On Fri, Jul 15, 2016 at 10:25:39AM +0100, Steven Hardy wrote:
> Hi all,
>
> I'm trying to figure out the cleanest way to do a replacement of values in
> a mapping (json parameter) in a heat template, e.g:
>
> ServiceNetMap:
> type: json
> default:
> IronicApiNetwork: internal_api
> CephPublicNetwork: storage
>
> NetIpMap:
> type: json
> default:
> storage: 192.0.2.2
> internal_api: 192.0.2.5
>
> How do I get
> OutputMap:
> IronicApiNetwork: 192.0.2.5
> CephPublicNetwork: 192.0.2.2
>
> It seems like something yaql should be able to do, but I've so far failed
> to figure out the syntax.
>
> The other (possibly simpler) possibility is to implement a new hot
> function, e.g something like:
>
> map_replace:
> template: {get_param: ServiceNetMap}
> value_replacements: {get_param: NetIpMap}
As a follow-up to this, I have posted this spec and implementation for
map_replace (syntax differs slightly from the keys above):
https://review.openstack.org/#/c/343696/
https://review.openstack.org/#/c/343731/
My aim is a simpler interface to the yaql example previously discussed, and
a better error path when things like key collisions occur. Reviews welcome! :)
Steve
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