Viktor,
Thanks for the reply. It makes sense and it will simulate Cancel message.
Do you have suggestion on how to do this when the message queue have more
than 1 messages? In my case, the message queue can have multiple processing
messages, so the Cancel message could be at the end of the queue still and
I shouldn't process the next message before the original message is
completely processed.
Does this mean that I should change my queue to priority queue that will
give priority to Cancel message?
Thanks,
Suriyanto
On Wednesday, March 5, 2014 2:03:57 AM UTC-8, √ wrote:
>
> A technique I prefer is the following:
>
> case object Continue
> case object Cancel
>
> class Worker extends Actor {
> def receive = {
> case Continue =>
> doSmallChunkOfWork()
> self forward Continue
> case Cancel => context stop self
> }
> }
>
>
> On Wed, Mar 5, 2014 at 1:12 AM, Suriyanto Lee <[email protected]<javascript:>
> > wrote:
>
>> Hello,
>>
>> We have an Akka actor system running where some actors can process a
>> short message (<10 secs) and some actors could take up to 20 minutes. At
>> times, users might decide to cancel the process.
>>
>> We originally implement calling Stop on the actor, but it caused too much
>> lag for user when long message are being processed. Afterwards we modified
>> the actor so that it will perform periodic checks for a cancel flag. The
>> second implementation makes the cancellation to be more responsive, but
>> does not scale well as the number of actors increased.
>>
>> What is the pattern or best practice in Akka for this case? Is there a
>> way to broadcast an interrupt message to actors for cancelation?
>>
>> Thanks,
>> Suriyanto
>>
>> --
>> >>>>>>>>>> Read the docs: http://akka.io/docs/
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>
>
>
> --
> Cheers,
> √
>
> * ——————— **Viktor Klang*
> *Chief Architect - **Typesafe <http://www.typesafe.com/>*
>
> Twitter: @viktorklang
>
--
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ: http://akka.io/faq/
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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