list, get files from openstack swift with fog.

sample-swift.rb

#!/usr/bin/env ruby
# encoding: utf-8

require 'rubygems'
require 'fog'

connection = Fog::Storage.new(
  :provider => 'OpenStack',
  :openstack_auth_url => ENV['OS_AUTH_URL'] + '/tokens',
  :openstack_tenant   => ENV['OS_TENANT_NAME'],
  :openstack_username => ENV['OS_USERNAME'],
  :openstack_api_key  => ENV['OS_PASSWORD'],
)

#
# List files.
#
connection.directories.each do |directory|
  puts "d #{directory.key}/"
  directory.files.each do |file|
    puts " f #{file.key}"
  end
end

#
# Save a file.
#
content = ''
connection.get_object('test-bucket', 'test') do |chunk, remaining, total|
  content << chunk
end

open('test.jpg', 'w') do |f|
  f.write content
end