| ImageServletTokenImpl.java |
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 }