Play promise to Akka future

playToAkka.scala

  /**
   * This is a helper function because there is no existing conversion from Play promise to Akka future in Play.
   * @param promise
   * @tparam A
   * @return
   */
  implicit def toAkkaFuture[A](promise: PlayPromise[A]): Future[A] = {
    val p = akka.dispatch.Promise[A]()
    promise extend1 {
      case Redeemed(value) => p success value
      case Thrown(exn) => p failure exn
    }
    p.future
  }