It is hard to explain, but in short my master actor receives a message
which is then forwarded to the respective worker, and from that message I
extract business information to make my worker's (FSM) persistenceId
unique.
After I second thought, maybe I misunderstood the router concept - I just
realized that this code load balances the work between the actors, but you
are right, I need to find a way how to distribute it equally among the
nodes which I suppose is done by the cluster sharding.
On Wednesday, March 15, 2017 at 7:19:07 AM UTC+1, Patrik Nordwall wrote:
>
> What persistenceIds would you like to use in the end?
>
> Based on a counter? PO-1, PO-2, ... increasing for each routee?
> Would be strange in a long running system when worker nodes are added and
> removed over time.
>
> Why not use Cluster Sharding instead? Wouldn't it be more natural to have
> a separate entity actor for each purchase order instead of using
> round-robin.
>
> /Patrik
> tis 14 mars 2017 kl. 09:26 skrev <mladen....@gmail.com <javascript:>>:
>
>> To explain my issue in a clear way I provided a sample code:
>>
>> if I have an actor which looks like this:
>>
>> class MasterActor extends Actor with ActorLogging with WorkerRouter with
>> AkkaProvider {
>>
>> private val router = createWorkerRouter()
>>
>>
>> def receive = {
>> case PurchaseOrderMsg(content,timestamp) =>
>> router ! Response(timestamp)
>>
>>
>> trait WorkerRouter {this: Actor =>
>> def createWorkerRouter(): ActorRef = {
>> val resizer = DefaultResizer(lowerBound = 2, upperBound = 15)
>> context.actorOf(
>> ClusterRouterPool(RoundRobinPool(7,Some(resizer)),
>> ClusterRouterPoolSettings(
>> totalInstances = Int.MaxValue,
>> maxInstancesPerNode = 10,
>> allowLocalRoutees = false,
>> useRole = Some("worker"))
>> ).props(Worker.props(???),
>> name = "purchase-order-router")
>> }
>> }
>>
>>
>>
>>
>>
>> How do I pass dynamically props to createWorkerRouter from my MasterActor?
>>
>> I use the props from the Worker as persistence_id since it's a FSM therefore
>> it has to be unique.
>>
>> --
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--
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