On Tue, Oct 6, 2015 at 5:06 AM, Chanaka Fernando <[email protected]> wrote:
> Hi Ajith, > > The scenario which you have tested is not correct. If you put <send/> > mediator in the outSequence, since you are cloning the request and send to > 2 back ends, ESB will get 2 responses and tries to send back 2 responses to > client and that is causing this exception. What happens is that ESB will > send back the first response and then release the connection. When it tries > to send back the 2nd response, If some other thread has already reused that > connection, the "request" will be null and that is causing the NPE. > > If you are putting a <send/> mediator in the outSequence, make sure you > aggregate the responses before sending the response back. > Yes. I understood the logic. But my concerns was returning NPE. -Ajith > > On Mon, Oct 5, 2015 at 9:23 PM, Ajith Vitharana <[email protected]> wrote: > >> >> >> On Mon, Oct 5, 2015 at 5:59 AM, Chanaka Fernando <[email protected]> >> wrote: >> >>> Hi Ajith, >>> >>> We have already identified this issue and currently working on a fix. >>> Thanks for reporting this issue. >>> >> >> Thanks for looking to this. >> >> -Ajith >> >>> >>> On Mon, Oct 5, 2015 at 12:56 AM, Ajith Vitharana <[email protected]> >>> wrote: >>> >>>> Hi All >>>> >>>> I did a slight change to sample [1] (used <send/> instead of <drop/> at >>>> the outSequence) , now I'm getting following exception. >>>> >>>> [1] >>>> https://docs.wso2.com/display/IntegrationPatterns/Durable+Subscriber >>>> >>>> >>>> >>>> [2015-10-04 15:19:30,891] DEBUG - wire << "[\r][\n]" >>>> [2015-10-04 15:19:30,892] ERROR - PassThroughHttpSender Failed to >>>> submit the response >>>> j*ava.lang.NullPointerException* >>>> * at >>>> org.apache.synapse.transport.passthru.util.SourceResponseFactory.create(SourceResponseFactory.java:64)* >>>> * at >>>> org.apache.synapse.transport.passthru.PassThroughHttpSender.submitResponse(PassThroughHttpSender.java:462)* >>>> * at >>>> org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:267)* >>>> * at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)* >>>> at >>>> org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:212) >>>> at >>>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:444) >>>> at >>>> org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:102) >>>> at >>>> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:81) >>>> at >>>> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:48) >>>> at >>>> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:149) >>>> at >>>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:297) >>>> at >>>> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:529) >>>> at >>>> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:172) >>>> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) >>>> at >>>> org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:247) >>>> at >>>> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >>>> at java.lang.Thread.run(Thread.java:745) >>>> [2015-10-04 15:19:30,894] ERROR - Axis2Sender >>>> Content-Type:application/soap+xml; charset=UTF-8; >>>> action="urn:getQuoteResponse",<?xml version='1.0' >>>> encoding='utf-8'?><soapenv:Envelope xmlns:soapenv=" >>>> http://www.w3.org/2003/05/soap-envelope";><soapenv:Body/></soapenv:Envelope> >>>> Unexpected error sending message back >>>> org.apache.axis2.AxisFault: Failed to submit the response >>>> at >>>> org.apache.synapse.transport.passthru.PassThroughHttpSender.handleException(PassThroughHttpSender.java:610) >>>> at >>>> org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:269) >>>> at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442) >>>> at >>>> org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:212) >>>> at >>>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:444) >>>> at >>>> org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:102) >>>> at >>>> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:81) >>>> at >>>> org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:48) >>>> at >>>> org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:149) >>>> at >>>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:297) >>>> at >>>> org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:529) >>>> at >>>> org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:172) >>>> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) >>>> at >>>> org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:247) >>>> at >>>> org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >>>> at java.lang.Thread.run(Thread.java:745) >>>> *Caused by: java.lang.NullPointerException* >>>> * at >>>> org.apache.synapse.transport.passthru.util.SourceResponseFactory.create(SourceResponseFactory.java:64)* >>>> * at >>>> org.apache.synapse.transport.passthru.PassThroughHttpSender.submitResponse(PassThroughHttpSender.java:462)* >>>> * at >>>> org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:267)* >>>> * ... 16 more* >>>> [2015-10-04 15:19:30,898] INFO - LogMediator To: >>>> http://www.w3.org/2005/08/addressing/anonymous, WSAction: , >>>> SOAPAction: , MessageID: urn:uuid:4acfe16a-ee7d-4ab6-b35b-f0e3946160c9, >>>> Direction: response, MESSAGE = Executing default "fault" sequence, >>>> ERROR_CODE = 0, ERROR_MESSAGE = Content-Type:application/soap+xml; >>>> charset=UTF-8; action="urn:getQuoteResponse",<?xml version='1.0' >>>> encoding='utf-8'?><soapenv:Envelope xmlns:soapenv=" >>>> http://www.w3.org/2003/05/soap-envelope";><soapenv:Body/></soapenv:Envelope> >>>> Unexpected error sending message back, Envelope: <?xml version='1.0' >>>> encoding='utf-8'?><soapenv:Envelope xmlns:soapenv=" >>>> http://www.w3.org/2003/05/soap-envelope";><soapenv:Body><ns:getQuoteResponse >>>> xmlns:ns="http://services.samples";><ns:return xmlns:ax21=" >>>> http://services.samples/xsd"; xmlns:xsi=" >>>> http://www.w3.org/2001/XMLSchema-instance"; >>>> xsi:type="ax21:GetQuoteResponse"><ax21:change>-2.3202266677546106</ax21:change><ax21:earnings>12.650295806384626</ax21:earnings><ax21:high>-152.04270426044403</ax21:high><ax21:last>154.1916889021466</ax21:last><ax21:lastTradeTimestamp>Sun >>>> Oct 04 15:19:30 EDT >>>> 2015</ax21:lastTradeTimestamp><ax21:low>158.83675994993015</ax21:low><ax21:marketCap>4.917881726394041E7</ax21:marketCap><ax21:name>foo >>>> Company</ax21:name><ax21:open>158.0551704762858</ax21:open><ax21:peRatio>-17.10342133824433</ax21:peRatio><ax21:percentageChange>1.6236826882815951</ax21:percentageChange><ax21:prevClose>-142.89902112648588</ax21:prevClose><ax21:symbol>foo</ax21:symbol><ax21:volume>15263</ax21:volume></ns:return></ns:getQuoteResponse></soapenv:Body></soapenv:Envelope> >>>> [2015-10-04 15:21:30,364] WARN - SourceHandler Connection time out >>>> after request is read: http-incoming-10 >>>> >>>> -Ajith >>>> >>>> -- >>>> Ajith Vitharana. >>>> >>>> WSO2 Inc. - http://wso2.com >>>> Email : [email protected] >>>> Blog : http://vitharana.org >>>> Mobile : +1-812-360-5335 >>>> >>>> >>> >>> >>> -- >>> -- >>> Chanaka Fernando >>> Senior Technical Lead >>> WSO2, Inc.; http://wso2.com >>> lean.enterprise.middleware >>> >>> mobile: +94 773337238 >>> Blog : http://soatutorials.blogspot.com >>> LinkedIn:http://www.linkedin.com/pub/chanaka-fernando/19/a20/5b0 >>> Twitter:https://twitter.com/chanakaudaya >>> >>> >>> >>> >>> >> >> >> -- >> Ajith Vitharana. >> >> WSO2 Inc. - http://wso2.com >> Email : [email protected] >> Blog : http://vitharana.org >> Mobile : +1-812-360-5335 >> >> > > > -- > -- > Chanaka Fernando > Senior Technical Lead > WSO2, Inc.; http://wso2.com > lean.enterprise.middleware > > mobile: +94 773337238 > Blog : http://soatutorials.blogspot.com > LinkedIn:http://www.linkedin.com/pub/chanaka-fernando/19/a20/5b0 > Twitter:https://twitter.com/chanakaudaya > > > > > -- Ajith Vitharana. WSO2 Inc. - http://wso2.com Email : [email protected] Blog : http://vitharana.org Mobile : +1-812-360-5335
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