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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Christopher Walters (<cw@opscode.com>)
# Author:: Daniel DeLeo (<dan@kallistec.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# Copyright:: Copyright (c) 2009 Daniel DeLeo
# 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/config'
require 'chef/exceptions'
require 'chef/cookbook/cookbook_version_loader'
require 'chef/cookbook_version'
require 'chef/cookbook/chefignore'
require 'chef/cookbook/metadata'
#
# CookbookLoader class loads the cookbooks lazily as read
#
class Chef
class CookbookLoader
attr_reader :cookbooks_by_name
attr_reader :merged_cookbooks
attr_reader :cookbook_paths
attr_reader :metadata
include Enumerable
def initialize(*repo_paths)
repo_paths = repo_paths.flatten
raise ArgumentError, "You must specify at least one cookbook repo path" if repo_paths.empty?
@cookbooks_by_name = Mash.new
@loaded_cookbooks = {}
@metadata = Mash.new
@cookbooks_paths = Hash.new {|h,k| h[k] = []} # for deprecation warnings
@chefignores = {}
@repo_paths = repo_paths.map do |repo_path|
repo_path = File.expand_path(repo_path)
end
# Used to track which cookbooks appear in multiple places in the cookbook repos
# and are merged in to a single cookbook by file shadowing. This behavior is
# deprecated, so users of this class may issue warnings to the user by checking
# this variable
@merged_cookbooks = []
end
def merged_cookbook_paths # for deprecation warnings
merged_cookbook_paths = {}
@merged_cookbooks.each {|c| merged_cookbook_paths[c] = @cookbooks_paths[c]}
merged_cookbook_paths
end
def load_cookbooks
@repo_paths.each do |repo_path|
Dir[File.join(repo_path, "*")].each do |cookbook_path|
load_cookbook(File.basename(cookbook_path), [repo_path])
end
end
@cookbooks_by_name
end
def load_cookbook(cookbook_name, repo_paths=nil)
repo_paths ||= @repo_paths
repo_paths.each do |repo_path|
@chefignores[repo_path] ||= Cookbook::Chefignore.new(repo_path)
cookbook_path = File.join(repo_path, cookbook_name.to_s)
next unless File.directory?(cookbook_path) and Dir[File.join(repo_path, "*")].include?(cookbook_path)
loader = Cookbook::CookbookVersionLoader.new(cookbook_path, @chefignores[repo_path])
loader.load_cookbooks
next if loader.empty?
cookbook_name = loader.cookbook_name
@cookbooks_paths[cookbook_name] << cookbook_path # for deprecation warnings
if @loaded_cookbooks.key?(cookbook_name)
@merged_cookbooks << cookbook_name # for deprecation warnings
@loaded_cookbooks[cookbook_name].merge!(loader)
else
@loaded_cookbooks[cookbook_name] = loader
end
end
if @loaded_cookbooks.has_key?(cookbook_name)
cookbook_version = @loaded_cookbooks[cookbook_name].cookbook_version
@cookbooks_by_name[cookbook_name] = cookbook_version
@metadata[cookbook_name] = cookbook_version.metadata
end
@cookbooks_by_name[cookbook_name]
end
def [](cookbook)
if @cookbooks_by_name.has_key?(cookbook.to_sym) or load_cookbook(cookbook.to_sym)
@cookbooks_by_name[cookbook.to_sym]
else
raise Exceptions::CookbookNotFoundInRepo, "Cannot find a cookbook named #{cookbook.to_s}; did you forget to add metadata to a cookbook? (http://wiki.opscode.com/display/chef/Metadata)"
end
end
alias :fetch :[]
def has_key?(cookbook_name)
not self[cookbook_name.to_sym].nil?
end
alias :cookbook_exists? :has_key?
alias :key? :has_key?
def each
@cookbooks_by_name.keys.sort { |a,b| a.to_s <=> b.to_s }.each do |cname|
yield(cname, @cookbooks_by_name[cname])
end
end
def cookbook_names
@cookbooks_by_name.keys.sort
end
def values
@cookbooks_by_name.values
end
alias :cookbooks :values
end
end
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