private static Logger LOG = LoggerFactory.getLogger(TaskStateModelFactory.class); |
| |
| private final HelixManager _manager; |
| private final Map<String, TaskFactory> _taskFactoryRegistry; |
| private final ScheduledExecutorService _taskExecutor; |
| private final ScheduledExecutorService _timerTaskExecutor; |
| private ThreadPoolExecutorMonitor _monitor; |
| public final static int TASK_THREADPOOL_SIZE = 40; |
| |
| public TaskStateModelFactory(HelixManager manager, Map<String, TaskFactory> taskFactoryRegistry) { |
| this(manager, taskFactoryRegistry, |
| Executors.newScheduledThreadPool(TASK_THREADPOOL_SIZE, new ThreadFactory() { |
| private AtomicInteger threadId = new AtomicInteger(0); |
| @Override public Thread newThread(Runnable r) { |
| return new Thread(r, "TaskStateModelFactory-task_thread-" + threadId.getAndIncrement()); |
| } |
| })); |
| } |
| |
| public TaskStateModelFactory(HelixManager manager, Map<String, TaskFactory> taskFactoryRegistry, |
| ScheduledExecutorService taskExecutor) { |
| _manager = manager; |
| _taskFactoryRegistry = taskFactoryRegistry; |
| _taskExecutor = taskExecutor; |
| _timerTaskExecutor = Executors.newSingleThreadScheduledExecutor(new ThreadFactory() { |
| @Override public Thread newThread(Runnable r) { |
| return new Thread(r, "TaskStateModelFactory-timeTask_thread"); |
| } |
| }); |
| if (_taskExecutor instanceof ThreadPoolExecutor) { |
| try { |
| _monitor = new ThreadPoolExecutorMonitor(TaskConstants.STATE_MODEL_NAME, |
| (ThreadPoolExecutor) _taskExecutor); |
| } catch (JMException e) { |
| LOG.warn("Error in creating ThreadPoolExecutorMonitor for TaskStateModelFactory."); |
| } |
| } |
| } |
| |
| @Override |
| public TaskStateModel createNewStateModel(String resourceName, String partitionKey) { |
| return new TaskStateModel(_manager, _taskFactoryRegistry, _taskExecutor, _timerTaskExecutor); |
| } |
| |
| public void shutdown() { |
| if (_monitor != null) { |
| _monitor.unregister(); |
| } |
| _taskExecutor.shutdown(); |
| _timerTaskExecutor.shutdown(); |
| if (_monitor != null ) { |
| _monitor.unregister(); |
| } |
| } |
| |
| public boolean isShutdown() { |
| return _taskExecutor.isShutdown(); |
| } |
| |
| public boolean isTerminated() { |
| return _taskExecutor.isTerminated(); |
| } |
| } |