On Tue, Oct 6, 2015 at 9:31 AM, Chanaka Fernando <[email protected]> wrote:
> Hi Ajith, > > I have already added a fix to the NPE and currently testing that. Just > wanted to let you know that this is happening due to a configuration issue. > The code was written assuming that this NPE cannot occur in proper > configurations. But there can be some edge cases where this can become > null. I am currently investigating on those. > Thanks Chanaka ! -Ajith > > On Tue, Oct 6, 2015 at 6:52 PM, Ajith Vitharana <[email protected]> wrote: > >> >> >> 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 >> >> > > > -- > -- > 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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