Does it behave differently from `Source.single(somePromise.future).mapAsync(1)(identity)` ?
On Wed, Oct 25, 2017 at 12:01 PM, Christopher Hunt <[email protected]> wrote: > Hey community, > > I've got a situation where there's a promise that, when completed, I'd > like to concat its value onto the *end* of any stream elements before it > i.e.: > > someSource.concat(Source.fromFuture(somePromise.future)) > > What I'm noticing is that if the promise is completed then the promised > value doesn't wait for someSource to complete. Rather, it yields an element > near to the time that the promise was completed, seemingly ignoring any > further elements from someSource. > > This problem appears to be similar to https://github.com/akka/ > akka/issues/22042, where flatMapConcat is recommended. However, I'm not > sure that flatMapConcat as its contract appears to be different - I only > want to concat elements when someSource is complete. flatMapConcat appears > to get called for each element from someSource. > > Any further pointers in order to achieve the API description of concat in > conjunction with Source.fromFuture? > > Cheers, > -C > > -- > >>>>>>>>>> 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. > -- Cheers, √ -- >>>>>>>>>> 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.
