Hi Patrik, In own solution, which we use currently, we requeue the message in rabbitmq, so that it will be reappear again in a stream. Each message has deliveryTag (identifier) by which we can do
"channel.nack(deliveryTag)" in case of failure Ideally, for my case it would be useful if: 1. I can specify settings on flow to do not close in terms of failure 2. the Throwable with message from stream be propagated to Publisher, calling onError 3. having reference to original message coming to the Flow (or have keyed stream, where each message has unique id) Sorry, I don't know akka-stream API well yet, So still quite unsure if my use-case naturally fit it. Thanks Viktor On Monday, August 11, 2014 10:51:27 AM UTC+1, Patrik Nordwall wrote: > > Hi Viktor, > > On Sat, Aug 9, 2014 at 6:53 PM, Viktor Taranenko <vikt...@gmail.com > <javascript:>> wrote: > >> Hi guys, >> >> I've just started investigating akka stream module. >> >> My use case is wrapping RabbitMQ worker queue with akka-stream (0.4). And >> there might be many steps which required IO in a Flow. Potentially I could >> put all of them into one function (with solution above) but will miss >> stream "reactivity" then. >> >> Just wondering if there is any future plans to attach global error >> handler for stream to override default behaviour? >> > > We are discussing that right now, and it would be useful input if you > described your use case and how it is supposed to handle failures in some > more detail. > > /Patrik > > >> >> Thanks, >> Viktor >> >> On Friday, July 18, 2014 9:52:43 AM UTC+1, √ wrote: >> >>> Yes, assuming that we're talking about downstream retries :) >>> On Jul 18, 2014 10:43 AM, "Endre Varga" <endre...@typesafe.com> wrote: >>> >>>> Yes, mapFuture is the other option if the result set is small. >>>> >>>> >>>> On Fri, Jul 18, 2014 at 10:40 AM, √iktor Ҡlang <viktor...@gmail.com> >>>> wrote: >>>> >>>>> mapFuture ought to work for that use case. >>>>> On Jul 17, 2014 8:43 AM, "Alexey Romanchuk" <alexey.r...@gmail.com> >>>>> wrote: >>>>> >>>>>> Hey hakkers! >>>>>> >>>>>> I have a transformer step which perform some IO operations. Sure IO >>>>>> can fails and currently I have no way to perform non blocking retry of >>>>>> failed message. >>>>>> >>>>>> What about introduction new flow/duct combinator which allows to >>>>>> automatically perform n retries with some delay in case of >>>>>> transformation >>>>>> failure? >>>>>> >>>>>> Thanks! >>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>>>>>> 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. >>>>>> To post to this group, send email to akka...@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+...@googlegroups.com. >>>>> To post to this group, send email to akka...@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+...@googlegroups.com. >>>> To post to this group, send email to akka...@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+...@googlegroups.com <javascript:>. >> To post to this group, send email to akka...@googlegroups.com >> <javascript:>. >> Visit this group at http://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > > Patrik Nordwall > Typesafe <http://typesafe.com/> - Reactive apps on the JVM > Twitter: @patriknw > > -- >>>>>>>>>> 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.
