How do you copy file across account with SwiftService

Question

I look into SwiftClient document on Cross Account Object Copy

curl -i -X PUT http://<host>:<port>
/v1/AUTH_test1/container/destination_obj
 -H 'X-Auth-Token: <token>'
 -H 'X-Copy-From: /container/source_obj'
 -H 'X-Copy-From-Account: AUTH_test2'
 -H 'Content-Length: 0'

and this work fine. But since I have already use SwiftService class from python-swiftclient library but the closest thing I could find is this commit on cross account upload. Plus it only show how to do it using Connection class and not SwiftService.

I tried overriding os_storage_url when calling copy method and inside SwiftCopyObject both without success.

Any idea what I have to do here?

---

UPDATED:

I have tried to hack around the library by overriding HTTP headers when copy and upload.

Copy

Overriding this method by putting header object into options of SwiftCopyObject

'header': ['Destination-Account:AUTH_name']

This send exactly the same HTTP request to Swift Proxy API as seen in example 2(The one with COPY method)

This give me 404 which is the same result of me sending curl to the API manually. Potentially, this could be the correct way if we can get it to work.

Upload

Following in similar fashion, I added header to SwiftUploadObject to specify where to copy from while using Tenant ID of the destination account.

SwiftUploadObject(source='/container/source_file.txt', object_name='file.txt', options={
'header': [
  'X-Copy-From:/container/source_file.txt',
  'X-Copy-From-Account:AUTH_source'
]})

Doing this get me file not found error: FileNotFoundError: [Errno 2] No such file or directory: '/container/source_file.txt'. This is probably because it try to look into the destination account instead of the source.

Success?

I tried changing source parameter to None. I got Object upload verification failed: md5 mismatch error. However, I can see the file is now in the destination container perfectly. The md5 check does not remove the file from destination container when it fail.

While I could use this hack to make this work, I just don't think it is wise to do it on production.