Hi Nuwan, I had a look into the code which is causing this NPE. According to the way it is written, this NPE can be occurred. I have tried to replicate what NuwanD has mentioned but couldn't reproduce the same NPE. This can be occurred due to synapse configuration issue.
@NuwanD: Can you share the configurations which you have used to reproduce this issue? Thanks, Chanaka On Thu, Oct 1, 2015 at 10:41 AM, Chanaka Fernando <[email protected]> wrote: > Hi All, > > We are looking into this issue. > > On Thu, Oct 1, 2015 at 10:37 AM, Sandapa Handakumbura <[email protected]> > wrote: > >> Hi Nuwan, >> >> I faced a similar issue during ESB 4.9.0 release testing. First request >> for proxy services (after tenant unloading/ server restart) failed in >> tenant mode [1]. Unfortunately ESB team could not reproduce it and I could >> not identify the exact steps to reproduce it either. >> >> Hope the team will look in to this since you have identified steps to >> reproduce the issue. >> >> [1] https://wso2.org/jira/browse/ESBJAVA-4142 >> >> Thanks, >> Sandapa >> >> >> On Thu, Oct 1, 2015 at 4:47 AM, Nuwan Dias <[email protected]> wrote: >> >>> Hi, >>> >>> I have a scenario on the ESB where I have created two APIs with the same >>> context in the tenant space. The first API doesn't have a version and the >>> second API has a version. The first API receives the request and forwards >>> to the second API. See illustration below. >>> >>> Client (/twitter) --> Twitter_API (/twitter/1.0.0) --> Twitter_API_v1.0.0 >>> >>> This scenario however causes the following [1] NPE on the first request >>> that's sent to the server. The subsequent requests pass until a server >>> restart happens. >>> >>> I tried logging into the management console of the ESB using tenant >>> credentials to check whether it was related to tenant loading. The first >>> request still failed with the same error. Any idea why this is happening? >>> This issue first occurred to me in API Manager after migrating to the >>> latest released version of Synapse. And is causing test failures in the >>> product. It worked fine in the older versions of Synapse (2.1.2- version >>> range). >>> >>> [1] >>> >>> [2015-10-01 04:41:39,519] ERROR - PassThroughHttpSender Failed to submit >>> the response >>> 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) >>> at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442) >>> at >>> org.wso2.carbon.core.multitenancy.transports.TenantTransportSender.invoke(TenantTransportSender.java:231) >>> 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.rest.Resource.process(Resource.java:297) >>> at org.apache.synapse.rest.API.process(API.java:335) >>> at >>> org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:97) >>> at >>> org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:52) >>> at >>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:266) >>> 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.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.processResponse(MultitenantMessageReceiver.java:166) >>> at >>> org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.receive(MultitenantMessageReceiver.java:82) >>> 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) >>> [2015-10-01 04:41:39,521] ERROR - Axis2Sender >>> Access-Control-Allow-Credentials:true,Access-Control-Allow-Methods:GET, >>> POST,Access-Control-Allow-Origin:*,Content-Type:application/json; >>> charset=utf-8,X-Source:redis,<?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.wso2.carbon.core.multitenancy.transports.TenantTransportSender.invoke(TenantTransportSender.java:231) >>> 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.rest.Resource.process(Resource.java:297) >>> at org.apache.synapse.rest.API.process(API.java:335) >>> at >>> org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:97) >>> at >>> org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:52) >>> at >>> org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:266) >>> 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.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.processResponse(MultitenantMessageReceiver.java:166) >>> at >>> org.wso2.carbon.core.multitenancy.MultitenantMessageReceiver.receive(MultitenantMessageReceiver.java:82) >>> 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) >>> ... 25 more >>> >>> Thanks, >>> NuwanD. >>> >>> -- >>> Nuwan Dias >>> >>> Technical Lead - WSO2, Inc. http://wso2.com >>> email : [email protected] >>> Phone : +94 777 775 729 >>> >>> _______________________________________________ >>> Dev mailing list >>> [email protected] >>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>> >>> >> >> >> -- >> Sandapa Handakumbura >> Associate Technical Lead >> WSO2.Inc. ; http://wso2.com/ >> M : +94777115866 >> >> _______________________________________________ >> Dev mailing list >> [email protected] >> http://wso2.org/cgi-bin/mailman/listinfo/dev >> >> > > > -- > -- > 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 > > > > > -- -- 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
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