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Posted to user@synapse.apache.org by Matthew Clark <ma...@googlemail.com> on 2012/02/14 00:04:04 UTC
Uncaught exception during response from legacy service - synapse 2.1
Hi all, I'd really appreciate some help with this one... it's hurting my
brain!
We have a legacy service that I would like to include in some of our ESB
operations.
The legacy service uses XML for both request and response payloads making
it a very easy integration.
I've created a very simple proxy service (see below).
The problem I am having is that the legacy service can return some invalid
characters and is causing the stax parser to blow up in such a way that I
can't even handle it gracefully with a fault sequence. I'd really like to
pre-process the responses (before they are parsed/built) as 99% of the time
it is simply a case of replacing characters with numeric character
references or character entity references..
We are unable to modify the legacy service to remove these erroneous
responses.
Heres the proxy config (I said it was simple!!) followed by the Exception
thrown... The exception causes the service to hang and the fault sequence
is only entered after a 60 second timeout.
<proxy xmlns="http://ws.apache.org/ns/synapse" name="legacyservice"
transports="http" startOnLoad="true">
<target endpoint="legacyXMLReceiver">
<inSequence>
<log level="full">
<property name="MESSAGE" value="InSequence" />
</log>
</inSequence>
<outSequence>
<log level="full">
<property name="MESSAGE" value="OutSequence" />
</log>
<send />
</outSequence>
<faultSequence>
<makefault version="soap11">
<code xmlns:soap11Env="
http://schemas.xmlsoap.org/soap/envelope/" value="soap11Env:Server" />
<reason expression="get-property('ERROR_MESSAGE')" />
<role />
</makefault>
<log level="full">
<property name="MESSAGE" value="FaultSequence" />
</log>
<property name="HTTP_SC" value="500" scope="axis2" />
<send />
</faultSequence>
</target>
</proxy>
<endpoint xmlns="http://ws.apache.org/ns/synapse" name="legacyXMLReceiver">
<address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
format="pox" >
</address>
</endpoint>
ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
Uncaught exception
{org.apache.axis2.transport.base.threads.NativeWorkerPool}
*org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException: Invalid
UTF-8 middle byte 0x3c (at char #714, byte #127)*
at
org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
at
org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
at
org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
at
org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
at
org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
at
org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
at
org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
at
org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
at
org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
at
org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuffer.append(StringBuffer.java:219)
at
org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
at
org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
at
org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
at
org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
at
org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
at
org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
at
org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
at
org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at
org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
at
org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
*Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle byte
0x3c (at char #714, byte #127)*
at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
at
org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
at
org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
at
org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
at
org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
at
org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
... 31 more
*Caused by: java.io.CharConversionException: Invalid UTF-8 middle byte 0x3c
(at char #714, byte #127)*
at com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
at
com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
at
com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
at
com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
at
com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
at
com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
at
com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
at
com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Matthew Clark <ma...@googlemail.com>.
Hi - yes sorry I should have been more specific - the invalid characters I
mentioned are invalid for the Content-Type set by the response headers.
We're told to expect UTF-8 yet these characters are from the Latin
character set. Woodstox is justified in throwing an Exception so I really
just want to make sure we're extracting the illegal characters in the most
efficient way.
The easiest/best solution would be to fix the legacy service but we
unfortunately don't have that as an option at this point.. sadly I think
that because this is a content type issue, serialize to string,
extract/replace and deserialize is probably our best option.
Kind Regards
Matthew
On 14 February 2012 18:42, Andreas Veithen <an...@gmail.com>wrote:
> Axiom/Woodstox is of course able to handle special characters,
> provided that it gets the right information about the charset encoding
> of the message. To me this looks like the Content-Type header doesn't
> contain the correct charset encoding.
>
> Andreas
>
> On Tue, Feb 14, 2012 at 17:41, Hiranya Jayathilaka <hi...@gmail.com>
> wrote:
> > Hi Matthew,
> >
> > We use Axiom as the underlying XML infoset. AFAIK it usually works well
> > with special characters. Not sure why it cannot handle this pound sign.
> May
> > be Andreas, can shed some light on the matter? Actually in this case the
> > exception is thrown by the Woodstox parser which is at a layer lower than
> > Axiom. So this could be a Woodstox issue.
> >
> > However if the underlying XML parser cannot handle this payload, then I
> > don't think any of our built-in utils will be able to parse it without
> > throwing an error. So your best option is to serialize this into a string
> > buffer or a byte buffer and run the necessary replacement operations.
> > Anyway lets wait and see what others have to say.
> >
> > Thanks,
> > Hiranya
> >
> > On Tue, Feb 14, 2012 at 7:55 PM, Matthew Clark
> > <ma...@googlemail.com>wrote:
> >
> >> Sure - the service I'm looking at right now is very simple - the input
> just
> >> looks like this:
> >>
> >> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
> >> <function>findOrderByReference</function>
> >> <args>
> >> <arg id="1">SomeRef123</arg>
> >> </args>
> >> </oxxml>
> >>
> >> The response then looks like this (i've removed a large chunk of it":
> >>
> >> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
> >> <response function="findOrderByReference" uuid="4444-4444-4444-4444">
> >> <matches count="1">
> >> <order id="1234567">
> >> <description>Some description including a £ (pound)
> >> sign</description>
> >> </order>
> >> </matches>
> >> </response>
> >> </oxxml>
> >>
> >> The pound sign causes StAX to throw an exception.. so I'd like to
> replace
> >> it as follows:
> >>
> >> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
> >> <response function="findOrderByReference"
> txn-uuid="4444-4444-4444-4444">
> >> <matches count="1">
> >> <order id="1234567">
> >> <description>Some description including a £
> >> (ampersandhash163;)
> >> sign</description>
> >> </order>
> >> </matches>
> >> </response>
> >> </oxxml>
> >>
> >>
> >> On 14 February 2012 13:16, Hiranya Jayathilaka <hi...@gmail.com>
> >> wrote:
> >>
> >> > On Tue, Feb 14, 2012 at 5:01 PM, Matthew Clark
> >> > <ma...@googlemail.com>wrote:
> >> >
> >> > > Hi thanks for that - for some reason I had overlooked the message
> >> > > builders..
> >> > >
> >> > > I have a rudimentary version of this working now but given the
> various
> >> > > classes available (XMLStreamReader, StAXbuilder and so on), what
> would
> >> be
> >> > > the most efficient way to do the replacement?
> >> > >
> >> >
> >> > If the input byte stream contains invalid characters then I don't
> think
> >> you
> >> > can use any of the above classes to process your inputs.
> >> >
> >> >
> >> > >
> >> > > I have about 40 characters (such as the pound sign) that I would
> like
> >> to
> >> > > replace with entity references... For the first version, I simply
> >> > converted
> >> > > to a string used StringUtils.replaceEach() but this is obviously not
> >> > > ideal..
> >> > >
> >> >
> >> > Can you please share an input message and a preprocessed message for
> us
> >> to
> >> > get a better understanding of your requirement?
