On May 12, 2022, at 13:10, Frank Cazabon <frank.caza...@gmail.com> wrote:
>
> anybody here ever had to do anything with Rackspace's Storage API to move
> objects around?
>
> I think I've seen Rackspace mentioned here before so I'm hoping.
>
> I've got to copy a file from one container to another (actually it's a lot of
> files but I'm just trying to prove the concept).
I wrote the Python SDK for Rackspace (actually, all of OpenStack), and here's
the code for copying one object to another container:
@_handle_container_not_found
def copy_object(self, container, obj, new_container, new_obj_name=None,
content_type=None):
"""
Copies the object to the new container, optionally giving it a new name.
If you copy to the same container, you must supply a different name.
Returns the etag of the newly-copied object.
You can optionally change the content_type of the object by supplying
that in the 'content_type' parameter.
"""
nm = new_obj_name or utils.get_name(obj)
uri = "/%s/%s" % (utils.get_name(new_container), nm)
copy_from = "/%s/%s" % (utils.get_name(container), utils.get_name(obj))
headers = {"X-Copy-From": copy_from,
"Content-Length": "0"}
if content_type:
headers["Content-Type"] = content_type
resp, resp_body = self.api.method_put(uri, headers=headers)
return resp.headers.get("etag")
To translate to English, the URI is the base URI for the service, with
"/new_container/new_name" appended to it. "new_name" defaults to the original
object's name, but if you supply a different name for the copied object, that
one is used instead.
The headers contain an item "X-Copy-From", whose value is
"/original_container/original_name", which tells the API where to copy from.
The operation is a PUT. "COPY" is a non-standard method; I don't know what
idiot wrote the documentation you cited. These are the HTTP methods:
https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Request_methods
Hope that makes some sense. If not, please let me know what needs clarifying.
-- Ed Leafe
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