spray.httpx.SprayJsonSupport.scala Maven / Gradle / Ivy

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/*
 * Copyright © 2011-2015 the spray project 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package spray.httpx

import spray.httpx.marshalling.Marshaller
import spray.httpx.unmarshalling.Unmarshaller
import spray.json._
import spray.http._

/**
 * A trait providing automatic to and from JSON marshalling/unmarshalling using an in-scope *spray-json* protocol.
 * Note that *spray-httpx* does not have an automatic dependency on *spray-json*.
 * You'll need to provide the appropriate *spray-json* artifacts yourself.
 */
trait SprayJsonSupport {

  implicit def sprayJsonUnmarshallerConverter[T](reader: RootJsonReader[T]) =
    sprayJsonUnmarshaller(reader)
  implicit def sprayJsonUnmarshaller[T: RootJsonReader] =
    Unmarshaller[T](MediaTypes.`application/json`) {
      case x: HttpEntity.NonEmpty ⇒
        val json = JsonParser(x.asString(defaultCharset = HttpCharsets.`UTF-8`))
        jsonReader[T].read(json)
    }
  implicit def sprayJsonMarshallerConverter[T](writer: RootJsonWriter[T])(implicit printer: JsonPrinter = PrettyPrinter) =
    sprayJsonMarshaller[T](writer, printer)
  implicit def sprayJsonMarshaller[T](implicit writer: RootJsonWriter[T], printer: JsonPrinter = PrettyPrinter) =
    Marshaller.delegate[T, String](ContentTypes.`application/json`) { value ⇒
      val json = writer.write(value)
      printer(json)
    }
}

object SprayJsonSupport extends SprayJsonSupport