this sounds like a good candidate for a saga. here is one idea.
paymentsaga
: Isagastate<paymentstate>
: initializedby<submitpayment>
: orchstrates<submitpaymentagain>
{
public guid id {get;set;}
public paymentstate state {get;set;}
public bool iscopmlete {get;set;}
public void consume(submitpayment message)
{
var provider = paymentproviderfactory.create(message.paymenttype);
if(provider.chargepayment(message...) == false)
{
state. failattempts = 1;
var paymenttype = provider.getnextpaymentmethod(message...);
bus.delaysend(datetime.now.addhours(4), new
submitpaymentagain{paymenttype});
return;
}
bus.send(new paymentprocessed());
iscomplete = true;
}
public void consume(submitpaymentagain message)
{
var provider = paymentproviderfactory.create(message.paymenttype);
if(provider.chargepayment(message...) == false)
{
if(state.failattempts == 3)
{
bus.send(new paymentnoprocessed{...});
iscopmlete = true;
return;
}
state. failattempts ++;
var paymenttype = provider.getnextpaymentmethod(message...);
bus.delaysend(datetime.now.addhours(4), new
submitpaymentagain{paymenttype});
}
}
}
On Friday, March 23, 2012 5:10:00 AM UTC-4, Erik Juhlin wrote:
>
> I'm new to service buses, but we have a problem that we think a
> service bus might solve.
>
> When communicating with an external service, we want to try X number
> of times before putting it in an error queue or perhaps doing
> something else (e.g. switch from credit card provider to invoice
> provider).
>
> But we don't want to do these calls directly after eachother. We want
> to wait a certain time to give the external provider a chance to wake
> up after a crash.
>
> It seems like the Rhino Service Bus can do the first part, but is
> there a way to wait between retries? Or is a service bus not suitable
> for this?
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