rake task to show size of all files in a s3 account

s3_size.rake

require 'fog'

desc "Tell us how much space is in use on S3"
namespace :s3 do
  task usage: :environment do
    size = 0
    
    connection = Fog::Storage.new(
      provider:               'AWS',
      aws_access_key_id:      ENV['aws_access_key_id'],
      aws_secret_access_key:  ENV['aws_secret_access_key'],
      region:                 'us-east-1'
    )
    
    connection.directories.each do |directory|
      directory.files.each do |file|
        size += file.content_length
      end
    end
    
    puts "#{size / 1073741824} GB"
  end
end