node

var (
	OVSFlows = prometheus.NewGauge(
		prometheus.GaugeOpts{
			Namespace: SDNNamespace,
			Subsystem: SDNSubsystem,
			Name:      OVSFlowsKey,
			Help:      "Number of Open vSwitch flows",
		},
	)

	ARPCacheAvailableEntries = prometheus.NewGauge(
		prometheus.GaugeOpts{
			Namespace: SDNNamespace,
			Subsystem: SDNSubsystem,
			Name:      ARPCacheAvailableEntriesKey,
			Help:      "Number of available entries in the ARP cache",
		},
	)

	PodIPs = prometheus.NewGauge(
		prometheus.GaugeOpts{
			Namespace: SDNNamespace,
			Subsystem: SDNSubsystem,
			Name:      PodIPsKey,
			Help:      "Number of allocated pod IPs",
		},
	)

	PodOperationsErrors = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Namespace: SDNNamespace,
			Subsystem: SDNSubsystem,
			Name:      PodOperationsErrorsKey,
			Help:      "Cumulative number of SDN operation errors by operation type",
		},
		[]string{"operation_type"},
	)

	PodOperationsLatency = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Namespace: SDNNamespace,
			Subsystem: SDNSubsystem,
			Name:      PodOperationsLatencyKey,
			Help:      "Latency in microseconds of SDN operations by operation type",
		},
		[]string{"operation_type"},
	)

	VnidNotFoundErrors = prometheus.NewCounter(
		prometheus.CounterOpts{
			Namespace: SDNNamespace,
			Subsystem: SDNSubsystem,
			Name:      VnidNotFoundErrorsKey,
			Help:      "Number of VNID-not-found errors",
		},
	)
)

var (
	ErrorNetworkInterfaceNotFound = fmt.Errorf("could not find network interface")
)