Hi On Wed, Jun 6, 2012 at 10:42 AM, Sinthuja Ragendran <[email protected]>wrote:
> Hi, > > On Wed, Jun 6, 2012 at 10:28 AM, Rajika Kumarasiri <[email protected]>wrote: > >> Yeah this is what I meant, you can instantiate an object of the relevant >> admin services and use them. >> >> Rajika >> >> >> On Wed, Jun 6, 2012 at 10:26 AM, Nuwan Bandara <[email protected]> wrote: >> >>> Why do you need to create service stubs if you are in the backend >>> anyway. If I understand your scenario correctly, you can simply do a Java >>> call, importing dashboard packages >>> >>> In my scenario there is possibility that the dashboard admin service is > not available in the same JVM, and that is why I thought of using the stub. > > Basically I'm writing a bam artifact deployer, which consists of some > gadget artifacts and I wanted to call the dashboard services to deploy > those artifacts, if the dashboard admin service is available. In BAM there > is a use case where we can separate the presentation layer, and in that > case the dashboard won't be under same JVM. In that case, I should avoid > deploying gadget artifacts and deploy other bam related artifacts, > DashboardService is not a UI module, if you do FE/BE separation DashboardService will be in the backend. > > In this situation, I guess the stub would work more better. And If i > directly instantiate and use the object I will get ClassNotFoundException. > > So what would be the better way? > > > Thanks, > Sinthuja. > >> Regards, >>> /Nuwan >>> >>> >>> On Wed, Jun 6, 2012 at 10:21 AM, Sinthuja Ragendran >>> <[email protected]>wrote: >>> >>>> >>>> Hi, >>>> >>>> On Wed, Jun 6, 2012 at 10:09 AM, Rajika Kumarasiri <[email protected]>wrote: >>>> >>>>> What prevent you calling the admin service directly ? >>>>> >>>>> >>>> Since I'm using the stub in by BE component to call the admin service, >>>> I thought of using local transport as it's more faster. >>>> >>>> And also If I use http/https, i need credentials to authenticate and >>>> get the session. >>>> >>>> Alternatively, there is no declarative service available for the >>>> Dashboard Service. >>>> >>>> Due to all these, I thought local transport would be better way to call >>>> the stub in my case. >>>> >>>> >>>> Thanks, >>>> Sinthuja. >>>> >>>>> Rajika >>>>> >>>>> On Wed, Jun 6, 2012 at 8:22 AM, Sinthuja Ragendran >>>>> <[email protected]>wrote: >>>>> >>>>>> Hi All, >>>>>> >>>>>> In my BE component, I need to call some admin services to through >>>>>> stub and I want to use local transport for that. >>>>>> >>>>>> For that, I changed the service url to >>>>>> "local://services/DashboardService" in order to communicate with admin >>>>>> service 'DashboardService', and passed the configuration context which is >>>>>> obtained from ConfigurationContextService - OSGI declarative service. >>>>>> >>>>>> But I'm getting the following exception when I try to invoke a method >>>>>> from the stub. >>>>>> >>>>>> java.lang.NullPointerException >>>>>> at >>>>>> org.apache.axis2.engine.DispatchPhase.fillContextsFromSessionContext(DispatchPhase.java:318) >>>>>> at >>>>>> org.apache.axis2.engine.DispatchPhase.loadContexts(DispatchPhase.java:185) >>>>>> at >>>>>> org.apache.axis2.engine.DispatchPhase.checkPostConditions(DispatchPhase.java:113) >>>>>> at org.apache.axis2.engine.Phase.invoke(Phase.java:329) >>>>>> at org.apache.axis2.engine.AxisEngine.invoke(AxisEngine.java:262) >>>>>> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:168) >>>>>> at >>>>>> org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:166) >>>>>> at >>>>>> org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:79) >>>>>> at >>>>>> org.apache.axis2.transport.local.LocalTransportSender.finalizeSendWithToAddress(LocalTransportSender.java:102) >>>>>> at >>>>>> org.apache.axis2.transport.local.LocalTransportSender.invoke(LocalTransportSender.java:77) >>>>>> at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443) >>>>>> at >>>>>> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:406) >>>>>> at >>>>>> org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229) >>>>>> at >>>>>> org.apache.axis2.client.OperationClient.execute(OperationClient.java:165) >>>>>> at >>>>>> org.wso2.carbon.dashboard.stub.DashboardServiceStub.addNewTab(DashboardServiceStub.java:5089) >>>>>> at >>>>>> org.wso2.carbon.bam.toolbox.deployer.client.DashboardClient.addTab(DashboardClient.java:74) >>>>>> at >>>>>> org.wso2.carbon.bam.toolbox.deployer.deploy.BAMArtifactDeployerManager.deployGadget(BAMArtifactDeployerManager.java:95) >>>>>> at >>>>>> org.wso2.carbon.bam.toolbox.deployer.deploy.BAMArtifactDeployerManager.deploy(BAMArtifactDeployerManager.java:124) >>>>>> at >>>>>> org.wso2.carbon.bam.toolbox.deployer.core.BAMToolBoxDeployer.deploy(BAMToolBoxDeployer.java:92) >>>>>> at >>>>>> org.apache.axis2.deployment.repository.util.DeploymentFileData.deploy(DeploymentFileData.java:136) >>>>>> at >>>>>> org.apache.axis2.deployment.DeploymentEngine.doDeploy(DeploymentEngine.java:810) >>>>>> at >>>>>> org.apache.axis2.deployment.repository.util.WSInfoList.update(WSInfoList.java:144) >>>>>> at >>>>>> org.apache.axis2.deployment.RepositoryListener.update(RepositoryListener.java:377) >>>>>> at >>>>>> org.apache.axis2.deployment.RepositoryListener.checkServices(RepositoryListener.java:254) >>>>>> at >>>>>> org.apache.axis2.deployment.RepositoryListener.startListener(RepositoryListener.java:371) >>>>>> at >>>>>> org.apache.axis2.deployment.scheduler.SchedulerTask.checkRepository(SchedulerTask.java:59) >>>>>> at >>>>>> org.apache.axis2.deployment.scheduler.SchedulerTask.run(SchedulerTask.java:67) >>>>>> at >>>>>> org.wso2.carbon.core.deployment.CarbonDeploymentSchedulerTask.run(CarbonDeploymentSchedulerTask.java:76) >>>>>> at >>>>>> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) >>>>>> at >>>>>> java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) >>>>>> at >>>>>> java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) >>>>>> at >>>>>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) >>>>>> at >>>>>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) >>>>>> at >>>>>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) >>>>>> at >>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) >>>>>> at >>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) >>>>>> at java.lang.Thread.run(Thread.java:662) >>>>>> >>>>>> I debug and checked in the axis2, and seems the error NPE is because >>>>>> of transportIn is being null in the messageContext and the line which >>>>>> throws the exception is, >>>>>> >>>>>> TransportListener listener = >>>>>> msgContext.getTransportIn().getReceiver(); >>>>>> >>>>>> >>>>>> How this should be done? Is there any additional configuration that I >>>>>> need to add for this? >>>>>> >>>>>> Any help is appreciated. >>>>>> >>>>>> >>>>>> >>>>>> Thanks, >>>>>> Sinthuja. >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Dev mailing list >>>>>> [email protected] >>>>>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>>>>> >>>>>> >>>>> >>>> >>>> _______________________________________________ >>>> Dev mailing list >>>> [email protected] >>>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>>> >>>> >>> >>> >>> -- >>> *Thanks & Regards, >>> >>> Nuwan Bandara >>> Associate Technical Lead & Member, MC, Development Technologies >>> WSO2 Inc. - lean . enterprise . middleware | http://wso2.com >>> blog : http://nuwanbando.com; email: [email protected]; phone: +94 11 763 >>> 9629 >>> * >>> <http://www.nuwanbando.com/> >>> >> >> > -- *Thanks & Regards, Nuwan Bandara Associate Technical Lead & Member, MC, Development Technologies WSO2 Inc. - lean . enterprise . middleware | http://wso2.com blog : http://nuwanbando.com; email: [email protected]; phone: +94 11 763 9629 * <http://www.nuwanbando.com/>
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