def initialize(options={})
@aws_access_key_id = options[:aws_access_key_id]
@aws_secret_access_key = options[:aws_secret_access_key]
@hmac = Fog::HMAC.new('sha256', @aws_secret_access_key)
options[:region] ||= 'us-east-1'
@host = options[:host] || case options[:region]
when 'ap-northeast-1'
'rds.ap-northeast-1.amazonaws.com'
when 'ap-southeast-1'
'rds.ap-southeast-1.amazonaws.com'
when 'eu-west-1'
'rds.eu-west-1.amazonaws.com'
when 'us-east-1'
'rds.us-east-1.amazonaws.com'
when 'us-west-1'
'rds.us-west-1.amazonaws.com'
else
raise ArgumentError, "Unknown region: #{options[:region].inspect}"
end
@path = options[:path] || '/'
@port = options[:port] || 443
@scheme = options[:scheme] || 'https'
@connection = Fog::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", options[:persistent])
end