| /* |
| * 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.sling.event.impl; |
| |
| import org.apache.sling.commons.threads.ModifiableThreadPoolConfig; |
| import org.apache.sling.commons.threads.ThreadPool; |
| import org.apache.sling.commons.threads.ThreadPoolConfig; |
| import org.apache.sling.commons.threads.ThreadPoolConfig.ThreadPriority; |
| import org.apache.sling.commons.threads.ThreadPoolManager; |
| import org.osgi.framework.Constants; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Modified; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferencePolicyOption; |
| import org.osgi.service.metatype.annotations.AttributeDefinition; |
| import org.osgi.service.metatype.annotations.Designate; |
| import org.osgi.service.metatype.annotations.ObjectClassDefinition; |
| |
| |
| /** |
| * The configurable eventing thread pool. |
| */ |
| @Component(service = EventingThreadPool.class, |
| property = { |
| Constants.SERVICE_VENDOR + "=The Apache Software Foundation" |
| }) |
| @Designate(ocd = EventingThreadPool.Config.class) |
| public class EventingThreadPool implements ThreadPool { |
| |
| @ObjectClassDefinition(name = "Apache Sling Job Thread Pool", |
| description="This is the thread pool used by the Apache Sling job handling. The " |
| + "threads from this pool are merely used for executing jobs. By limiting this pool, it is " |
| + "possible to limit the maximum number of parallel processed jobs - regardless of the queue " |
| + "configuration.") |
| public @interface Config { |
| |
| @AttributeDefinition(name = "Pool Size", |
| description="The size of the thread pool. This pool is used to execute jobs and therefore " |
| + "limits the maximum number of jobs executed in parallel.") |
| int minPoolSize() default 35; |
| } |
| |
| @Reference(policyOption=ReferencePolicyOption.GREEDY) |
| private ThreadPoolManager threadPoolManager; |
| |
| /** The real thread pool used. */ |
| private org.apache.sling.commons.threads.ThreadPool threadPool; |
| |
| public EventingThreadPool() { |
| // default constructor |
| } |
| |
| public EventingThreadPool(final ThreadPoolManager tpm, final int poolSize) { |
| this.threadPoolManager = tpm; |
| this.configure(poolSize); |
| } |
| |
| public void release() { |
| this.deactivate(); |
| } |
| |
| /** |
| * Activate this component. |
| */ |
| @Activate |
| @Modified |
| protected void activate(final Config config) { |
| this.configure(config.minPoolSize()); |
| } |
| |
| private void configure(final int maxPoolSize) { |
| final ModifiableThreadPoolConfig config = new ModifiableThreadPoolConfig(); |
| config.setMinPoolSize(maxPoolSize); |
| config.setMaxPoolSize(config.getMinPoolSize()); |
| config.setQueueSize(-1); // unlimited |
| config.setShutdownGraceful(true); |
| config.setPriority(ThreadPriority.NORM); |
| config.setDaemon(true); |
| this.threadPool = threadPoolManager.create(config, "Apache Sling Job Thread Pool"); |
| } |
| |
| /** |
| * Deactivate this component. |
| */ |
| @Deactivate |
| protected void deactivate() { |
| this.threadPoolManager.release(this.threadPool); |
| } |
| |
| /** |
| * @see org.apache.sling.commons.threads.ThreadPool#execute(java.lang.Runnable) |
| */ |
| @Override |
| public void execute(final Runnable runnable) { |
| threadPool.execute(runnable); |
| } |
| |
| /** |
| * @see org.apache.sling.commons.threads.ThreadPool#getConfiguration() |
| */ |
| @Override |
| public ThreadPoolConfig getConfiguration() { |
| return threadPool.getConfiguration(); |
| } |
| |
| /** |
| * @see org.apache.sling.commons.threads.ThreadPool#getName() |
| */ |
| @Override |
| public String getName() { |
| return threadPool.getName(); |
| } |
| } |