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Access to define resource variables?

asked 2015-12-06 15:34:37 -0500

dbschofield gravatar image

I often find that I want/need to reference a variable value declared by a define. For example the value of $home in the below snippet.

define example(
  $install_dir,
){
  $home = "${install_dir}/some/path/${title}"
}

example{'one':}
example{'two':}

In the code I typically already know the title and type of a resource for which I want to know the $home value. What I would really like to do is reference the resource $home value using the type and title similar to what is done with resource dependencies. Something like:

$Example['one']::home

Of course puppet errors with the above syntax. But it brings me to my question... Is there a way to reference resource variable values of instantiated defines?

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answered 2015-12-07 10:18:55 -0500

hope I'm not misunderstanding whgat you're asking - if I am just shout!

have a look at puppetlabs stdlib module (can install using puppet module install puppetlabs-stdlib)

then use the function getparam (getparam/stdlib)

simple example would be from the documentation:

    define example_resource($param) {
}
 example_resource { "example_resource_instance":
  param => "param_value"
}
 getparam(Example_resource["example_resource_instance"], "param")

Cheers Stuart

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Comments

I always avoided dependencies on other modules. This may be the one exception. Thanks.

dbschofield gravatar imagedbschofield ( 2015-12-14 13:51:36 -0500 )edit
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answered 2016-08-15 16:38:10 -0500

The future parser allows the following.

$x = Example_resource['example_resource_instance']['param']

latest puppet docs on „resource references“  § „accessing attribute values“

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Asked: 2015-12-06 15:34:37 -0500

Seen: 244 times

Last updated: Aug 15 '16