argonaut json support for akka-http

gistfile1.scala

import akka.http.scaladsl.marshalling.{ ToEntityMarshaller, Marshaller }
import akka.http.scaladsl.model.{ContentTypes, HttpCharsets}
import akka.http.scaladsl.unmarshalling.{ FromEntityUnmarshaller, Unmarshaller }
import akka.stream.FlowMaterializer
import akka.http.scaladsl.model.MediaTypes.`application/json`
import argonaut.{Parse, DecodeJson, EncodeJson, Json}

object ArgonautJsonSupport {

  implicit def argonautJsonUnmarshallerConverter[T](decode: DecodeJson[T])(implicit mat: FlowMaterializer): FromEntityUnmarshaller[T] =
    argonautJsonObjUnmarshaller(decode, mat)

  implicit def argonautJsonObjUnmarshaller[T](implicit decode: DecodeJson[T], mat: FlowMaterializer): FromEntityUnmarshaller[T] =
    argonautJsonUnmarshaller.map(decode.decodeJson(_).toOption.get)

  implicit def argonautJsonUnmarshaller(implicit mat: FlowMaterializer): FromEntityUnmarshaller[Json] =
    Unmarshaller.byteStringUnmarshaller.forContentTypes(`application/json`).mapWithCharset { (data, charset) ⇒
      if(charset == HttpCharsets.`UTF-8`) Parse.parseOption(data.utf8String).get
      Parse.parseOption(data.decodeString(charset.nioCharset.name)).get
    }

  implicit def argonautJsonConverter[T](implicit encode: EncodeJson[T]): ToEntityMarshaller[T] =
    argonautJsonMarshaller.compose(encode.apply)

  implicit def argonautJsonMarshaller[T]: ToEntityMarshaller[Json] =
    Marshaller.StringMarshaller.wrap(ContentTypes.`application/json`)(_.nospaces)
}

Also check out https://github.com/hseeberger/akka-http-json, which now has Argonaut support.