Method: Puppet::Property::Ensure#retrieve

Defined in:
lib/puppet/property/ensure.rb

#retrieve ⇒ Symbol

Retrieves the is value for the ensure property. The existence of the resource is checked by first consulting the provider (if it responds to ‘:exists`), and secondly the resource. A a value of `:present` or `:absent` is returned depending on if the managed entity exists or not.

Raises:

  • (Puppet::DevError) —

    if neither the provider nor the resource responds to ‘:exists`



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# File 'lib/puppet/property/ensure.rb', line 74

def retrieve
  # XXX This is a problem -- whether the object exists or not often
  # depends on the results of other properties, yet we're the first property
  # to get checked, which means that those other properties do not have
  # @is values set.  This seems to be the source of quite a few bugs,
  # although they're mostly logging bugs, not functional ones.
  prov = @resource.provider
  if prov && prov.respond_to?(:exists?)
    result = prov.exists?
  elsif @resource.respond_to?(:exists?)
    result = @resource.exists?
  else
    raise Puppet::DevError, _("No ability to determine if %{name} exists") % { name: @resource.class.name }
  end
  if result
    return :present
  else
    return :absent
  end
end