possible to have remove_all in atomic metadata operation?

[mstfdkmn]

Feature

Would be possible to have "remove all available metadata on an object without knowing attributes and values" in one shot?

[korydraughn]

Yes, it's possible. We'd have to make a decision about how to expose the functionality. There are three ways to do that.

• Modify the atomic metadata API
• Modify a different, existing API
• Create a new API endpoint

Modifying the atomic metadata API seems to be the most sensible approach, so we can start there.

[mstfdkmn]

Thanks. One of the motivations in requesting this is that the atomic metadata api has currently only two options for the operation (add and remove), it doesn't contain set. So, in case a need to overwrite an existing metadata pair, we need to beforehand know attributes and values. And the other reason will be that with any client which can call the atomic end point we can clear all existing metadata and add new metadata in one call easily.

[korydraughn]

That's correct. The exclusion of set is intended because it could be implemented in terms of add and remove.

We'll look into getting this implemented in an efficient manner.