Method: Chef::NodeMap#delete_class

Defined in:
lib/chef/node_map.rb

#delete_class(klass) ⇒ Hash

Remove a class from all its matchers in the node_map, will remove mappings completely if its the last matcher left

Note that this leaks the internal structure out a bit, but the main consumer of this (poise/halite) cares only about the keys in the returned Hash.

Parameters:

  • klass (Class) —

    the class to seek and destroy

Returns:

  • (Hash) —

    deleted entries in the same format as the @map



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# File 'lib/chef/node_map.rb', line 156

def delete_class(klass)
  raise "please use a Class type for the klass argument" unless klass.is_a?(Class)

  deleted = {}
  map.each do |key, matchers|
    deleted_matchers = []
    matchers.delete_if do |matcher|
      # because matcher[:klass] may be a string (which needs to die), coerce both to strings to compare somewhat canonically
      if matcher[:klass].to_s == klass.to_s
        deleted_matchers << matcher
        true
      end
    end
    deleted[key] = deleted_matchers unless deleted_matchers.empty?
    map.delete(key) if matchers.empty?
  end
  deleted
end