Tracing propagation does not work in ControllerAdvice with async controllers since 3.2.7

[raczynsm]

In my application I have async controllers and ControllerAdvice with exceptions handling.
Tracing propagation was working until I upgraded from 3.2.6 to 3.2.7.
I use below dependencies:

implementation("org.springframework.boot:spring-boot-starter-web")
implementation("io.micrometer:micrometer-tracing-bridge-brave")

This is minimal reproduction for the issue:

• main class:

package com.example.tracing

import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication
import org.springframework.scheduling.annotation.EnableAsync

@SpringBootApplication
@EnableAsync
class TracingApplication

fun main(args: Array<String>) {
	runApplication<TracingApplication>(*args)
}

• async controller with controller advice:

package com.example.tracing

import io.micrometer.context.ContextExecutorService
import io.micrometer.context.ContextSnapshotFactory
import io.micrometer.tracing.Tracer
import org.springframework.context.annotation.Configuration
import org.springframework.http.ResponseEntity
import org.springframework.scheduling.annotation.Async
import org.springframework.scheduling.annotation.AsyncConfigurer
import org.springframework.stereotype.Controller
import org.springframework.web.bind.annotation.ControllerAdvice
import org.springframework.web.bind.annotation.ExceptionHandler
import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.ResponseBody
import org.springframework.web.context.request.WebRequest
import java.util.concurrent.CompletableFuture
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors


@Controller
class WebController(
    val tracer : Tracer
) {

    @Async
    @GetMapping(path = ["/hello"], produces = ["text/plain"])
    @ResponseBody
    fun hello() : CompletableFuture<String> {
        val traceId = tracer.currentSpan()?.context()?.traceId()
        println("TRACING in Controller: $traceId")
        return CompletableFuture.completedFuture("Hello with [${traceId}]\n")
    }

    @Async
    @GetMapping(path = ["/fail"], produces = ["text/plain"])
    @ResponseBody
    fun fail() : CompletableFuture<String> {
        val traceId = tracer.currentSpan()?.context()?.traceId()
        println("TRACING in Controller: $traceId")
        throw IllegalStateException()
    }
}

@ControllerAdvice
class MyErrorHandler(
    val tracer : Tracer
) {

    @ExceptionHandler(value = [IllegalStateException::class])
    protected fun handleException(ex: RuntimeException, request: WebRequest): ResponseEntity<String> {
        val traceId = tracer.currentSpan()?.context()?.traceId()
        println("TRACING in ErrorHandler: $traceId")
        return ResponseEntity.ok("FAILURE with [$traceId]\n")
    }
}

@Configuration
internal class AsyncContextPropagationConfig : AsyncConfigurer {
    override fun getAsyncExecutor() = ContextExecutorService.wrap(executor) {
        contextSnapshotFactory.captureAll()
    }

    companion object {
        val executor: ExecutorService = Executors.newCachedThreadPool()
        val contextSnapshotFactory = ContextSnapshotFactory.builder()
            .build()
    }
}

Since 3.2.7 curl http://localhost:8080/fail returns:

FAILURE with [null]

before 3.2.7 there was a traceId:

FAILURE with [667e86d51406d20c273b9f4e8a9bc9a5]

[bclozel]

Duplicates spring-projects/spring-framework#33091

[raczynsm]

@bclozel I am not sure if this is exactly the same issue as the other one mentioned regression between 3.3.0 and 3.3.1 and in my case the regression is between 3.2.6 and 3.2.7

[wilkinsona]

Spring Boot 3.2.7 and 3.3.1 both contain the same Spring Framework upgrade so they're both affected by spring-projects/spring-framework#32730.

[bclozel]

Apologies if this was closed as a duplicate too quickly.
I assumed that this was a duplicate of spring-projects/spring-framework#33091 because both Spring Boot 3.2.7 and 3.3.1 upgraded to Spring Framework 6.1.9 (see #41019 and #41034).

Can you confirm you can reproduce the problem even after downgrading your application to Spring Framework 6.1.8?
You can use the following for Gradle:

ext['spring-framework.version'] = "6.1.8"

If you cannot reproduce the problem after the downgrade, this means that the problem is in Spring Framework directly and that it is most likely linked to spring-projects/spring-framework#32730.