So sorry about the double post on this one :(. I had an early send and thought if I deleted it in time maybe it wouldn't send.
Sent from my iPhone > On Nov 14, 2015, at 12:54, Tim Harper <timchar...@gmail.com> wrote: > > Hi, > > TLDR: I'd like to use the materialized value of a stream to decide the > HttpResponse code. > > Presently, I use a ToEntityMarshaller which marshals to: > HttpEntity.Chunked(_, Source[Chunk, Future[Boolean]]) > > The Materialized Future[Boolean] indicates whether the stream was completely > empty which is knowable as soon as an instance of the Source is run. > > Since streams can be transformed multiple ways, and run multiple times, I'd > prefer to have the state which indicates whether the stream is empty come > from a materialized stream. > > So, what I'd like to know, is if it's possible to use the stream materialized > value to inform the response headers / code in a ToResponseMarshallable. As > far as I can tell, from reading the source code of akka-http, it doesn't seem > possible (a layer later in the process materializes the Source[Chunk, Any] > AFTER an HttpResponse (containing the code, headers, and entity) is fully > generated. > > If this is possible, can someone point me to an example? > > By the way, the stream integration for Akka HTTP is really, really amazing! > Great work on it, Akka devs! I'm planning to blog about this and do a little > walk-through tutorial on how to content-negotiated streaming of either JSON > or protocol buffers. > > Thanks! > > Tim > -- > >>>>>>>>>> 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 a topic in the Google > Groups "Akka User List" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/akka-user/HSz9Ld-J-oc/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > akka-user+unsubscr...@googlegroups.com. > To post to this group, send email to akka-user@googlegroups.com. > Visit this group at http://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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
