Module: Chef::Mixin::DescendantsTracker

Included in:
Provider, Resource
Defined in:
lib/chef/mixin/descendants_tracker.rb

Constant Summary collapse

@@direct_descendants = 
{}

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.descendants(klass) ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 38

def descendants(klass)
  arr = []
  accumulate_descendants(klass, arr)
  arr
end

.direct_descendants(klass) ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 34

def direct_descendants(klass)
  @@direct_descendants[klass] || []
end

.find_descendants_by_name(klass, name) ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 44

def find_descendants_by_name(klass, name)
  descendants(klass).first {|c| c.name == name }
end

.store_inherited(klass, descendant) ⇒ Object

This is the only method that is not thread safe, but is only ever called during the eager loading phase.



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# File 'lib/chef/mixin/descendants_tracker.rb', line 50

def store_inherited(klass, descendant)
  (@@direct_descendants[klass] ||= []) << descendant
end

Instance Method Details

#descendants ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 77

def descendants
  DescendantsTracker.descendants(self)
end

#direct_descendants ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 69

def direct_descendants
  DescendantsTracker.direct_descendants(self)
end

#find_descendants_by_name(name) ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 73

def find_descendants_by_name(name)
  DescendantsTracker.find_descendants_by_name(self, name)
end

#inherited(base) ⇒ Object 



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# File 'lib/chef/mixin/descendants_tracker.rb', line 64

def inherited(base)
  DescendantsTracker.store_inherited(self, base)
  super
end