diff options
Diffstat (limited to 'lib/chef/provider.rb')
| -rw-r--r-- | lib/chef/provider.rb | 41 |
1 files changed, 6 insertions, 35 deletions
diff --git a/lib/chef/provider.rb b/lib/chef/provider.rb index 7cb2301772..6971465b0a 100644 --- a/lib/chef/provider.rb +++ b/lib/chef/provider.rb @@ -342,45 +342,16 @@ class Chef extend Forwardable define_singleton_method(:to_s) { "forwarder module for #{provider_class}" } define_singleton_method(:inspect) { to_s } - # Add a delegator for each explicit property that will get the *current* value - # of the property by default instead of the *actual* value. - resource.class.properties.each_key do |name| - class_eval(<<-EOM, __FILE__, __LINE__) - def #{name}(*args, &block) - # If no arguments were passed, we process "get" by defaulting - # the value to current_resource, not new_resource. This helps - # avoid issues where resources accidentally overwrite perfectly - # valid stuff with default values. - # - # This magic is to make this kind of thing easy: - # - # FileUtils.chown new_resource.mode.nil? ? current_resource.mode : new_resource.mode, new_resource.path - # - # We do this in the file provider where we need to construct a new filesystem object and - # when the new_resource is nil/default that means "preserve the current stuff" and does not - # mean to ignore it which will wind up defaulting to changing the file to have a "root" - # ownership if anything else changes. Its kind of overly clever and magical, and most likely - # gets the use case wrong where someone has a property that they really mean to default to - # some value which /should/ get set if its left as the default and where the default is - # meant to be declarative. Instead of property_is_set? we should most likely be using - # nil? but we're going to deprecate all of it anyway. Just type out what you really mean longhand. - # - if args.empty? && !block - if !new_resource.property_is_set?(__method__) && current_resource - Chef.deprecated(:namespace_collisions, "rename #{name} to current_resource.#{name}") - return current_resource.public_send(__method__) - end - end - Chef.deprecated(:namespace_collisions, "rename #{name} to new_resource.#{name}") - new_resource.public_send(__method__, *args, &block) - end - EOM - end + # this magic, stated simply, is that any instance method declared directly on + # the resource we are building, will be accessible from the action_class(provider) + # instance. methods declared on Chef::Resource and properties are not inherited. dsl_methods = resource.class.public_instance_methods + resource.class.protected_instance_methods - provider_class.instance_methods - - resource.class.properties.keys + resource.class.properties.keys - + resource.class.properties.keys.map { |k| "#{k}=".to_sym } - + Chef::Resource.instance_methods def_delegators(:new_resource, *dsl_methods) end include @included_resource_dsl_module |