What does it mean to spawn a Promise? Can you show me a short example please?
I've already tried using a Future and during the Future, it tries to call request.complete in another actor and it didn't work :( On Tuesday, December 20, 2016 at 12:02:38 PM UTC+2, √ wrote: > > I guess another option would be to spawn your own Promise and pass it in > your messages and complete it where you want? > > -- > Cheers, > √ > > On Dec 20, 2016 10:40 AM, "Konrad Malawski" <konrad....@lightbend.com > <javascript:>> wrote: > >> Either of the two work. Use ask to integrate with the Actor. >> >> The complete has to be in the route - yes. This is a feature we added >> while we reflected on this while moving Spray to become Akka HTTP. >> In Spray people would forget to call complete() and it would still >> compile, now you have to complete in the routes. >> >> -- >> Konrad `ktoso` Malawski >> Akka <http://akka.io> @ Lightbend <http://lightbend.com> >> >> On 20 December 2016 at 10:36:11, Sid Feiner (sidf...@gmail.com >> <javascript:>) wrote: >> >> Hey, I've posted this question also on Stack Overflow but I'll post it >> here as well as I have a bigger chance of getting help :) >> >> I am pretty new to the Akka world and I have to migrate a project from >> Spray to akka-http. >> >> In spray, a route was of type Route = RequestContext ⇒ Unit. >> But in akka-http, it is of type Route = RequestContext ⇒ >> Future[RouteResult]. >> >> So in spray, we would often handle and complete our requests through a >> chain of Actors (outside of the main controller) using only fire-and-forget >> so we didn't have to "ask" and the performance was great. Now, we have to >> use "ask" every time we pass the request to another Actor (correct me if >> I'm wrong) >> >> I've been searching a lot and I found a few options which I'm not sure if >> they fully satisfy me (the need to complete a request in another Actor >> without the need to return it back to the controller). So that's where you >> could help me :) >> >> >> *Option 1: Using onSuccess/onComplete* >> Does using this block my main controller from receiving more requests? >> >> >> *Option 2: Using Futures and using RouteResult.Complete* >> >> I've found the following example at How to complete a request in another >> actor when using akka-http <http://stackoverflow.com/questions/32011503>: >> >> import akka.actor.{ActorSystem, Actor, Props}import akka.pattern.askimport >> akka.stream.ActorMaterializerimport akka.http.scaladsl.Httpimport >> akka.http.scaladsl.server.Directives._import >> akka.http.scaladsl.server.{RequestContext, RouteResult}import >> scala.concurrent.Futureimport akka.http.scaladsl.model.HttpResponseimport >> akka.util.Timeout >> class RequestActor extends Actor { >> >> //business logic - returns empty HttpResponse >> def handleRequestMessage(requestContext : RequestContext) = >> RouteResult.Complete(new HttpResponse()) >> >> override def receive = { >> case reqContext : RequestContext => >> sender ! handleRequestMessage(reqContext) >> }}//end class RequestActor >> object RouteActorTest extends App { >> implicit val as = ActorSystem("RouteActorTest") >> implicit val timeout = new Timeout(1000) >> >> val actorRef = as actorOf Props[RequestActor] >> >> def handleRequest(reqContext : RequestContext) : Future[RouteResult] = >> ask(actorRef,reqContext).mapTo[RouteResult] >> >> val route = path("") { get(handleRequest) } >> >> //rest of application... >> }//end object RouteActorTest >> >> >> But this actually passes the response back every time to the previous >> Actor (the sender) until it reaches the main controller. Another thing >> about this option is that in the code, it says: >> >> /** >> * The result of handling a request. >> * >> * As a user you typically don't create RouteResult instances directly. >> * Instead, use the methods on the [[RequestContext]] to achieve the desired >> effect. >> */ >> >> So I'm not sure if it's a recommended way of doing it. >> >> >> I've tried using requestContext.complete() in another actor but it >> doesn't work (no error thrown, simply doesn't send response) Does anybody >> know what the best way is to implement the previous architecture we had - >> The ability to fire-and-forget the request between Actors and completing it >> any Actor I want? >> >> Thanks a lot! >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to akka-user+...@googlegroups.com <javascript:>. >> To post to this group, send email to akka...@googlegroups.com >> <javascript:>. >> Visit this group at https://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to akka-user+...@googlegroups.com <javascript:>. >> To post to this group, send email to akka...@googlegroups.com >> <javascript:>. >> Visit this group at https://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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