ARC interferes with Smallrye ConfigProducer

Describe the bug

Language: Kotlin

I want to inject a config property of a list of custom types:

@Provider
class TestClass {
    @ConfigProperty(name = "property.list")
    private lateinit var typeList: List<MyType>

    @ConfigProperty(name = "property.single")
    private lateinit var singleType: MyType
}

While Smallrye can resolve and fill singleType, it fails on the list. The cause in the stack trace is:

Caused by: java.lang.IllegalArgumentException: SRCFG02005: Type has no raw type class: io.quarkus.arc.impl.WildcardTypeImpl@2d198533
	at io.smallrye.config.inject.ConfigProducerUtil.rawTypeOf(ConfigProducerUtil.java:224)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:155)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:149)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:160)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:149)
	at io.smallrye.config.inject.ConfigProducerUtil.convertValues(ConfigProducerUtil.java:106)
	at io.smallrye.config.inject.ConfigProducerUtil.getValue(ConfigProducerUtil.java:76)
	at io.smallrye.config.inject.ConfigProducerUtil.getValue(ConfigProducerUtil.java:58)
	at io.smallrye.config.inject.ConfigProducer.producesListConfigProperty(ConfigProducer.java:136)
	at io.smallrye.config.inject.ConfigProducer_ProducerMethod_producesListConfigProperty_1258131a638f518025054697883e1874162124ce_Bean.create(Unknown Source)
	at io.smallrye.config.inject.ConfigProducer_ProducerMethod_producesListConfigProperty_1258131a638f518025054697883e1874162124ce_Bean.get(Unknown Source)
	at io.smallrye.config.inject.ConfigProducer_ProducerMethod_producesListConfigProperty_1258131a638f518025054697883e1874162124ce_Bean.get(Unknown Source)
	at io.quarkus.arc.impl.CurrentInjectionPointProvider.get(CurrentInjectionPointProvider.java:60)
	... 89 more

From what I see, WildcardTypeImpl provides java.util.List as rawType - should it provide the upper bound of actualTypeArgument?

I tried mitigating it by providing an explizit Converter for List<MyType> but the result is the same.

Expected behavior

Config Converter for generic type of List<T> is used.

Actual behavior

Exception and quarkus fails to start.

java.lang.RuntimeException: java.lang.ExceptionInInitializerError

Caused by: java.lang.ExceptionInInitializerError

Caused by: java.lang.RuntimeException: Failed to start quarkus
	at io.quarkus.runner.ApplicationImpl.<clinit>(Unknown Source)
	... 48 more
Caused by: java.lang.RuntimeException: Error injecting java.util.List<? extends de.test.MyType> de.test.TestClass. typeList
Caused by: java.lang.IllegalArgumentException: SRCFG02005: Type has no raw type class: io.quarkus.arc.impl.WildcardTypeImpl@2d198533
	at io.smallrye.config.inject.ConfigProducerUtil.rawTypeOf(ConfigProducerUtil.java:224)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:155)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:149)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:160)
	at io.smallrye.config.inject.ConfigProducerUtil.resolveConverter(ConfigProducerUtil.java:149)
	at io.smallrye.config.inject.ConfigProducerUtil.convertValues(ConfigProducerUtil.java:106)
	at io.smallrye.config.inject.ConfigProducerUtil.getValue(ConfigProducerUtil.java:76)
	at io.smallrye.config.inject.ConfigProducerUtil.getValue(ConfigProducerUtil.java:58)
	at io.smallrye.config.inject.ConfigProducer.producesListConfigProperty(ConfigProducer.java:136)
	at io.smallrye.config.inject.ConfigProducer_ProducerMethod_producesListConfigProperty_1258131a638f518025054697883e1874162124ce_Bean.create(Unknown Source)
	at io.smallrye.config.inject.ConfigProducer_ProducerMethod_producesListConfigProperty_1258131a638f518025054697883e1874162124ce_Bean.get(Unknown Source)
	at io.smallrye.config.inject.ConfigProducer_ProducerMethod_producesListConfigProperty_1258131a638f518025054697883e1874162124ce_Bean.get(Unknown Source)
	at io.quarkus.arc.impl.CurrentInjectionPointProvider.get(CurrentInjectionPointProvider.java:60)
	... 89 more

How to Reproduce?

1. Create custom type
2. Create Type Converter and add is to org.eclipse.microprofile.config.spi.Converter
3. Create Bean using this type as generic parameter of a list
4. Start Quarkus (or a QuarkusTest)

Output of uname -a or ver

Darwin mymac.local 21.6.0 Darwin Kernel Version 21.6.0: Wed Aug 10 14:25:27 PDT 2022; root:xnu-8020.141.5~2/RELEASE_X86_64 x86_64

Output of java -version

openjdk version “11.0.16” 2022-07-19 OpenJDK Runtime Environment Temurin-11.0.16+8 (build 11.0.16+8) OpenJDK 64-Bit Server VM Temurin-11.0.16+8 (build 11.0.16+8, mixed mode)

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.12.0.Final

Build tool (ie. output of mvnw --version or gradlew --version)

Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)

Additional information

No response

[Ladicek]

I think it would make sense for SmallRye Config’s ConfigProducerUtil.rawTypeOf() to consider an upper bound of a wildcard type as its “raw” type.

[radcortez]

I’ll have a look.