[openstack-dev] [Heat] re: discussion about passing metadata into provider stacks as parameters

Liang Chen cbjchen at linux.vnet.ibm.com
Fri Jun 21 06:56:12 UTC 2013


On Fri, 2013-06-21 at 15:49 +1000, Angus Salkeld wrote:
> On 20/06/13 22:19 -0400, cbjchen at linux.vnet.ibm.com wrote:
> >
> >So anyway, let's get back to the topic this thread was discussing 
> >about - "passing meta data into provider stacks".
> >
> >It seems that we have all reached an agreement that deletepolicy and 
> >updatepolicy will be passed as params, and metadata will be exposed 
> >to provider templates through a function
> >
> >In terms of implemetation,
> >
> >MetaData:
> >
> >- add a resolve method to template.py to handle  
> >{'Fn::ProvidedResource': 'Metadata'}
> 
> I think the name needs a little thought, how about:
> 
> {'Fn::ResourceFacade': 'Metadata'}
> 
> -Angus

Yeah, sounds better~

> >
> >DeletePolicy/UpdatePolicy:
> >
> >- add stack_resource.StackResource.compose_policy_params() -> Json 
> >encoded delete and update policies
> >
> >- have create_with_template update params with delete/update policies 
> >composed by compose_policy_params
> >(json-parameters implementation is already in review, hope it will be 
> >available soon)
> >
> >
> >I will start the implementation if there is no objection.
> >
> >
> >Liang
> >
> 
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