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1   /*
2    * $Id: LoggingInterceptor.java 20406 2010-11-30 17:51:41Z aperepel $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.interceptor;
12  
13  import org.mule.api.MuleEvent;
14  import org.mule.api.MuleException;
15  import org.mule.management.stats.ProcessingTime;
16  
17  import org.apache.commons.logging.Log;
18  import org.apache.commons.logging.LogFactory;
19  
20  /**
21   * <code>LoggingInterceptor</code> is a simple interceptor that logs a message before
22   * and after the event processing.
23   */
24  public class LoggingInterceptor extends AbstractEnvelopeInterceptor
25  {
26      /**
27       * logger used by this class
28       */
29      private static Log logger = LogFactory.getLog(LoggingInterceptor.class);
30  
31      @Override
32      public MuleEvent before(MuleEvent event)
33      {
34          if (logger.isDebugEnabled())
35          {
36              logger.debug("Started event processing for " + event.getFlowConstruct().getName());
37          }
38          return event;
39  
40      }
41  
42      @Override
43      public MuleEvent after(MuleEvent event)
44      {
45          if (logger.isDebugEnabled() && event != null)
46          {
47              logger.debug("Finished event processing for " + event.getFlowConstruct().getName());
48          }
49          return event;
50      }
51  
52      @Override
53      public MuleEvent last(MuleEvent event, ProcessingTime time, long startTime, boolean exceptionWasThrown) throws MuleException
54      {
55          return event;
56      }
57  }