com.kurento.kmf.content.internal.ContentApiExecutorService.java Source code

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Here is the source code for com.kurento.kmf.content.internal.ContentApiExecutorService.java

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/*
 * (C) Copyright 2013 Kurento (http://kurento.org/)
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License
 * (LGPL) version 2.1 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl-2.1.html
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 */
package com.kurento.kmf.content.internal;

import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;

import com.kurento.kmf.content.ContentApiConfiguration;

/**
 * Thread pool within Content Management.
 * 
 * @author Luis Lpez (llopez@gsyc.es)
 * @version 1.0.0
 */
public class ContentApiExecutorService {

    /**
     * Thread pool implementation.
     */
    private ThreadPoolExecutor executor;

    /**
     * Autowired configuration.
     */
    @Autowired
    @Qualifier("contentApiConfiguration")
    private ContentApiConfiguration config;

    /**
     * Default constructor.
     */
    public ContentApiExecutorService() {
    }

    /**
     * Post constructor method; instantiate thread pool.
     * 
     * @throws Exception
     *             Error in the creation of the thread pool
     */
    @PostConstruct
    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(config.getPoolCoreSize(), config.getPoolMaxSize(),
                config.getPoolExecutionTimeout(), TimeUnit.MILLISECONDS,
                new LinkedBlockingQueue<Runnable>(config.getPoolMaxQueueSize()), new RejectedExecutionHandler() {
                    @Override
                    public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
                        ((RejectableRunnable) r).onExecutionRejected();
                    }
                });
    }

    /**
     * Pre destroy method; shutdown the thread pool.
     * 
     * @throws Exception
     *             Problem while shutting down thread
     */
    @PreDestroy
    public void destroy() throws Exception {
        executor.shutdown();
    }

    /**
     * Getter (accessor) of the thread pool (executor).
     * 
     * @return Thread pool (executor)
     */
    public ThreadPoolExecutor getExecutor() {
        return executor;
    }
}