Quickly dump your latest Heroku backup into Rackspace Cloud Files via rake db:backup

db.rake

namespace :db do
  desc 'Copy latest Heroku backup over to our Rackspace account'
  task backup: :environment do
    require 'heroku/client/pgbackups'
    require 'open-uri'

    credentials = YAML::load_file(Rails.root.join('config', 'rackspace.yml'))
    api_key     = credentials['production']['api_key']
    container   = credentials['production']['container']
    username    = credentials['production']['username'] 
    url         = Heroku::Client::Pgbackups.new(ENV['PGBACKUPS_URL']).get_latest_backup['public_url']
    
    open('tmp/backup.dump', 'wb') do |file|
      file << open(url).read
    end

    etag = `md5sum tmp/backup.dump`.to_s.split(' ').first

    _, destination, token = `     curl -D - \
        -H "X-Auth-Key: #{api_key}" \
        -H "X-Auth-User: #{username}" \
       https://auth.api.rackspacecloud.com/v1.0 | grep "X-"`.split("\n").map(&:strip).delete_if(&:blank?).map do |key|
        key.split(' ').last
      end

    puts command = <<COMMAND

curl -X PUT -T tmp/backup.dump \
       -H "ETag: #{etag}" \
       -H "X-Auth-Token: #{token}" \
      #{destination}/#{container}/backup-#{Time.now.to_i}.dump

COMMAND

     `#{command}`
  end
end

Gemfile

gem 'heroku'