Hi Heiko,

I have problems visualizing your idea, could you please post a more 
concrete example ?

On Friday, September 11, 2015 at 6:09:01 PM UTC+2, Heiko Seeberger wrote:
>
> You could probably use `grouped(2).map { case Seq(a, b) => (a, b) }` and 
> then use a graph with an `Unzip` stage ...
>
> Heiko
>
> --
>
> *Heiko Seeberger*
> Home: heikoseeberger.de
> Twitter: @hseeberger <https://twitter.com/hseeberger>
> Public key: keybase.io/hseeberger
>
> On 11 Sep 2015, at 16:10, lucian enache <[email protected] <javascript:>> 
> wrote:
>
> Hello everyone, for akka-http when handling a POST request, if I have my 
> entity as a Multipart.FormData ,
>  and I POST some JSON and a binary file, how can I split the two when I 
> parse the formData ?
>
> This is what I come up with so far
>
>  path("upload") { /* uploads a file to the database */
>           post {
>             entity(as[Multipart.FormData]) { (formData) =>
>
>
>               val uploadedUrlsFuture = formData.parts.map(_.entity.
> dataBytes).mapAsync(parallelism = 1)(part =>
>                 part
>                   .map(_.toArray)
>                   .runFold(ByteString())((totalBytes, bytes) => 
> totalBytes ++ bytes)
>                   .map(_.toArray[Byte]).map(ResourceManager.saveFile(_)) /* 
> TODO update this to a service */
>               ).grouped(100).runWith(Sink.head)
>               complete(OK)
>             }
>           }
>         }
>
>
> So if I have an Content-Length of 2 in a scenario where I post an JSON 
> Object and a binary file,
>  is there a way to split that up and handle the two separately?
>
> And is this a good way to provide an upload functionality to a backend 
> trough akka-http and akka-streams (are there better ways to achieve this)?
>
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