Module: Chef::Node::Mixin::DeepMergeCache
- Included in:
- Attribute
- Defined in:
- lib/chef/node/mixin/deep_merge_cache.rb
Instance Attribute Summary collapse
-
#deep_merge_cache ⇒ Object
Cache of deep merged values by top-level key.
Instance Method Summary collapse
- #[](key) ⇒ Object
- #initialize ⇒ Object
-
#reset_cache(path = nil) ⇒ Object
(also: #reset)
Invalidate a key in the deep_merge_cache.
Instance Attribute Details
#deep_merge_cache ⇒ Object
Cache of deep merged values by top-level key. This is a simple hash which has keys that are the top-level keys of the node object, and we save the computed deep-merge for that key here. There is no cache of subtrees.
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# File 'lib/chef/node/mixin/deep_merge_cache.rb', line 27 def deep_merge_cache @deep_merge_cache end |
Instance Method Details
#[](key) ⇒ Object
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# File 'lib/chef/node/mixin/deep_merge_cache.rb', line 50 def [](key) ret = if deep_merge_cache.key?(key.to_s) # return the cache of the deep merged values by top-level key deep_merge_cache[key.to_s] else # save all the work of computing node[key] deep_merge_cache.internal_set(key.to_s, merged_attributes(key)) end ret = ret.call while ret.is_a?(::Chef::DelayedEvaluator) ret end |
#initialize ⇒ Object
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# File 'lib/chef/node/mixin/deep_merge_cache.rb', line 29 def initialize @merged_attributes = nil @combined_override = nil @combined_default = nil @deep_merge_cache = Chef::Node::ImmutableMash.new end |
#reset_cache(path = nil) ⇒ Object Also known as: reset
Invalidate a key in the deep_merge_cache. If called with nil, or no arg, this will invalidate the entire deep_merge cache. In the case of the user doing node.default[‘bar’]= that eventually results in a call to reset_cache(‘foo’) here. A node.default=hash_thing call must invalidate the entire cache and re-deep-merge the entire node object.
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# File 'lib/chef/node/mixin/deep_merge_cache.rb', line 40 def reset_cache(path = nil) if path.nil? deep_merge_cache.regular_clear else deep_merge_cache.regular_delete(path.to_s) end end |