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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
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 * 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:
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 *
 * Modifications:
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package org.glassfish.jersey.server.internal.inject;

import java.io.Closeable;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.inject.Inject;

import org.glassfish.jersey.process.internal.RequestScoped;
import org.glassfish.jersey.server.CloseableService;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.internal.LocalizationMessages;

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

/**
 * Binder and Factory implementations for {@code CloseableService}.
 *
 * @author Michal Gajdos (michal.gajdos at oracle.com)
 */
public class CloseableServiceBinder extends AbstractBinder {

    /**
     * {@code CloseableService} implementation that stores instances of {@code Closeable} into the properties map obtained from
     * {@code HttpContext}.
     */
    private static class DefaultCloseableService implements CloseableService {

        private final static Logger LOGGER = Logger.getLogger(DefaultCloseableService.class.getName());

        private final ContainerRequest containerRequest;

        @Inject
        public DefaultCloseableService(final ContainerRequest containerRequest) {
            this.containerRequest = containerRequest;
        }

        @Override
        public void add(Closeable c) {
            Set closeableSet = getCloseables();

            if (closeableSet == null) {
                closeableSet = new HashSet();
                containerRequest.setProperty(DefaultCloseableService.class.getName(), closeableSet);
            }

            closeableSet.add(c);
        }

        @Override
        public void close() {
            final Set closeableSet = getCloseables();

            if (closeableSet != null) {
                for (Closeable c : closeableSet) {
                    try {
                        c.close();
                    } catch (Exception ex) {
                        LOGGER.log(Level.SEVERE, LocalizationMessages.CLOSEABLE_UNABLE_TO_CLOSE(c.getClass().getName()), ex);
                    }
                }
            }
        }

        @SuppressWarnings("unchecked")
        private Set getCloseables() {
            if (containerRequest == null) {
                LOGGER.warning(LocalizationMessages.CLOSEABLE_INJECTED_REQUEST_CONTEXT_NULL(Thread.currentThread().getName()));
                return null;
            }

            return (Set) containerRequest.getProperty(DefaultCloseableService.class.getName());
        }

    }

    @Override
    protected void configure() {
        bind(DefaultCloseableService.class).to(CloseableService.class).in(RequestScoped.class);
    }

}