module Chef::Mixin::DescendantsTracker

Public Class Methods

descendants(klass) click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 37
def descendants(klass)
  arr = []
  accumulate_descendants(klass, arr)
  arr
end
direct_descendants(klass) click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 33
def direct_descendants(klass)
  @@direct_descendants[klass] || []
end
find_descendants_by_name(klass, name) click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 43
def find_descendants_by_name(klass, name)
  descendants(klass).first { |c| c.name == name }
end
store_inherited(klass, descendant) click to toggle source

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

# File lib/chef/mixin/descendants_tracker.rb, line 49
def store_inherited(klass, descendant)
  (@@direct_descendants[klass] ||= []) << descendant
end

Private Class Methods

accumulate_descendants(klass, acc) click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 55
def accumulate_descendants(klass, acc)
  if direct_descendants = @@direct_descendants[klass]
    acc.concat(direct_descendants)
    direct_descendants.each { |direct_descendant| accumulate_descendants(direct_descendant, acc) }
  end
end

Public Instance Methods

descendants() click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 76
def descendants
  DescendantsTracker.descendants(self)
end
direct_descendants() click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 68
def direct_descendants
  DescendantsTracker.direct_descendants(self)
end
find_descendants_by_name(name) click to toggle source
# File lib/chef/mixin/descendants_tracker.rb, line 72
def find_descendants_by_name(name)
  DescendantsTracker.find_descendants_by_name(self, name)
end
inherited(base) click to toggle source
Calls superclass method
# File lib/chef/mixin/descendants_tracker.rb, line 63
def inherited(base)
  DescendantsTracker.store_inherited(self, base)
  super
end