metrics

type Metrics struct {
	// Per-node IP metrics
	AvailableIPs metric.DeletableVec[metric.Gauge]
	UsedIPs      metric.DeletableVec[metric.Gauge]
	NeededIPs    metric.DeletableVec[metric.Gauge]

	// IP and interface allocation counters
	AllocateIpOps        metric.Vec[metric.Counter]
	ReleaseIpOps         metric.Vec[metric.Counter]
	AllocateInterfaceOps metric.Vec[metric.Counter]

	// Interface availability
	InterfaceCandidates   metric.Gauge
	EmptyInterfaceSlots   metric.Gauge
	AvailableIPsPerSubnet metric.Vec[metric.Gauge]

	// Node category counts
	Nodes metric.Vec[metric.Gauge]

	// Resync counter
	ResyncTotal metric.Counter

	// Allocation/release latency histograms
	Allocation             metric.Vec[metric.Observer]
	Release                metric.Vec[metric.Observer]
	BackgroundSyncDuration metric.Vec[metric.Observer]

	// Trigger metrics
	// pool_maintainer is a more generic name, but for backward compatibility
	// of dashboard, keep the metric name deficit_resolver unchanged
	PoolMaintainerQueued       metric.Counter
	PoolMaintainerFolds        metric.Gauge
	PoolMaintainerCallDuration metric.Histogram
	PoolMaintainerLatency      metric.Histogram

	// Trigger metrics – k8s sync
	K8sSyncQueued       metric.Counter
	K8sSyncFolds        metric.Gauge
	K8sSyncCallDuration metric.Histogram
	K8sSyncLatency      metric.Histogram

	// Trigger metrics – resync
	ResyncQueued       metric.Counter
	ResyncFolds        metric.Gauge
	ResyncCallDuration metric.Histogram
	ResyncLatency      metric.Histogram
}