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diff --git a/doc/radosgw/s3/python.rst b/doc/radosgw/s3/python.rst new file mode 100644 index 000000000..35f682893 --- /dev/null +++ b/doc/radosgw/s3/python.rst @@ -0,0 +1,197 @@ +.. _python: + +Python S3 Examples +================== + +Creating a Connection +--------------------- + +This creates a connection so that you can interact with the server. + +.. code-block:: python + + import boto + import boto.s3.connection + access_key = 'put your access key here!' + secret_key = 'put your secret key here!' + + conn = boto.connect_s3( + aws_access_key_id = access_key, + aws_secret_access_key = secret_key, + host = 'objects.dreamhost.com', + #is_secure=False, # uncomment if you are not using ssl + calling_format = boto.s3.connection.OrdinaryCallingFormat(), + ) + + +Listing Owned Buckets +--------------------- + +This gets a list of Buckets that you own. +This also prints out the bucket name and creation date of each bucket. + +.. code-block:: python + + for bucket in conn.get_all_buckets(): + print("{name}\t{created}".format( + name = bucket.name, + created = bucket.creation_date, + )) + +The output will look something like this:: + + mahbuckat1 2011-04-21T18:05:39.000Z + mahbuckat2 2011-04-21T18:05:48.000Z + mahbuckat3 2011-04-21T18:07:18.000Z + + +Creating a Bucket +----------------- + +This creates a new bucket called ``my-new-bucket`` + +.. code-block:: python + + bucket = conn.create_bucket('my-new-bucket') + + +Listing a Bucket's Content +-------------------------- + +This gets a list of objects in the bucket. +This also prints out each object's name, the file size, and last +modified date. + +.. code-block:: python + + for key in bucket.list(): + print("{name}\t{size}\t{modified}".format( + name = key.name, + size = key.size, + modified = key.last_modified, + )) + +The output will look something like this:: + + myphoto1.jpg 251262 2011-08-08T21:35:48.000Z + myphoto2.jpg 262518 2011-08-08T21:38:01.000Z + + +Deleting a Bucket +----------------- + +.. note:: + + The Bucket must be empty! Otherwise it won't work! + +.. code-block:: python + + conn.delete_bucket(bucket.name) + + +Forced Delete for Non-empty Buckets +----------------------------------- + +.. attention:: + + not available in python + + +Creating an Object +------------------ + +This creates a file ``hello.txt`` with the string ``"Hello World!"`` + +.. code-block:: python + + key = bucket.new_key('hello.txt') + key.set_contents_from_string('Hello World!') + + +Uploading an Object or a File +----------------------------- + +This creates a file ``logo.png`` with the contents from the file ``"logo.png"`` + +.. code-block:: python + + key = bucket.new_key('logo.png') + key.set_contents_from_filename('logo.png') + + +Change an Object's ACL +---------------------- + +This makes the object ``hello.txt`` to be publicly readable, and +``secret_plans.txt`` to be private. + +.. code-block:: python + + hello_key = bucket.get_key('hello.txt') + hello_key.set_canned_acl('public-read') + plans_key = bucket.get_key('secret_plans.txt') + plans_key.set_canned_acl('private') + + +Download an Object (to a file) +------------------------------ + +This downloads the object ``perl_poetry.pdf`` and saves it in +``/home/larry/documents/`` + +.. code-block:: python + + key = bucket.get_key('perl_poetry.pdf') + key.get_contents_to_filename('/home/larry/documents/perl_poetry.pdf') + + +Delete an Object +---------------- + +This deletes the object ``goodbye.txt`` + +.. code-block:: python + + bucket.delete_key('goodbye.txt') + + +Generate Object Download URLs (signed and unsigned) +--------------------------------------------------- + +This generates an unsigned download URL for ``hello.txt``. This works +because we made ``hello.txt`` public by setting the ACL above. +This then generates a signed download URL for ``secret_plans.txt`` that +will work for 1 hour. Signed download URLs will work for the time +period even if the object is private (when the time period is up, the +URL will stop working). + +.. code-block:: python + + hello_key = bucket.get_key('hello.txt') + hello_url = hello_key.generate_url(0, query_auth=False, force_http=True) + print(hello_url) + + plans_key = bucket.get_key('secret_plans.txt') + plans_url = plans_key.generate_url(3600, query_auth=True, force_http=True) + print(plans_url) + +The output of this will look something like:: + + http://objects.dreamhost.com/my-bucket-name/hello.txt + http://objects.dreamhost.com/my-bucket-name/secret_plans.txt?Signature=XXXXXXXXXXXXXXXXXXXXXXXXXXX&Expires=1316027075&AWSAccessKeyId=XXXXXXXXXXXXXXXXXXX + +Using S3 API Extensions +----------------------- + +To use the boto3 client to tests the RadosGW extensions to the S3 API, the `extensions file`_ should be placed under: ``~/.aws/models/s3/2006-03-01/`` directory. +For example, unordered list of objects could be fetched using: + +.. code-block:: python + + print(conn.list_objects(Bucket='my-new-bucket', AllowUnordered=True)) + + +Without the extensions file, in the above example, boto3 would complain that the ``AllowUnordered`` argument is invalid. + + +.. _extensions file: https://github.com/ceph/ceph/blob/main/examples/rgw/boto3/service-2.sdk-extras.json |