Openstack swift using

gistfile1.rb

require 'yajl'
require "rest-client"
require "digest/md5"

module Swift

  class Object

    attr_reader :name, :container

    def initialize container, name
      @container = container
      @name = name
    end

    def write file, params = { 'ETag' => Digest::MD5.hexdigest(file) }
      container.put( name, file, params ).code == 201
    end

  end

  class Container

    attr_reader :name, :connection

    def initialize connection, name
      @connection = connection
      @name = name
    end

    def objects
      Yajl::Parser.parse connection.get( name ).body
    end

    def object name
      Object.new self, name
    end

    def delete_object object_name
      delete( object_name ).code == 204
    end

    def put object_name, file = nil, params = {}
      connection.put( "#{name}/#{ object_name }", file, params )
    end

    def delete v
      connection.delete "#{name}/#{ v }"
    end

  end

  class Connection

    attr_reader :temp_url, :auth_token

    def initialize( user: String, key: String, auth_url: String )
      response = RestClient.get auth_url, x_auth_user: user, x_auth_key: key
      @temp_url = response.headers[:x_storage_url]
      @auth_token = response.headers[:x_auth_token]
    end

    def container name
      Container.new self, name
    end

    def delete_container container_name
      delete( container_name ).code == 204
    end

    def create_container container_name
      put( container_name ).code == 201
    end

    def get v
      RestClient.get "#{ temp_url }/#{v}", x_auth_token: auth_token, accept: 'json'
    end

    def delete v
      RestClient.delete "#{ temp_url }/#{v}", x_auth_token: auth_token, accept: 'json'
    end

    def put v, file = nil, params = {}
      RestClient.put "#{ temp_url }/#{v}", file, params.merge(x_auth_token: auth_token, accept: 'json')
    end

  end

end

#using
swift = Swift::Connection.new user: '<user>', key: '<key>', auth_url: '<auth_url>'
c = swift.container( 'assets' )
o = c.object('file')
o.write File.new('local_file').read, 'text/plain; charset=utf-8'