Attaching the two APIs I used for testing. To reproduce this issue, create a tenant with the domain as 'wso2.com' and deploy these two APIs within the tenant space and restart the server.
Then access the API without the version using the following URL. http://localhost:8280/t/wso2.com/responseapi/weather?q=London Thanks, NuwanD. On Tue, Oct 6, 2015 at 2:53 PM, Chanaka Fernando <[email protected]> wrote: > 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 > > > > > -- Nuwan Dias Technical Lead - WSO2, Inc. http://wso2.com email : [email protected] Phone : +94 777 775 729
<?xml version="1.0" encoding="UTF-8"?> <api xmlns="http://ws.apache.org/ns/synapse"; name="admin-AT-wso2.com--ResponseAPI" context="/t/wso2.com/responseapi" version="1.0.0" version-type="url"> <resource methods="GET" url-mapping="/weather" faultSequence="fault"> <inSequence> <send> <endpoint name="admin-AT-wso2.com--ResponseAPI_APIproductionEndpoint_0"> <http uri-template="http://api.openweathermap.org/data/2.5"/> </endpoint> </send> </inSequence> <outSequence> <send/> </outSequence> </resource> </api>
<?xml version="1.0" encoding="UTF-8"?> <api xmlns="http://ws.apache.org/ns/synapse"; name="admin-AT-wso2.com--ResponseAPI" context="/t/wso2.com/responseapi"> <resource methods="GET" url-mapping="/weather" faultSequence="fault"> <inSequence> <property name="isDefault" expression="get-property('transport', 'WSO2_AM_API_DEFAULT_VERSION')"/> <filter source="get-property('isDefault')" regex="true"> <then> <log level="custom"> <property name="STATUS" value="Faulty invoking through default API.Dropping message to avoid recursion.."/> </log> <payloadFactory media-type="xml"> <format> <am:fault xmlns:am="http://wso2.org/apimanager";> <am:code>500</am:code> <am:type>Status report</am:type> <am:message>Internal Server Error</am:message> <am:description>Faulty invoking through default API</am:description> </am:fault> </format> <args/> </payloadFactory> <property name="HTTP_SC" value="500" scope="axis2"/> <property name="RESPONSE" value="true"/> <header name="To" action="remove"/> <property name="NO_ENTITY_BODY" scope="axis2" action="remove"/> <property name="ContentType" scope="axis2" action="remove"/> <property name="Authorization" scope="transport" action="remove"/> <property name="Host" scope="transport" action="remove"/> <property name="Accept" scope="transport" action="remove"/> <send/> </then> <else> <log level="custom"> <property name="TRACE" value="In Else"/> </log> <header name="WSO2_AM_API_DEFAULT_VERSION" scope="transport" value="true"/> <property name="uri.var.portnum" value="8280"/> <send> <endpoint> <http uri-template="http://localhost:{uri.var.portnum}/t/wso2.com/responseapi/1.0.0";> <timeout> <duration>60000</duration> <responseAction>fault</responseAction> </timeout> </http> </endpoint> </send> </else> </filter> </inSequence> <outSequence> <send/> </outSequence> </resource> </api>
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