Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
Description
While testing out the libcloud storage abstraction I've come across a curious omission in driver support. It seems that for many drivers there is additional support for the list_container_objects() and iterate_container_objects() to support a prefix (or ex_prefix).
This functionality is not present in the Azure driver for some reason. I've gone and checked the list_blobs API and it also supports this functionality as seen here:
https://docs.microsoft.com/en-us/rest/api/storageservices/list-blobs
I've attempted a quick and dirty patch that seems to work as well.
azure_blobs.py Line 384
- def iterate_container_objects(self, container):
+ def iterate_container_objects(self, container, ex_prefix=None):
"""
@inherits: :class:`StorageDriver.iterate_container_objects`
"""
params = {'restype': 'container',
'comp': 'list',
+ 'prefix': ex_prefix,
'maxresults': RESPONSES_PER_REQUEST,
'include': 'metadata'}
Line 419 (Add new function)
def list_container_objects(self, container, ex_prefix=None):
"""
Return a list of objects for the given container.
:param container: Container instance.
:type container: :class:`Container`
:param ex_prefix: Only return objects starting with ex_prefix
:type ex_prefix: ``str``
:return: A list of Object instances.
:rtype: ``list`` of :class:`Object`
"""
return list(self.iterate_container_objects(container,
ex_prefix=ex_prefix))
I've just worked around this at a higher level for now. There isn't any urgency on my end, but it would be nice if the abstraction was more consistent so I could remove the workaround code.
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