Changeset 13122

Timestamp:

2006-10-17T15:37:03+13:00 (18 years ago)

Author:

shaoqun

Message:

added the code to use log4j and LibraryServelt writes usage info to web/logs/usage.log

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/LibraryServlet.java (modified) (4 diffs)

trunk/gsdl3/src/java/org/greenstone/gsdl3/LibraryServlet.java

@@ -14 +14 @@
 import java.util.HashMap;
 import java.io.File;
+
+import org.apache.log4j.*;
 
 /** a servlet to serve the greenstone library - we are using servlets instead
@@ -46 +48 @@
     protected int next_user_id = 0;
 
-    
+    static Category logger = Category.getInstance(org.greenstone.gsdl3.LibraryServlet.class.getName());
+
     /** initialise the servlet
      */
@@ -55 +58 @@
     //System.setProperty("java.util.prefs.PreferencesFactory", "org.greenstone.gsdl3.util.DisabledPreferencesFactory");
 
+    
     String library_name = config.getInitParameter(GSConstants.LIBRARY_NAME);
     String gsdl3_home = config.getInitParameter(GSConstants.GSDL3_HOME);
@@ -175 +179 @@
     
     }
-    
+
+
+    private void logUsageInfo(HttpServletRequest request){
+    String usageInfo = "";
+
+    //session-info: get params stored in the session
+    HttpSession session = request.getSession(true);
+        Enumeration attributeNames = session.getAttributeNames();
+    while(attributeNames.hasMoreElements()) {
+        String name = (String)attributeNames.nextElement();
+        usageInfo +=name+"="+session.getAttribute(name)+" ";
+    }
+    
+    //logged info = general-info + session-info
+    usageInfo = 
+        request.getServletPath()+" "+ //serlvet
+        "["+request.getQueryString()+"]" +" "+ //the query string
+        "["+usageInfo.trim()+"]" +" "+ // params stored in a session
+        request.getRemoteAddr()+" "+   //remote address                  
+        request.getRequestedSessionId()+" "+ //session id
+        request.getHeader("user-agent")+" "; //the remote brower info                      
+                         
+    logger.info(usageInfo);
+
+    }
+
+       
     public void doGet(HttpServletRequest request,
               HttpServletResponse response)
     throws ServletException, IOException {
-    
+
+    logUsageInfo(request);
+          
+    // Nested Diagnostic Configurator to identify the client for
        
     HttpSession session = request.getSession(true);