play-json-support

Add Akka http play json support.

Versions

Version	Akka-http version	Play-json version
0.2.0	1.0-RC3	2.4.0
0.1.0	1.0-RC1	2.3.8

Dependency

Add the following dependency and the bintray host

resolvers += "octalmind maven" at "http://dl.bintray.com/guillaumebreton/maven"
libraryDependencies += "octalmind" % "play-json-support_2.11" % "0.2.0"

Usage

import akka.http.scaladsl.server._
import akka.http.scaladsl.model._
import akka.http.scaladsl.server.directives._
import akka.http.scaladsl.Http
import akka.actor.ActorSystem
import akka.stream.ActorFlowMaterializer
import marshallers.PlayJsonSupport

import play.api.libs.json._
import play.api.libs.functional.syntax._

object UserJson {

  case class User(id: Option[Int], firstname: String, lastname: String)
  case class UserCreateRequest(firstname: String, lastname: String)

  implicit val userCreateReads = (
    (__ \ "firstname").read[String] ~
    (__ \ "lastname").read[String])(UserCreateRequest)

  implicit val userWrites = (
    (__ \ "id").write[Option[Int]] ~
    (__ \ "firstname").write[String] ~
    (__ \ "lastname").write[String])(unlift(User.unapply))

}

object Main extends App {

  import Directives._
  import PlayJsonSupport._
  import UserJson._
  implicit val system = ActorSystem()
  implicit val dispatcher = system.dispatcher
  implicit val materializer = ActorFlowMaterializer()

  val routes = {
    path("users") {
      get {
        complete(User(Some(1), "dark", "vador"))
      } ~
        post {
          entity(as[UserCreateRequest]) { request ⇒
            complete(User(Some(1), request.firstname, request.lastname))
          }
        }
    }
  }

  Http().bindAndHandle(routes, interface = "127.0.0.1", port = 8080)

}

Get example :

curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X GET http://127.0.0.1:8080/users

HTTP/1.1 200 OK
Server: akka-http/2.3.10
Date: Tue, 05 May 2015 10:02:34 GMT
Content-Type: application/json
Content-Length: 46

{"id":1,"firstname":"dark","lastname":"vador"}%

Post example

curl -i -H "Accept: application/json" -H "Content-Type: application/json" --data "{\"firstname\":\"luck\", \"lastname\":\"skywalker\"}" http://127.0.0.1:8080/users

HTTP/1.1 200 OK
Server: akka-http/2.3.10
Date: Tue, 05 May 2015 10:06:11 GMT
Content-Type: application/json
Content-Length: 50

{"id":1,"firstname":"luck","lastname":"skywalker"}%