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package org.mule.routing.outbound; |
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import org.mule.DefaultMuleMessage; |
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import org.mule.api.ExceptionPayload; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.endpoint.OutboundEndpoint; |
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import org.mule.api.expression.RequiredValueException; |
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import org.mule.api.routing.CouldNotRouteOutboundMessageException; |
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import org.mule.api.routing.RoutePathNotFoundException; |
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import org.mule.api.routing.RoutingException; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.routing.CorrelationMode; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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|
33 | 0 | public class ExceptionBasedRouter extends ExpressionRecipientList |
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{ |
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@Override |
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public MuleEvent route(MuleEvent event) throws RoutingException |
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{ |
38 | 0 | MuleMessage message = event.getMessage(); |
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|
40 | 0 | List recipients = null; |
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try |
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{ |
43 | 0 | recipients = getRecipients(event); |
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} |
45 | 0 | catch (RequiredValueException e) |
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{ |
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|
48 | 0 | } |
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|
50 | 0 | if (recipients == null) |
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{ |
52 | 0 | int endpointsCount = routes.size(); |
53 | 0 | recipients = new ArrayList(endpointsCount); |
54 | 0 | for (int i = 0; i < endpointsCount; i++) |
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{ |
56 | 0 | recipients.add(getRoute(i, event)); |
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} |
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} |
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|
60 | 0 | if (recipients.size() == 0) |
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{ |
62 | 0 | throw new RoutePathNotFoundException(CoreMessages.noEndpointsForRouter(), event, null); |
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} |
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|
65 | 0 | if (enableCorrelation != CorrelationMode.NEVER) |
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{ |
67 | 0 | boolean correlationSet = message.getCorrelationId() != null; |
68 | 0 | if (correlationSet && (enableCorrelation == CorrelationMode.IF_NOT_SET)) |
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{ |
70 | 0 | logger.debug("CorrelationId is already set, not setting Correlation group size"); |
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} |
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else |
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{ |
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|
75 | 0 | message.setCorrelationGroupSize(recipients.size()); |
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} |
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} |
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|
79 | 0 | MuleEvent result = null; |
80 | 0 | OutboundEndpoint endpoint = null; |
81 | 0 | MuleMessage request = null; |
82 | 0 | boolean success = false; |
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|
84 | 0 | for (Iterator iterator = recipients.iterator(); iterator.hasNext();) |
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{ |
86 | 0 | request = new DefaultMuleMessage(message.getPayload(), message, muleContext); |
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try |
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{ |
89 | 0 | endpoint = getRecipientEndpoint(request, iterator.next()); |
90 | 0 | boolean lastEndpoint = !iterator.hasNext(); |
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|
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|
93 | 0 | if (!lastEndpoint && !endpoint.getExchangePattern().hasResponse()) |
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{ |
95 | 0 | throw new CouldNotRouteOutboundMessageException( |
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MessageFactory.createStaticMessage("The ExceptionBasedRouter does not support asynchronous endpoints, make sure all endpoints on the router are configured as synchronous"), event, endpoint); |
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} |
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|
99 | 0 | if (endpoint.getExchangePattern().hasResponse()) |
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{ |
101 | 0 | MuleMessage resultMessage = null; |
102 | 0 | result = sendRequest(event, request, endpoint, true); |
103 | 0 | if (result != null) |
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{ |
105 | 0 | resultMessage = result.getMessage(); |
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} |
107 | 0 | if (resultMessage != null) |
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{ |
109 | 0 | resultMessage.applyTransformers(result, endpoint.getResponseTransformers()); |
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} |
111 | 0 | if (!exceptionPayloadAvailable(resultMessage)) |
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{ |
113 | 0 | if (logger.isDebugEnabled()) |
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{ |
115 | 0 | logger.debug("Successful invocation detected, stopping further processing."); |
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} |
117 | 0 | success = true; |
118 | 0 | break; |
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} |
120 | 0 | } |
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else |
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{ |
123 | 0 | sendRequest(event, request, endpoint, false); |
124 | 0 | success = true; |
125 | 0 | break; |
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} |
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} |
128 | 0 | catch (MuleException e) |
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{ |
130 | 0 | logger.info("Failed to send/dispatch to endpoint: " + endpoint.getEndpointURI().toString() |
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+ ". Error was: " + e.getMessage() + ". Trying next endpoint"); |
132 | 0 | } |
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} |
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|
135 | 0 | if (!success) |
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{ |
137 | 0 | throw new CouldNotRouteOutboundMessageException(event, endpoint); |
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} |
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|
140 | 0 | return result; |
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} |
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protected boolean exceptionPayloadAvailable(MuleMessage message) |
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{ |
149 | 0 | if (message == null) |
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{ |
151 | 0 | return false; |
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} |
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|
154 | 0 | final ExceptionPayload exceptionPayload = message.getExceptionPayload(); |
155 | 0 | if (exceptionPayload != null) |
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{ |
157 | 0 | logger.info("Failure returned, will try next endpoint. Exception payload is: " + exceptionPayload); |
158 | 0 | return true; |
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} |
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else |
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{ |
162 | 0 | return false; |
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} |
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} |
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|
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} |