> >> >
> >> > Thanks,
> >> > Hiranya
> >> >
> >> >
> >> > >
> >> > >
> >> > > On 14 February 2012 04:32, Hiranya Jayathilaka <
> hiranya911@gmail.com>
> >> > > wrote:
> >> > >
> >> > > > Hi Mark,
> >> > > >
> >> > > > If you want to preprocess the responses then I'd recommend you to
> >> > write a
> >> > > > custom message builder. You can register the custom message
> builder
> >> in
> >> > > the
> >> > > > axis2.xml file against the content type of your responses. There
> you
> >> > will
> >> > > > be able to include any custom logic along with code for handling
> >> > invalid
> >> > > > characters in the payload.
> >> > > >
> >> > > > Here are some useful resources I found on the web:
> >> > > >
> >> > > >
> >> > > >
> >> > >
> >> >
> >>
> http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
> >> > > >
> >> > > >
> >> > >
> >> >
> >>
> http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
> >> > > >
> >> > > > Thanks,
> >> > > > Hiranya
> >> > > >
> >> > > > On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
> >> > > > <ma...@googlemail.com>wrote:
> >> > > >
> >> > > > > Hi all, I'd really appreciate some help with this one... it's
> >> hurting
> >> > > my
> >> > > > > brain!
> >> > > > >
> >> > > > > We have a legacy service that I would like to include in some of
> >> our
> >> > > ESB
> >> > > > > operations.
> >> > > > > The legacy service uses XML for both request and response
> payloads
> >> > > making
> >> > > > > it a very easy integration.
> >> > > > >
> >> > > > > I've created a very simple proxy service (see below).
> >> > > > >
> >> > > > > The problem I am having is that the legacy service can return
> some
> >> > > > invalid
> >> > > > > characters and is causing the stax parser to blow up in such a
> way
> >> > > that I
> >> > > > > can't even handle it gracefully with a fault sequence. I'd
> really
> >> > like
> >> > > > to
> >> > > > > pre-process the responses (before they are parsed/built) as 99%
> of
> >> > the
> >> > > > time
> >> > > > > it is simply a case of replacing characters with numeric
> character
> >> > > > > references or character entity references..
> >> > > > >
> >> > > > > We are unable to modify the legacy service to remove these
> >> erroneous
> >> > > > > responses.
> >> > > > >
> >> > > > > Heres the proxy config (I said it was simple!!) followed by the
> >> > > Exception
> >> > > > > thrown... The exception causes the service to hang and the
> fault
> >> > > > sequence
> >> > > > > is only entered after a 60 second timeout.
> >> > > > >
> >> > > > > <proxy xmlns="http://ws.apache.org/ns/synapse"
> >> name="legacyservice"
> >> > > > > transports="http" startOnLoad="true">
> >> > > > >
> >> > > > > <target endpoint="legacyXMLReceiver">
> >> > > > >
> >> > > > > <inSequence>
> >> > > > >
> >> > > > > <log level="full">
> >> > > > >
> >> > > > > <property name="MESSAGE" value="InSequence" />
> >> > > > >
> >> > > > > </log>
> >> > > > >
> >> > > > > </inSequence>
> >> > > > >
> >> > > > > <outSequence>
> >> > > > >
> >> > > > > <log level="full">
> >> > > > >
> >> > > > > <property name="MESSAGE" value="OutSequence" />
> >> > > > >
> >> > > > > </log>
> >> > > > >
> >> > > > > <send />
> >> > > > >
> >> > > > > </outSequence>
> >> > > > >
> >> > > > > <faultSequence>
> >> > > > >
> >> > > > > <makefault version="soap11">
> >> > > > >
> >> > > > > <code xmlns:soap11Env="
> >> > > > > http://schemas.xmlsoap.org/soap/envelope/"
> >> value="soap11Env:Server"
> >> > />
> >> > > > >
> >> > > > > <reason
> expression="get-property('ERROR_MESSAGE')" />
> >> > > > >
> >> > > > > <role />
> >> > > > >
> >> > > > > </makefault>
> >> > > > >
> >> > > > > <log level="full">
> >> > > > >
> >> > > > > <property name="MESSAGE" value="FaultSequence" />
> >> > > > >
> >> > > > > </log>
> >> > > > >
> >> > > > > <property name="HTTP_SC" value="500" scope="axis2" />
> >> > > > >
> >> > > > > <send />
> >> > > > >
> >> > > > > </faultSequence>
> >> > > > >
> >> > > > > </target>
> >> > > > >
> >> > > > > </proxy>
> >> > > > >
> >> > > > >
> >> > > > > <endpoint xmlns="http://ws.apache.org/ns/synapse"
> >> > > > > name="legacyXMLReceiver">
> >> > > > >
> >> > > > > <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet
> "
> >> > > > > format="pox" >
> >> > > > >
> >> > > > > </address>
> >> > > > >
> >> > > > > </endpoint>
> >> > > > >
> >> > > > >
> >> > > > > ERROR
> {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
> >> > > > > Uncaught exception
> >> > > > > {org.apache.axis2.transport.base.threads.NativeWorkerPool}
> >> > > > > *org.apache.axiom.om.OMException:
> com.ctc.wstx.exc.WstxIOException:
> >> > > > Invalid
> >> > > > > UTF-8 middle byte 0x3c (at char #714, byte #127)*
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
> >> > > > > at java.lang.String.valueOf(String.java:2826)
> >> > > > > at java.lang.StringBuffer.append(StringBuffer.java:219)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
> >> > > > > at
> org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> >> > > > > at java.lang.Thread.run(Thread.java:680)
> >> > > > > *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8
> middle
> >> > byte
> >> > > > > 0x3c (at char #714, byte #127)*
> >> > > > > at
> >> com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
> >> > > > > at
> >> > com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
> >> > > > > ... 31 more
> >> > > > > *Caused by: java.io.CharConversionException: Invalid UTF-8
> middle
> >> > byte
> >> > > > 0x3c
> >> > > > > (at char #714, byte #127)*
> >> > > > > at
> >> com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
> >> > > > > at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
> >> > > > > at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
> >> > > > > at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
> >> > > > > at
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
> >> > > > > at
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
> >> > > > > at
> >> > com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
> >> > > > >
> >> > > >
> >> > > >
> >> > > >
> >> > > > --
> >> > > > Hiranya Jayathilaka
> >> > > > Associate Technical Lead;
> >> > > > WSO2 Inc.; http://wso2.org
> >> > > > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> >> > > > Blog: http://techfeast-hiranya.blogspot.com
> >> > > >
> >> > >
> >> >
> >> >
> >> >
> >> > --
> >> > Hiranya Jayathilaka
> >> > Associate Technical Lead;
> >> > WSO2 Inc.; http://wso2.org
> >> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> >> > Blog: http://techfeast-hiranya.blogspot.com
> >> >
> >>
> >
> >
> >
> > --
> > Hiranya Jayathilaka
> > Associate Technical Lead;
> > WSO2 Inc.; http://wso2.org
> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> > Blog: http://techfeast-hiranya.blogspot.com
>
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Andreas Veithen <an...@gmail.com>.
Axiom/Woodstox is of course able to handle special characters,
provided that it gets the right information about the charset encoding
of the message. To me this looks like the Content-Type header doesn't
contain the correct charset encoding.
