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#--
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Christopher Walters (<cw@opscode.com>)
# Copyright:: Copyright (c) 2008, 2009 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef/resource'
require 'chef/resource_platform_map'
require 'chef/mixin/convert_to_class_name'
require 'chef/mixin/language'
class Chef
module DSL
# == Chef::DSL::Recipe
# Provides the primary recipe DSL functionality for defining Chef resource
# objects via method calls.
module Recipe
include Chef::Mixin::ConvertToClassName
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 run_context.definitions.has_key?(method_symbol)
# This dupes the high level object, but we still need to dup the params
new_def = run_context.definitions[method_symbol].dup
new_def.params = new_def.params.dup
new_def.node = run_context.node
# This sets up the parameter overrides
new_def.instance_eval(&block) if block
new_recipe = Chef::Recipe.new(cookbook_name, @recipe_name, run_context)
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.
# Checks the new platform => short_name => resource mapping initially
# then fall back to the older approach (Chef::Resource.const_get) for
# backward compatibility
resource_class = Chef::Resource.resource_for_node(method_symbol, run_context.node)
super unless resource_class
raise ArgumentError, "You must supply a name when declaring a #{method_symbol} resource" unless args.size > 0
# If we have a resource like this one, we want to steal its state
args << run_context
resource = resource_class.new(*args)
resource.load_prior_resource
resource.cookbook_name = cookbook_name
resource.recipe_name = @recipe_name
resource.params = @params
resource.source_line = caller[0]
# Determine whether this resource is being created in the context of an enclosing Provider
resource.enclosing_provider = self.is_a?(Chef::Provider) ? self : nil
# Evaluate resource attribute DSL
resource.instance_eval(&block) if block
# Run optional resource hook
resource.after_created
run_context.resource_collection.insert(resource)
resource
end
end
end
end
end
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