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