Puppet users - Oct 2012 - serialized call for defines by naming them with array (ordering for the output )

Hi.. I have following issue:
If calling a define with an array as names, then it applyes defines in 
parallel way (which is logical by puppet structure)

example:

# define a function
define func(){
   exec{"/bin/echo $name >> /tmp/file"}
}

#  call it
func{["a","b","c","d"]: }

then my file would have an ordering like:
# cat /tmp/file
b
a
d
c

but how to do this in a serialized way? so, that, at the end, my file has 
an ordering structure exactly as an array, so:
a
b
c
d

any idea?
Its realy usefull for config files where the ordering of parameter does 
matter.

Regards
Dimitri

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On Friday, October 26, 2012 5:26:43 AM UTC-5, Dmitry Nilsen
wrote:
>
> Hi.. I have following issue:
> If calling a define with an array as names, then it applyes defines in 
> parallel way (which is logical by puppet structure)
>
> example:
>
> # define a function
> define func(){
>    exec{"/bin/echo $name >> /tmp/file"}
> }
>
> #  call it
> func{["a","b","c","d"]: }
>
> then my file would have an ordering like:
> # cat /tmp/file
> b
> a
> d
> c
>
> but how to do this in a serialized way? so, that, at the end, my file has 
> an ordering structure exactly as an array, so:
> a
> b
> c
> d
>
> any idea?
> Its realy usefull for config files where the ordering of parameter does 
> matter.
>
>
Relative ordering of resources is achieved by declaring resource 
relationships.  You can do that via the ''require'' and
''before'' resource
metaparameters, or via the resource chaining operators, but there is no 
mechanism for creating relationships based on the order of array elements.

You might be able to write a custom function that did that -- for instance, 
a create_relationships() function in the same spirit as the 
create_resources() built-in.  Alternatively, you could surely do what you 
want by switching (that class) to Ruby DSL instead of Puppet DSL.  I
can''t
think of any other general-purpose approaches, but there might be 
additional alternatives for your particular problem.


John

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