def singleItem[T <: IndexedItem]()

in app/controllers/Api.scala [402:422]


  def singleItem[T <: IndexedItem](agent: CollectorAgent[T], arn: String)(
      implicit
      request: RequestHeader,
      writes: Writes[T],
      executionContext: ExecutionContext
  ): Future[Result] =
    ApiResult.filter {
      val sources = agent.get()
      sources.flatMap { datum =>
        datum.data.find(_.arn == arn).map(datum.label -> Seq(_))
      }.toMap
    } reduce { sources =>
      sources.headOption.map { case (label, items) =>
        Api.itemJson(items.head, expand = true, label = Some(label)).get
      } getOrElse {
        throw ApiCallException(
          Json.obj("arn" -> s"Item with arn $arn doesn't exist"),
          NOT_FOUND
        )
      }
    }