Andreas
On Tue, Feb 14, 2012 at 17:41, Hiranya Jayathilaka <hi...@gmail.com> wrote:
> Hi Matthew,
>
> We use Axiom as the underlying XML infoset. AFAIK it usually works well
> with special characters. Not sure why it cannot handle this pound sign. May
> be Andreas, can shed some light on the matter? Actually in this case the
> exception is thrown by the Woodstox parser which is at a layer lower than
> Axiom. So this could be a Woodstox issue.
>
> However if the underlying XML parser cannot handle this payload, then I
> don't think any of our built-in utils will be able to parse it without
> throwing an error. So your best option is to serialize this into a string
> buffer or a byte buffer and run the necessary replacement operations.
> Anyway lets wait and see what others have to say.
>
> Thanks,
> Hiranya
>
> On Tue, Feb 14, 2012 at 7:55 PM, Matthew Clark
> <ma...@googlemail.com>wrote:
>
>> Sure - the service I'm looking at right now is very simple - the input just
>> looks like this:
>>
>> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
>> <function>findOrderByReference</function>
>> <args>
>> <arg id="1">SomeRef123</arg>
>> </args>
>> </oxxml>
>>
>> The response then looks like this (i've removed a large chunk of it":
>>
>> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
>> <response function="findOrderByReference" uuid="4444-4444-4444-4444">
>> <matches count="1">
>> <order id="1234567">
>> <description>Some description including a £ (pound)
>> sign</description>
>> </order>
>> </matches>
>> </response>
>> </oxxml>
>>
>> The pound sign causes StAX to throw an exception.. so I'd like to replace
>> it as follows:
>>
>> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
>> <response function="findOrderByReference" txn-uuid="4444-4444-4444-4444">
>> <matches count="1">
>> <order id="1234567">
>> <description>Some description including a £
>> (ampersandhash163;)
>> sign</description>
>> </order>
>> </matches>
>> </response>
>> </oxxml>
>>
>>
>> On 14 February 2012 13:16, Hiranya Jayathilaka <hi...@gmail.com>
>> wrote:
>>
>> > On Tue, Feb 14, 2012 at 5:01 PM, Matthew Clark
>> > <ma...@googlemail.com>wrote:
>> >
>> > > Hi thanks for that - for some reason I had overlooked the message
>> > > builders..
>> > >
>> > > I have a rudimentary version of this working now but given the various
>> > > classes available (XMLStreamReader, StAXbuilder and so on), what would
>> be
>> > > the most efficient way to do the replacement?
>> > >
>> >
>> > If the input byte stream contains invalid characters then I don't think
>> you
>> > can use any of the above classes to process your inputs.
>> >
>> >
>> > >
>> > > I have about 40 characters (such as the pound sign) that I would like
>> to
>> > > replace with entity references... For the first version, I simply
>> > converted
>> > > to a string used StringUtils.replaceEach() but this is obviously not
>> > > ideal..
>> > >
>> >
>> > Can you please share an input message and a preprocessed message for us
>> to
>> > get a better understanding of your requirement?
>> >
>> > Thanks,
>> > Hiranya
>> >
>> >
>> > >
>> > >
>> > > On 14 February 2012 04:32, Hiranya Jayathilaka <hi...@gmail.com>
>> > > wrote:
>> > >
>> > > > Hi Mark,
>> > > >
>> > > > If you want to preprocess the responses then I'd recommend you to
>> > write a
>> > > > custom message builder. You can register the custom message builder
>> in
>> > > the
>> > > > axis2.xml file against the content type of your responses. There you
>> > will
>> > > > be able to include any custom logic along with code for handling
>> > invalid
>> > > > characters in the payload.
>> > > >
>> > > > Here are some useful resources I found on the web:
>> > > >
>> > > >
>> > > >
>> > >
>> >
>> http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
>> > > >
>> > > >
>> > >
>> >
>> http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
>> > > >
>> > > > Thanks,
>> > > > Hiranya
>> > > >
>> > > > On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
>> > > > <ma...@googlemail.com>wrote:
>> > > >
>> > > > > Hi all, I'd really appreciate some help with this one... it's
>> hurting
>> > > my
>> > > > > brain!
>> > > > >
>> > > > > We have a legacy service that I would like to include in some of
>> our
>> > > ESB
>> > > > > operations.
>> > > > > The legacy service uses XML for both request and response payloads
>> > > making
>> > > > > it a very easy integration.
>> > > > >
>> > > > > I've created a very simple proxy service (see below).
>> > > > >
>> > > > > The problem I am having is that the legacy service can return some
>> > > > invalid
>> > > > > characters and is causing the stax parser to blow up in such a way
>> > > that I
>> > > > > can't even handle it gracefully with a fault sequence. I'd really
>> > like
>> > > > to
>> > > > > pre-process the responses (before they are parsed/built) as 99% of
>> > the
>> > > > time
>> > > > > it is simply a case of replacing characters with numeric character
>> > > > > references or character entity references..
>> > > > >
>> > > > > We are unable to modify the legacy service to remove these
>> erroneous
>> > > > > responses.
>> > > > >
>> > > > > Heres the proxy config (I said it was simple!!) followed by the
>> > > Exception
>> > > > > thrown... The exception causes the service to hang and the fault
>> > > > sequence
>> > > > > is only entered after a 60 second timeout.
