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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Christopher Walters (<cw@opscode.com>)
# Author:: Tim Hinderliter (<tim@opscode.com>)
# Copyright:: Copyright (c) 2008-2010 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_collection'
require 'chef/cookbook_version'
require 'chef/node'
require 'chef/role'
require 'chef/log'
require 'chef/recipe'
require 'chef/run_context/cookbook_compiler'
class Chef
# == Chef::RunContext
# Value object that loads and tracks the context of a Chef run
class RunContext
attr_reader :node, :cookbook_collection, :definitions
# Needs to be settable so deploy can run a resource_collection independent
# of any cookbooks.
attr_accessor :resource_collection, :immediate_notification_collection, :delayed_notification_collection
attr_reader :events
attr_reader :loaded_recipes
attr_reader :loaded_attributes
# Creates a new Chef::RunContext object and populates its fields. This object gets
# used by the Chef Server to generate a fully compiled recipe list for a node.
#
# === Returns
# object<Chef::RunContext>:: Duh. :)
def initialize(node, cookbook_collection, events)
@node = node
@cookbook_collection = cookbook_collection
@resource_collection = Chef::ResourceCollection.new
@immediate_notification_collection = Hash.new {|h,k| h[k] = []}
@delayed_notification_collection = Hash.new {|h,k| h[k] = []}
@definitions = Hash.new
@loaded_recipes = {}
@loaded_attributes = {}
@events = events
@node.run_context = self
end
def load(run_list_expansion)
compiler = CookbookCompiler.new(self, run_list_expansion, events)
compiler.compile
end
# Looks up an attribute file given the +cookbook_name+ and
# +attr_file_name+. Used by DSL::IncludeAttribute
def resolve_attribute(cookbook_name, attr_file_name)
cookbook = cookbook_collection[cookbook_name]
raise Chef::Exceptions::CookbookNotFound, "could not find cookbook #{cookbook_name} while loading attribute #{name}" unless cookbook
attribute_filename = cookbook.attribute_filenames_by_short_filename[attr_file_name]
raise Chef::Exceptions::AttributeNotFound, "could not find filename for attribute #{attr_file_name} in cookbook #{cookbook_name}" unless attribute_filename
attribute_filename
end
def notifies_immediately(notification)
nr = notification.notifying_resource
if nr.instance_of?(Chef::Resource)
@immediate_notification_collection[nr.name] << notification
else
@immediate_notification_collection[nr.to_s] << notification
end
end
def notifies_delayed(notification)
nr = notification.notifying_resource
if nr.instance_of?(Chef::Resource)
@delayed_notification_collection[nr.name] << notification
else
@delayed_notification_collection[nr.to_s] << notification
end
end
def immediate_notifications(resource)
if resource.instance_of?(Chef::Resource)
return @immediate_notification_collection[resource.name]
else
return @immediate_notification_collection[resource.to_s]
end
end
def delayed_notifications(resource)
if resource.instance_of?(Chef::Resource)
return @delayed_notification_collection[resource.name]
else
return @delayed_notification_collection[resource.to_s]
end
end
def include_recipe(*recipe_names)
result_recipes = Array.new
recipe_names.flatten.each do |recipe_name|
if result = load_recipe(recipe_name)
result_recipes << result
end
end
result_recipes
end
def load_recipe(recipe_name)
Chef::Log.debug("Loading Recipe #{recipe_name} via include_recipe")
cookbook_name, recipe_short_name = Chef::Recipe.parse_recipe_name(recipe_name)
if loaded_fully_qualified_recipe?(cookbook_name, recipe_short_name)
Chef::Log.debug("I am not loading #{recipe_name}, because I have already seen it.")
false
else
loaded_recipe(cookbook_name, recipe_short_name)
cookbook = cookbook_collection[cookbook_name]
cookbook.load_recipe(recipe_short_name, self)
end
end
def loaded_fully_qualified_recipe?(cookbook, recipe)
@loaded_recipes.has_key?("#{cookbook}::#{recipe}")
end
def loaded_recipe?(recipe)
cookbook, recipe_name = Chef::Recipe.parse_recipe_name(recipe)
loaded_fully_qualified_recipe?(cookbook, recipe_name)
end
def loaded_fully_qualified_attribute?(cookbook, attribute_file)
@loaded_attributes.has_key?("#{cookbook}::#{attribute_file}")
end
def loaded_attribute(cookbook, attribute_file)
@loaded_attributes["#{cookbook}::#{attribute_file}"] = true
end
private
def loaded_recipe(cookbook, recipe)
@loaded_recipes["#{cookbook}::#{recipe}"] = true
end
end
end
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