cascache.py

Tristan Van Berkom authored 6 years ago and Tristan Van Berkom committed 6 years ago

Use the designated tempdir when creating refs, we expect that temporary
files are not created in the storage directory ever, they should be
only ever created in the designated temporary directory.

This fixes race conditions where utils._get_dir_size() throws an
unhandled exception when attempting to stat the file which inadvertantly
disappears.