1   /**
2    * Copyright (c) 2000-2008 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.bean.InitializingBean;
26  import com.liferay.portal.kernel.cache.MultiVMPool;
27  import com.liferay.portal.kernel.cache.PortalCache;
28  import com.liferay.portal.kernel.servlet.ImageServletToken;
29  import com.liferay.portal.kernel.util.StringPool;
30  import com.liferay.portal.servlet.filters.layoutcache.LayoutCacheUtil;
31  import com.liferay.portlet.journalcontent.util.JournalContentUtil;
32  
33  /**
34   * <a href="ImageServletTokenImpl.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class ImageServletTokenImpl
40      implements ImageServletToken, InitializingBean {
41  
42      public static final String CACHE_NAME = ImageServletToken.class.getName();
43  
44      public void afterPropertiesSet() {
45          _cache = _multiVMPool.getCache(CACHE_NAME);
46      }
47  
48      public String getToken(long imageId) {
49          String key = _encodeKey(imageId);
50  
51          String token = (String)_multiVMPool.get(_cache, key);
52  
53          if (token == null) {
54              token = _createToken(imageId);
55  
56              _multiVMPool.put(_cache, key, token);
57          }
58  
59          return token;
60      }
61  
62      public void resetToken(long imageId) {
63          String key = _encodeKey(imageId);
64  
65          _cache.remove(key);
66  
67          // Journal content
68  
69          JournalContentUtil.clearCache();
70  
71          // Layout cache
72  
73          LayoutCacheUtil.clearCache();
74      }
75  
76      public void setMultiVMPool(MultiVMPool multiVMPool) {
77          _multiVMPool = multiVMPool;
78      }
79  
80      private String _createToken(long imageId) {
81          return String.valueOf(System.currentTimeMillis());
82      }
83  
84      private String _encodeKey(long imageId) {
85          StringBuilder sb = new StringBuilder();
86  
87          sb.append(CACHE_NAME);
88          sb.append(StringPool.POUND);
89          sb.append(imageId);
90  
91          return sb.toString();
92      }
93  
94      private MultiVMPool _multiVMPool;
95      private PortalCache _cache;
96  
97  }