>> > > > >
>> > > > > <proxy xmlns="http://ws.apache.org/ns/synapse"
>> name="legacyservice"
>> > > > > transports="http" startOnLoad="true">
>> > > > >
>> > > > > <target endpoint="legacyXMLReceiver">
>> > > > >
>> > > > > <inSequence>
>> > > > >
>> > > > > <log level="full">
>> > > > >
>> > > > > <property name="MESSAGE" value="InSequence" />
>> > > > >
>> > > > > </log>
>> > > > >
>> > > > > </inSequence>
>> > > > >
>> > > > > <outSequence>
>> > > > >
>> > > > > <log level="full">
>> > > > >
>> > > > > <property name="MESSAGE" value="OutSequence" />
>> > > > >
>> > > > > </log>
>> > > > >
>> > > > > <send />
>> > > > >
>> > > > > </outSequence>
>> > > > >
>> > > > > <faultSequence>
>> > > > >
>> > > > > <makefault version="soap11">
>> > > > >
>> > > > > <code xmlns:soap11Env="
>> > > > > http://schemas.xmlsoap.org/soap/envelope/"
>> value="soap11Env:Server"
>> > />
>> > > > >
>> > > > > <reason expression="get-property('ERROR_MESSAGE')" />
>> > > > >
>> > > > > <role />
>> > > > >
>> > > > > </makefault>
>> > > > >
>> > > > > <log level="full">
>> > > > >
>> > > > > <property name="MESSAGE" value="FaultSequence" />
>> > > > >
>> > > > > </log>
>> > > > >
>> > > > > <property name="HTTP_SC" value="500" scope="axis2" />
>> > > > >
>> > > > > <send />
>> > > > >
>> > > > > </faultSequence>
>> > > > >
>> > > > > </target>
>> > > > >
>> > > > > </proxy>
>> > > > >
>> > > > >
>> > > > > <endpoint xmlns="http://ws.apache.org/ns/synapse"
>> > > > > name="legacyXMLReceiver">
>> > > > >
>> > > > > <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
>> > > > > format="pox" >
>> > > > >
>> > > > > </address>
>> > > > >
>> > > > > </endpoint>
>> > > > >
>> > > > >
>> > > > > ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
>> > > > > Uncaught exception
>> > > > > {org.apache.axis2.transport.base.threads.NativeWorkerPool}
>> > > > > *org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException:
>> > > > Invalid
>> > > > > UTF-8 middle byte 0x3c (at char #714, byte #127)*
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
>> > > > > at java.lang.String.valueOf(String.java:2826)
>> > > > > at java.lang.StringBuffer.append(StringBuffer.java:219)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
>> > > > > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>> > > > > at java.lang.Thread.run(Thread.java:680)
>> > > > > *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle
>> > byte
>> > > > > 0x3c (at char #714, byte #127)*
>> > > > > at
>> com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
>> > > > > at
>> > com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
>> > > > > ... 31 more
>> > > > > *Caused by: java.io.CharConversionException: Invalid UTF-8 middle
>> > byte
>> > > > 0x3c
>> > > > > (at char #714, byte #127)*
>> > > > > at
>> com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
>> > > > > at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
>> > > > > at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
>> > > > > at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
>> > > > > at
>> > > > >
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
>> > > > > at
>> > > > >
>> > > >
>> > >
>> >
>> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
>> > > > > at
>> > com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
>> > > > >
>> > > >
>> > > >
>> > > >
>> > > > --
>> > > > Hiranya Jayathilaka
>> > > > Associate Technical Lead;
>> > > > WSO2 Inc.; http://wso2.org
>> > > > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
>> > > > Blog: http://techfeast-hiranya.blogspot.com
>> > > >
>> > >
>> >
>> >
>> >
>> > --
>> > Hiranya Jayathilaka
>> > Associate Technical Lead;
>> > WSO2 Inc.; http://wso2.org
>> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
>> > Blog: http://techfeast-hiranya.blogspot.com
>> >
>>
>
>
>
> --
> Hiranya Jayathilaka
> Associate Technical Lead;
> WSO2 Inc.; http://wso2.org
> E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> Blog: http://techfeast-hiranya.blogspot.com
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Hiranya Jayathilaka <hi...@gmail.com>.
Hi Matthew,
We use Axiom as the underlying XML infoset. AFAIK it usually works well
with special characters. Not sure why it cannot handle this pound sign. May
be Andreas, can shed some light on the matter? Actually in this case the
exception is thrown by the Woodstox parser which is at a layer lower than
Axiom. So this could be a Woodstox issue.
However if the underlying XML parser cannot handle this payload, then I
don't think any of our built-in utils will be able to parse it without
throwing an error. So your best option is to serialize this into a string
buffer or a byte buffer and run the necessary replacement operations.
Anyway lets wait and see what others have to say.
Thanks,
Hiranya
On Tue, Feb 14, 2012 at 7:55 PM, Matthew Clark
<ma...@googlemail.com>wrote:
> Sure - the service I'm looking at right now is very simple - the input just
> looks like this:
>
> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
> <function>findOrderByReference</function>
> <args>
> <arg id="1">SomeRef123</arg>
> </args>
> </oxxml>
>
> The response then looks like this (i've removed a large chunk of it":
>
> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
> <response function="findOrderByReference" uuid="4444-4444-4444-4444">
> <matches count="1">
> <order id="1234567">
> <description>Some description including a £ (pound)
> sign</description>
> </order>
> </matches>
> </response>
> </oxxml>
>
> The pound sign causes StAX to throw an exception.. so I'd like to replace
> it as follows:
>
> <oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
> <response function="findOrderByReference" txn-uuid="4444-4444-4444-4444">
> <matches count="1">
> <order id="1234567">
> <description>Some description including a £
> (ampersandhash163;)
> sign</description>
> </order>
> </matches>
> </response>
> </oxxml>
>
>
> On 14 February 2012 13:16, Hiranya Jayathilaka <hi...@gmail.com>
> wrote:
>
> > On Tue, Feb 14, 2012 at 5:01 PM, Matthew Clark
> > <ma...@googlemail.com>wrote:
> >
> > > Hi thanks for that - for some reason I had overlooked the message
> > > builders..
> > >
> > > I have a rudimentary version of this working now but given the various
> > > classes available (XMLStreamReader, StAXbuilder and so on), what would
> be
> > > the most efficient way to do the replacement?
> > >
> >
> > If the input byte stream contains invalid characters then I don't think
> you
> > can use any of the above classes to process your inputs.
> >
> >
> > >
> > > I have about 40 characters (such as the pound sign) that I would like
> to
> > > replace with entity references... For the first version, I simply
> > converted
> > > to a string used StringUtils.replaceEach() but this is obviously not
> > > ideal..
> > >
> >
> > Can you please share an input message and a preprocessed message for us
> to
> > get a better understanding of your requirement?
> >
> > Thanks,
> > Hiranya
> >
> >
> > >
> > >
> > > On 14 February 2012 04:32, Hiranya Jayathilaka <hi...@gmail.com>
> > > wrote:
> > >
> > > > Hi Mark,
> > > >
> > > > If you want to preprocess the responses then I'd recommend you to
> > write a
> > > > custom message builder. You can register the custom message builder
> in
> > > the
> > > > axis2.xml file against the content type of your responses. There you
> > will
> > > > be able to include any custom logic along with code for handling
> > invalid
> > > > characters in the payload.
> > > >
> > > > Here are some useful resources I found on the web:
> > > >
> > > >
> > > >
> > >
> >
> http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
> > > >
> > > >
> > >
> >
> http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
> > > >
> > > > Thanks,
> > > > Hiranya
> > > >
> > > > On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
> > > > <ma...@googlemail.com>wrote:
> > > >
> > > > > Hi all, I'd really appreciate some help with this one... it's
> hurting
> > > my
> > > > > brain!
> > > > >
> > > > > We have a legacy service that I would like to include in some of
> our
> > > ESB
> > > > > operations.
> > > > > The legacy service uses XML for both request and response payloads
> > > making
> > > > > it a very easy integration.
> > > > >
> > > > > I've created a very simple proxy service (see below).
> > > > >
> > > > > The problem I am having is that the legacy service can return some
> > > > invalid
> > > > > characters and is causing the stax parser to blow up in such a way
> > > that I
> > > > > can't even handle it gracefully with a fault sequence. I'd really
> > like
> > > > to
> > > > > pre-process the responses (before they are parsed/built) as 99% of
> > the
> > > > time
> > > > > it is simply a case of replacing characters with numeric character
> > > > > references or character entity references..
> > > > >
> > > > > We are unable to modify the legacy service to remove these
> erroneous
> > > > > responses.
> > > > >
> > > > > Heres the proxy config (I said it was simple!!) followed by the
> > > Exception
> > > > > thrown... The exception causes the service to hang and the fault
> > > > sequence
> > > > > is only entered after a 60 second timeout.
