cli: Add an edit verb

[cgwalters]

Depends #106

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cli: Add an edit verb

This interactively replaces the specified state, in a similar way
as kubectl edit.

As of right now, the only supported state to change is the desired
image.

But this will help unblock configmap support.

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[cgwalters]

One thing that probably needs to happen here is we need to implement more of an "api server" in having at least a resourceVersion equivalent to detect conflicts.

Also a random thought: we probably still do want to run as a systemd unit when changes are being made. But we could just always serialize our state into /run/bootc/status.json perhaps, and let clients monitor it for changes via inotify?

[jmarrero]

wdyt of adding an apply option for passing the crd yaml and use edit to do live edits?

[cgwalters]

That's how it works right? You can bootc status > status.yaml then edit or change as desired, then bootc edit status.yaml again. To do things interactively you need to bootc edit - where - means stdin.

[jmarrero]

yeah that is how it works, I was just wondering if it made sense to use the word 'apply' instead for that. As that is how kubectl and oc do it, which would be a more familiar interface I guess.

[jmarrero]

In any case this lgtm. Just wanted to point out the "word" used as it might be more familiar to use bootc apply my.yml

[jmarrero]

lgtm

[cgwalters]

It's a good point! I'm not sure... we could make bootc apply an alias? Or we could always call it apply?

[cgwalters]

To be clear I'm happy to change to apply, the more I think about the more I agree.

[jmarrero]

Well I think we need both if we want the "familiar interface". IIRC apply is just for when we are passing the yaml file. https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#apply

Edit is more manual, expects the user to modify it with an editor:
https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#edit

But Idk, I see that edit also has a -f filename option which I am not sure if it just does the same thing as apply... If it does, then I guess we can ignore apply for now.