Play Action composition

application.scala

package controllers

import scala.concurrent.Future

import play.api._
import play.api.mvc._

object Application extends Controller {

  def index = Action {
    Ok(views.html.index("Your new application is ready."))
  }

  def myAuthAction = Auth(Action.async(parse.json) { request =>
    Future.successful(Ok(request.body))
  })

  def sync = Auth(Action {  request =>
    Ok("toto")
  })

}

case class Auth[A](action: Action[A]) extends Action[A] {

  def apply(request: Request[A]): Future[SimpleResult] = {
    val token = request.headers.get("Auth")
    val body = request.body.toString
    println("body:" + body)

    // validate the token
    if (true) {
      action(request)
    } else {
      Future.successful(Results.Forbidden)
    }
  }

  lazy val parser = action.parser
}

Problems: if I call sync with body “test”, I see “body:AnyContentAsFormUrlEncoded(Map())” in the logs (because it tries to parse “test” as a form fields then return the form data).

The body used for the check is not the real one (a big string), it is the parsed one :-(

Converting the JSON body into string is easy, but a form… (changing a single character would make the signature invalid)