Object Storage Swift - Getting started with the Swift API
Find out how to use the Swift API
Find out how to use the Swift API
Last updated 25th May 2021
You can use the OpenStack API to generate various scripts in order to automate your actions on the Public Cloud.
The OpenStack swiftclient lets you interact with and manage your containers and objects. For example, you can upload files to your containers regularly in order to back them up.
This guide will help you get started with the OpenStack API in order to manage your object containers using the python-swiftclient.
Please note that the following instructions only pertain to the command line interface of a GNU/Linux distribution, after implementing the requirements above.
You can retrieve the list of possible commands from the client's documentation:
admin@server-1:~$ swift --help
Here is the list of the main commands:
|delete||Deletes a container or objects within a container|
|download||Downloads objects from containers|
|list||Lists the containers for the account or the objects for a container|
|post||Updates meta information for the account, container, or object. If the container is not found, it will be created automatically.|
|stat||Displays information for the account, container, or object.|
|upload||Uploads specified files and directories to the given container.|
|capabilities||Retrieves capability of the proxy.|
|tempurl||Generates a temporary URL for a Swift object.|
For an explanation of a specific Swift command, add
--help at the end of it:
admin@server-1:~$ swift post --help Updates meta information for the account, container, or object. If the container is not found, it will be created automatically. Positional arguments: [container] Name of container to post to. [object] Name of object to post. Specify multiple times for multiple objects. [...]
You can also consult the Swift documentation available on the OpenStack website.
admin@server-1:~$ swift post container1
admin@server-1:~$ swift post --header "X-Container-Read: .r:*" container1
admin@server-1:~$ swift stat container1 Account: AUTH_b3e26xxxxxxxxxxxxxxxxxxxb0ba29 Container: container1 Objects: 0 Bytes: 0 Read ACL: .r:* Write ACL: Sync To: Sync Key: Accept-Ranges: bytes X-Trans-Id: B2210C05:8D93_052711A1:01BB_561CC9DF_1B305:30D7 X-Storage-Policy: Policy-0 Connection: close X-Timestamp: 1444726875.27475 Content-Type: text/plain; charset=utf-8
admin@server-1:~$ swift upload container1 images/ images/OVHlogo.png images/OVHSummitKeynote.jpg
A prefix will automatically be added to your files if you send an entire folder instead of a single file.
admin@server-1:~$ swift list container1 images/OVHSummitKeynote.jpg images/OVHlogo.png text1.txt text2.txt text3.txt
You can display all files with a particular prefix using the
admin@server-1:~$ swift list container1 --prefix images images/OVHSummitKeynote.jpg images/OVHlogo.png
If the container is configured as public, you can access the file using a URL:
This URL is made up of an endpoint, available from the Horizon interface, the name of your container and the name of your object (including the prefix).
admin@server-1:~$ swift download container1 text1.txt text1.txt [auth 0.328s, headers 0.452s, total 0.453s, 0.000 MB/s]
You can download multiple files with the same prefix, using the following command:
admin@server-1:~$ swift download container1 --prefix images images/OVHlogo.png [auth 0.383s, headers 0.520s, total 0.522s, 0.135 MB/s] images/OVHSummitKeynote.jpg [auth 0.371s, headers 0.514s, total 0.559s, 2.657 MB/s]
admin@server-1:~$ swift delete container1 text1.txt text1.txt
As with downloading, you can delete multiple files using the same prefix, with the following command:
admin@server-1:~$ swift delete container1 images/* images/OVHSummitKeynote.jpg images/OVHlogo.png
admin@server-1:~$ swift delete container1 text2.txt text3.txt
This will delete all the files in the container.
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