| /* |
| * 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 org.apache.chemistry.opencmis.server.async.impl; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import javax.servlet.AsyncContext; |
| |
| import org.apache.chemistry.opencmis.server.async.AsyncCmisExecutor; |
| |
| /** |
| * A simple {@link AsyncCmisExecutor} implementation that uses a |
| * {@code ThreadPoolExecutor} for executing asynchronous CMIS requests. |
| */ |
| public class SimpleAsyncCmisExecutor implements AsyncCmisExecutor { |
| |
| private static int cmisThreadInitNumber = 0; |
| |
| private ExecutorService executorService; |
| private long timeout; |
| |
| public SimpleAsyncCmisExecutor() { |
| executorService = createExecutorService(); |
| timeout = 24 * 60 * 60 * 1000; // 24 hours |
| } |
| |
| private static synchronized int nextThreadNum() { |
| return cmisThreadInitNumber++; |
| } |
| |
| /** |
| * Creates an ExecutorService instance. |
| */ |
| private ExecutorService createExecutorService() { |
| final ThreadGroup threadGroup = new ThreadGroup("cmis-thread-group"); |
| final ThreadFactory threadFactory = new ThreadFactory() { |
| @Override |
| public Thread newThread(Runnable r) { |
| return new Thread(threadGroup, r, "cmis-" + nextThreadNum()); |
| } |
| }; |
| |
| int processors = Runtime.getRuntime().availableProcessors(); |
| int maximumPoolSize = processors * 100; |
| int corePoolSize = processors; |
| int queueSize = maximumPoolSize / 2; |
| |
| ThreadPoolExecutor threadPoolexecutor = new ThreadPoolExecutor(corePoolSize, maximumPoolSize, 60L, |
| TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>(queueSize), threadFactory); |
| |
| return threadPoolexecutor; |
| } |
| |
| /** |
| * Waits until all running threads are stopped. |
| */ |
| public void destroy() { |
| executorService.shutdown(); |
| } |
| |
| /** |
| * Gets the timeout for the AsyncContext. |
| * |
| * @return the timeout in milliseconds |
| */ |
| public long getTimeout() { |
| return timeout; |
| } |
| |
| /** |
| * Sets the timeout for the AsyncContext. |
| * |
| * @param timeout |
| * the timeout in milliseconds |
| * |
| * @see AsyncContext#setTimeout(long) |
| */ |
| public void setTimeout(long timeout) { |
| this.timeout = timeout; |
| } |
| |
| @Override |
| public void execute(AsyncContext asyncContext, Runnable runable) { |
| asyncContext.setTimeout(timeout); |
| asyncContext.addListener(new SimpleCmisAsyncListener()); |
| |
| executorService.submit(runable); |
| } |
| } |