Name of the method appears mangled when result is `kotlin.Result`

[maxkomarychev]

Related links:

• [Feature] Support for new Kotlin inline classes as parameters and return values on @Transactional  micronaut-core#5290 (comment)
• Inline KSP classes micronaut-core#9716

Expected Behavior

Name of the method should appear in the trace as is or as specified in the first arg of @NewSpan.

Actual Behaviour

The name appears with extra characters, given this code:

@Singleton
open class OneService {
    @NewSpan
    open fun hello(): Result<String> {
        return Result.success("hello")
    }
}

the name of the method in the trace appears like this:

and when doing

@NewSpan("helloworld")

it appears like this:

Steps To Reproduce

Set up a dummy service and a controller:

@Singleton
open class OneService {
    @NewSpan("helloworld")
    open fun hello(): Result<String> {
        return Result.success("hello")
    }
}

@Controller("/probes")
class Healthcheck(val oneService: OneService) {
    @Get("/health")
    fun health(): String {
        return "health" + oneService.hello().getOrThrow()
    }
}

Run jaeger:

docker run --name jaeger \
  -e COLLECTOR_OTLP_ENABLED=true \
  -p 16686:16686 \
  -p 4317:4317 \
  -p 4318:4318 \
  jaegertracing/all-in-one

Call the method: curl http://localhost:8080/probes/health

Observe wrong names in the trace.

Environment Information

• macos 14.5 (23F79)
• jdk 17

Example Application

No response

Version

4.4.2, 4.50

[natalie-zamani]

We're also running into this. It's effectively making troubleshooting issues via stack traces impossible for us, which is pretty bad.