> > > > >
> > > > > <proxy xmlns="http://ws.apache.org/ns/synapse"
> name="legacyservice"
> > > > > transports="http" startOnLoad="true">
> > > > >
> > > > > <target endpoint="legacyXMLReceiver">
> > > > >
> > > > > <inSequence>
> > > > >
> > > > > <log level="full">
> > > > >
> > > > > <property name="MESSAGE" value="InSequence" />
> > > > >
> > > > > </log>
> > > > >
> > > > > </inSequence>
> > > > >
> > > > > <outSequence>
> > > > >
> > > > > <log level="full">
> > > > >
> > > > > <property name="MESSAGE" value="OutSequence" />
> > > > >
> > > > > </log>
> > > > >
> > > > > <send />
> > > > >
> > > > > </outSequence>
> > > > >
> > > > > <faultSequence>
> > > > >
> > > > > <makefault version="soap11">
> > > > >
> > > > > <code xmlns:soap11Env="
> > > > > http://schemas.xmlsoap.org/soap/envelope/"
> value="soap11Env:Server"
> > />
> > > > >
> > > > > <reason expression="get-property('ERROR_MESSAGE')" />
> > > > >
> > > > > <role />
> > > > >
> > > > > </makefault>
> > > > >
> > > > > <log level="full">
> > > > >
> > > > > <property name="MESSAGE" value="FaultSequence" />
> > > > >
> > > > > </log>
> > > > >
> > > > > <property name="HTTP_SC" value="500" scope="axis2" />
> > > > >
> > > > > <send />
> > > > >
> > > > > </faultSequence>
> > > > >
> > > > > </target>
> > > > >
> > > > > </proxy>
> > > > >
> > > > >
> > > > > <endpoint xmlns="http://ws.apache.org/ns/synapse"
> > > > > name="legacyXMLReceiver">
> > > > >
> > > > > <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
> > > > > format="pox" >
> > > > >
> > > > > </address>
> > > > >
> > > > > </endpoint>
> > > > >
> > > > >
> > > > > ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
> > > > > Uncaught exception
> > > > > {org.apache.axis2.transport.base.threads.NativeWorkerPool}
> > > > > *org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException:
> > > > Invalid
> > > > > UTF-8 middle byte 0x3c (at char #714, byte #127)*
> > > > > at
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
> > > > > at java.lang.String.valueOf(String.java:2826)
> > > > > at java.lang.StringBuffer.append(StringBuffer.java:219)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
> > > > > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
> > > > > at
> > > > >
> > > >
> > >
> >
> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > > > at java.lang.Thread.run(Thread.java:680)
> > > > > *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle
> > byte
> > > > > 0x3c (at char #714, byte #127)*
> > > > > at
> com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
> > > > > at
> > com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
> > > > > at
> > > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
> > > > > ... 31 more
> > > > > *Caused by: java.io.CharConversionException: Invalid UTF-8 middle
> > byte
> > > > 0x3c
> > > > > (at char #714, byte #127)*
> > > > > at
> com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
> > > > > at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
> > > > > at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
> > > > > at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
> > > > > at
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
> > > > > at
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
> > > > > at
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
> > > > > at
> > > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
> > > > > at
> > com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Hiranya Jayathilaka
> > > > Associate Technical Lead;
> > > > WSO2 Inc.; http://wso2.org
> > > > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> > > > Blog: http://techfeast-hiranya.blogspot.com
> > > >
> > >
> >
> >
> >
> > --
> > Hiranya Jayathilaka
> > Associate Technical Lead;
> > WSO2 Inc.; http://wso2.org
> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> > Blog: http://techfeast-hiranya.blogspot.com
> >
>
--
Hiranya Jayathilaka
Associate Technical Lead;
WSO2 Inc.; http://wso2.org
E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
Blog: http://techfeast-hiranya.blogspot.com
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Matthew Clark <ma...@googlemail.com>.
Sure - the service I'm looking at right now is very simple - the input just
looks like this:
<oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
<function>findOrderByReference</function>
<args>
<arg id="1">SomeRef123</arg>
</args>
</oxxml>
The response then looks like this (i've removed a large chunk of it":
<oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
<response function="findOrderByReference" uuid="4444-4444-4444-4444">
<matches count="1">
<order id="1234567">
<description>Some description including a £ (pound)
sign</description>
</order>
</matches>
</response>
</oxxml>
The pound sign causes StAX to throw an exception.. so I'd like to replace
it as follows:
<oxxml version="1.0" xmlns="http://xyz.com/xmlapi/">
<response function="findOrderByReference" txn-uuid="4444-4444-4444-4444">
<matches count="1">
<order id="1234567">
<description>Some description including a £
(ampersandhash163;)
sign</description>
</order>
</matches>
</response>
</oxxml>
On 14 February 2012 13:16, Hiranya Jayathilaka <hi...@gmail.com> wrote:
> On Tue, Feb 14, 2012 at 5:01 PM, Matthew Clark
> <ma...@googlemail.com>wrote:
>
> > Hi thanks for that - for some reason I had overlooked the message
> > builders..
> >
> > I have a rudimentary version of this working now but given the various
> > classes available (XMLStreamReader, StAXbuilder and so on), what would be
> > the most efficient way to do the replacement?
> >
>
> If the input byte stream contains invalid characters then I don't think you
> can use any of the above classes to process your inputs.
>
>
> >
> > I have about 40 characters (such as the pound sign) that I would like to
> > replace with entity references... For the first version, I simply
> converted
> > to a string used StringUtils.replaceEach() but this is obviously not
> > ideal..
> >
>
> Can you please share an input message and a preprocessed message for us to
> get a better understanding of your requirement?
>
> Thanks,
> Hiranya
>
>
> >
> >
> > On 14 February 2012 04:32, Hiranya Jayathilaka <hi...@gmail.com>
> > wrote:
> >
> > > Hi Mark,
> > >
> > > If you want to preprocess the responses then I'd recommend you to
> write a
> > > custom message builder. You can register the custom message builder in
> > the
> > > axis2.xml file against the content type of your responses. There you
> will
> > > be able to include any custom logic along with code for handling
> invalid
> > > characters in the payload.
> > >
> > > Here are some useful resources I found on the web:
> > >
> > >
> > >
> >
> http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
> > >
> > >
> >
> http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
> > >
> > > Thanks,
> > > Hiranya
> > >
> > > On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
> > > <ma...@googlemail.com>wrote:
> > >
> > > > Hi all, I'd really appreciate some help with this one... it's hurting
> > my
> > > > brain!
> > > >
> > > > We have a legacy service that I would like to include in some of our
> > ESB
> > > > operations.
> > > > The legacy service uses XML for both request and response payloads
> > making
> > > > it a very easy integration.
> > > >
> > > > I've created a very simple proxy service (see below).
> > > >
> > > > The problem I am having is that the legacy service can return some
> > > invalid
> > > > characters and is causing the stax parser to blow up in such a way
> > that I
> > > > can't even handle it gracefully with a fault sequence. I'd really
> like
> > > to
> > > > pre-process the responses (before they are parsed/built) as 99% of
> the
> > > time
> > > > it is simply a case of replacing characters with numeric character
> > > > references or character entity references..
