metrics

type Metrics struct {
	Registry *prometheus.Registry

	// VIP state: 0=withdrawn, 1=announced, 2=pessimized
	VIPState *prometheus.GaugeVec
	// VIP transitions counter
	VIPTransitions *prometheus.CounterVec
	// VIP last transition timestamp
	VIPLastTransition *prometheus.GaugeVec
	// VIP priority: AS-path prepend count currently applied (base while
	// announced, base + lower_priority while pessimized)
	VIPPriority *prometheus.GaugeVec
	// VIPLocalAddress is 1 while the VIP address is configured on a local
	// interface; only populated for VIPs with require_local_address.
	VIPLocalAddress *prometheus.GaugeVec

	// Route state: per-peer per-VIP (1=advertised, 0=withdrawn)
	RouteState *prometheus.GaugeVec

	// Check counters by result (success/fail/stale)
	CheckTotal *prometheus.CounterVec
	// Check duration histogram
	CheckDuration *prometheus.HistogramVec
	// Check last result (0=fail, 1=ok)
	CheckLastResult *prometheus.GaugeVec
	// Check timeout exceeded
	CheckTimeoutExceeded *prometheus.CounterVec

	// Per-check-type details, populated only for VIPs with
	// check.detailed_metrics enabled (see ObserveCheckDetails).
	PingRTT            *prometheus.HistogramVec
	PingPacketLoss     *prometheus.GaugeVec
	HTTPResponseStatus *prometheus.GaugeVec
	HTTPTLSCertExpiry  *prometheus.GaugeVec
	DNSRcode           *prometheus.GaugeVec
	DNSAnswers         *prometheus.GaugeVec
	GRPCStatusCode     *prometheus.GaugeVec
	ListenSockets      *prometheus.GaugeVec
	SQLQueryRows       *prometheus.GaugeVec
	SQLQueryDuration   *prometheus.GaugeVec
	SQLQueryPassed     *prometheus.GaugeVec
	KafkaBrokers       *prometheus.GaugeVec
	KafkaLeaderless    *prometheus.GaugeVec

	// Config reload bookkeeping (see internal/reload).
	ConfigReloadTotal         *prometheus.CounterVec
	ConfigLastReloadSuccess   prometheus.Gauge
	ConfigLastReloadTimestamp prometheus.Gauge
	ConfigLoadedTimestamp     prometheus.Gauge
	ConfigFileChanged         prometheus.Gauge
	ConfigReloadPendingVIPs   prometheus.Gauge
}