akka-http-auth-help

HttpAuth.scala

 def logUserIn(token:String):Future[Option[UserId]] = ???

 val withUserId: Directive1[User.Id] = {
    extractExecutionContext.flatMap { implicit ec =>
      headerValueByType[Authorization]().flatMap { authHdr =>
        {
          onSuccess(logUserIn(authHdr)).flatMap {
            case Some(userId) => provide[UserId](userId): Directive1[UserId]
            case None         => reject(MissingHeaderRejection(Authorization.name)): Directive1[UserId]
          }
        }
      }
    }
  }

[info] Compiling 1 Scala source to /Users/mar/git/sgrouples/target/scala-2.11/classes...
[warn] /Users/mar/git/sgrouples/src/main/scala/me/sgrouples/lib/rest/akkahttp/ChatApi.scala:91: Adaptation of argument list by inserting () has been deprecated: this is unlikely to be what you want.
[warn] signature: HeaderDirectives.headerValueByType[T <: akka.http.scaladsl.model.HttpHeader](magnet: akka.http.scaladsl.server.util.ClassMagnet[T]): akka.http.scaladsl.server.Directive1[T]
[warn] given arguments:
[warn] after adaptation: HeaderDirectives.headerValueByType((): Unit)
[warn] headerValueByTypeAuthorization.flatMap { authHdr =>
[warn] ^
[warn] one warning found