Cookies.scala

package example

import akka.actor.{ Actor, ActorLogging }
import akka.http.scaladsl.Http
import akka.http.scaladsl.model._
import akka.http.scaladsl.model.headers._
import akka.stream.{ ActorMaterializer, ActorMaterializerSettings }
import akka.util.ByteString

class Cookies extends Actor with ActorLogging {

  import context.dispatcher
  import akka.pattern.pipe

  final implicit val materializer: ActorMaterializer = ActorMaterializer(ActorMaterializerSettings(context.system))

  val http = Http(context.system)

  override def preStart() = {
    http.singleRequest(HttpRequest(uri = "http://google.com"))
      .pipeTo(self)
  }

  def receive = {
    case resp @ HttpResponse(StatusCodes.Found, _, _, _) =>
      resp.header[`Location`].foreach { location =>
        http.singleRequest(HttpRequest(uri = location.uri))
          .pipeTo(self)
      }

    case resp: HttpResponse =>
      val cookies: Seq[HttpCookie] = resp.headers.collect {
        case c: `Set-Cookie` =>
          c.cookie
      }

      log.info("Got cookies: {}", cookies.mkString("\n"))

      http.shutdownAllConnectionPools().andThen {
        case _ =>
          context.system.terminate()
      }
  }
}