[openstack-dev] [Mistral] Workflow on-finish

Renat Akhmerov rakhmerov at mirantis.com
Thu Aug 28 05:02:53 UTC 2014


Right now, you can just include a special task into a workflow that, for example, sends an HTTP request to whatever you need to notify about workflow completion. Although, I see it rather as a hack (not so horrible though).

Renat Akhmerov
@ Mirantis Inc.



On 28 Aug 2014, at 12:01, Renat Akhmerov <rakhmerov at mirantis.com> wrote:

> There are two blueprints that I supposed to use for this purpose:
> https://blueprints.launchpad.net/mistral/+spec/mistral-event-listeners-http
> https://blueprints.launchpad.net/mistral/+spec/mistral-event-listeners-amqp
> 
> So my opinion:
> This functionality should be orthogonal to what we configure in DSL.
> The mechanism of listeners would is more generic and would your requirement as a special case.
> At this point, I see that we may want to implement a generic transport-agnostic listener mechanism internally (not that hard task) and then implement required transport specific plugins to it.
> 
> Inviting everyone to discussion.
> 
> Thanks
> 
> Renat Akhmerov
> @ Mirantis Inc.
> 
> 
> 
> On 28 Aug 2014, at 06:17, W Chan <m4d.coder at gmail.com> wrote:
> 
>> Renat,
>> 
>> It will be helpful to perform a callback on completion of the async workflow.  Can we add on-finish to the workflow spec and when workflow completes, runs task(s) defined in the on-finish section of the spec?  This will allow the workflow author to define how the callback is to be done.
>> 
>> Here's the bp link. https://blueprints.launchpad.net/mistral/+spec/mistral-workflow-on-finish
>> 
>> Thanks.
>> Winson
>> 
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> 

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