> > > >
> > > > We are unable to modify the legacy service to remove these erroneous
> > > > responses.
> > > >
> > > > Heres the proxy config (I said it was simple!!) followed by the
> > Exception
> > > > thrown... The exception causes the service to hang and the fault
> > > sequence
> > > > is only entered after a 60 second timeout.
> > > >
> > > > <proxy xmlns="http://ws.apache.org/ns/synapse" name="legacyservice"
> > > > transports="http" startOnLoad="true">
> > > >
> > > > <target endpoint="legacyXMLReceiver">
> > > >
> > > > <inSequence>
> > > >
> > > > <log level="full">
> > > >
> > > > <property name="MESSAGE" value="InSequence" />
> > > >
> > > > </log>
> > > >
> > > > </inSequence>
> > > >
> > > > <outSequence>
> > > >
> > > > <log level="full">
> > > >
> > > > <property name="MESSAGE" value="OutSequence" />
> > > >
> > > > </log>
> > > >
> > > > <send />
> > > >
> > > > </outSequence>
> > > >
> > > > <faultSequence>
> > > >
> > > > <makefault version="soap11">
> > > >
> > > > <code xmlns:soap11Env="
> > > > http://schemas.xmlsoap.org/soap/envelope/" value="soap11Env:Server"
> />
> > > >
> > > > <reason expression="get-property('ERROR_MESSAGE')" />
> > > >
> > > > <role />
> > > >
> > > > </makefault>
> > > >
> > > > <log level="full">
> > > >
> > > > <property name="MESSAGE" value="FaultSequence" />
> > > >
> > > > </log>
> > > >
> > > > <property name="HTTP_SC" value="500" scope="axis2" />
> > > >
> > > > <send />
> > > >
> > > > </faultSequence>
> > > >
> > > > </target>
> > > >
> > > > </proxy>
> > > >
> > > >
> > > > <endpoint xmlns="http://ws.apache.org/ns/synapse"
> > > > name="legacyXMLReceiver">
> > > >
> > > > <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
> > > > format="pox" >
> > > >
> > > > </address>
> > > >
> > > > </endpoint>
> > > >
> > > >
> > > > ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
> > > > Uncaught exception
> > > > {org.apache.axis2.transport.base.threads.NativeWorkerPool}
> > > > *org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException:
> > > Invalid
> > > > UTF-8 middle byte 0x3c (at char #714, byte #127)*
> > > > at
> > > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
> > > > at java.lang.String.valueOf(String.java:2826)
> > > > at java.lang.StringBuffer.append(StringBuffer.java:219)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
> > > > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
> > > > at
> > > >
> > >
> >
> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
> > > > at
> > > >
> > > >
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > > at
> > > >
> > > >
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > > at java.lang.Thread.run(Thread.java:680)
> > > > *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle
> byte
> > > > 0x3c (at char #714, byte #127)*
> > > > at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
> > > > at
> com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > > > at
> > > >
> > > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
> > > > at
> > > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
> > > > ... 31 more
> > > > *Caused by: java.io.CharConversionException: Invalid UTF-8 middle
> byte
> > > 0x3c
> > > > (at char #714, byte #127)*
> > > > at com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
> > > > at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
> > > > at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
> > > > at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
> > > > at
> > > >
> > > >
> > >
> >
> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
> > > > at
> > > >
> > >
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
> > > > at
> > > >
> > >
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
> > > > at
> > > >
> > >
> >
> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
> > > > at
> > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
> > > > at
> > > >
> > > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
> > > > at
> > > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
> > > > at
> com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
> > > >
> > >
> > >
> > >
> > > --
> > > Hiranya Jayathilaka
> > > Associate Technical Lead;
> > > WSO2 Inc.; http://wso2.org
> > > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> > > Blog: http://techfeast-hiranya.blogspot.com
> > >
> >
>
>
>
> --
> Hiranya Jayathilaka
> Associate Technical Lead;
> WSO2 Inc.; http://wso2.org
> E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> Blog: http://techfeast-hiranya.blogspot.com
>
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Hiranya Jayathilaka <hi...@gmail.com>.
On Tue, Feb 14, 2012 at 5:01 PM, Matthew Clark
<ma...@googlemail.com>wrote:
> Hi thanks for that - for some reason I had overlooked the message
> builders..
>
> I have a rudimentary version of this working now but given the various
> classes available (XMLStreamReader, StAXbuilder and so on), what would be
> the most efficient way to do the replacement?
>
If the input byte stream contains invalid characters then I don't think you
can use any of the above classes to process your inputs.
>
> I have about 40 characters (such as the pound sign) that I would like to
> replace with entity references... For the first version, I simply converted
> to a string used StringUtils.replaceEach() but this is obviously not
> ideal..
>
Can you please share an input message and a preprocessed message for us to
get a better understanding of your requirement?
Thanks,
Hiranya
>
>
> On 14 February 2012 04:32, Hiranya Jayathilaka <hi...@gmail.com>
> wrote:
>
> > Hi Mark,
> >
> > If you want to preprocess the responses then I'd recommend you to write a
> > custom message builder. You can register the custom message builder in
> the
> > axis2.xml file against the content type of your responses. There you will
> > be able to include any custom logic along with code for handling invalid
> > characters in the payload.
> >
> > Here are some useful resources I found on the web:
> >
> >
> >
> http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
> >
> >
> http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
> >
> > Thanks,
> > Hiranya
> >
> > On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
> > <ma...@googlemail.com>wrote:
> >
> > > Hi all, I'd really appreciate some help with this one... it's hurting
> my
> > > brain!
> > >
> > > We have a legacy service that I would like to include in some of our
> ESB
> > > operations.
> > > The legacy service uses XML for both request and response payloads
> making
> > > it a very easy integration.
> > >
> > > I've created a very simple proxy service (see below).
> > >
> > > The problem I am having is that the legacy service can return some
> > invalid
> > > characters and is causing the stax parser to blow up in such a way
> that I
> > > can't even handle it gracefully with a fault sequence. I'd really like
> > to
> > > pre-process the responses (before they are parsed/built) as 99% of the
> > time
> > > it is simply a case of replacing characters with numeric character
> > > references or character entity references..
> > >
> > > We are unable to modify the legacy service to remove these erroneous
> > > responses.
> > >
> > > Heres the proxy config (I said it was simple!!) followed by the
> Exception
> > > thrown... The exception causes the service to hang and the fault
> > sequence
> > > is only entered after a 60 second timeout.
