Unable to compile project using Akka-HTTP client V1.0

[Richard Grossman]

Hi

I'm confronted to this problem :

I'm using this dependencies:
akka-http-experimental_2.11 V1.0 latest release

My code is pretty simple as exactly like the sample on the documentation

class HttpFlow(implicit system: ActorSystem, actorMaterializer: ActorMaterializer) {

  protected implicit val executor: ExecutionContext = system.dispatcher

  val poolConfig = ConnectionPoolSettings(system)
  val flowConnection = Http().cachedHostConnectionPool[Unit]("rtbe.adsymptotic.com", settings = poolConfig)

  def callHTTP(request : HttpRequest) : Future[(Try[HttpResponse], Unit)] = {
    Source.single[HttpRequest](request)
      .via(flowConnection)
      .runWith(Sink.head)
  }
}

I got a compilation error:
Error:(27, 12) type mismatch;
 found   : akka.stream.scaladsl.Flow[(akka.http.scaladsl.model.HttpRequest, Nothing),(scala.util.Try[akka.http.scaladsl.model.HttpResponse], Nothing),akka.http.scaladsl.Http.HostConnectionPool]
 required: akka.stream.Graph[akka.stream.FlowShape[akka.http.scaladsl.model.HttpRequest,?],?]
      .via(flowConnection)
           ^

Is another way to use the HTTP client in 1.0 and the documentation is not updated ?

Thanks

[Roland Kuhn]

Hi Richard,

the documentation is actually compiled and tested: you overlooked "-> 42" in the example, which in your case needs to be "-> ()" (in the argument to Source.single).

Regards,

Roland

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[Richard Grossman]

Many Thanks Roland for your answer

Could you explain what the signification of "-> 42" or "-> ()" ?

Is this a Map Entry ? if yes what to do after with the 42 ?

Thanks

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[Roland Kuhn]

Hi Richard,

since you were referring to the documentation I had assumed that you read http://doc.akka.io/docs/akka-stream-and-http-experimental/1.0/scala/http/client-side/host-level.html. You may want to contrast with http://doc.akka.io/docs/akka-stream-and-http-experimental/1.0/scala/http/client-side/connection-level.html as well.

Regards,

Roland