| DoubleClickFilter.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.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 public class DoubleClickFilter extends BasePortalFilter {
45
46 protected void processFilter(
47 HttpServletRequest request, HttpServletResponse response,
48 FilterChain filterChain)
49 throws Exception {
50
51 StopWatch stopWatch = null;
52
53 if (_log.isDebugEnabled()) {
54 stopWatch = new StopWatch();
55
56 stopWatch.start();
57 }
58
59 HttpSession session = request.getSession(false);
60
61 if (session == null) {
62 processFilter(
63 DoubleClickFilter.class, request, response, filterChain);
64 }
65 else {
66 DoubleClickController controller = null;
67
68 synchronized (session) {
69 controller = (DoubleClickController)session.getAttribute(
70 _CONTROLLER_KEY);
71
72 if (controller == null) {
73 controller = new DoubleClickController();
74
75 session.setAttribute(_CONTROLLER_KEY, controller);
76 }
77 }
78
79 boolean ok = false;
80
81 try {
82 controller.control(request, response, filterChain);
83
84 ok = true;
85 }
86 finally {
87 if (_log.isDebugEnabled()) {
88 String completeURL = HttpUtil.getCompleteURL(request);
89
90 if (ok) {
91 _log.debug(
92 "Double click prevention succeded in " +
93 stopWatch.getTime() + " ms for " + completeURL);
94 }
95 else {
96 _log.debug(
97 "Double click prevention failed in " +
98 stopWatch.getTime() + " ms for " + completeURL);
99 }
100 }
101 }
102 }
103 }
104
105 private static final String _CONTROLLER_KEY =
106 DoubleClickFilter.class.getName();
107
108 private static Log _log = LogFactoryUtil.getLog(DoubleClickFilter.class);
109
110 }