Method: Vagrant::Action::Warden#finalize_action

Defined in:
lib/vagrant/action/warden.rb

#finalize_action(action, env) ⇒ Object

A somewhat confusing function which simply initializes each middleware properly to call the next middleware in the sequence.



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# File 'lib/vagrant/action/warden.rb', line 68

def finalize_action(action, env)
  klass, args, block = action

  # Default the arguments to an empty array. Otherwise in Ruby 1.8
  # a `nil` args will actually pass `nil` into the class.
  args ||= []

  if klass.is_a?(Class)
    # A action klass which is to be instantiated with the
    # app, env, and any arguments given
    klass.new(self, env, *args, &block)
  elsif klass.respond_to?(:call)
    # Make it a lambda which calls the item then forwards
    # up the chain
    lambda do |e|
      klass.call(e)
      self.call(e)
    end
  else
    raise "Invalid action: #{action.inspect}"
  end
end