Re: [Openflow-dev] Timeouts

[Paolo B. <p.b...@ic...>]

Hi Adrian,

basically, you have to model the timeout as a separate activity.

Suppose you want to build a timeout on the activity A. Your workflow is 
something like:

S -> A -> E.

You have to:

-  add an "and" split among S and A;

- add two activities, T1 and T2, on the other branch of the and split;

- add a "xor" and among A, T2 and E.

- add an activity T3.

The resulting flow is the following:

       S  
      and
    A     T1
           T2
       xor
       T3
       E

T1 is an application activity, that adds an entry in the cron daemon, with the 
required timeout. 

T2 is a manual activity, which is invoked using something like the ZClient by 
the Cron, on the end of the timeout.

T3 is the activity that, if the timeout has not expired, provide to remove the 
entry from the Cron.

This is not the possibly best solution, as OpenFlow currently lacks a good 
support for time-driven event (here is another item for our todo list).

Best regards.

Paolo

On Wednesday 29 January 2003 04:09, Adrian van den Dries wrote:
> How do you model timeouts on an activity?
>
> a.

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Paolo Bizzarri - President - Icube S.r.l.
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