Coverage Report - org.mule.routing.outbound.ExceptionBasedRouter
 
Classes in this File Line Coverage Branch Coverage Complexity
ExceptionBasedRouter
0%
0/57
0%
0/38
0
 
 1  
 /*
 2  
  * $Id: ExceptionBasedRouter.java 19855 2010-10-06 19:50:56Z 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.routing.outbound;
 12  
 
 13  
 import org.mule.DefaultMuleMessage;
 14  
 import org.mule.api.ExceptionPayload;
 15  
 import org.mule.api.MuleEvent;
 16  
 import org.mule.api.MuleException;
 17  
 import org.mule.api.MuleMessage;
 18  
 import org.mule.api.endpoint.OutboundEndpoint;
 19  
 import org.mule.api.expression.RequiredValueException;
 20  
 import org.mule.api.routing.CouldNotRouteOutboundMessageException;
 21  
 import org.mule.api.routing.RoutePathNotFoundException;
 22  
 import org.mule.api.routing.RoutingException;
 23  
 import org.mule.config.i18n.CoreMessages;
 24  
 import org.mule.config.i18n.MessageFactory;
 25  
 import org.mule.routing.CorrelationMode;
 26  
 
 27  
 import java.util.ArrayList;
 28  
 import java.util.Iterator;
 29  
 import java.util.List;
 30  
 
 31  
 /**
 32  
  * <code>ExceptionBasedRouter</code> Will send the current event to the first
 33  
  * endpoint that doesn't throw an exception. If all attempted targets fail then an
 34  
  * exception is thrown. <p/> The router will override the sync/async mode of the
 35  
  * endpoint and force the sync mode for all targets except the last one.
 36  
  */
 37  0
 public class ExceptionBasedRouter extends ExpressionRecipientList
 38  
 {
 39  
     @Override
 40  
     public MuleEvent route(MuleEvent event) throws RoutingException
 41  
     {
 42  0
         MuleMessage message = event.getMessage();
 43  
 
 44  0
         List recipients = null;
 45  
         try
 46  
         {
 47  0
             recipients = getRecipients(event);
 48  
         }
 49  0
         catch (RequiredValueException e)
 50  
         {
 51  
             // ignore because the recipient list is optional for this router
 52  0
         }
 53  
 
 54  0
         if (recipients == null)
 55  
         {
 56  0
             int endpointsCount = routes.size();
 57  0
             recipients = new ArrayList(endpointsCount);
 58  0
             for (int i = 0; i < endpointsCount; i++)
 59  
             {
 60  0
                 recipients.add(getRoute(i, event));
 61  
             }
 62  
         }        
 63  
         
 64  0
         if (recipients.size() == 0)
 65  
         {
 66  0
             throw new RoutePathNotFoundException(CoreMessages.noEndpointsForRouter(), event, null);
 67  
         }
 68  
 
 69  0
         if (enableCorrelation != CorrelationMode.NEVER)
 70  
         {
 71  0
             boolean correlationSet = message.getCorrelationId() != null;
 72  0
             if (correlationSet && (enableCorrelation == CorrelationMode.IF_NOT_SET))
 73  
             {
 74  0
                 logger.debug("CorrelationId is already set, not setting Correlation group size");
 75  
             }
 76  
             else
 77  
             {
 78  
                 // the correlationId will be set by the AbstractOutboundRouter
 79  0
                 message.setCorrelationGroupSize(recipients.size());
 80  
             }
 81  
         }
 82  
 
 83  0
         MuleEvent result = null;
 84  0
         OutboundEndpoint endpoint = null;
 85  0
         MuleMessage request = null;
 86  0
         boolean success = false;
 87  
 
 88  0
         for (Iterator iterator = recipients.iterator(); iterator.hasNext();)
 89  
         {
 90  0
             request = new DefaultMuleMessage(message.getPayload(), message, muleContext);
 91  
             try
 92  
             {
 93  0
                 endpoint = getRecipientEndpoint(request, iterator.next());
 94  0
                 boolean lastEndpoint = !iterator.hasNext();
 95  
     
 96  
                 // TODO MULE-4476
 97  0
                 if (!lastEndpoint && !endpoint.getExchangePattern().hasResponse())
 98  
                 {
 99  0
                     throw new CouldNotRouteOutboundMessageException(
 100  
                         MessageFactory.createStaticMessage("The ExceptionBasedRouter does not support asynchronous endpoints, make sure all endpoints on the router are configured as synchronous"), event, endpoint);
 101  
                 }
 102  
                 
 103  0
                 if (endpoint.getExchangePattern().hasResponse())
 104  
                 {
 105  0
                     MuleMessage resultMessage = null;
 106  0
                     result = sendRequest(event, request, endpoint, true);
 107  0
                     if (result != null)
 108  
                     {
 109  0
                         resultMessage = result.getMessage();
 110  
                     }
 111  0
                     if (resultMessage != null)
 112  
                     {
 113  0
                         resultMessage.applyTransformers(result, endpoint.getResponseTransformers());
 114  
                     }
 115  0
                     if (!exceptionPayloadAvailable(resultMessage))
 116  
                     {
 117  0
                         if (logger.isDebugEnabled())
 118  
                         {
 119  0
                             logger.debug("Successful invocation detected, stopping further processing.");
 120  
                         }
 121  0
                         success = true;
 122  0
                         break;
 123  
                     }
 124  0
                 }
 125  
                 else
 126  
                 {
 127  0
                     sendRequest(event, request, endpoint, false);
 128  0
                     success = true;
 129  0
                     break;
 130  
                 }
 131  
             }
 132  0
             catch (MuleException e)
 133  
             {
 134  0
                 logger.info("Failed to send/dispatch to endpoint: " + endpoint.getEndpointURI().toString()
 135  
                             + ". Error was: " + e.getMessage() + ". Trying next endpoint");
 136  0
             }
 137  
         }
 138  
 
 139  0
         if (!success)
 140  
         {
 141  0
             throw new CouldNotRouteOutboundMessageException(event, endpoint);
 142  
         }
 143  
 
 144  0
         return result;
 145  
     }
 146  
 
 147  
     /**
 148  
      * @param message message to check
 149  
      * @return true if there was an exception payload set
 150  
      */
 151  
     protected boolean exceptionPayloadAvailable(MuleMessage message)
 152  
     {
 153  0
         if (message == null)
 154  
         {
 155  0
             return false;
 156  
         }
 157  
 
 158  0
         final ExceptionPayload exceptionPayload = message.getExceptionPayload();
 159  0
         if (exceptionPayload != null)
 160  
         {
 161  0
             logger.info("Failure returned, will try next endpoint. Exception payload is: " + exceptionPayload);
 162  0
             return true;
 163  
         }
 164  
         else
 165  
         {
 166  0
             return false;
 167  
         }
 168  
     }
 169  
     
 170  
 }