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require 'digest/md5'
require 'hashie/mash'
module ChefZero
module CookbookData
def self.to_hash(cookbook, name, version=nil)
result = files_from(cookbook)
recipe_names = result[:recipes].map do |recipe|
recipe_name = recipe[:name][0..-2]
recipe_name == 'default' ? name : "#{name}::#{recipe_name}"
end
result[:metadata] = metadata_from(cookbook, name, version, recipe_names)
result[:name] = "#{name}-#{result[:metadata][:version]}"
result[:json_class] = 'Chef::CookbookVersion'
result[:cookbook_name] = name
result[:version] = result[:metadata][:version]
result[:chef_type] = 'cookbook_version'
result
end
def self.metadata_from(directory, name, version, recipe_names)
metadata = PretendCookbookMetadata.new(PretendCookbook.new(name, recipe_names))
# If both .rb and .json exist, read .rb
# TODO if recipes has 3 recipes in it, and the Ruby/JSON has only one, should
# the resulting recipe list have 1, or 3-4 recipes in it?
if has_child(directory, 'metadata.rb')
metadata.instance_eval(read_file(directory, 'metadata.rb'))
elsif has_child(directory, 'metadata.json')
metadata.from_json(read_file(directory, 'metadata.json'))
end
result = {}
metadata.to_hash.each_pair do |key,value|
result[key.to_sym] = value
end
result[:version] = version if version
result
end
private
# Just enough cookbook to make a Metadata object
class PretendCookbook
def initialize(name, fully_qualified_recipe_names)
@name = name
@fully_qualified_recipe_names = fully_qualified_recipe_names
end
attr_reader :name, :fully_qualified_recipe_names
end
# Handles loading configuration values from a Chef config file
#
# @author Justin Campbell <justin.campbell@riotgames.com>
class PretendCookbookMetadata < Hash
# @param [String] path
def initialize(cookbook)
self.name(cookbook.name)
self.recipes(cookbook.fully_qualified_recipe_names)
%w(dependencies supports recommendations suggestions conflicting providing replacing recipes).each do |cookbook_arg|
self[cookbook_arg.to_sym] = Hashie::Mash.new
end
end
def from_json(filepath)
self.merge!(JSON.parse(File.read(filepath)))
end
private
def depends(cookbook, *version_constraints)
cookbook_arg(:dependencies, cookbook, version_constraints)
end
def supports(cookbook, *version_constraints)
cookbook_arg(:supports, cookbook, version_constraints)
end
def recommends(cookbook, *version_constraints)
cookbook_arg(:recommendations, cookbook, version_constraints)
end
def suggests(cookbook, *version_constraints)
cookbook_arg(:suggestions, cookbook, version_constraints)
end
def conflicts(cookbook, *version_constraints)
cookbook_arg(:conflicting, cookbook, version_constraints)
end
def provides(cookbook, *version_constraints)
cookbook_arg(:providing, cookbook, version_constraints)
end
def replaces(cookbook, *version_constraints)
cookbook_arg(:replacing, cookbook, version_constraints)
end
def recipe(recipe, description)
self[:recipes][recipe] = description
end
def attribute(name, options)
self[:attributes][name] = options
end
def grouping(name, options)
self[:grouping][name] = options
end
def cookbook_arg(key, cookbook, version_constraints)
self[key][cookbook] = version_constraints.first || ">= 0.0.0"
end
def method_missing(key, value = nil)
if value.nil?
self[key.to_sym]
else
store key.to_sym, value
end
end
end
def self.files_from(directory)
# TODO some support .rb only
result = {
:attributes => load_child_files(directory, 'attributes', false),
:definitions => load_child_files(directory, 'definitions', false),
:recipes => load_child_files(directory, 'recipes', false),
:libraries => load_child_files(directory, 'libraries', false),
:templates => load_child_files(directory, 'templates', true),
:files => load_child_files(directory, 'files', true),
:resources => load_child_files(directory, 'resources', true),
:providers => load_child_files(directory, 'providers', true),
:root_files => load_files(directory, false)
}
set_specificity(result[:templates])
set_specificity(result[:files])
result
end
def self.has_child(directory, name)
if directory.is_a?(Hash)
directory.has_key?(name)
else
directory.child(name).exists?
end
end
def self.read_file(directory, name)
if directory.is_a?(Hash)
directory[name]
else
directory.child(name).read
end
end
def self.get_directory(directory, name)
if directory.is_a?(Hash)
directory[name].is_a?(Hash) ? directory[name] : nil
else
result = directory.child(name)
result.dir? ? result : nil
end
end
def self.list(directory)
if directory.is_a?(Hash)
directory.keys
else
directory.children.map { |c| c.name }
end
end
def self.load_child_files(parent, key, recursive)
result = load_files(get_directory(parent, key), recursive)
result.each do |file|
file[:path] = "#{key}/#{file[:path]}"
end
result
end
def self.load_files(directory, recursive)
result = []
if directory
list(directory).each do |child_name|
dir = get_directory(directory, child_name)
if dir
if recursive
result += load_child_files(directory, child_name, recursive)
end
else
result += load_file(read_file(directory, child_name), child_name)
end
end
end
result
end
def self.load_file(value, name)
[{
:name => name,
:path => name,
:checksum => Digest::MD5.hexdigest(value),
:specificity => 'default'
}]
end
def self.set_specificity(files)
files.each do |file|
parts = file[:path].split('/')
raise "Only directories are allowed directly under templates or files: #{file[:path]}" if parts.size == 2
file[:specificity] = parts[1]
end
end
end
end
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