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From Claus Ibsen <claus.ib...@gmail.com>
Subject Re: Concurrency Issue with camel-validation
Date Fri, 24 Apr 2009 12:41:58 GMT
On Fri, Apr 24, 2009 at 2:33 PM, raulvk.soa <raulvk.soa@gmail.com> wrote:
>
> Hi Claus,
>
> Ticket created: https://issues.apache.org/activemq/browse/CAMEL-1565.
>
> Any ideas on a temporary workaround while the fix is found?
You could try to create your own component that extends the one in Camel.

There is a doStart() you can override if you want to load the schema
at start time.
Remember to invoke super.doStart() as well.


>
> Many thanks!
>
>
> Claus Ibsen-2 wrote:
>>
>> Hi
>>
>> Could you create a ticket in JIRA for this.
>>
>> Link to jira from here:
>> http://camel.apache.org/support.html
>>
>> Then we wont forget and will be able to put in a fix
>>
>> On Fri, Apr 24, 2009 at 11:53 AM, raulvk.soa <raulvk.soa@gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> I have a Camel flow which seems to be experimenting concurrency issues
>>> with
>>> the camel-validation component. This flow is invoked twice in parallel by
>>> a
>>> splitter.
>>>
>>> It seems like the camel-validation component lazily-loads the XSD, when
>>> the
>>> first request comes in.
>>> As a consequence, when two simultaneous requests are received, it
>>> attempts
>>> to load the XSD twice at the same time, possibly using the same
>>> SchemaFactory, which may not be thread-safe.
>>>
>>> Any ideas on how to tell Camel to load the XSD on initialization of the
>>> flow, instead of on the first request?
>>>
>>> Many thanks!
>>>
>>> ---------------------------
>>>
>>> Dump of the stack trace:
>>>
>>> 10:38:20,860 | ERROR - org.apache.camel.processor.DeadLetterChannel -
>>> org.apache.camel.processor.Logger - Failed delivery for exchangeId:
>>> ID-ATOS-B624
>>> E47AF0/3211-1240562892751/0-11. On delivery attempt: 0 caught:
>>> org.xml.sax.SAXException: FWK005 parse may not be called while parsing.
>>> org.xml.sax.SAXException: FWK005 parse may not be called while parsing.
>>>        at
>>> com.sun.org.apache.xerces.internal.jaxp.validation.Util.toSAXException(Util.java:62)
>>>        at
>>> com.sun.org.apache.xerces.internal.jaxp.validation.XMLSchemaFactory.newSchema(XMLSchemaFactory.java:214)
>>>        at
>>> javax.xml.validation.SchemaFactory.newSchema(SchemaFactory.java:594)
>>>        at
>>> org.apache.camel.processor.validation.ValidatingProcessor.createSchema(ValidatingProcessor.java:204)
>>>        at
>>> org.apache.camel.processor.validation.ValidatingProcessor.getSchema(ValidatingProcessor.java:118)
>>>        at
>>> org.apache.camel.processor.validation.ValidatingProcessor.process(ValidatingProcessor.java:54)
>>>        at
>>> org.apache.camel.impl.ProcessorEndpoint.onExchange(ProcessorEndpoint.java:92)
>>>        at
>>> org.apache.camel.impl.ProcessorEndpoint$1.process(ProcessorEndpoint.java:66)
>>>        at
>>> org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsyncProcessorBridge.process(AsyncProcessorTypeConverter.java:43)
>>>        at
>>> org.apache.camel.processor.SendProcessor.process(SendProcessor.java:75)
>>>        at
>>> org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:57)
>>>        at
>>> org.apache.camel.processor.DeadLetterChannel.process(DeadLetterChannel.java:155)
>>>        at
>>> org.apache.camel.processor.DeadLetterChannel.process(DeadLetterChannel.java:91)
>>>        at org.apache.camel.processor.Pipeline.process(Pipeline.java:101)
>>>        at org.apache.camel.processor.Pipeline.process(Pipeline.java:85)
>>>        at
>>> org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:57)
>>> --
>>> View this message in context:
>>> http://www.nabble.com/Concurrency-Issue-with-camel-validation-tp23213294p23213294.html
>>> Sent from the Camel - Users mailing list archive at Nabble.com.
>>>
>>>
>>
>>
>>
>> --
>> Claus Ibsen
>> Apache Camel Committer
>>
>> Open Source Integration: http://fusesource.com
>> Blog: http://davsclaus.blogspot.com/
>> Twitter: http://twitter.com/davsclaus
>> Apache Camel Reference Card:
>> http://refcardz.dzone.com/refcardz/enterprise-integration
>>
>>
>
> --
> View this message in context: http://www.nabble.com/Concurrency-Issue-with-camel-validation-tp23213294p23215582.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
>
>



-- 
Claus Ibsen
Apache Camel Committer

Open Source Integration: http://fusesource.com
Blog: http://davsclaus.blogspot.com/
Twitter: http://twitter.com/davsclaus
Apache Camel Reference Card:
http://refcardz.dzone.com/refcardz/enterprise-integration

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