# File lib/fog/aws/rds.rb, line 88 def initialize(options={}) @aws_access_key_id = options[:aws_access_key_id] @region = options[:region] || 'us-east-1' unless ['ap-northeast-1', 'ap-southeast-1', 'eu-west-1', 'us-east-1', 'us-west-1', 'us-west-2'].include?(@region) raise ArgumentError, "Unknown region: #{@region.inspect}" end end