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

Angus Salkeld asalkeld at redhat.com
Fri Jun 21 05:49:52 UTC 2013


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
>
>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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