actually, wait, PATCHing "running" is cheating. You've got a RESTful Zeno's paradox where you go from stopped to running with no time in between; where's the "starting" state? What starts immediately? And in what sense can it then restart? How does restarting alter its state?
Alright, I have a ReST API which exposes an artifact whose state is "stopped". To start it in a ReSTful way, naturally I PATCH the artifact with a new state, "running". But what if I now want to *restart* it in a ReSTful way?
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For the sake of argument, say the HTTP request doesn't return until the thing is started
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Admit to yourself that REST is insanity which makes error types straddle layer boundaries, and give up? Though the answer to anything RESTFUL is eventually: "POST" (to "create" a request to perform an action), followed by "GET" to verify the status of that action.
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Give up and POST
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I would just make start and restart endpoints that accept POSTs.
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there's no rule that resources can't undergo state changes "behind the scenes". make a "restarting" state, PATCH that, let some other actor (the thing itself, a liveness probe, whatever) switch it to "running" when it comes back up
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POST /artifact/starts?
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Ansible’s `service` module, which isn’t HTTP but faces a similar problem, uses a state named “restarted” to do that.
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define "restarting" to be another valid state, and PATCH that.
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