ConfigProperties - Cannot convert "axe,sword,wand" to type java.util.List

[danielkec]

Environment Details

• Helidon Version: 3.0.0
• Helidon MP
• JDK version: 17.0.2+8-86
• OS: Ubuntu

---

Problem Description

MP Configuration @ConfigProperties doesn't properly convert to List, array works as expected.

Steps to reproduce

@ApplicationScoped
@ConfigProperties(prefix="sorcerer")
public class SorcererProperties {
    public @ConfigProperty(name="orcSlayingPotions") int potions;
    public boolean cloak;
    public List<String> weapons;
}

java.lang.IllegalArgumentException: Failed to convert property "sorcerer.weapons" from its value "axe,sword,wand" to java.util.List
        at io.helidon.config.mp.MpConfigImpl.convert(MpConfigImpl.java:312)
        at io.helidon.config.mp.MpConfigImpl.lambda$optionalValue$7(MpConfigImpl.java:193)
        at java.base/java.util.Optional.map(Optional.java:260)
        at io.helidon.config.mp.MpConfigImpl.optionalValue(MpConfigImpl.java:193)
        at io.helidon.config.mp.MpConfigImpl.getOptionalValue(MpConfigImpl.java:131)
        at io.helidon.config.mp.MpConfigProviderResolver$ConfigDelegate.getOptionalValue(MpConfigProviderResolver.java:356)
        at io.helidon.microprofile.config.FieldSetter.set(FieldSetter.java:61)
        at io.helidon.microprofile.config.ConfigBeanDescriptor.produce(ConfigBeanDescriptor.java:144)
        at io.helidon.microprofile.config.ConfigBeanDescriptor.produce(ConfigBeanDescriptor.java:132)
        at io.helidon.microprofile.config.ConfigCdiExtension.lambda$registerConfigProducer$5(ConfigCdiExtension.java:211)
        at org.jboss.weld.bootstrap.events.configurator.BeanConfiguratorImpl$CreateCallback.create(BeanConfiguratorImpl.java:368)
        at org.jboss.weld.bootstrap.events.configurator.BeanConfiguratorImpl$CreateCallback.access$700(BeanConfiguratorImpl.java:338)
        at org.jboss.weld.bootstrap.events.configurator.BeanConfiguratorImpl$ImmutableBean.create(BeanConfiguratorImpl.java:503)
        at org.jboss.weld.contexts.unbound.DependentContextImpl.get(DependentContextImpl.java:64)
        at org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100)
        at org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)
        at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:694)
        at org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:794)
        at org.jboss.weld.injection.ParameterInjectionPointImpl.getValueToInject(ParameterInjectionPointImpl.java:76)
        at org.jboss.weld.injection.ConstructorInjectionPoint.getParameterValues(ConstructorInjectionPoint.java:150)
        at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:75)
        at org.jboss.weld.injection.producer.AbstractInstantiator.newInstance(AbstractInstantiator.java:28)
        at org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:112)
        at org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:186)
        at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:160)
        at org.jboss.weld.contexts.AbstractContext.get(AbstractContext.java:96)
        at org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100)
        at org.jboss.weld.bean.ContextualInstanceStrategy$ApplicationScopedContextualInstanceStrategy.get(ContextualInstanceStrategy.java:140)
        at org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)
        at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:102)
        at org.jboss.weld.bean.proxy.ProxyMethodHandler.getInstance(ProxyMethodHandler.java:131)
        at com.manning.helidoninaction.ch03config.SorcererBean$Proxy$_$$_WeldClientProxy.toJson(Unknown Source)
        at com.manning.helidoninaction.ch03config.SorcererResource.getJsonOrc(SorcererResource.java:36)
        at com.manning.helidoninaction.ch03config.SorcererResource$Proxy$_$$_WeldClientProxy.getJsonOrc(Unknown Source)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:134)
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:177)
        at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:81)
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:475)
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:397)
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:81)
        at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:255)
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
        at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
        at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:684)
        at io.helidon.webserver.jersey.JerseySupport$JerseyHandler.lambda$doAccept$4(JerseySupport.java:326)
        at io.helidon.common.context.Contexts.runInContext(Contexts.java:117)
        at io.helidon.common.context.ContextAwareExecutorImpl.lambda$wrap$7(ContextAwareExecutorImpl.java:154)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.IllegalArgumentException: Cannot convert "axe,sword,wand" to type java.util.List
        at io.helidon.config.mp.MpConfigImpl$FailingConverter.convert(MpConfigImpl.java:546)
        at io.helidon.config.mp.MpConfigImpl.convert(MpConfigImpl.java:305)
        ... 60 more

[trentjeff]

fixed and merged