> > >
> > > <proxy xmlns="http://ws.apache.org/ns/synapse" name="legacyservice"
> > > transports="http" startOnLoad="true">
> > >
> > > <target endpoint="legacyXMLReceiver">
> > >
> > > <inSequence>
> > >
> > > <log level="full">
> > >
> > > <property name="MESSAGE" value="InSequence" />
> > >
> > > </log>
> > >
> > > </inSequence>
> > >
> > > <outSequence>
> > >
> > > <log level="full">
> > >
> > > <property name="MESSAGE" value="OutSequence" />
> > >
> > > </log>
> > >
> > > <send />
> > >
> > > </outSequence>
> > >
> > > <faultSequence>
> > >
> > > <makefault version="soap11">
> > >
> > > <code xmlns:soap11Env="
> > > http://schemas.xmlsoap.org/soap/envelope/" value="soap11Env:Server" />
> > >
> > > <reason expression="get-property('ERROR_MESSAGE')" />
> > >
> > > <role />
> > >
> > > </makefault>
> > >
> > > <log level="full">
> > >
> > > <property name="MESSAGE" value="FaultSequence" />
> > >
> > > </log>
> > >
> > > <property name="HTTP_SC" value="500" scope="axis2" />
> > >
> > > <send />
> > >
> > > </faultSequence>
> > >
> > > </target>
> > >
> > > </proxy>
> > >
> > >
> > > <endpoint xmlns="http://ws.apache.org/ns/synapse"
> > > name="legacyXMLReceiver">
> > >
> > > <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
> > > format="pox" >
> > >
> > > </address>
> > >
> > > </endpoint>
> > >
> > >
> > > ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
> > > Uncaught exception
> > > {org.apache.axis2.transport.base.threads.NativeWorkerPool}
> > > *org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException:
> > Invalid
> > > UTF-8 middle byte 0x3c (at char #714, byte #127)*
> > > at
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > > at
> > >
> > >
> >
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
> > > at java.lang.String.valueOf(String.java:2826)
> > > at java.lang.StringBuffer.append(StringBuffer.java:219)
> > > at
> > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
> > > at
> > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
> > > at
> > >
> > >
> >
> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
> > > at
> > >
> > >
> >
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
> > > at
> > >
> > >
> >
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> > > at
> > >
> > >
> >
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
> > > at
> > >
> > >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
> > > at
> > >
> > >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
> > > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
> > > at
> > >
> >
> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
> > > at
> > >
> > >
> >
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
> > > at
> > >
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > at
> > >
> > >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > at java.lang.Thread.run(Thread.java:680)
> > > *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle byte
> > > 0x3c (at char #714, byte #127)*
> > > at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
> > > at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
> > > at
> > >
> > >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > > at
> > >
> > >
> >
> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
> > > at
> > >
> > >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > > at
> > >
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
> > > at
> > >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
> > > ... 31 more
> > > *Caused by: java.io.CharConversionException: Invalid UTF-8 middle byte
> > 0x3c
> > > (at char #714, byte #127)*
> > > at com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
> > > at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
> > > at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
> > > at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
> > > at
> > >
> > >
> >
> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
> > > at
> > >
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
> > > at
> > >
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
> > > at
> > >
> >
> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
> > > at
> > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
> > > at
> > >
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
> > > at
> > >
> >
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
> > > at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
> > >
> >
> >
> >
> > --
> > Hiranya Jayathilaka
> > Associate Technical Lead;
> > WSO2 Inc.; http://wso2.org
> > E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> > Blog: http://techfeast-hiranya.blogspot.com
> >
>
--
Hiranya Jayathilaka
Associate Technical Lead;
WSO2 Inc.; http://wso2.org
E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
Blog: http://techfeast-hiranya.blogspot.com
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Matthew Clark <ma...@googlemail.com>.
Hi thanks for that - for some reason I had overlooked the message builders..
I have a rudimentary version of this working now but given the various
classes available (XMLStreamReader, StAXbuilder and so on), what would be
the most efficient way to do the replacement?
I have about 40 characters (such as the pound sign) that I would like to
replace with entity references... For the first version, I simply converted
to a string used StringUtils.replaceEach() but this is obviously not
ideal..
On 14 February 2012 04:32, Hiranya Jayathilaka <hi...@gmail.com> wrote:
> Hi Mark,
>
> If you want to preprocess the responses then I'd recommend you to write a
> custom message builder. You can register the custom message builder in the
> axis2.xml file against the content type of your responses. There you will
> be able to include any custom logic along with code for handling invalid
> characters in the payload.
>
> Here are some useful resources I found on the web:
>
>
> http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
>
> http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
>
> Thanks,
> Hiranya
>
> On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
> <ma...@googlemail.com>wrote:
>
> > Hi all, I'd really appreciate some help with this one... it's hurting my
> > brain!
> >
> > We have a legacy service that I would like to include in some of our ESB
> > operations.
> > The legacy service uses XML for both request and response payloads making
> > it a very easy integration.
> >
> > I've created a very simple proxy service (see below).
> >
> > The problem I am having is that the legacy service can return some
> invalid
> > characters and is causing the stax parser to blow up in such a way that I
> > can't even handle it gracefully with a fault sequence. I'd really like
> to
> > pre-process the responses (before they are parsed/built) as 99% of the
> time
> > it is simply a case of replacing characters with numeric character
> > references or character entity references..
> >
> > We are unable to modify the legacy service to remove these erroneous
> > responses.
> >
> > Heres the proxy config (I said it was simple!!) followed by the Exception
> > thrown... The exception causes the service to hang and the fault
> sequence
> > is only entered after a 60 second timeout.
> >
> > <proxy xmlns="http://ws.apache.org/ns/synapse" name="legacyservice"
> > transports="http" startOnLoad="true">
> >
> > <target endpoint="legacyXMLReceiver">
> >
> > <inSequence>
> >
> > <log level="full">
> >
> > <property name="MESSAGE" value="InSequence" />
> >
> > </log>
> >
> > </inSequence>
> >
> > <outSequence>
> >
> > <log level="full">
> >
> > <property name="MESSAGE" value="OutSequence" />
> >
> > </log>
> >
> > <send />
> >
> > </outSequence>
> >
> > <faultSequence>
> >
> > <makefault version="soap11">
> >
> > <code xmlns:soap11Env="
> > http://schemas.xmlsoap.org/soap/envelope/" value="soap11Env:Server" />
> >
> > <reason expression="get-property('ERROR_MESSAGE')" />
> >
> > <role />
> >
> > </makefault>
> >
> > <log level="full">
> >
> > <property name="MESSAGE" value="FaultSequence" />
> >
> > </log>
> >
> > <property name="HTTP_SC" value="500" scope="axis2" />
> >
> > <send />
> >
> > </faultSequence>
> >
> > </target>
> >
> > </proxy>
> >
> >
> > <endpoint xmlns="http://ws.apache.org/ns/synapse"
> > name="legacyXMLReceiver">
> >
> > <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
> > format="pox" >
> >
> > </address>
> >
> > </endpoint>
> >
> >
> > ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
> > Uncaught exception
> > {org.apache.axis2.transport.base.threads.NativeWorkerPool}
> > *org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException:
> Invalid
> > UTF-8 middle byte 0x3c (at char #714, byte #127)*
> > at
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
> > at
> >
> >
> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> > at
> >
> >
> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
> > at
> >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > at
> >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > at
> >
> >
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> > at
> >
> >
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
> > at
> >
> >
> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
> > at java.lang.String.valueOf(String.java:2826)
> > at java.lang.StringBuffer.append(StringBuffer.java:219)
> > at
> >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
> > at
> >
> >
> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
> > at
> >
> >
> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
> > at
> >
> >
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
> > at
> >
> >
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> > at
> >
> >
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
> > at
> >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
> > at
> >
> >
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
> > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
> > at
> >
> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
> > at
> >
> >
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
> > at
> >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > at
> >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > at java.lang.Thread.run(Thread.java:680)
> > *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle byte
> > 0x3c (at char #714, byte #127)*
> > at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
> > at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
> > at
> >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > at
> >
> >
> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
> > at
> >
> >
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> > at
> >
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
> > at
> >
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
> > ... 31 more
> > *Caused by: java.io.CharConversionException: Invalid UTF-8 middle byte
> 0x3c
> > (at char #714, byte #127)*
> > at com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
> > at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
> > at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
> > at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
> > at
> >
> >
> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
> > at
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
> > at
> >
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
> > at
> >
> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
> > at
> >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
> > at
> >
> >
> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
> > at
> >
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
> > at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
> >
>
>
>
> --
> Hiranya Jayathilaka
> Associate Technical Lead;
> WSO2 Inc.; http://wso2.org
> E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
> Blog: http://techfeast-hiranya.blogspot.com
>
Re: Uncaught exception during response from legacy service - synapse 2.1
Posted by Hiranya Jayathilaka <hi...@gmail.com>.
