Mahendra M created LIBCLOUD-275:
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Summary: Utility APIs for containers
Key: LIBCLOUD-275
URL: https://issues.apache.org/jira/browse/LIBCLOUD-275
Project: Libcloud
Issue Type: New Feature
Components: Storage
Reporter: Mahendra M
Assignee: Mahendra M
Priority: Minor
While working with libcloud, I thought it will be good to have some utility
APIs to containers, which will help in easier use. Some APIs will have a base
class implementation, which can be easily over-written in each driver based on
the storage provider.
Some APIs that I have in mind are:
1. container.copy_object(obj, target_container)
Copies an object from one container to another. Base class implementation can be
target_container.upload_object_via_stream(container.download_object_as_stream(obj),
obj.name)
In each driver, this can be over-written to use specific methods to do this
(AWS, Azure etc. provide APIs for doing this).
2. container.move_object(obj, target_container)
Base class implementation can be:
container.copy_object(obj, target_container)
obj.delete()
Again, driver specific extensions can be done.
3. container.sync_to_local(local_path, only_missing=True, only_newer=False)
4. container.sync_from_local(local_path, followlinks=False, prefix='',
only_missing=True, only_newer=False)
The above two functions are good for syncing local folder repos with cloud. The
functions are ridiculously easy to implement and will provide good mechanism
for sync. (For eg: syncing a folder which contains 500 HLS chunks of a video)
The parameters used are:
* only_missing - sync only files that missing in the target (container or
folder)
* only_newer - sync only files that have last-modified (or m_time) more than
the target
* prefix - A prefix to be prefixed to each object name while syncing from a
local folder.
I am just opening a ticket so that we can discuss this and finalize it. Once
everyone agree, I can submit/check-in a patch
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