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require 'puppet/property'
# This property will get automatically added to any type that responds
# to the methods 'exists?', 'create', and 'destroy'.
class Puppet::Property::Ensure < Puppet::Property
@name = :ensure
def self.defaultvalues
newvalue(:present) do
if @resource.provider and @resource.provider.respond_to?(:create)
@resource.provider.create
else
@resource.create
end
nil # return nil so the event is autogenerated
end
newvalue(:absent) do
if @resource.provider and @resource.provider.respond_to?(:destroy)
@resource.provider.destroy
else
@resource.destroy
end
nil # return nil so the event is autogenerated
end
defaultto do
if @resource.managed?
:present
else
nil
end
end
# This doc will probably get overridden
@doc ||= "The basic property that the resource should be in."
end
def self.inherited(sub)
# Add in the two properties that everyone will have.
sub.class_eval do
end
end
def change_to_s(currentvalue, newvalue)
begin
if currentvalue == :absent or currentvalue.nil?
return "created"
elsif newvalue == :absent
return "removed"
else
return "%s changed '%s' to '%s'" %
[self.name, self.is_to_s(currentvalue), self.should_to_s(newvalue)]
end
rescue Puppet::Error, Puppet::DevError
raise
rescue => detail
raise Puppet::DevError, "Could not convert change %s to string: %s" %
[self.name, detail]
end
end
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.
if prov = @resource.provider and prov.respond_to?(:exists?)
result = prov.exists?
elsif @resource.respond_to?(:exists?)
result = @resource.exists?
else
raise Puppet::DevError, "No ability to determine if %s exists" %
@resource.class.name
end
if result
return :present
else
return :absent
end
end
# If they're talking about the thing at all, they generally want to
# say it should exist.
#defaultto :present
defaultto do
if @resource.managed?
:present
else
nil
end
end
end
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