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1   /*
2    * $Id: SerializeAndEncodeSessionHandler.java 22686 2011-08-16 19:39:20Z pablo.lagreca $
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.session;
12  
13  import org.mule.api.MuleException;
14  import org.mule.api.MuleMessage;
15  import org.mule.api.MuleSession;
16  import org.mule.api.config.MuleProperties;
17  import org.mule.api.model.SessionException;
18  import org.mule.config.i18n.MessageFactory;
19  import org.mule.util.Base64;
20  import org.mule.util.SerializationUtils;
21  
22  import java.io.IOException;
23  
24  /**
25   * A session handler used to store and retrieve session information on an
26   * event. The DefaultMuleSession information is stored as a header on the message (does not
27   * support Tcp, Udp, etc. unless the MuleMessage object is serialised across the
28   * wire). The session is stored in the "MULE_SESSION" property as Base64 encoded
29   * byte array.
30   */
31  public class SerializeAndEncodeSessionHandler extends SerializeOnlySessionHandler
32  {
33      @Override
34      public MuleSession retrieveSessionInfoFromMessage(MuleMessage message) throws MuleException
35      {
36          MuleSession session = null;
37          String serializedEncodedSession = message.getInboundProperty(MuleProperties.MULE_SESSION_PROPERTY);
38          
39          if (serializedEncodedSession != null)
40          {
41              byte[] serializedSession = Base64.decode(serializedEncodedSession);            
42              if (serializedSession != null)
43              {
44                  session = (MuleSession) SerializationUtils.deserialize(serializedSession, message.getMuleContext());
45              }
46          }
47          return session;
48      }
49  
50      @Override
51      public void storeSessionInfoToMessage(MuleSession session, MuleMessage message) throws MuleException
52      {        
53          byte[] serializedSession = SerializationUtils.serialize(removeNonSerializableProperties(session,message.getMuleContext()));
54          String serializedEncodedSession;
55          try
56          {
57              serializedEncodedSession = Base64.encodeBytes(serializedSession, Base64.DONT_BREAK_LINES);
58          }
59          catch (IOException e)
60          {
61              throw new SessionException(MessageFactory.createStaticMessage("Unable to serialize MuleSession"), e);
62          }
63          
64          if (logger.isDebugEnabled())
65          {
66              logger.debug("Adding serialized and base64-encoded Session header to message: " + serializedEncodedSession);
67          }
68          message.setOutboundProperty(MuleProperties.MULE_SESSION_PROPERTY, serializedEncodedSession);
69      }
70  }