Allow deleting multiple objects at once

[MarcHarriss]

the idea would be to remove all objects in a projects like

gscloud servers power off -all
gscloud storages rm --all
gscloud servers rm --all

there should be a "are you sure" prompt
furthermore gscloud should check if all servers are off, before running

ideas?

[fkr]

I'm not a big fan of these kinds of prompts, since I issue the command, since I know what I want it to do (unix philosophy).
If we do a prompt, there needs to be a -f flag to make sure it does not prompt, if not wanted.

[bkircher]

My stance: just use the shell for looping over all objects, that what it is build for 🙃

But wouldn't fight this if this is getting added directly to gscloud . As long it doesn't get too crazy. Suggestion:

We call it differently then normal commands, e.g. as in Docker CLI spirit we would call this prune:

$ gscloud server prune # or 
$ gscloud storage prune

This could by default remove dangling objects (servers w/o storage, un-assigned IP addresses, storages w/o servers attached).

There we could add a --all flag that would just purge all the things in that project.

$ gscloud server prune --all  # removes all servers, storages, IP addresses

If we do a prompt, there needs to be a -f flag to make sure it does not prompt, if not wanted.

Yes. We have --force flags already in the form of gscloud-storage-set(1): For potentially destructive operations like changing storage capacities:

$ gscloud storage set --capacity 9 3fe7441e-7012-4e0c-9fd9-7a86795fd4fe
Downsizing can destroy your data. Re-run with --force to reduce storage size
from 10 GB to 9 GB

The command would do nothing unless --force is passed

$ gscloud storage set --capacity 9 --force 3fe7441e-7012-4e0c-9fd9-7a86795fd4fe

Now I just killed my server.

Okay with that?