Very nice indeed, thanks for sharing! Regards,
Roland > 20 aug 2015 kl. 21:03 skrev Justin du coeur <[email protected]>: > > For those who are interested: I've just cut release 2.1 of the Requester > library <https://github.com/jducoeur/Requester> -- the Actor-friendly version > of ask(), which allows you to safely compose requests from one Actor to > another in a thread-safe way. > > > Release 2.1 addresses several problems I've encountered while beating on it > hard: > > When you are wrapping a RequestM[T] in a Future[T] (typical in RPC > scenarios), Exceptions now propagate to the Future > <https://github.com/jducoeur/Requester/blob/master/src/test/scala/org/querki/requester/FutureTests.scala#L47-L54> > correctly. > > request / ? now works correctly with ActorSelections; previously, it only > worked with ActorRefs. > > Most important: when you flatMap requests together, they need to chain so > that things can "unwind" when you finally come up with a final result. (This > is necessary for composition to work as expected.) It turns out that the > original design for this worked recursively: it was beautiful, elegant, and > caused a StackOverflow if you flatMapped more than about 1500 levels deep. > (Yes, I'm currently doing stuff in Querki that is flatMapping several > *thousand* roundtrips in some cases. It allows delightfully elegant Akka > code > <https://github.com/jducoeur/Querki/blob/master/querki/scalajvm/app/querki/imexport/ImporterImpl.scala#L190-L205>.) > This is now rewritten to chain flatMap() a bit less elegantly, but in a > tail-recursive way that should be robust in the face of extreme nesting. > > > At this point, I think it's getting seriously ready for prime time. I > encourage folks to play with it, and drop me a note if you have any > thoughts... > > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ <http://akka.io/docs/> > >>>>>>>>>> Check the FAQ: > >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> <http://doc.akka.io/docs/akka/current/additional/faq.html> > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > >>>>>>>>>> <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] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at http://groups.google.com/group/akka-user > <http://groups.google.com/group/akka-user>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. Dr. Roland Kuhn Akka Tech Lead Typesafe <http://typesafe.com/> – Reactive apps on the JVM. twitter: @rolandkuhn <http://twitter.com/#!/rolandkuhn> -- >>>>>>>>>> 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 http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
