Subversion Repositories XServices

/*

 *   Copyright 2013 Brian Rosenberger (Brutex Network)

 *

 *   Licensed 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 net.brutex.xservices.util.cache;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.ThreadFactory;

import javax.servlet.ServletContext;

import javax.servlet.ServletContextEvent;

import javax.servlet.ServletContextListener;

/**

 * @author Brian Rosenberger, bru(at)brutex.de

 *

 */

public class CacheExecutorService

  implements ServletContextListener

{

  static final String EXECUTOR_NAME = "CACHE_EXECUTOR";

  private ExecutorService executor;

  public void contextInitialized(ServletContextEvent arg0)

  {

    ServletContext context = arg0.getServletContext();

    int nr_executors = 5;

    ThreadFactory daemonFactory = new DaemonThreadFactory();

    try {

      nr_executors = Integer.parseInt(context.getInitParameter("cache:thread-count"));

    } catch (NumberFormatException localNumberFormatException) {

    }

    if (nr_executors <= 1)

      this.executor = Executors.newSingleThreadExecutor(daemonFactory);

    else {

      this.executor = Executors.newFixedThreadPool(nr_executors, daemonFactory);

    }

    context.setAttribute("CACHE_EXECUTOR", this.executor);

  }

  public void contextDestroyed(ServletContextEvent arg0) {

    ServletContext context = arg0.getServletContext();

    this.executor.shutdownNow();

  }

}