The weld-probe-core org.jboss.weld.probe.JsonObjects#createBuiltInDependency produces an NPE when a built-in bean is injected using Instance<?> as is the case with this thorntail site:
{code:java}
@Inject
private Instance<RuntimeDeployer> deployer;
{code}
This ends up being handled by this block of code:
{code:java}
if (lazilyFetched != null && !Components.isBuiltinBeanButNotExtension(lazilyFetched)) {
JsonObjectBuilder lazilyFetchedDependency = createDependency(lazilyFetched, null, probe); // line 852
lazilyFetchedDependency.add(REQUIRED_TYPE, Formats.formatType(Components.getFacadeType(dependency.getInjectionPoint()), false)).add(QUALIFIERS,
createQualifiers(dependency.getInjectionPoint().getQualifiers(), false));
lazilyFetchedDependency.add(INFO, INFO_FETCHING_LAZILY);
lazilyFetchedDependency.add(IS_POTENTIAL, true);
builtInDependency.add(type, Json.arrayBuilder().add(lazilyFetchedDependency));
}
{code}
and the call to createDependency(lazilyFetched, null, probe) at line 852 is guaranteed to produce an NPE on the next line when the lazilyFetchedDependency is used as the createDependency will only return a non-null JsonObjectBuilder if its dependency argument is not null:
{code:java}
private static JsonObjectBuilder createDependency(Bean<?> bean, Dependency dependency, Probe probe) {
JsonObjectBuilder builder = null;
if (bean != null && dependency != null) {
builder = createSimpleBeanJson(bean, probe);
builder.add(REQUIRED_TYPE, Formats.formatType(dependency.getInjectionPoint().getType(), false)).add(QUALIFIERS,
createQualifiers(dependency.getInjectionPoint().getQualifiers(), false));
}
return builder;
}
{code}
This is what is seen when enabling development mode in my thorntail fork:
{noformat}
java.lang.NullPointerException
at org.jboss.weld.probe.JsonObjects.createBuiltInDependency(JsonObjects.java:853)
at org.jboss.weld.probe.JsonObjects.createDependencies(JsonObjects.java:816)
at org.jboss.weld.probe.JsonObjects.createFullBeanJson(JsonObjects.java:565)
at org.jboss.weld.probe.JsonObjects.createBeansJson(JsonObjects.java:469)
at org.jboss.weld.probe.DefaultJsonDataProvider.receiveBeans(DefaultJsonDataProvider.java:72)
at org.jboss.weld.probe.Exports.exportJsonData(Exports.java:45)
at org.jboss.weld.probe.ProbeExtension.exportDataIfNeeded(ProbeExtension.java:334)
at org.jboss.weld.probe.ProbeExtension.afterDeploymentValidation(ProbeExtension.java:170)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.weld.injection.StaticMethodInjectionPoint.invoke(StaticMethodInjectionPoint.java:88)
at org.jboss.weld.injection.MethodInvocationStrategy$SpecialParamPlusBeanManagerStrategy.invoke(MethodInvocationStrategy.java:144)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:299)
at org.jboss.weld.event.ExtensionObserverMethodImpl.sendEvent(ExtensionObserverMethodImpl.java:124)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:277)
at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:255)
at org.jboss.weld.event.ObserverNotifier.notifySyncObservers(ObserverNotifier.java:269)
at org.jboss.weld.event.ObserverNotifier.notify(ObserverNotifier.java:258)
at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:154)
at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:148)
at org.jboss.weld.bootstrap.events.AbstractContainerEvent.fire(AbstractContainerEvent.java:53)
at org.jboss.weld.bootstrap.events.AbstractDeploymentContainerEvent.fire(AbstractDeploymentContainerEvent.java:35)
at org.jboss.weld.bootstrap.events.AfterDeploymentValidationImpl.fire(AfterDeploymentValidationImpl.java:28)
at org.jboss.weld.bootstrap.WeldStartup.validateBeans(WeldStartup.java:482)
at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:90)
at org.jboss.weld.environment.se.Weld.initialize(Weld.java:767)
at org.wildfly.swarm.container.runtime.ServerBootstrapImpl.lambda$null$0(ServerBootstrapImpl.java:151)
at org.wildfly.swarm.container.runtime.LogSilencer$SilentExecutor.execute(LogSilencer.java:75)
at org.wildfly.swarm.container.runtime.ServerBootstrapImpl.lambda$bootstrap$1(ServerBootstrapImpl.java:120)
at org.wildfly.swarm.spi.api.ClassLoading.withTCCL(ClassLoading.java:43)
at org.wildfly.swarm.container.runtime.ServerBootstrapImpl.bootstrap(ServerBootstrapImpl.java:113)
at org.wildfly.swarm.Swarm.start(Swarm.java:398)
at org.wildfly.swarm.Swarm.main(Swarm.java:742)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.wildfly.swarm.bootstrap.MainInvoker.invoke(MainInvoker.java:53)
at org.wildfly.swarm.bootstrap.Main.run(Main.java:132)
at org.wildfly.swarm.bootstrap.Main.main(Main.java:85)
at org.jboss.weld.bootstrap.events.AbstractDeploymentContainerEvent.fire(AbstractDeploymentContainerEvent.java:37)
at org.jboss.weld.bootstrap.events.AfterDeploymentValidationImpl.fire(AfterDeploymentValidationImpl.java:28)
at org.jboss.weld.bootstrap.WeldStartup.validateBeans(WeldStartup.java:482)
at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:90)
at org.jboss.weld.environment.se.Weld.initialize(Weld.java:767)
at org.wildfly.swarm.container.runtime.ServerBootstrapImpl.lambda$null$0(ServerBootstrapImpl.java:151)
at org.wildfly.swarm.container.runtime.LogSilencer$SilentExecutor.execute(LogSilencer.java:75)
at org.wildfly.swarm.container.runtime.ServerBootstrapImpl.lambda$bootstrap$1(ServerBootstrapImpl.java:120)
at org.wildfly.swarm.spi.api.ClassLoading.withTCCL(ClassLoading.java:43)
... 10 more
{noformat}
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