require 'yaml' module SimpleProvision class Configuration MissingServerType = Class.new(StandardError) MissingServerConfiguration = Class.new(StandardError) attr_reader :options def initialize(command_line_options = {}) @command_line_options = command_line_options read_and_parse_server_options raise MissingServerType, "Please specify a type of server you want to create using the --type option" unless options[:type] end private def default_options begin YAML.load(File.read('servers/defaults.yml')) rescue Errno::ENOENT {} end end def server_options begin YAML.load(File.read(server_file)) rescue Errno::ENOENT raise MissingServerConfiguration, "Please create a configuration file './servers/#{type}.yml'" end end def server_file "servers/#{type}.yml" end def read_and_parse_server_options options_string_hash = default_options.merge(server_options).merge(@command_line_options) @options = Hash[options_string_hash.map{ |(k,v)| [k.to_sym, v] }] end def type @command_line_options[:type] end end end