[knot-dns-users] Monitoring for "waiting for DS submission"

I'm trying to find a way to poll for any zones where knot is currently waiting on DS submission to the parent. I'm aware of the structured logging sent to systemd-journald but I see this as not particularly useful for monitoring, as the event could be missed by a dead daemon, bug in code, etc. I'd much prefer to be able to actively monitor states by polling. It looks like the only way I can do that right now is to run `keymgr list` and analyze the output. If I'm reading the documentation correctly, all I need to look for is a key that is `ksk=yes`, `ready != 0`, and `active = 0`. Does that seem correct? Am I missing something simpler? :)