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177 lines
4.1 KiB
ReStructuredText
177 lines
4.1 KiB
ReStructuredText
.. _ruby:
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Ruby S3 Examples
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================
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Creating a Connection
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---------------------
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This creates a connection so that you can interact with the server.
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.. code-block:: ruby
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AWS::S3::Base.establish_connection!(
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:server => 'objects.dreamhost.com',
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:use_ssl => true,
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:access_key_id => 'my-access-key',
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:secret_access_key => 'my-secret-key'
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)
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Listing Owned Buckets
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---------------------
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This gets a list of `AWS::S3::Bucket`_ objects that you own.
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This also prints out the bucket name and creation date of each bucket.
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.. code-block:: ruby
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AWS::S3::Service.buckets.each do |bucket|
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puts "#{bucket.name}\t#{bucket.creation_date}"
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end
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The output will look something like this::
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mahbuckat1 2011-04-21T18:05:39.000Z
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mahbuckat2 2011-04-21T18:05:48.000Z
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mahbuckat3 2011-04-21T18:07:18.000Z
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Creating a Bucket
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-----------------
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This creates a new bucket called ``my-new-bucket``
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.. code-block:: ruby
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AWS::S3::Bucket.create('my-new-bucket')
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Listing a Bucket's Content
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--------------------------
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This gets a list of hashes with the contents of each object
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This also prints out each object's name, the file size, and last
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modified date.
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.. code-block:: ruby
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new_bucket = AWS::S3::Bucket.find('my-new-bucket')
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new_bucket.each do |object|
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puts "#{object.key}\t#{object.about['content-length']}\t#{object.about['last-modified']}"
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end
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The output will look something like this if the bucket has some files::
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myphoto1.jpg 251262 2011-08-08T21:35:48.000Z
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myphoto2.jpg 262518 2011-08-08T21:38:01.000Z
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Deleting a Bucket
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-----------------
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.. note::
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The Bucket must be empty! Otherwise it won't work!
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.. code-block:: ruby
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AWS::S3::Bucket.delete('my-new-bucket')
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Forced Delete for Non-empty Buckets
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-----------------------------------
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.. code-block:: ruby
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AWS::S3::Bucket.delete('my-new-bucket', :force => true)
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Creating an Object
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------------------
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This creates a file ``hello.txt`` with the string ``"Hello World!"``
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.. code-block:: ruby
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AWS::S3::S3Object.store(
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'hello.txt',
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'Hello World!',
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'my-new-bucket',
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:content_type => 'text/plain'
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)
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Change an Object's ACL
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----------------------
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This makes the object ``hello.txt`` to be publicly readable, and ``secret_plans.txt``
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to be private.
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.. code-block:: ruby
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policy = AWS::S3::S3Object.acl('hello.txt', 'my-new-bucket')
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policy.grants = [ AWS::S3::ACL::Grant.grant(:public_read) ]
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AWS::S3::S3Object.acl('hello.txt', 'my-new-bucket', policy)
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policy = AWS::S3::S3Object.acl('secret_plans.txt', 'my-new-bucket')
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policy.grants = []
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AWS::S3::S3Object.acl('secret_plans.txt', 'my-new-bucket', policy)
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Download an Object (to a file)
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------------------------------
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This downloads the object ``poetry.pdf`` and saves it in
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``/home/larry/documents/``
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.. code-block:: ruby
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open('/home/larry/documents/poetry.pdf', 'w') do |file|
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AWS::S3::S3Object.stream('poetry.pdf', 'my-new-bucket') do |chunk|
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file.write(chunk)
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end
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end
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Delete an Object
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----------------
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This deletes the object ``goodbye.txt``
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.. code-block:: ruby
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AWS::S3::S3Object.delete('goodbye.txt', 'my-new-bucket')
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Generate Object Download URLs (signed and unsigned)
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---------------------------------------------------
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This generates an unsigned download URL for ``hello.txt``. This works
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because we made ``hello.txt`` public by setting the ACL above.
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This then generates a signed download URL for ``secret_plans.txt`` that
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will work for 1 hour. Signed download URLs will work for the time
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period even if the object is private (when the time period is up, the
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URL will stop working).
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.. code-block:: ruby
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puts AWS::S3::S3Object.url_for(
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'hello.txt',
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'my-new-bucket',
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:authenticated => false
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)
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puts AWS::S3::S3Object.url_for(
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'secret_plans.txt',
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'my-new-bucket',
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:expires_in => 60 * 60
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)
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The output of this will look something like::
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http://objects.dreamhost.com/my-bucket-name/hello.txt
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http://objects.dreamhost.com/my-bucket-name/secret_plans.txt?Signature=XXXXXXXXXXXXXXXXXXXXXXXXXXX&Expires=1316027075&AWSAccessKeyId=XXXXXXXXXXXXXXXXXXX
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.. _`AWS::S3`: http://amazon.rubyforge.org/
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.. _`AWS::S3::Bucket`: http://amazon.rubyforge.org/doc/
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