private def resultAsHttp()

in core/controller/src/main/scala/org/apache/openwhisk/core/controller/WebActions.scala [237:275]
26 lines of code
12 McCabe index (conditional complexity)

  private def resultAsHttp(result: JsValue, transid: TransactionId, rp: WebApiDirectives) = {
    Try {
      val JsObject(fields) = result
      val headers = fields.get("headers").map {
        case JsObject(hs) =>
          hs.flatMap {
            case (k, v) => headersFromJson(k, v)
          }.toList

        case _ => throw new Throwable("Invalid header")
      } getOrElse List.empty

      val body = fields.get("body")

      val intCode = fields.get(rp.statusCode).map {
        // the following throws an exception if the code is not a whole number or a valid code
        case JsNumber(c) => c.toIntExact

        // parse the string to an Int (not a BigInt) matching JsNumber case match above
        // c.toInt could throw an exception if the string isn't an integer
        case JsString(c) => c.toInt

        case _ => throw new Throwable("Illegal status code")
      }

      val code: Option[StatusCode] = intCode.map(c => StatusCodes.getForKey(c).getOrElse(StatusCodes.custom(c, "")))

      body.collect {
        case JsString(str) if str.nonEmpty   => interpretHttpResponse(code.getOrElse(OK), headers, str, transid)
        case JsString(str) /* str.isEmpty */ => respondWithEmptyEntity(code.getOrElse(NoContent), headers)
        case js if js != JsNull              => interpretHttpResponseAsJson(code.getOrElse(OK), headers, js, transid)
      } getOrElse respondWithEmptyEntity(code.getOrElse(NoContent), headers)

    } getOrElse {
      // either the result was not a JsObject or there was an exception validating the
      // response as an http result (including an invalid status code)
      terminate(BadRequest, Messages.invalidMedia(`message/http`))(transid, jsonPrettyPrinter)
    }
  }