Module: Chef::Mixin::RecipeDefinitionDSLCore

Includes:
ConvertToClassName, Language
Included in:
Provider, Recipe
Defined in:
lib/chef/mixin/recipe_definition_dsl_core.rb

Instance Method Summary collapse

Methods included from Language

#data_bag, #data_bag_item, #platform?, #search, #value_for_platform

Methods included from ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_symbol, *args, &block) ⇒ Object 



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# File 'lib/chef/mixin/recipe_definition_dsl_core.rb', line 32

def method_missing(method_symbol, *args, &block)
  # If we have a definition that matches, we want to use that instead.  This should
  # let you do some really crazy over-riding of "native" types, if you really want
  # to. 
  if @definitions.has_key?(method_symbol)
    # This dupes the high level object, but we still need to dup the params
    new_def = @definitions[method_symbol].dup
    new_def.params = new_def.params.dup
    new_def.node = @node
    # This sets up the parameter overrides
    new_def.instance_eval(&block) if block
    new_recipe = Chef::Recipe.new(@cookbook_name, @recipe_name, @node, @collection, @definitions, @cookbook_loader)
    new_recipe.params = new_def.params
    new_recipe.params[:name] = args[0]
    new_recipe.instance_eval(&new_def.recipe)
  else
    # Otherwise, we're rocking the regular resource call route.
    method_name = method_symbol.to_s
    rname = convert_to_class_name(method_name)
    
    # If we have a resource like this one, we want to steal its state
    resource = begin
                 args << @collection
                 args << @node
                 Chef::Resource.const_get(rname).new(*args)
               rescue NameError => e
                 if e.to_s =~ /Chef::Resource/
                   raise NameError, "Cannot find #{rname} for #{method_name}\nOriginal exception: #{e.class}: #{e.message}"
                 else
                   raise e
                 end
               end
    resource.load_prior_resource
    resource.cookbook_name = @cookbook_name
    resource.recipe_name = @recipe_name
    resource.params = @params
    # Determine whether this resource is being created in the context of an enclosing Provider
    resource.enclosing_provider = self.is_a?(Chef::Provider) ? self : nil
    resource.instance_eval(&block) if block

    @collection.insert(resource)
    resource
  end
end