[On demand Mirroring] How to check if an image is properly mirrored on Zot

[loicalbertin]

Hi 👋

When configured with on demand mirroring, is there a way to just check if an image is cached (all layers presents) in a Zot registry using the REST API without triggering an image synchronization?

From my understanding as soon as we will try to GET or HEAD the image manifest or index, it will trigger a synchronization.

Thanks for your support,
Loïc

[rchincha]

@loicalbertin

From my understanding as soon as we will try to GET or HEAD the image manifest or index, it will trigger a synchronization.

If you have only on-demand sync enabled, then yes.

When configured with on demand mirroring, is there a way to just check if an image is cached (all layers presents) in a Zot registry using the REST API without triggering an image synchronization?

The only real way is to do a HEAD/GET, which will return "not found" until it has landed fully. No webhooks-style callbacks etc if that is what you are looking for. If a sync is already in progress, a new one is not scheduled.