system

type Backend interface {
	SystemInfo(context.Context) (*system.Info, error)
	SystemVersion(context.Context) (types.Version, error)
	SystemDiskUsage(ctx context.Context, opts DiskUsageOptions) (*types.DiskUsage, error)
	SubscribeToEvents(since, until time.Time, ef filters.Args) ([]events.Message, chan interface{})
	UnsubscribeFromEvents(chan interface{})
	AuthenticateToRegistry(ctx context.Context, authConfig *registry.AuthConfig) (string, string, error)
}

type ClusterBackend interface {
	Info(context.Context) swarm.Info
}

type DiskUsageOptions struct {
	// Containers controls whether container disk usage should be computed.
	Containers bool

	// Images controls whether image disk usage should be computed.
	Images bool

	// Volumes controls whether volume disk usage should be computed.
	Volumes bool
}

type StatusProvider interface {
	Status() string
}