Puppet users - Nov 2013 - validate hiera database against a schema

is there a way to validate a hiera database against a schema?
the validation could be done as a whole (but that might not make sense, as 
the effective hierarchy depends on the context), 
or better, when calling hiera(''myvar'') from puppet (for
instance).

or maybe, this could be a new function (in puppet-stdlibs)
*validate_against_schema($myvar,
$schema).*

does this feature make sense?
is it planned?


Regards,
David

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On Friday, November 29, 2013 2:58:19 AM UTC-6, David Portabella
wrote:
>
> is there a way to validate a hiera database against a schema?
>

Not that I know of, no.  Did you have a particular schema language in mind?

 
> the validation could be done as a whole (but that might not make sense, as 
> the effective hierarchy depends on the context), 
> or better, when calling hiera(''myvar'') from puppet (for
instance).
>
>
Then it sounds like you are asking more about validating individual data 
items.  Puppet still doesn''t have general-purpose schema validation for
such things, but you can write context-specific validation in DSL or as one 
or more custom functions.

 
> or maybe, this could be a new function (in puppet-stdlibs)
*validate_against_schema($myvar,
> $schema).*
>
> does this feature make sense?
>

Not without a particular schema language attached to it.  And maybe not 
with one.  It is not immediately evident to me that describing the expected 
form of the data in some schema language and then using that to validate 
would be in any way better than writing appropriate validation code in 
either Puppet DSL (for use in a Puppet manifest) or Ruby (for a custom 
function).  You have to write custom code any way you do it, so what is the 
advantage of adding another language to the mix?

 
> is it planned?
>
>
I suspect not.


John

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On Mon, Dec 2, 2013 at 9:44 AM, jcbollinger
<John.Bollinger@stjude.org>wrote:
>
>
> On Friday, November 29, 2013 2:58:19 AM UTC-6, David Portabella wrote:
>>
>> is there a way to validate a hiera database against a schema?
>>
>
>
> Not that I know of, no.  Did you have a particular schema language in mind?
>
Ken Barber done some work a while back with Kwalify, which could be
suitable for this purpose:

https://github.com/puppetlabs/puppetlabs-kwalify

Nan

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