Hello there,

I am trying to write a custom directive in akka http for something like 
authorize (with a bit of difference from what's available OOTB).

object AuthenticationUtils {
  def generateUserRequest(implicit system: ActorSystem, executionContext: 
ExecutionContext): Directive1[UserRequest] = {
    optionalHeaderValueByName("Authorization").flatMap {
      case Some(tokenValue) if Token.isValidTokenHeader(tokenValue) =>
        val token = Token.fromHeader(tokenValue).get
        val selection = system.actorSelection(
        implicit val timeout: Timeout = Timeout(2 minutes) //may be 
implicit timeout?
        val future = (selection ? RedisTokenActor.GenerateUserRequest(token
            .map { r => r.optUserRequest}
        /*onSuccess(future) { //this does not work.
          case Some(ur) => provide(ur)
          case _ => reject(AuthorizationFailedRejection)
        val res = Await.result(future, timeout.duration) //todo: make this 
        res match {
          case Some(ur) => provide(ur)
          case _ => reject(AuthorizationFailedRejection)

      case _ =>  reject(AuthorizationFailedRejection)

My question is that, how do I async the execution of the `future` within a 
directive? When I use onSuccess, the return objects are not compatible.
Please advice on how do I resolve this. When I use it synchronously, the 
above code works as desired.


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