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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.api.processor;
8   
9   import org.mule.api.MuleEvent;
10  import org.mule.api.MuleException;
11  
12  /**
13   * Processes {@link MuleEvent}'s. Implementations that do not mutate the
14   * {@link MuleEvent} or pass it on to another MessageProcessor should return the
15   * MuleEvent they receive.
16   * 
17   * @since 3.0
18   */
19  public interface MessageProcessor
20  {
21      /**
22       * Invokes the MessageProcessor.
23       * 
24       * @param event MuleEvent to be processed
25       * @return optional response MuleEvent
26       * @throws MuleException
27       */
28      MuleEvent process(MuleEvent event) throws MuleException;
29  }