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Nathan Nobbe

2013-Oct-30 22:58 UTC

[Puppet Users] Pass aggregate hash to class to declare several defined types

Hi,

A bit of background, I''m trying to move from node inheritance to hiera.
With node inheritance I could declare defined types at several levels, for 
example, say for all of preproduction I''d like a yum repository

*manifests/pre-prod.pp*
class preprod {
  yumrepo { ''preprod-repo'': ... }
}

Then add other repos in various sub classes where other specialized 
yumrepo(s) are declared
*manifests/qa.pp*
class qa inherits preprod {
  yumrepo { ''qa'': ... }
}

*manifests/dev.pp*
class dev inherits preprod {
  yumrepo {''dev'': ... }
}

I''m having a hard time getting this to map to hiera cleanly.
I''d like to
have the data in the hierarchy something like this

*preprod.yaml*
yumrepo::name: preprod-repo
...

*qa.yaml*
yumrepo::name: qa-repo
...

My initial thought was to use hiera_include(''classes''), but
that doesn''t
work for defined types. What folks on superuser.com have
suggested<http://serverfault.com/questions/549720/hiera-include-equivalent-for-resource-types/549727?noredirect=1#549727>is
to define a wrapper class for *each* declaration of a defined type.
Something like

class preprod_repo {
  yumrepo { ''preprod-repo'': ... }
}

class qa_repo {
  yumrepo { ''qa-repo'': ... }
}

Then in the yaml

*preprod.yaml*
classes:
 - preprod_repo
...

*qa.yaml*
classes:
 - qa_repo
...

I really don''t want to define a class for every single type
instantiation.
What I''d prefer would be a single class that could capture a merged
hash
from all the yaml files and write out all the type declarations, but
I''m
having trouble with the implementation. From the yaml side, I''ve got
what I
want, something like this

*preprod.yaml*
classes:
 - yumrepo_hiera

yumrepo_hiera: {
  ''preprod_repo'' : {
     # attributes for preprod yum repo
  }
}

*qa.yaml*
classes:
 - yumrepo_hiera

yumrepo_hiera: {
  ''qa_repo'' : {
     # attributes for qa yum repo
  }
}

Now I''m passing an aggregate data object with all the data needed to
the
yumrepo_hieara class. Problem is how to write out all those type 
declarations. Since there''s no looping in RDL. I know it''s
deprecated, but
the Ruby DSL seems to be my best bet, yet I can''t get the hash from
hiera
passed in.., I''m getting this error when I run the agent

undefined method `merge'' for :yumrepo_hiera:Symbol

Here''s what I''ve got so far, bear in mind I know nothing of
Ruby, but
hopefully you can get the idea

hostclass :yumrepo_hiera, :yumrepo_hiera do
   @yumrepo_hiera.each do |name, repo|
        yumrepo( :name,
                 repo[:descr],
                 # other parameters to yumrepo type...
         )       
   end
end

Can someone help me get off the ground with this Ruby DSL, or show me a 
better way in general, one where I don''t have to write a class per each
node declaration?

thanks,

-nathan

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Nathan Nobbe

2013-Oct-31 05:17 UTC

head link

[Puppet Users] Re: Pass aggregate hash to class to declare several defined types

Solved it with create_resources.

On Wednesday, October 30, 2013 4:58:44 PM UTC-6, Nathan Nobbe
wrote:>
> Hi,
>
> A bit of background, I''m trying to move from node inheritance to
hiera.
> With node inheritance I could declare defined types at several levels, for 
> example, say for all of preproduction I''d like a yum repository
>
> *manifests/pre-prod.pp*
> class preprod {
>   yumrepo { ''preprod-repo'': ... }
> }
>
> Then add other repos in various sub classes where other specialized 
> yumrepo(s) are declared
> *manifests/qa.pp*
> class qa inherits preprod {
>   yumrepo { ''qa'': ... }
> }
>
> *manifests/dev.pp*
> class dev inherits preprod {
>   yumrepo {''dev'': ... }
> }
>
> I''m having a hard time getting this to map to hiera cleanly.
I''d like to
> have the data in the hierarchy something like this
>
> *preprod.yaml*
> yumrepo::name: preprod-repo
> ...
>
> *qa.yaml*
> yumrepo::name: qa-repo
> ...
>
> My initial thought was to use hiera_include(''classes''),
but that doesn''t
> work for defined types. What folks on superuser.com have
suggested<http://serverfault.com/questions/549720/hiera-include-equivalent-for-resource-types/549727?noredirect=1#549727>is
to define a wrapper class for *each* declaration of a defined type.
> Something like
>
> class preprod_repo {
>   yumrepo { ''preprod-repo'': ... }
> }
>
> class qa_repo {
>   yumrepo { ''qa-repo'': ... }
> }
>
> Then in the yaml
>
> *preprod.yaml*
> classes:
>  - preprod_repo
> ...
>
> *qa.yaml*
> classes:
>  - qa_repo
> ...
>
> I really don''t want to define a class for every single type
instantiation.
> What I''d prefer would be a single class that could capture a
merged hash
> from all the yaml files and write out all the type declarations, but
I''m
> having trouble with the implementation. From the yaml side, I''ve
got what I
> want, something like this
>
> *preprod.yaml*
> classes:
>  - yumrepo_hiera
>
> yumrepo_hiera: {
>   ''preprod_repo'' : {
>      # attributes for preprod yum repo
>   }
> }
>
> *qa.yaml*
> classes:
>  - yumrepo_hiera
>
> yumrepo_hiera: {
>   ''qa_repo'' : {
>      # attributes for qa yum repo
>   }
> }
>
> Now I''m passing an aggregate data object with all the data needed
to the
> yumrepo_hieara class. Problem is how to write out all those type 
> declarations. Since there''s no looping in RDL. I know
it''s deprecated, but
> the Ruby DSL seems to be my best bet, yet I can''t get the hash
from hiera
> passed in.., I''m getting this error when I run the agent
>
> undefined method `merge'' for :yumrepo_hiera:Symbol
>
> Here''s what I''ve got so far, bear in mind I know nothing
of Ruby, but
> hopefully you can get the idea
>
> hostclass :yumrepo_hiera, :yumrepo_hiera do
>    @yumrepo_hiera.each do |name, repo|
>         yumrepo( :name,
>                  repo[:descr],
>                  # other parameters to yumrepo type...
>          )       
>    end
> end
>
> Can someone help me get off the ground with this Ruby DSL, or show me a 
> better way in general, one where I don''t have to write a class per
each
> node declaration?
>
> thanks,
>
> -nathan
>
>
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Puppet users - Oct 2013 - Pass aggregate hash to class to declare several defined types

[Puppet Users] Pass aggregate hash to class to declare several defined types

[Puppet Users] Re: Pass aggregate hash to class to declare several defined types