class Chef::Node::VividMash
VividMash
¶ ↑
VividMash
is identical to a Mash, with a few exceptions:
-
It has a reference to the root
Chef::Node::Attribute
to which it belongs, and will trigger cache invalidation on that object when mutated. -
It auto-vivifies, that is a reference to a missing element will result in the creation of a new
VividMash
for that key. (This only works when using the element reference method, `[]` – other methods, such as fetch, work as normal). -
attr_accessor style element set and get are supported via method_missing
Constants
Public Class Methods
# File lib/chef/node/attribute_collections.rb, line 128 def initialize(data = {}) super(data) end
Public Instance Methods
# File lib/chef/node/attribute_collections.rb, line 132 def [](key) value = super if !key?(key) value = self.class.new({}, __root__) self[key] = value else value end end
# File lib/chef/node/attribute_collections.rb, line 142 def []=(key, value) ret = super send_reset_cache(__path__, key) ret # rubocop:disable Lint/Void end
# File lib/chef/node/attribute_collections.rb, line 150 def convert_key(key) super end
Mash uses convert_value
to mashify values on input. We override it here to convert hash or array values to VividMash
or AttrArray
for consistency and to ensure that the added parts of the attribute tree will have the correct cache invalidation behavior.
# File lib/chef/node/attribute_collections.rb, line 158 def convert_value(value) case value when VividMash, AttrArray value when Hash VividMash.new(value, __root__, __node__, __precedence__) when Array AttrArray.new(value, __root__, __node__, __precedence__) else value end end
# File lib/chef/node/attribute_collections.rb, line 123 def delete(key, &block) send_reset_cache(__path__, key) super end
# File lib/chef/node/attribute_collections.rb, line 171 def dup Mash.new(self) end
# File lib/chef/node/attribute_collections.rb, line 175 def to_yaml(*opts) to_h.to_yaml(*opts) end