dist-spec APIs independently allow deletion of blobs and manifests.
Doing the former when in use by an image manifest or index is simply
error-prone. So disallow it.
Fixes issue #1509
Signed-off-by: Petu Eusebiu <peusebiu@cisco.com>
Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>
Co-authored-by: Ramkumar Chinchani <rchincha@cisco.com>
when pushing manifests, zot will validate blobs (layers + config blob) are
present in repo, currently it opens(in case of filesystem storage) or download(
in case of cloud storage) each blob.
fixed that by adding a new method ImageStore.CheckBlobPresence() on storage
to check blobs presence without checking the cache like ImageStore.CheckBlob() method does.
Signed-off-by: Petu Eusebiu <peusebiu@cisco.com>
