001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.webserver;
016    
017    import com.liferay.portal.kernel.cache.MultiVMPool;
018    import com.liferay.portal.kernel.cache.PortalCache;
019    import com.liferay.portal.kernel.security.pacl.DoPrivileged;
020    import com.liferay.portal.servlet.filters.cache.CacheUtil;
021    
022    /**
023     * @author Brian Wing Shun Chan
024     * @since  6.1, replaced com.liferay.portal.servlet.ImageServletTokenImpl
025     */
026    @DoPrivileged
027    public class WebServerServletTokenImpl implements WebServerServletToken {
028    
029            public void afterPropertiesSet() {
030                    _portalCache = (PortalCache<Long, String>)_multiVMPool.getCache(
031                            _CACHE_NAME);
032            }
033    
034            @Override
035            public String getToken(long imageId) {
036                    Long key = imageId;
037    
038                    String token = _portalCache.get(key);
039    
040                    if (token == null) {
041                            token = _createToken();
042    
043                            _portalCache.put(key, token);
044                    }
045    
046                    return token;
047            }
048    
049            @Override
050            public void resetToken(long imageId) {
051                    _portalCache.remove(imageId);
052    
053                    // Layout cache
054    
055                    CacheUtil.clearCache();
056            }
057    
058            public void setMultiVMPool(MultiVMPool multiVMPool) {
059                    _multiVMPool = multiVMPool;
060            }
061    
062            private String _createToken() {
063                    return String.valueOf(System.currentTimeMillis());
064            }
065    
066            private static final String _CACHE_NAME =
067                    WebServerServletToken.class.getName();
068    
069            private MultiVMPool _multiVMPool;
070            private PortalCache<Long, String> _portalCache;
071    
072    }