org.jboss.remotingjmx.protocol.v2.ClientExecutorManager Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.remotingjmx.protocol.v2;

import java.util.Map;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * A wrapper around the executor so it can be passed between the steps.
 *
 * @author Darran Lofthouse
 */
class ClientExecutorManager {

    private static final String REMOTING_JMX = "remoting-jmx";
    private static final String CLIENT_THREAD = "client-thread-";
    private static final AtomicInteger THREAD_NUMBER = new AtomicInteger(1);

    private boolean manageExecutor = false;
    private final Executor executor;

    ClientExecutorManager(final Map environment) {
        if (environment != null && environment.containsKey(Executor.class.getName())) {
            executor = (Executor) environment.get(Executor.class.getName());
        } else {
            executor = Executors.newCachedThreadPool(new ThreadFactory() {

                final ThreadGroup group = new ThreadGroup(REMOTING_JMX);

                public Thread newThread(Runnable r) {
                    group.setDaemon(true);
                    return new Thread(group, r, REMOTING_JMX + " " + CLIENT_THREAD + THREAD_NUMBER.getAndIncrement());
                }
            });
            manageExecutor = true;
        }
    }

    void execute(final Runnable runnable) {
        executor.execute(runnable);
    }

    void close() {
        if (manageExecutor && executor instanceof ExecutorService) {
            ((ExecutorService) executor).shutdown();
        }
    }

}