Re: [akka-user] Re: Debugging marshalling implicits

2016-09-20 Thread Richard Rodseth 
Thanks. It appears to be the absence of an Either marshaller ( Result[T] is
an alias for Either[APIError,T] )
Is that something that was available in Spray, but not in Akka HTTP ?
I see this got merged:
https://github.com/akka/akka/pull/20274
but it's an Unmarshaller.

On Tue, Sep 20, 2016 at 3:18 AM, 'Johannes Rudolph' via Akka User List <
akka-user@googlegroups.com> wrote:

> Hi,
>
> On Tuesday, September 13, 2016 at 4:26:55 PM UTC+2, rrodseth wrote:
> > Is this the right way to debug the missing conversion?
> > val prm = implicitly[Future[PimpedResult[(StatusCode,
> Result[StatusDTO])]] => ToResponseMarshallable]
>
>
> Try
>
> implicitly[ToResponseMarshaller[Future[PimpedResult[(StatusCode,
> Result[StatusDTO])]]]
>
>
> then
>
>
> implicitly[ToResponseMarshaller[PimpedResult[(StatusCode,
> Result[StatusDTO])]]
>
>
> then
>
> implicitly[ToEntityMarshaller[Result[StatusDTO]]] // required by
> APICustomMarshallers.statusMarshaller
>
> or just
>
> statusMarshaller[Result[StatusDTO]]]
>
>
> and see which one still succeeds. Then you need to work back from the
> simple ones to the more complex types, trying to get those to work.
>
> HTH
> Johannes
>
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[akka-user] Re: Debugging marshalling implicits

2016-09-20 Thread 'Johannes Rudolph' via Akka User List 
Hi,

On Tuesday, September 13, 2016 at 4:26:55 PM UTC+2, rrodseth wrote:
> Is this the right way to debug the missing conversion? 
> val prm = implicitly[Future[PimpedResult[(StatusCode, 
Result[StatusDTO])]] => ToResponseMarshallable]


Try 

implicitly[ToResponseMarshaller[Future[PimpedResult[(StatusCode, 
Result[StatusDTO])]]]


then 


implicitly[ToResponseMarshaller[PimpedResult[(StatusCode, 
Result[StatusDTO])]]


then 

implicitly[ToEntityMarshaller[Result[StatusDTO]]] // required by 
APICustomMarshallers.statusMarshaller

or just 

statusMarshaller[Result[StatusDTO]]]


and see which one still succeeds. Then you need to work back from the 
simple ones to the more complex types, trying to get those to work.

HTH
Johannes

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[akka-user] Re: Debugging marshalling implicits

2016-09-13 Thread Richard Rodseth 
Bump.

Is this the right way to debug the missing conversion?
val prm = implicitly[Future[PimpedResult[(StatusCode, Result[StatusDTO])]]
=> ToResponseMarshallable]


On Wed, Sep 7, 2016 at 8:43 PM, Richard Rodseth  wrote:

> Can anyone help me with this please?
> I have the following in my route:
>
> val result = (requestHandler ? RequestHandler.AskForStatus).
> mapTo[PimpedResult[(StatusCode, Result[StatusDTO])]]
>
> onSuccess(result) {
>   case _ => complete(result)
> }
>
> The mapTo is really just to assist my debugging. The result could be a
> Result[StatusDTO] or a PimpedResult.
> Anyway, I get the following error on the complete call:
>
> type mismatch; found : 
> scala.concurrent.Future[PimpedResult[(akka.http.scaladsl.model.StatusCode,
> Result[StatusDTO])]] (which expands to) scala.concurrent.Future[
> PimpedResult[(akka.http.scaladsl.model.StatusCode,
> scala.util.Either[APIError,StatusDTO])]] required: akka.http.scaladsl.
> marshalling.ToResponseMarshallable
>
> I added the following after the mapTo:
>
> val prm = implicitly[Future[PimpedResult[(StatusCode,
> Result[StatusDTO])]] => ToResponseMarshallable]
>
> and that line gets this error:
>
> Multiple markers at this line:
>
> not enough arguments for method implicitly: (implicit e:
> scala.concurrent.Future[PimpedResult[(akka.http.scaladsl.model.StatusCode,
> Result[StatusDTO])]] ⇒ akka.http.scaladsl.marshalling.
> ToResponseMarshallable)scala.concurrent.Future[PimpedResult[(akka.http.scaladsl.model.StatusCode,
> Result[StatusDTO])]] ⇒ akka.http.scaladsl.marshalling.ToResponseMarshallable.
> Unspecified value parameter e.
> No implicit view available from scala.concurrent.Future[
> PimpedResult[(akka.http.scaladsl.model.StatusCode, Result[StatusDTO])]] ⇒
> akka.http.scaladsl.marshalling.ToResponseMarshallable.
>
> Here is the custom marshaller. I know it's in scope because the
> errorMarshaller works in the case where the response is Result[StatusDTO]
> rather than PimpedResult
>
> // See https://bitbucket.org/binarycamp/spray-contrib/src
> trait APICustomMarshallers {
>
>   implicit def errorMarshaller[T](
> implicit translator: ErrorTranslator[T],
> statusCodeMapper: ErrorToStatusCodeMapper,
> m: ToEntityMarshaller[T]): ToResponseMarshaller[APIError] = {
>
> val base = PredefinedToResponseMarshallers.
> fromStatusCodeAndHeadersAndValue
> val result = base.compose {
>   error: APIError => 
> (statusCodeMapper.orElse(ErrorToStatusCodeMapper.Default)(error),
> DefaultHttpHeaders.NoCacheHeaders, translator(error))
> }
> result
>   }
>
>   implicit def statusMarshaller[T](implicit m: ToEntityMarshaller[T]):
> ToResponseMarshaller[PimpedResult[(StatusCode, T)]] = {
> val base = PredefinedToResponseMarshallers.
> fromStatusCodeAndHeadersAndValue // Needs the entity marshaller
> val result = base.compose {
>   pimpedResult: PimpedResult[(StatusCode, T)] =>
> pimpedResult.result match {
>   case Right(response) => (response._1, 
> DefaultHttpHeaders.NoCacheHeaders,
> response._2)
>   case _   => throw new RuntimeException("StatusMarshaller
> got invalid PimpedResult")
> }
> }
> result
>   }
> }
>
> Thanks for any help.
>
>
>
>
>

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