| ImageServletTokenImpl.java |
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.cache.MultiVMPoolUtil;
26 import com.liferay.portal.kernel.cache.PortalCache;
27 import com.liferay.portal.kernel.servlet.ImageServletToken;
28 import com.liferay.portal.kernel.util.StringMaker;
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 implements ImageServletToken {
40
41 public static final String CACHE_NAME = ImageServletToken.class.getName();
42
43 public String getToken(long imageId) {
44 String key = _encodeKey(imageId);
45
46 String token = (String)MultiVMPoolUtil.get(_cache, key);
47
48 if (token == null) {
49 token = _createToken(imageId);
50
51 MultiVMPoolUtil.put(_cache, key, token);
52 }
53
54 return token;
55 }
56
57 public void resetToken(long imageId) {
58 String key = _encodeKey(imageId);
59
60 _cache.remove(key);
61
62 // Journal content
63
64 JournalContentUtil.clearCache();
65
66 // Layout cache
67
68 LayoutCacheUtil.clearCache();
69 }
70
71 private String _createToken(long imageId) {
72 return String.valueOf(System.currentTimeMillis());
73 }
74
75 private String _encodeKey(long imageId) {
76 StringMaker sm = new StringMaker();
77
78 sm.append(CACHE_NAME);
79 sm.append(StringPool.POUND);
80 sm.append(imageId);
81
82 return sm.toString();
83 }
84
85 private static PortalCache _cache = MultiVMPoolUtil.getCache(CACHE_NAME);
86
87 }