quarkus: Cannot deserialize LocalDate in @QueryParam due to missing ParamConverterProvider

Describe the bug I’m using Jackson (via quarkus-resteasy-jackson) as ObjectMapper with the KotlinModule and the JavaTimeModule registered using an ObjectMapperCustomizer. When I have an endpoint with a @QueryParam of type LocalDate quarkus does not start.

Expected behavior I expect resteasy to use the provided ObjectMapper to deserialize a String formated “YYYY-MM-DD” into an instance of LocalDate.

Actual behavior Omitting the name and method signature for brevity I get

RESTEASY003875: Unable to find a constructor that takes a String param or a valueOf() or fromString() method for javax.ws.rs.QueryParam("adate") for basetype: java.time.LocalDate

To Reproduce Steps to reproduce the behavior:

1. Use

        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-resteasy</artifactId>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-resteasy-jackson</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-kotlin</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
        </dependency>

1. Register a resource like

@GET
@Path("path")
fun broken( @QueryParam("adate") aDate: LocalDate) {}

1. Run a @QuarkusTest to try a start up the application.

Environment (please complete the following information):

• Output of uname -a or ver: Linux ninja-cgd 5.3.0-23-generic #25-Ubuntu SMP Tue Nov 12 09:22:33 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Output of java -version: openjdk version “11.0.5-ea” 2019-10-15 OpenJDK Runtime Environment (build 11.0.5-ea+10-post-Ubuntu-0ubuntu1) OpenJDK 64-Bit Server VM (build 11.0.5-ea+10-post-Ubuntu-0ubuntu1, mixed mode, sharing)
• GraalVM version (if different from Java): not used
• Quarkus version or git rev: 0.25.0 Additional context

The problem is fixed by adding

@Provider
class LocalDateConverter : ParamConverterProvider {

    override fun <T: Any?> getConverter(rawType: Class<T>?, genericType: Type?, annotations: Array<out Annotation>?): ParamConverter<T>? {
        return if (rawType == LocalDate::class.java) {
            object: ParamConverter<T> {
                val mapper = ObjectMapper().also { JacksonObjectMapperCustomizer().customize(it) }
                override fun toString(value: T?): String {
                    return mapper.writeValueAsString(value)
                }
                override fun fromString(value: String?): T {
                    return mapper.readValue(value, LocalDate::class.java) as T
                }
            }
        } else null
    }
}

to the project. I was expecting that this kind of Provider would be added out of the box when using Jackson’s JavaTimeModule.