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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.jetspeed.pipeline.valve.impl;
18  
19  import javax.servlet.http.HttpServletRequest;
20  
21  import org.apache.commons.logging.Log;
22  import org.apache.commons.logging.LogFactory;
23  import org.apache.jetspeed.pipeline.PipelineException;
24  import org.apache.jetspeed.pipeline.valve.AbstractValve;
25  import org.apache.jetspeed.pipeline.valve.ValveContext;
26  import org.apache.jetspeed.request.RequestContext;
27  
28  /***
29   * <p>
30   * Debug Valve
31   * </p>
32   * 
33   * @author <a href="mailto:weaver@apache.org">Scott T. Weaver</a>
34   * @version $Id: $
35   *
36   */
37  public class DebugValveImpl extends AbstractValve 
38  {
39      private static final Log log = LogFactory.getLog(DebugValveImpl.class);
40  
41      public DebugValveImpl()
42      {
43      }
44  
45      public void invoke(RequestContext request, ValveContext context) throws PipelineException
46      {     
47          debugHeaders(request.getRequest());
48          context.invokeNext(request);
49      }
50  
51      /***
52       * @see java.lang.Object#toString()
53       */
54      public String toString()
55      {
56          return "DebugValveImpl";
57      }
58      
59      private void debugHeaders( HttpServletRequest req )
60      {
61          log.info("-- Jetspeed Debug Valve: Debugging standard headers --");
62          java.util.Enumeration e = req.getHeaderNames();
63          while (e.hasMoreElements())
64          {
65              String name = (String) e.nextElement();
66              String value = req.getHeader(name);
67              log.info("http header = " + name + " : " + value);
68  //            System.out.println("http header = " + name + " : " + value);            
69          }
70      }
71  }