move files with mule

Question

I want to use Mule for moving and processing files. I'm trying to move the same file to different folders with a flow and an "all router" but it fails.

This works:

    <flow name="testflow2Flow1" doc:name="testflow2Flow1">
    <file:inbound-endpoint path="C:\IN" fileAge="10000" responseTimeout="10000" doc:name="File"/>
    <set-variable variableName="tempfilename" value="#[header:originalFilename]" doc:name="Variable"/>
    <file:outbound-endpoint path="C:\OUT" responseTimeout="10000" doc:name="File"/>
</flow>

But this don't!

    <flow name="testflow2Flow1" doc:name="testflow2Flow1">
    <file:inbound-endpoint path="C:\IN" fileAge="10000" responseTimeout="10000" doc:name="File"/>
    <set-variable variableName="tempfilename" value="#[header:originalFilename]" doc:name="Variable"/>
    <all doc:name="All">
        <processor-chain>
            <file:outbound-endpoint path="C:\OUT" responseTimeout="10000" doc:name="File"/>
        </processor-chain>
    </all>
</flow>

I get this exception:

INFO 2013-10-03 20:22:19,072 [[testflow2].connector.file.mule.default.receiver.01] org.mule.transport.file.FileMessageReceiver: Lock obtained on file: C:\IN\test.txt.txt ERROR 2013-10-03 20:22:19,088 [[testflow2].testflow2Flow1.stage1.02] org.mule.exception.DefaultMessagingExceptionStrategy:

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Message : Cannot copy message with a stream payload. Payload type is "org.mule.transport.file.ReceiverFileInputStream". Message payload is of type: ReceiverFileInputStream

Code : MULE_ERROR--2

Exception stack is: 1. Cannot copy message with a stream payload. Payload type is "org.mule.transport.file.ReceiverFileInputStream". Message payload is of type: ReceiverFileInputStream (org.mule.api.MessagingException)

org.mule.routing.outbound.AbstractSequenceRouter:74 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/MessagingException.html)

Root Exception stack trace: org.mule.api.MessagingException: Cannot copy message with a stream payload. Payload type is "org.mule.transport.file.ReceiverFileInputStream". Message payload is of type: ReceiverFileInputStream at org.mule.routing.outbound.AbstractSequenceRouter.route(AbstractSequenceRouter.java:74) at org.mule.routing.outbound.AbstractOutboundRouter$1.process(AbstractOutboundRouter.java:105) at org.mule.routing.outbound.AbstractOutboundRouter$1.process(AbstractOutboundRouter.java:100) + 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)

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Answer 1

Adding this <object-to-byte-array-transformer/> transformer after your inbound endpoint will make it work.

<flow name="testflow2Flow1" doc:name="testflow2Flow1">
    <file:inbound-endpoint path="C:\IN" fileAge="10000" responseTimeout="10000" doc:name="File"/>
    <object-to-byte-array-transformer/>
    <set-variable variableName="tempfilename" value="#[header:originalFilename]" doc:name="Variable"/>
    <all doc:name="All">            
        <file:outbound-endpoint path="C:\OUT" responseTimeout="10000" doc:name="File"/>
        <file:outbound-endpoint path="C:\OUT1" responseTimeout="10000" doc:name="File"/>        
    </all>
</flow>

I think why it failed is because mule was trying to read file as stream and write as stream; which was fine in your 1st case.

But in second flow because you want to write to more than one place, thats not possible with streaming. With addition of this transformer, now you have complete payload in memory and that can be written to more than one.