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1
22 package org.jboss.test.cluster.web;
23
24 import java.io.IOException  ;
25 import java.io.PrintWriter ;
26 import java.net.InetAddress ;
27 import javax.servlet.http.HttpServlet ;
28 import javax.servlet.http.HttpServletRequest ;
29 import javax.servlet.http.HttpServletResponse ;
30 import javax.servlet.http.HttpSession ;
31 import javax.servlet.ServletException ;
32 import javax.servlet.ServletConfig ;
33
34 import org.jboss.logging.Logger;
35
36
40 public class StatefulSessionServlet extends HttpServlet
41 {
42 private static Logger log = Logger.getLogger(StatefulSessionServlet.class);
43 private boolean synchSessionAccess;
44
45 public void init(ServletConfig servletConfig) throws ServletException
46 {
47 super.init(servletConfig);
48 String flag = servletConfig.getInitParameter("synchSessionAccess");
49 synchSessionAccess = Boolean.valueOf(flag).booleanValue();
50 }
51
52 protected void doGet(HttpServletRequest request, HttpServletResponse response)
53 throws ServletException , IOException
54 {
55 handleRequest(request, response);
56 }
57
58 protected void doPost(HttpServletRequest request, HttpServletResponse response)
59 throws ServletException , IOException
60 {
61 handleRequest(request, response);
62 }
63
64 private void handleRequest(HttpServletRequest request, HttpServletResponse response)
65 throws IOException
66 {
67 HttpSession session = request.getSession();
68 log.info("handleRequest, session="+session.getId());
69 SessionValue value = null;
70 if( synchSessionAccess )
71 {
72 synchronized( session )
73 {
74 value = (SessionValue) session.getAttribute("TheSessionKey");
75 }
76 }
77 else
78 {
79 value = (SessionValue) session.getAttribute("TheSessionKey");
80 }
81
82 SessionValue prevValue = null;
83 if( value == null )
84 {
85 value = new SessionValue();
86 }
87 else
88 {
89 prevValue = new SessionValue();
90 prevValue.accessCount = value.accessCount;
91 prevValue.username = value.username;
92 prevValue.lastAccessHost = value.lastAccessHost;
93 }
94 value.accessCount ++;
95 value.username = request.getRemoteUser();
96 value.lastAccessHost = request.getServerName();
97 if( synchSessionAccess )
98 {
99 synchronized( session )
100 {
101 session.setAttribute("TheSessionKey", value);
102 }
103 }
104 else
105 {
106 session.setAttribute("TheSessionKey", value);
107 }
108 log.info(value);
109
110 PrintWriter pw = response.getWriter();
111 response.setContentType("text/html");
112 response.addIntHeader("X-AccessCount", value.accessCount);
113 pw.write("<html>\n");
114 String node = InetAddress.getLocalHost().getHostName();
115 pw.write("<head><title>StatefulSessionServlet on: "+node+"</title></head>\n");
116 pw.write("<body><h1>StatefulSessionServlet on: "+node+"</h1>\n");
117 pw.write("<h2>SessionID: "+session.getId()+"</h2>\n");
118 pw.write("<pre>\n");
119 pw.write(value.toString());
120 pw.write("\n</pre>\n");
121 if( prevValue != null )
122 {
123 pw.write("<pre>\n");
124 pw.write(prevValue.toString());
125 pw.write("\n</pre>\n");
126 }
127 pw.write("</body>\n");
128 pw.write("</html>\n");
129 }
130 }
131 |
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