Sample Ruby Code Using DreamObjects OpenStack Swift-compatible API

This article lists several Ruby code examples to interact with DreamObjects.

Creating a Connection

Create a connection so you can interact with the server.

require 'cloudfiles'
username = 'account_name:user_name'
api_key  = 'your_secret_key'

conn = CloudFiles::Connection.new(
        :username => username,
        :api_key  => api_key,
        :auth_url => 'http://objects-us-west-1.dream.io/auth'
)

Listing Owned Containers

Get a list of containers you own while printing out the container name.

conn.containers.each do |container|
        puts container
end

The output looks something like this:

mahbuckat1
mahbuckat2
mahbuckat3

Creating a Container

Creates a new container called my-new-container.

container = conn.create_container('my-new-container')

Listing a Container’s Content

Get a list of objects in the container while printing out each object’s name, the file size, and last modified date.

require 'date'  # not necessary in the next version

container.objects_detail.each do |name, data|
        puts "#{name}\t#{data[:bytes]}\t#{data[:last_modified]}"
end

The output looks something like this:

myphoto1.jpg 251262  2011-08-08T21:35:48.000Z
myphoto2.jpg 262518  2011-08-08T21:38:01.000Z

Deleting a Container

The Container must be empty, otherwise it will not work.

container.delete_container('my-new-container')

Creating an Object

Create a file hello.txt from the file named my_hello.txt.

obj = container.create_object('hello.txt')
obj.load_from_filename('./my_hello.txt')
obj.content_type = 'text/plain'

Download an Object (to a file)

Download the object hello.txt and saves it in ./my_hello.txt.

obj = container.object('hello.txt')
obj.save_to_filename('./my_hello.txt')

Delete an Object

Delete the object goodbye.txt.

container.delete_object('goodbye.txt')

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