1
19
20 package com.liferay.portal.servlet.filters.doubleclick;
21
22 import com.liferay.portal.kernel.log.Log;
23 import com.liferay.portal.kernel.log.LogFactoryUtil;
24 import com.liferay.portal.kernel.util.HttpUtil;
25 import com.liferay.portal.servlet.filters.BasePortalFilter;
26
27 import java.io.IOException;
28
29 import javax.servlet.FilterChain;
30 import javax.servlet.ServletException;
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
45 public class DoubleClickFilter extends BasePortalFilter {
46
47 protected void processFilter(
48 HttpServletRequest request, HttpServletResponse response,
49 FilterChain filterChain)
50 throws IOException, ServletException {
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 }