Thanks Greg, this is exactly what I was trying to figure out. On Dec 30, 2015 6:36 PM, "Greg Young" <[email protected]> wrote:
> The manual ack as received from a message is a common pattern. Normally > you would want an actor that represents the subscription, you can then pass > forward the address of this actor so other actors can respond back when > completed. However if this process gets to be more than a few actors you > are likely better off to have an actor that represents the process as a > whole and the interactions that occur who is then responsible for the > ack/nak at the end. > > On Wednesday, December 30, 2015 at 11:35:33 AM UTC, Vagif Abilov wrote: >> >> Hello, >> >> We want to use Akka to implement a scenario when messages are fetched >> from a message queue (RabbitMQ) and then processed by a chain of actors. >> The queue is durable and messages must not be lost. So we need to send an >> acknowledgement (BasicAck in RabbitMQ) back to the queue in order to >> finalize the dequeued message. Because of that the very last actor in the >> processing chain needs to do the acknowledgement. This seems to be rather >> common need, and I wonder if there is a known pattern for this. Vaughn >> Vernon in his book writes about using Return Address for such purpose so >> all messages sent along the chain will have the return address (of the MQ >> channel actor) and the correlation identifier that specifies the queue >> message tag. Is this the proper way to do it? >> >> An alternative is to ack the message right after the receival and then >> use persistent actors to provide its guaranteed delivery, but I was adviced >> against such approach because use of AMPQ eliminates the need for actor >> persistance for this particular scenario. >> >> Thanks in advance >> >> Vagif >> > -- > >>>>>>>>>> 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/0ILTqdCvMxo/unsubscribe. > To unsubscribe from this group and all its topics, 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. > -- >>>>>>>>>> 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.
