20e0e07090
As far as i know there's no other puppet-dsl-like way to get parameter of
defined resource, so that's why i implemented getparam function, which takes
resource reference and parameter name and returns parameter value.
Here's another example why this function is really useful:
define config($path, $config_param1, $config_param2) { }
define example_resource($config) {
$path = getparam($config, "path")
notice("Path is $path")
}
define example_resource2($example_resource, $config = getparam($example_resource, "config")) {
$config_param1 = getparam($config, "config_param1")
notice("Config parameter is $config_param1")
}
define example_resource3($example_resource, $config = getparam($example_resource, "config")) {
$config_param2 = getparam($config, "config_param2")
notice("Config parameter is $config_param2")
}
class test_getparam {
config { "config_instance":
path => "/some/config/path",
config_param1 => "someconfigtext1",
config_param2 => "someconfigtext2",
}
example_resource { "example_resource_instance":
config => Config["config_instance"]
}
example_resource2 { "example_resource_instance":
example_resource => Example_resource["example_resource_instance"]
}
example_resource3 { "example_resource_instance":
example_resource => Example_resource2["example_resource_instance"]
}
}
class { "test_getparam": }
33 lines
927 B
Ruby
33 lines
927 B
Ruby
# Test whether a given class or definition is defined
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require 'puppet/parser/functions'
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Puppet::Parser::Functions.newfunction(:getparam,
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:type => :rvalue,
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:doc => <<-'ENDOFDOC'
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Takes a resource reference and name of the parameter and
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returns value of resource's parameter.
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*Examples:*
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define example_resource($param) {
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}
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example_resource { "example_resource_instance":
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param => "param_value"
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}
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getparam(Example_resource["example_resource_instance"], "param")
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Would return: param_value
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ENDOFDOC
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) do |vals|
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reference, param = vals
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raise(ArgumentError, 'Must specify a reference') unless reference
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raise(ArgumentError, 'Must specify name of a parameter') unless param and param.instance_of? String
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if resource = findresource(reference.to_s)
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return resource[param] if resource[param]
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end
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return ''
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end
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