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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2014 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
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 *
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 */
package org.glassfish.jersey.server;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.glassfish.jersey.process.internal.RequestExecutorFactory;
import org.glassfish.jersey.server.spi.Container;
import org.glassfish.jersey.server.spi.ContainerLifecycleListener;
import org.glassfish.jersey.spi.RequestExecutorProvider;

import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.utilities.binding.AbstractBinder;

import jersey.repackaged.com.google.common.util.concurrent.ThreadFactoryBuilder;

/**
 * {@link org.glassfish.jersey.process.internal.RequestExecutorFactory Executors factory}
 * used on the server side for managed asynchronous request invocations.
 *
 * @author Miroslav Fuksa (miroslav.fuksa at oracle.com)
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
class ServerManagedAsyncExecutorFactory extends RequestExecutorFactory implements ContainerLifecycleListener {

    /**
     * Server managed asynchronous request executor factory injection binder.
     */
    static class Binder extends AbstractBinder {

        @Override
        protected void configure() {
            bind(ServerManagedAsyncExecutorFactory.class)
                    .to(RequestExecutorFactory.class)
                    .to(ContainerLifecycleListener.class)
                    .in(Singleton.class);
        }
    }

    /**
     * Creates a new instance.
     *
     * @param locator HK2 service locator.
     */
    @Inject
    public ServerManagedAsyncExecutorFactory(ServiceLocator locator) {
        super(locator);
    }

    @Override
    protected RequestExecutorProvider getDefaultProvider(Object... initArgs) {
        return new RequestExecutorProvider() {

            @Override
            public ExecutorService getRequestingExecutor() {
                return Executors.newCachedThreadPool(
                        new ThreadFactoryBuilder().setNameFormat("jersey-server-managed-async-executor-%d").build());
            }

            @Override
            public void releaseRequestingExecutor(ExecutorService executor) {
                executor.shutdownNow();
            }
        };
    }

    @Override
    public void onStartup(Container container) {
        // do nothing
    }

    @Override
    public void onReload(Container container) {
        // do nothing
    }

    @Override
    public void onShutdown(Container container) {
        close();
    }
}