vaadin / vaadin/framework

NamespaceException thrown with OSGi application when using Karaf 4.2

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Description

This exception is logged and when one tries to access the application there is an error shown in browser

"Failed to load the bootstrap javascript: /vaadin-8.13.3/VAADIN/vaadinBootstrap.js?v=8.13.3"

It looks like that exception is thrown before https://github.com/vaadin/framework/blob/master/server/src/main/java/com/vaadin/server/osgi/BootstrapContribution.java is applied, thus bootstrap loading fails.

Used Karaf 4.2.11, Vaadin 8.13.3

2021-09-07T20:13:22,515 | ERROR | pipe-bundle:install -s mvn:org.vaadin.mmerruko/osgidashboard-demo/1.0 | WebApplication                   | 100 - org.ops4j.pax.web.pax-web-extender-whiteboard - 7.2.23 | Registration skipped for [ResourceWebElement{mapping=DefaultResourceMapping{httpContextId=com.vaadin,alias=/VAADIN/themes/demotheme/*,path=/VAADIN/themes/demotheme}}] due to error during registration
org.osgi.service.http.NamespaceException: alias: '/vaadin-8.13.3/VAADIN/themes/demotheme/*' is already in use in this or another context
	at org.ops4j.pax.web.service.spi.model.ServerModel.addServletModel(ServerModel.java:124) ~[?:?]
	at org.ops4j.pax.web.service.internal.HttpServiceStarted.registerServlet(HttpServiceStarted.java:246) ~[?:?]
	at org.ops4j.pax.web.service.internal.HttpServiceStarted.registerResources(HttpServiceStarted.java:310) ~[?:?]
	at org.ops4j.pax.web.service.internal.HttpServiceProxy.registerResources(HttpServiceProxy.java:76) ~[?:?]
	at org.ops4j.pax.web.extender.whiteboard.internal.element.ResourceWebElement.register(ResourceWebElement.java:57) ~[!/:?]
	at org.ops4j.pax.web.extender.whiteboard.internal.WebApplication.registerWebElement(WebApplication.java:392) [!/:?]
	at org.ops4j.pax.web.extender.whiteboard.internal.WebApplication.addWebElement(WebApplication.java:199) [!/:?]
	at org.ops4j.pax.web.extender.whiteboard.internal.tracker.AbstractTracker.addingService(AbstractTracker.java:193) [!/:?]
	at org.ops4j.pax.web.extender.whiteboard.internal.tracker.AbstractTracker.addingService(AbstractTracker.java:46) [!/:?]
	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:870) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:901) [osgi.core-6.0.0.jar:?]
	at org.apache.felix.framework.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:990) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:838) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.EventDispatcher.fireServiceEvent(EventDispatcher.java:545) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4595) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.Felix.registerService(Felix.java:3587) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:348) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:355) [org.apache.felix.framework-5.6.12.jar:?]
	at com.vaadin.osgi.resources.impl.VaadinResourceTrackerComponent$Delegate.registerImpl(VaadinResourceTrackerComponent.java:314) [!/:8.13.3]
	at com.vaadin.osgi.resources.impl.VaadinResourceTrackerComponent$Delegate.register(VaadinResourceTrackerComponent.java:244) [!/:8.13.3]
	at com.vaadin.osgi.resources.impl.VaadinResourceTrackerComponent.registerResource(VaadinResourceTrackerComponent.java:193) [!/:8.13.3]
	at com.vaadin.osgi.resources.impl.VaadinResourceTrackerComponent.bindTheme(VaadinResourceTrackerComponent.java:67) [!/:8.13.3]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_162]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_162]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_162]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_162]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.invokeMethod(BaseMethod.java:244) [!/:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.access$500(BaseMethod.java:41) [!/:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod$Resolved.invoke(BaseMethod.java:685) [!/:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.invoke(BaseMethod.java:529) [!/:?]
	at org.apache.felix.scr.impl.inject.methods.BindMethod.invoke(BindMethod.java:42) [!/:?]
	at org.apache.felix.scr.impl.manager.DependencyManager.doInvokeBindMethod(DependencyManager.java:2083) [!/:?]
	at org.apache.felix.scr.impl.manager.DependencyManager.invokeBindMethod(DependencyManager.java:2058) [!/:?]
	at org.apache.felix.scr.impl.manager.SingleComponentManager.invokeBindMethod(SingleComponentManager.java:443) [!/:?]
	at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.addedService(DependencyManager.java:333) [!/:?]
	at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.addedService(DependencyManager.java:301) [!/:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1200) [!/:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1121) [!/:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:928) [!/:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:864) [!/:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1152) [!/:?]
	at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:114) [!/:?]
	at org.apache.felix.framework.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:990) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:838) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.EventDispatcher.fireServiceEvent(EventDispatcher.java:545) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4595) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.Felix.registerService(Felix.java:3587) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:348) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:929) [!/:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:915) [!/:?]
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:133) [!/:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:984) [!/:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:752) [!/:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:674) [!/:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:437) [!/:?]
	at org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:667) [!/:?]
	at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:305) [!/:?]
	at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:554) [!/:?]
	at org.apache.felix.scr.impl.Activator.access$200(Activator.java:70) [!/:?]
	at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:421) [!/:?]
	at org.apache.felix.scr.impl.AbstractExtender.createExtension(AbstractExtender.java:196) [!/:?]
	at org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:169) [!/:?]
	at org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:49) [!/:?]
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:415) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444) [osgi.core-6.0.0.jar:?]
	at org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4579) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2174) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984) [org.apache.felix.framework-5.6.12.jar:?]
	at org.apache.karaf.bundle.command.Install.execute(Install.java:115) [!/:?]
	at org.apache.karaf.shell.impl.action.command.ActionCommand.execute(ActionCommand.java:84) [!/:4.2.11]
	at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:68) [!/:4.2.11]
	at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:86) [!/:4.2.11]
	at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:599) [!/:4.2.11]
	at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:526) [!/:4.2.11]
	at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:415) [!/:4.2.11]
	at org.apache.felix.gogo.runtime.Pipe.doCall(Pipe.java:416) [!/:4.2.11]
	at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:229) [!/:4.2.11]
	at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:59) [!/:4.2.11]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_162]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_162]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_162]

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failure with Karaf 4.2.11 and Vaadin 8.13.3, then inspect server/src/main/java/com/vaadin/server/osgi/BootstrapContribution.java alongside the logged resource-registration path. Confirm that the duplicate VAADIN theme alias no longer prevents bootstrap loading and that the application opens successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
28/100

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