| DoubleClickFilter.java |
1 /**
2 * Copyright (c) 2000-2009 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.filters.doubleclick;
24
25 import com.liferay.portal.kernel.log.Log;
26 import com.liferay.portal.kernel.log.LogFactoryUtil;
27 import com.liferay.portal.kernel.util.HttpUtil;
28 import com.liferay.portal.servlet.filters.BasePortalFilter;
29
30 import javax.servlet.FilterChain;
31 import javax.servlet.http.HttpServletRequest;
32 import javax.servlet.http.HttpServletResponse;
33 import javax.servlet.http.HttpSession;
34
35 import org.apache.commons.lang.time.StopWatch;
36
37 /**
38 * <a href="DoubleClickFilter.java.html"><b><i>View Source</i></b></a>
39 *
40 * @author Olaf Fricke
41 * @author Brian Wing Shun Chan
42 * @author Raymond Augé
43 *
44 */
45 public class DoubleClickFilter extends BasePortalFilter {
46
47 protected void processFilter(
48 HttpServletRequest request, HttpServletResponse response,
49 FilterChain filterChain)
50 throws Exception {
51
52 StopWatch stopWatch = null;
53
54 if (_log.isDebugEnabled()) {
55 stopWatch = new StopWatch();
56
57 stopWatch.start();
58 }
59
60 HttpSession session = request.getSession(false);
61
62 if (session == null) {
63 processFilter(
64 DoubleClickFilter.class, request, response, filterChain);
65 }
66 else {
67 DoubleClickController controller = null;
68
69 synchronized (session) {
70 controller = (DoubleClickController)session.getAttribute(
71 _CONTROLLER_KEY);
72
73 if (controller == null) {
74 controller = new DoubleClickController();
75
76 session.setAttribute(_CONTROLLER_KEY, controller);
77 }
78 }
79
80 boolean ok = false;
81
82 try {
83 controller.control(request, response, filterChain);
84
85 ok = true;
86 }
87 finally {
88 if (_log.isDebugEnabled()) {
89 String completeURL = HttpUtil.getCompleteURL(request);
90
91 if (ok) {
92 _log.debug(
93 "Double click prevention succeded in " +
94 stopWatch.getTime() + " ms for " + completeURL);
95 }
96 else {
97 _log.debug(
98 "Double click prevention failed in " +
99 stopWatch.getTime() + " ms for " + completeURL);
100 }
101 }
102 }
103 }
104 }
105
106 private static final String _CONTROLLER_KEY =
107 DoubleClickFilter.class.getName();
108
109 private static Log _log = LogFactoryUtil.getLog(DoubleClickFilter.class);
110
111 }