Open Stack

Zane Bitter <zbitter at redhat.com> wrote on 27.11.2013 22:56:16:

> From: Zane Bitter <zbitter at redhat.com>
> To: openstack-dev at lists.openstack.org,
> Date: 27.11.2013 23:00
> Subject: Re: [openstack-dev] [heat][horizon]Heat UI related
> requirements & roadmap
>
> On 27/11/13 19:57, Jay Pipes wrote:
> >
> > Actually, even simpler than that...
> >
> > parameters:
> >    db:
> >     - db_name:
> >       description: blah
> >       help: blah
> >     - db_username:
> >       description: blah
> >       help: blah
> >
> > After all, can't we assume that if the parameter value is a list, then
> > it is a group of parameters?
>
> This resolves to a fairly weird construct:
>
> {
>    "parameters": {
>      "db": [
>        {
>          "db_name": null,
>          "description": "blah",
>          "help": "blah"
>        },
>        {
>          "description": "blah",
>          "db_username": null,
>          "help": "blah"
>        }
>      ]
>    }
> }
>
> so the name is whichever key has a data value of null (what if there's
> more than one?), and obviously it can't collide with any keywords like
> "description" or "help".
>
> Also, this orders parameters within a group (though not parameters that
> are ungrouped) but not the groups themselves.

Agree that this is kind of a strange construct. I would be more in favor of
(1) making parameters a list which bring implicit ordering (so is intuitive
to the user, and (2) adding the grouping as a separate thing.

E.g.

parameters:
  - db_user:
      type: string
      description: DB user name.
  - db_password:
      type: string
      description: DB password.
  - app_user:
      type: string
      description: Application user name.
  - app_password:
      type: string
      description: application password.

parameter_groups:
  - db: [ db_user, db_password ]
    description: Database parameters.
  - app: [ app_user, app_password ]
    description: Application parameters.


>
> cheers,
> Zane.
>
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