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Java > Open Source Codes > org > jboss > aspects > logging > InvocationLogClientInterceptor


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.aspects.logging;
23
24 import org.apache.log4j.Logger;
25 import org.apache.log4j.spi.LoggingEvent;
26 import org.jboss.aop.util.PayloadKey;
27
28 import java.io.Serializable JavaDoc;
29 import java.util.ArrayList JavaDoc;
30 import java.util.Iterator JavaDoc;
31
32 /**
33  * An interceptor that tests dumps any logging into the
34  * invocation response
35  *
36  * @author <a HREF="mailto:adrian@jboss">Adrian Brock</a>.
37  * @version $Revision: 37406 $
38  */
39 public class InvocationLogClientInterceptor
40    implements org.jboss.aop.advice.Interceptor, Serializable JavaDoc
41 {
42    // Constants -----------------------------------------------------
43
44    private static final long serialVersionUID = 9191894622629072033L;
45
46    // Attributes ----------------------------------------------------
47
48    // Static --------------------------------------------------------
49
50    // Constructors --------------------------------------------------
51
52    // Public --------------------------------------------------------
53
54    // Interceptor Implementation ------------------------------------
55
56    public String JavaDoc getName()
57    {
58       return "InvocationLogClientInterceptor";
59    }
60
61    /**
62     * @todo remove the hardwiring of the meta data (needs next invocation metadata)
63     */
64    public Object JavaDoc invoke(org.jboss.aop.joinpoint.Invocation invocation)
65       throws Throwable JavaDoc
66    {
67       // TODO: This should be set by the caller when required
68 invocation.getMetaData().addMetaData(ThreadLocalAppender.LOG, ThreadLocalAppender.LOG, "Log", PayloadKey.AS_IS);
69
70       // Perform the invocation and dump any attached log
71 Object JavaDoc response = invocation.invokeNext();
72       if (response != null)
73          dumpLog(invocation);
74       return response;
75    }
76
77    public void dumpLog(org.jboss.aop.joinpoint.Invocation invocation)
78    {
79       Logger root = Logger.getRootLogger();
80       ArrayList JavaDoc list = (ArrayList JavaDoc) invocation.getResponseAttachment(ThreadLocalAppender.LOG);
81       for (Iterator JavaDoc i = list.iterator(); i.hasNext();)
82           root.callAppenders((LoggingEvent) i.next());
83    }
84
85    // Y Overrides ---------------------------------------------------
86
87    // Protected -----------------------------------------------------
88
89    // Private -------------------------------------------------------
90
91    // Inner Classes -------------------------------------------------
92 }
93
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