Hi Mark,
If you want to preprocess the responses then I'd recommend you to write a
custom message builder. You can register the custom message builder in the
axis2.xml file against the content type of your responses. There you will
be able to include any custom logic along with code for handling invalid
characters in the payload.
Here are some useful resources I found on the web:
http://charithwiki.blogspot.com/2010/11/how-to-write-axis2-message-builder.html
http://wso2.org/library/articles/axis2-configuration-part2-learning-axis2-xml
Thanks,
Hiranya
On Tue, Feb 14, 2012 at 4:34 AM, Matthew Clark
<ma...@googlemail.com>wrote:
> Hi all, I'd really appreciate some help with this one... it's hurting my
> brain!
>
> We have a legacy service that I would like to include in some of our ESB
> operations.
> The legacy service uses XML for both request and response payloads making
> it a very easy integration.
>
> I've created a very simple proxy service (see below).
>
> The problem I am having is that the legacy service can return some invalid
> characters and is causing the stax parser to blow up in such a way that I
> can't even handle it gracefully with a fault sequence. I'd really like to
> pre-process the responses (before they are parsed/built) as 99% of the time
> it is simply a case of replacing characters with numeric character
> references or character entity references..
>
> We are unable to modify the legacy service to remove these erroneous
> responses.
>
> Heres the proxy config (I said it was simple!!) followed by the Exception
> thrown... The exception causes the service to hang and the fault sequence
> is only entered after a 60 second timeout.
>
> <proxy xmlns="http://ws.apache.org/ns/synapse" name="legacyservice"
> transports="http" startOnLoad="true">
>
> <target endpoint="legacyXMLReceiver">
>
> <inSequence>
>
> <log level="full">
>
> <property name="MESSAGE" value="InSequence" />
>
> </log>
>
> </inSequence>
>
> <outSequence>
>
> <log level="full">
>
> <property name="MESSAGE" value="OutSequence" />
>
> </log>
>
> <send />
>
> </outSequence>
>
> <faultSequence>
>
> <makefault version="soap11">
>
> <code xmlns:soap11Env="
> http://schemas.xmlsoap.org/soap/envelope/" value="soap11Env:Server" />
>
> <reason expression="get-property('ERROR_MESSAGE')" />
>
> <role />
>
> </makefault>
>
> <log level="full">
>
> <property name="MESSAGE" value="FaultSequence" />
>
> </log>
>
> <property name="HTTP_SC" value="500" scope="axis2" />
>
> <send />
>
> </faultSequence>
>
> </target>
>
> </proxy>
>
>
> <endpoint xmlns="http://ws.apache.org/ns/synapse"
> name="legacyXMLReceiver">
>
> <address uri="http://a.b.c.d:8080/legacyService/LegacyServlet"
> format="pox" >
>
> </address>
>
> </endpoint>
>
>
> ERROR {org.apache.axis2.transport.base.threads.NativeWorkerPool} -
> Uncaught exception
> {org.apache.axis2.transport.base.threads.NativeWorkerPool}
> *org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxIOException: Invalid
> UTF-8 middle byte 0x3c (at char #714, byte #127)*
> at
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
> at
>
> org.apache.axiom.om.impl.llom.OMElementImpl.buildNext(OMElementImpl.java:653)
> at
>
> org.apache.axiom.om.impl.llom.OMNodeImpl.getNextOMSibling(OMNodeImpl.java:122)
> at
>
> org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:343)
> at
>
> org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36)
> at
>
> org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:58)
> at
>
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:555)
> at
>
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> at
>
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> at
>
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> at
>
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeChildren(OMSerializerUtil.java:556)
> at
>
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:875)
> at
>
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:230)
> at
>
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:125)
> at
>
> org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:113)
> at
>
> org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:988)
> at java.lang.String.valueOf(String.java:2826)
> at java.lang.StringBuffer.append(StringBuffer.java:219)
> at
>
> org.apache.synapse.mediators.builtin.LogMediator.getFullLogMessage(LogMediator.java:184)
> at
>
> org.apache.synapse.mediators.builtin.LogMediator.getLogMessage(LogMediator.java:123)
> at
>
> org.apache.synapse.mediators.builtin.LogMediator.mediate(LogMediator.java:91)
> at
>
> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:60)
> at
>
> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
> at
>
> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:229)
> at
>
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:370)
> at
>
> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:160)
> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
> at
> org.apache.synapse.transport.nhttp.ClientWorker.run(ClientWorker.java:275)
> at
>
> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:173)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:680)
> *Caused by: com.ctc.wstx.exc.WstxIOException: Invalid UTF-8 middle byte
> 0x3c (at char #714, byte #127)*
> at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:708)
> at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1086)
> at
>
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> at
>
> org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
> at
>
> org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
> at
>
> org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
> at
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
> ... 31 more
> *Caused by: java.io.CharConversionException: Invalid UTF-8 middle byte 0x3c
> (at char #714, byte #127)*
> at com.ctc.wstx.io.UTF8Reader.reportInvalidOther(UTF8Reader.java:313)
> at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:204)
> at com.ctc.wstx.io.MergedReader.read(MergedReader.java:101)
> at com.ctc.wstx.io.ReaderSource.readInto(ReaderSource.java:84)
> at
>
> com.ctc.wstx.io.BranchingReaderSource.readInto(BranchingReaderSource.java:57)
> at
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1046)
> at
> com.ctc.wstx.sr.StreamScanner.loadMoreFromCurrent(StreamScanner.java:1053)
> at
> com.ctc.wstx.sr.StreamScanner.getNextInCurrAfterWS(StreamScanner.java:892)
> at
>
> com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2963)
> at
>
> com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
> at
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
> at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
>
--
Hiranya Jayathilaka
Associate Technical Lead;
WSO2 Inc.; http://wso2.org
E-mail: hiranya@wso2.com; Mobile: +94 77 633 3491
Blog: http://techfeast-hiranya.blogspot.com