| ImageServletTokenImpl.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights 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.MultiVMPool;
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.cache.CacheUtil;
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 public class ImageServletTokenImpl implements ImageServletToken {
38
39 public static final String CACHE_NAME = ImageServletToken.class.getName();
40
41 public void afterPropertiesSet() {
42 _cache = _multiVMPool.getCache(CACHE_NAME);
43 }
44
45 public String getToken(long imageId) {
46 String key = _encodeKey(imageId);
47
48 String token = (String)_multiVMPool.get(_cache, key);
49
50 if (token == null) {
51 token = _createToken(imageId);
52
53 _multiVMPool.put(_cache, key, token);
54 }
55
56 return token;
57 }
58
59 public void resetToken(long imageId) {
60 String key = _encodeKey(imageId);
61
62 _cache.remove(key);
63
64 // Journal content
65
66 JournalContentUtil.clearCache();
67
68 // Layout cache
69
70 CacheUtil.clearCache();
71 }
72
73 public void setMultiVMPool(MultiVMPool multiVMPool) {
74 _multiVMPool = multiVMPool;
75 }
76
77 private String _createToken(long imageId) {
78 return String.valueOf(System.currentTimeMillis());
79 }
80
81 private String _encodeKey(long imageId) {
82 StringBuilder sb = new StringBuilder();
83
84 sb.append(CACHE_NAME);
85 sb.append(StringPool.POUND);
86 sb.append(imageId);
87
88 return sb.toString();
89 }
90
91 private MultiVMPool _multiVMPool;
92 private PortalCache _cache;
93
94 }