Maintain empty dir structure in AWS S3 after deleting last file

Programming
1

When using the AWS SDK for Java library (used by cognitect-labs/aws-api), I am experiencing an issue with DeleteObject (AWS Documentation).

If I delete the last object in a directory, I expect to be left with an empty directory. However, DeleteObject deletes the directory as well.

(require '[cognitect.aws.client.api :as aws])

;; Copying works fine
(aws/invoke aws/client
            {:op :CopyObject
             :request {:Bucket "bucket"
                       :CopySource "bucket/dirA/f1"
                       :Key "dirB/f1"}})

;; However, deleting removes f1 and dirA (if dirA is empty)
(aws/invoke aws/client
            {:op :DeleteObject
             :request {:Bucket "bucket"
                       :Key "dirA/f1"}})

Is there a way to avoid this behavior?

2

No, there is no way to avoid this behavior. This is the expected behavior of the AWS S3 API. When you delete the last object in a directory, the directory itself is also deleted. If you want to keep the directory, you will need to create a new empty object with the same name as the directory.