| ImageServletTokenImpl.java |
1 /**
2 * Copyright (c) 2000-2007 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.cms.servlet.CMSServletUtil;
26 import com.liferay.portal.kernel.cache.MultiVMPoolUtil;
27 import com.liferay.portal.kernel.cache.PortalCache;
28 import com.liferay.portal.kernel.servlet.ImageServletToken;
29 import com.liferay.portal.kernel.util.StringMaker;
30 import com.liferay.portal.kernel.util.StringPool;
31 import com.liferay.portal.servlet.filters.layoutcache.LayoutCacheUtil;
32 import com.liferay.portlet.journalcontent.util.JournalContentUtil;
33
34 /**
35 * <a href="ImageServletTokenImpl.java.html"><b><i>View Source</i></b></a>
36 *
37 * @author Brian Wing Shun Chan
38 *
39 */
40 public class ImageServletTokenImpl implements ImageServletToken {
41
42 public static final String CACHE_NAME = ImageServletToken.class.getName();
43
44 public String getToken(long imageId) {
45 String key = _encodeKey(imageId);
46
47 String token = (String)MultiVMPoolUtil.get(_cache, key);
48
49 if (token == null) {
50 token = _createToken(imageId);
51
52 MultiVMPoolUtil.put(_cache, key, token);
53 }
54
55 return token;
56 }
57
58 public void resetToken(long imageId) {
59 String key = _encodeKey(imageId);
60
61 _cache.remove(key);
62
63 // CMS
64
65 CMSServletUtil.clearCache();
66
67 // Journal content
68
69 JournalContentUtil.clearCache();
70
71 // Layout cache
72
73 LayoutCacheUtil.clearCache();
74 }
75
76 private String _createToken(long imageId) {
77 return String.valueOf(System.currentTimeMillis());
78 }
79
80 private String _encodeKey(long imageId) {
81 StringMaker sm = new StringMaker();
82
83 sm.append(CACHE_NAME);
84 sm.append(StringPool.POUND);
85 sm.append(imageId);
86
87 return sm.toString();
88 }
89
90 private static PortalCache _cache = MultiVMPoolUtil.getCache(CACHE_NAME);
91
92 }