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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_set'
require 'chef/resource_list'
require 'chef/resource_collection/resource_collection_serialization'
##
# TODO add class documentation
class Chef
class ResourceCollection
include ResourceCollectionSerialization
attr_reader :resource_set, :resource_list
def initialize
@resource_set = ResourceSet.new
@resource_list = ResourceList.new
end
# TODO fundamentally we want to write objects into 2 different data containers. We can proxy reads, but it is
# much harder to proxy writes through 1 object.
# TODO insert calls we might need?
# :insert, :insert_at, :[]=, :<<, :push
# :insert_as
# TODO when there were 2 resources with the same key in resource_set, how do we handle notifications since they get copied?
# Did the old class only keep the last seen reference?
# TODO do we need to implement a dup method? Run_context was shallowly copying resource_collection before
RESOURCE_LIST_METHODS = Enumerable.instance_methods +
[:all_resources, :[], :each, :execute_each_resource, :each_index, :empty?]
RESOURCE_SET_METHODS = [:lookup, :find, :resources]
def method_missing(name, *args, &block)
if RESOURCE_LIST_METHODS.include?(name)
proxy = @resource_list
elsif RESOURCE_SET_METHODS.include?(name)
proxy = @resource_set
else
raise NoMethodError.new("ResourceCollection does not proxy `#{name}`", name, args)
end
if block
proxy.send(name, *args, &block)
else
proxy.send(name, *args)
end
end
end
end
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