CloudWatchから料金情報を取得するRubyスクリプト

get_billing_from_cloudwatch.rb

require 'aws-sdk'                                                                                           

cw = AWS::CloudWatch.new(:proxy_uri => ENV['HTTP_PROXY'] || ENV['http_proxy'])
cw.metrics.filter('metric_name', 'EstimatedCharges').each do |m| 
  service_name = m.dimensions.find { |x| x[:name] == 'ServiceName' }
  service_name = service_name ? service_name[:value] : "Total"
  stats = m.statistics(
    :start_time => Time.now - 24 * 3600,
    :end_time => Time.now,
    :statistics => ['Maximum']
  )
  printf("%-15s $%s\n", service_name, stats.datapoints.last[:maximum])
end