AuthorizedDirective.scala

def authorized: Directive1[OAuth2Token] = {
  bearerToken.flatMap {
    case Some(token) =>
      onComplete(tokenVerifier.verifyToken(token)).flatMap {
        _.map(username => provide(OAuth2Token(token, username)))
          .recover {
            case ex =>
              logger.error(ex, "Couldn't log in using provided authorization token")
              reject(AuthorizationFailedRejection).toDirective[Tuple1[OAuth2Token]]
          }
          .get
      }
    case None =>
      reject(AuthorizationFailedRejection)
  }
}