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-rw-r--r--lib/chef/provider.rb22
1 files changed, 19 insertions, 3 deletions
diff --git a/lib/chef/provider.rb b/lib/chef/provider.rb
index bdc1114f0d..8334eab0a6 100644
--- a/lib/chef/provider.rb
+++ b/lib/chef/provider.rb
@@ -267,15 +267,15 @@ class Chef
# @param include_resource_dsl [Boolean] Whether to include resource DSL or
# not (defaults to `false`).
#
- def self.include_resource_dsl(include_resource_dsl)
- @include_resource_dsl = include_resource_dsl
+ def self.include_resource_dsl?
+ false
end
# Create the resource DSL module that forwards resource methods to new_resource
#
# @api private
def self.include_resource_dsl_module(resource)
- if @include_resource_dsl && !defined?(@included_resource_dsl_module)
+ if include_resource_dsl? && !defined?(@included_resource_dsl_module)
provider_class = self
@included_resource_dsl_module = Module.new do
extend Forwardable
@@ -286,10 +286,26 @@ class Chef
resource.class.properties.each do |name, property|
class_eval(<<-EOM, __FILE__, __LINE__)
def #{name}(*args, &block)
+ # FIXME: DEPRECATE THIS IN CHEF 13.1
+ #
# 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
return current_resource.public_send(__method__)