metric

type Collector interface {
	ConfigSuccess(uint64, bool)

	IncReloadCount()
	IncReloadErrorCount()

	RemoveMetrics(ingresses, endpoints []string)

	SetSSLExpireTime([]*ingress.Server)

	// SetHosts sets the hostnames that are being served by the ingress controller
	SetHosts(sets.String)

	Start()
	Stop()
}

type DummyCollector struct{}