| ImageServletTokenImpl.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 package com.liferay.portal.servlet;
21
22 import com.liferay.portal.kernel.cache.MultiVMPool;
23 import com.liferay.portal.kernel.cache.PortalCache;
24 import com.liferay.portal.kernel.servlet.ImageServletToken;
25 import com.liferay.portal.kernel.util.StringPool;
26 import com.liferay.portal.servlet.filters.cache.CacheUtil;
27 import com.liferay.portlet.journalcontent.util.JournalContentUtil;
28
29 /**
30 * <a href="ImageServletTokenImpl.java.html"><b><i>View Source</i></b></a>
31 *
32 * @author Brian Wing Shun Chan
33 *
34 */
35 public class ImageServletTokenImpl implements ImageServletToken {
36
37 public static final String CACHE_NAME = ImageServletToken.class.getName();
38
39 public void afterPropertiesSet() {
40 _cache = _multiVMPool.getCache(CACHE_NAME);
41 }
42
43 public String getToken(long imageId) {
44 String key = _encodeKey(imageId);
45
46 String token = (String)_multiVMPool.get(_cache, key);
47
48 if (token == null) {
49 token = _createToken(imageId);
50
51 _multiVMPool.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 CacheUtil.clearCache();
69 }
70
71 public void setMultiVMPool(MultiVMPool multiVMPool) {
72 _multiVMPool = multiVMPool;
73 }
74
75 private String _createToken(long imageId) {
76 return String.valueOf(System.currentTimeMillis());
77 }
78
79 private String _encodeKey(long imageId) {
80 StringBuilder sb = new StringBuilder();
81
82 sb.append(CACHE_NAME);
83 sb.append(StringPool.POUND);
84 sb.append(imageId);
85
86 return sb.toString();
87 }
88
89 private MultiVMPool _multiVMPool;
90 private PortalCache _cache;
91
92 }