57 lines
2.0 KiB
Java
57 lines
2.0 KiB
Java
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/*
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* Copyright 2012 Brian Rosenberger (Brutex Network)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.brutex.xservices.util.cache;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ThreadFactory;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletContextEvent;
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import javax.servlet.ServletContextListener;
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/**
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* @author Brian Rosenberger, bru(at)brutex.de
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* @since 0.5.0-20120825
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*/
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public class CacheExecutorService implements ServletContextListener {
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static final String EXECUTOR_NAME = "CACHE_EXECUTOR";
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private ExecutorService executor;
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public void contextInitialized(ServletContextEvent arg0) {
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ServletContext context = arg0.getServletContext();
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int nr_executors = 1;
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ThreadFactory daemonFactory = new DaemonThreadFactory();
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try {
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nr_executors = Integer.parseInt(context.getInitParameter("cache:thread-count"));
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} catch (NumberFormatException ignore ) {}
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if(nr_executors <= 1) {
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executor = Executors.newSingleThreadExecutor(daemonFactory);
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} else {
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executor = Executors.newFixedThreadPool(nr_executors,daemonFactory);
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}
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context.setAttribute(EXECUTOR_NAME, executor);
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}
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public void contextDestroyed(ServletContextEvent arg0) {
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ServletContext context = arg0.getServletContext();
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executor.shutdownNow(); // or process/wait until all pending jobs are done
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}
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}
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