On 30 March 2017 at 14:28:34, Mo Batista ([email protected]) wrote: I'm new to Akka-Http please bear with me.
Hello Mo and welcome to Akka :- What I'm trying to do is 1. Connect to a Restful service 2. Unmarshall the json payload into the following case class structure It's as simple as these docs really: http://doc.akka.io/docs/akka-http/10.0.5/scala/http/common/unmarshalling.html#using-unmarshallers So you just need: implicit val colorBlobsFormat = jsonFormat1(ColorBlobsResponse) // this already provided all the needed marshallers // implicit materializer in Scope AFAIR too import system.dispatcher Unmarshal(entity).to[ColorBlob] In theory this should be simple, but it turns out that anything on this topic is either outdated or way over my head, as in this article http://malaw.ski/2016/04/10/hakk-the-planet-implementing-akka-http-marshallers/ That's about writing custom unmarshallers which is rather advanced - you don't need to do that. http://doc.akka.io/docs/akka-http/10.0.1/scala/http/common/unmarshalling.html doesn't explain how to actually write an unmarshaller This is where I got so far: Issuing the request val request = HttpRequest(method = HttpMethods.GET, uri = s"https://colorblobs.service.net/ws/colorblobs/en?productCodes=904655";) val future = Http().singleRequest(request) val result: ColorBlobsResponse = Await.result(future.flatMap(Unmarshal(_).to[ColorBlobsResponse]), Duration.Inf) Small note here, I would strongly recommend never using Duration.Inf, even in sample code as you might get used to it and in general it simply is a very bad idea to block infinitely. Put `import scala.concurrent.duration._` and `2.seconds` instead for example. Providing the unmarshaller. This is also where I got stuck You don't need to do any of the manual Unmarshaller building, it's all ready once you did the jsonFormat call :) Now that I have ResponseEntity what would be the next step? No need to go so "manual" :-) Check the docs above. Maybe there is a blog article explaining what jsonFormat1, DefaultJsonProtocol and FromResponseUnmarshaller actually do? Again, the docs: *http://doc.akka.io/docs/akka-http/10.0.5/scala/http/common/json-support.html#json-support <http://doc.akka.io/docs/akka-http/10.0.5/scala/http/common/json-support.html#json-support> * http://doc.akka.io/docs/akka-http/10.0.5/scala/http/common/marshalling.html#http-marshalling-scala http://doc.akka.io/docs/akka-http/10.0.5/scala/http/common/unmarshalling.html#http-unmarshalling-scala I'm using akka-http 10.0.5 btw. Thanks for providing that info, people often forget to and it helps a lot to know that you're on the latest :) Hope this helps, -- Konrad `ktoso` Malawski Akka <http://akka.io> @ Lightbend <http://lightbend.com> -- >>>>>>>>>> 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
