1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet;
24  
25  import com.liferay.portal.kernel.cache.MultiVMPool;
26  import com.liferay.portal.kernel.cache.PortalCache;
27  import com.liferay.portal.kernel.servlet.ImageServletToken;
28  import com.liferay.portal.kernel.util.StringPool;
29  import com.liferay.portal.servlet.filters.cache.CacheUtil;
30  import com.liferay.portlet.journalcontent.util.JournalContentUtil;
31  
32  /**
33   * <a href="ImageServletTokenImpl.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Brian Wing Shun Chan
36   *
37   */
38  public class ImageServletTokenImpl implements ImageServletToken {
39  
40      public static final String CACHE_NAME = ImageServletToken.class.getName();
41  
42      public void afterPropertiesSet() {
43          _cache = _multiVMPool.getCache(CACHE_NAME);
44      }
45  
46      public String getToken(long imageId) {
47          String key = _encodeKey(imageId);
48  
49          String token = (String)_multiVMPool.get(_cache, key);
50  
51          if (token == null) {
52              token = _createToken(imageId);
53  
54              _multiVMPool.put(_cache, key, token);
55          }
56  
57          return token;
58      }
59  
60      public void resetToken(long imageId) {
61          String key = _encodeKey(imageId);
62  
63          _cache.remove(key);
64  
65          // Journal content
66  
67          JournalContentUtil.clearCache();
68  
69          // Layout cache
70  
71          CacheUtil.clearCache();
72      }
73  
74      public void setMultiVMPool(MultiVMPool multiVMPool) {
75          _multiVMPool = multiVMPool;
76      }
77  
78      private String _createToken(long imageId) {
79          return String.valueOf(System.currentTimeMillis());
80      }
81  
82      private String _encodeKey(long imageId) {
83          StringBuilder sb = new StringBuilder();
84  
85          sb.append(CACHE_NAME);
86          sb.append(StringPool.POUND);
87          sb.append(imageId);
88  
89          return sb.toString();
90      }
91  
92      private MultiVMPool _multiVMPool;
93      private PortalCache _cache;
94  
95  }