metrics

var (
	// LastStatus reports the most recent status of each heartbeat (0 = DOWN, 1 = UP).
	LastStatus = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "heartbeats_heartbeat_last_status",
			Help: "Most recent status of each heartbeat (0 = DOWN, 1 = UP)",
		},
		[]string{"heartbeat"},
	)

	// ReceivedTotal counts the total number of received heartbeats per ID.
	ReceivedTotal = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "heartbeats_heartbeat_received_total",
			Help: "Total number of received heartbeats per ID",
		},
		[]string{"heartbeat"},
	)

	// ReceiverErrorStatus reports the status of the last notification attempt (1 = ERROR, 0 = SUCCESS)
	ReceiverErrorStatus = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "heartbeats_receiver_last_status",
			Help: "Reports the status of the last notification attempt (1 = ERROR, 0 = SUCCESS)",
		},
		[]string{"receiver", "type", "target"},
	)
)