metrics

var (

	// ControllerPanic is a counter to record the number of panics in the controller.
	ControllerPanic = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Namespace: "tidb_operator",
			Subsystem: "controller",
			Name:      "panic_total",
			Help:      "The total number of panics in the controller",
		}, []string{},
	)

	// AbnormalInstance is 1 when the named condition on the instance is False
	// (abnormal), 0 otherwise. The series stays present while the operator
	// manages the instance and is removed only when the instance is finalized.
	//
	// Use `metric == 1` together with PromQL `for: <duration>` to alert on
	// instances stuck in an abnormal state, e.g. a rolling restart that cannot
	// converge or a pod that is up but cannot serve.
	AbnormalInstance = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Namespace: "tidb_operator",
			Name:      "abnormal_instance",
			Help: "1 when the named condition on the instance is False, 0 otherwise. " +
				"Use `metric == 1` with PromQL `for: <duration>` to alert on stuck state.",
		}, InstanceAbnormalMetricLabels,
	)
)

var InstanceAbnormalMetricLabels = []string{"namespace", "cluster", "component", "group", "instance", "condition"}