Akka HTTP bindFlow leads to non working http tracing

[makssobolevs]

Description
When Akka HTTP server is created via Http().newServerAt("localhost", 8080).bindFlow(...) tracing doesn't work.
ServerBuilder#bindFlow

Steps to reproduce
App.scala

object App {
  val testRoute: Route =
    pathPrefix("test") {
      get {
        complete(HttpResponse(StatusCodes.OK))
      }
    }

  def main(args: Array[String]): Unit = {
    implicit val system = ActorSystem("Test")
    implicit val ec = system.dispatcher

    Http()
      .newServerAt("localhost", 8080)
      .bindFlow(testRoute)
  }
}

Example project can be used: https://github.com/makssobolevs/akka-open-telemetry-test
curl -v http://localhost:8080/test

Would expect to see
[otel.javaagent 2022-01-15 16:43:21:043 +0300] [Test-akka.actor.default-dispatcher-8] INFO io.opentelemetry.exporter.logging.LoggingSpanExporter - 'akka.request' : 74ca4c186762a998ef416fd184f9e463 5ae09c56f79725a0 SERVER [tracer: io.opentelemetry.akka-http-10.0:1.9.2] AttributesMap{data={thread.name=Test-akka.actor.default-dispatcher-8, http.method=GET, http.scheme=http, http.host=localhost:8080, thread.id=22, http.target=/test, http.user_agent=curl/7.80.0, http.flavor=1.1, http.status_code=200}, capacity=128, totalAddedValues=9}

Actual result
No span in logs

Version
opentelemetry-javaagent 1.9.2
Akka 2.6.14
Akka HTTP 10.2.4
Scala 2.13.5
OpenJDK 11.0.13

Additional context
There is the same issue with New Relic agent newrelic/newrelic-java-agent#189.
ServerBuilder#bind which works fine can be used so it's probably not a big issue.

[rahuldimri]

Are we still working on this issue? Can I work on this ?

[mateuszrzeszutek]

Hey @rahuldimri ,
I think nobody's currently working on this issue. Should I assign it to you?

[rahuldimri]

Yes please, I want to give a try !!

[rahuldimri]

@mateuszrzeszutek thanks for assigning this to me. I can see there are couple of PR request got closed and were part of this issue. Just wanted to check, do we need to continue working on this request.

[zackman0010]

@rahuldimri Our current draft PR will actually correct this issue, we're just still having to wait on our company to sign the Corporate CLA. I've been assured they're still working on getting it signed and that it should be completed soon.

[rahuldimri]

Sure no problem take you time.

[mateuszrzeszutek]

@rahuldimri Our current draft PR will actually correct this issue, we're just still having to wait on our company to sign the Corporate CLA. I've been assured they're still working on getting it signed and that it should be completed soon.

Oh, thanks for the info! I missed the fact that your PR is still open, sorry for that 🙏

@rahuldimri I'll remove your assignment from this issue -- sorry for the confusion!