This makes us more consistent, since we have other wrappers
like client_patch, client_put, and client_delete.
Wrapping also will facilitate instrumentation of our posting code.
This reverts commit e985b57259.
This commit will break production when we next do a release, because
we haven't done a migration to create Attachment objects for
previously uploaded files.
Now that we have a working S3 mock and an effective way to toggle the
upload backend that Zulip is using, we can re-enable this important
end-to-end test of the Zulip S3 upload backend.
This has no functional changes; we just replace the old hacky
assignment of functions with assignment of the upload backend to a
variable.
I'm not totally happy with this, because we end up having to copy the
type annotations of the three methods 4 times each, but this should
make it a lot easier to test the (non-default-in-tests) S3 backend
using end-to-end tests, which would have caught
13bac1cc2a.
I expect we'll iterate on the interface over time; ideally, I'd like
all the code that checks LOCAL_UPLOADS_DIR to be inside upload.py, and
primarily in these classes.
This commit adds the capability to keep track and remove uploaded
files. Unclaimed attachments are files that have been uploaded to the
server but are not referred in any messages. A management command to
remove old unclaimed files after a week is also included.
Tests for getting the file referred in messages are also included.