Of course, but if the channel-internal ACK has already arrived, why should we require another application-level one that might get lost?
Heiko On Mon, May 5, 2014 at 4:25 PM, Martin Krasser <krass...@googlemail.com>wrote: > > On 05.05.14 14:59, Heiko Seeberger wrote: > > On the other hand, an application level ACK is an additional message that > might get lost ... > > > The same is true for the channel-internal ACK. > > > Heiko > > > On Sun, May 4, 2014 at 8:06 PM, Heiko Seeberger <heiko.seeber...@gmail.com > > wrote: > >> Maybe yes. >> >> Heiko >> >> >> On Sun, May 4, 2014 at 12:57 PM, Martin Krasser >> <krass...@googlemail.com>wrote: >> >>> >>> On 04.05.14 11:00, Heiko Seeberger wrote: >>> >>> Not all communication follows the request-response pattern. In my case >>> there's no need for an application level response, its only purpose is the >>> technical ACK. >>> >>> >>> Isn't that a special case of request-response? >>> >>> >>> >>> Heiko >>> >>> >>> On Sun, May 4, 2014 at 10:41 AM, Martin Krasser <krass...@googlemail.com >>> > wrote: >>> >>>> Maybe a confirm(reply: Any) method would make sense, where reply is >>>> sent to the sender of the Persistent message. This would also allow for >>>> some internal optimizations. >>>> >>>> >>>> On 04.05.14 10:18, Martin Krasser wrote: >>>> >>>> >>>> On 04.05.14 10:07, Heiko Seeberger wrote: >>>> >>>> On Sun, May 4, 2014 at 9:55 AM, Martin Krasser <krass...@googlemail.com >>>> > wrote: >>>> >>>>> Hi Heiko, >>>>> >>>>> >>>>> On 03.05.14 06:58, Heiko Seeberger wrote: >>>>> >>>>> Hi, >>>>> >>>>> A short-lived actor A should send a "result" message to some other >>>>> actor B before it terminates itself. As it is important that this message >>>>> gets delivered, I would like to use a channel in order to retry message >>>>> delivery. In case of permanent delivery failure (redeliverMax exceeded) >>>>> the >>>>> short-lived actor A would send the message to some other actor C which >>>>> would know what to do. This can be implemented using a >>>>> redeliverFailureListener. >>>>> >>>>> My question is: How can the short-lived actor A know that the >>>>> message has been delivered, i.e. the ConfirmablePersistent message has >>>>> been >>>>> confirmed? AFAIK there's no deliverSuccessListener or such. >>>>> >>>>> >>>>> Actor B should send an application-level reply to actor A. Channels >>>>> preserve sender references. >>>>> >>>> >>>> Well, that's how I have already implemented it without channels. I >>>> was hoping that channels would make that easier ;-) >>>> >>>> >>>> The purpose of a channel is to make delivery of a message from A -> B >>>> more reliable (by implementing a retry-ack protocol where the ack is >>>> generated by the receiver by calling confirm()) and it shouldn't hide an >>>> application-level conversation between actors A and B which also includes >>>> the reply from B to A. You'd also send a reply if A sends a message to B >>>> without using a channel. Hence, when using a channel, B should confirm >>>> delivery *in addition* to sending a reply. >>>> >>>> >>>> Is it possible to add a feature like a deliverSuccessListener in the >>>> future? >>>> >>>> >>>> It's not a big deal to add that but I'm not sure if it's a good idea >>>> from a design perspective. Curious what others think ... >>>> >>>> >>>> Thanks >>>> Heiko >>>> >>>> -- >>>> >>>>>>>>>> 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. >>>> >>>> >>>> -- >>>> Martin Krasser >>>> >>>> blog: http://krasserm.blogspot.com >>>> code: http://github.com/krasserm >>>> twitter: http://twitter.com/mrt1nz >>>> >>>> >>>> -- >>>> Martin Krasser >>>> >>>> blog: http://krasserm.blogspot.com >>>> code: http://github.com/krasserm >>>> twitter: http://twitter.com/mrt1nz >>>> >>>> -- >>>> >>>>>>>>>> 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. >>>> >>> >>> >>> >>> -- >>> >>> Heiko Seeberger >>> Twitter: @hseeberger >>> Blog: blog.heikoseeberger.name >>> -- >>> >>>>>>>>>> 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. >>> >>> >>> -- >>> Martin Krasser >>> >>> blog: http://krasserm.blogspot.com >>> code: http://github.com/krasserm >>> twitter: http://twitter.com/mrt1nz >>> >>> -- >>> >>>>>>>>>> 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. >>> >> >> >> >> -- >> >> Heiko Seeberger >> Twitter: @hseeberger >> Blog: blog.heikoseeberger.name >> > > > > -- > > Heiko Seeberger > Twitter: @hseeberger > Blog: blog.heikoseeberger.name > -- > >>>>>>>>>> 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. > > > -- > Martin Krasser > > blog: http://krasserm.blogspot.com > code: http://github.com/krasserm > twitter: http://twitter.com/mrt1nz > > -- > >>>>>>>>>> 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. > -- Heiko Seeberger Twitter: @hseeberger Blog: blog.heikoseeberger.name -- >>>>>>>>>> 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. 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