ctrmanager

type Config struct {
	// ExternalSocket is the --containerd <socket> / FUNCD_CONTAINERD_SOCKET value. "" ⇒
	// funcd starts + supervises its own private containerd.
	ExternalSocket string
	// DataRoot is the private containerd state dir (e.g. /var/lib/funcd/containerd) — used
	// only on the private-managed path.
	DataRoot string
	// ImageOverride maps a runtime to a registry ref (--image runtime=ref) that ImageFor yields in
	// place of the curated image and the containerd driver pulls (Pullable).
	ImageOverride map[string]string
}

type Manager interface {
	// Ensure returns the containerd socket the driver should dial: it starts + supervises a
	// private containerd (default) and imports the embedded images, OR returns ExternalSocket
	// as-is when --containerd is set. crun is laid down so the runc-v2 shim finds it. ctx bounds the
	// start-up only: a private containerd runs until Close.
	Ensure(ctx context.Context) (socket string, err error)
	// Exited is closed once the private containerd has exited, so the driver's Close need not dial its socket to find
	// out; nil for the external-socket path and before Ensure started one.
	Exited() <-chan struct{}
	// Close stops a supervised private containerd; a no-op for the external-socket path.
	Close() error
}