01: /**
02: * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
03: *
04: * Permission is hereby granted, free of charge, to any person obtaining a copy
05: * of this software and associated documentation files (the "Software"), to deal
06: * in the Software without restriction, including without limitation the rights
07: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
08: * copies of the Software, and to permit persons to whom the Software is
09: * 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: */package com.liferay.portal.servlet;
22:
23: import com.liferay.portal.cms.servlet.CMSServletUtil;
24: import com.liferay.portal.kernel.cache.MultiVMPoolUtil;
25: import com.liferay.portal.kernel.cache.PortalCache;
26: import com.liferay.portal.kernel.servlet.ImageServletToken;
27: import com.liferay.portal.kernel.util.StringMaker;
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
41: .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: // CMS
63:
64: CMSServletUtil.clearCache();
65:
66: // Journal content
67:
68: JournalContentUtil.clearCache();
69:
70: // Layout cache
71:
72: LayoutCacheUtil.clearCache();
73: }
74:
75: private String _createToken(long imageId) {
76: return String.valueOf(System.currentTimeMillis());
77: }
78:
79: private String _encodeKey(long imageId) {
80: StringMaker sm = new StringMaker();
81:
82: sm.append(CACHE_NAME);
83: sm.append(StringPool.POUND);
84: sm.append(imageId);
85:
86: return sm.toString();
87: }
88:
89: private static PortalCache _cache = MultiVMPoolUtil
90: .getCache(CACHE_NAME);
91:
92: }
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