I've yet to test this out, but it compiles. Hope I'm on the right track.
trait APIStatusMarshallers {
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
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
}
}
On Fri, Sep 2, 2016 at 1:01 PM, Richard Rodseth <rrods...@gmail.com> wrote:
> I'm guessing the errorMarshaller and statusMarshaller shown (which use
> compose) need to be recast according to
>
> http://doc.akka.io/docs/akka/2.4.9/scala/http/common/
> marshalling.html#Deriving_Marshallers
>
> But that paragraph of documentation could really use an example.
>
>
> On Thu, Sep 1, 2016 at 3:19 PM, Richard Rodseth <rrods...@gmail.com>
> wrote:
>
>> I'm struggling to convert the following response marshaller.
>> ToResponseMarshaller is a trait and object in Spray, and Marshaller takes
>> one type parameter.
>>
>> I've read the docs, and am stumped. Can anyone provide further guidance?
>>
>> // See https://bitbucket.org/binarycamp/spray-contrib/src
>>
>>
>> trait APIStatusMarshallers {
>>
>>
>> implicit def errorMarshaller[T](implicit translator: ErrorTranslator[
>> T],
>>
>> statusCodeMapper:
>> ErrorToStatusCodeMapper,
>>
>> m: Marshaller[T]): ToResponseMarshaller
>> [APIError] =
>>
>> ToResponseMarshaller.fromStatusCodeAndHeadersAndT.compose {
>>
>> error => (statusCodeMapper.orElse(ErrorToStatusCodeMapper.Default)(
>> error), DefaultHttpHeaders.NoCacheHeaders,translator(error))
>>
>> }
>>
>>
>>
>> implicit def statusMarshaller[T](implicit m: Marshaller[T]):
>> ToResponseMarshaller[PimpedResult[(StatusCode, T)]] = {
>>
>> ToResponseMarshaller.fromStatusCodeAndHeadersAndT.compose {
>>
>> pimpedResult => pimpedResult.result match {
>>
>> case Right(response) => (response._1, DefaultHttpHeaders.
>> NoCacheHeaders, response._2)
>>
>> case _ => throw new RuntimeException("StatusMarshaller got
>> invalid PimpedResult")
>>
>> }
>>
>> }
>>
>> }
>>
>> }
>>
>
>
--
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>>>>>>>>>> Check the FAQ:
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