some.scala

Class SomeClass(){
private def get(url: String): Future[String] = { 
    for {
      serviceResponse <- sendGetRequest(url)
    } yield checkStatusCode(url, serviceResponse)
  }

  private def checkStatusCode(
      url: String,
      response: HttpResponse[String]
  ): String = { 
    if (response.is2xx) response.body
    else
      throw new RuntimeException(
        s"$url is responding with a non 200 series status code."
      )   
  }

  private def sendGetRequest(url: String): Future[HttpResponse[String]] =
    Future {
      Http(url)
        .headers(criticalHeaders)
        .asString
    }.recoverWith {
      case NonFatal(_) =>
        throw new RuntimeException(s"$url is failing to respond.")
    }   

  private def criticalHeaders = Seq(
    "x-http-request-id" -> Context.getRequestContext.getRequestId,
    "x-http-caller-id"  -> Context.getRequestContext.getCallerId,
    "Accept" -> "application/json"
  )
  }