metrics

var (
	// AssignmentsTotal is a prometheus counter metric which holds the total number of shard assignments by the sharder
	// webhook per Ring and GroupResource.
	// It has three labels which refer to the Ring and two labels which refer to the object's GroupResource.
	AssignmentsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
		Name: "controller_sharding_assignments_total",
		Help: "Total number of shard assignments by the sharder webhook per Ring and GroupResource",
	}, []string{"ringKind", "ringNamespace", "ringName", "group", "resource"})

	// MovementsTotal is a prometheus counter metric which holds the total number of shard movements triggered by the
	// sharder controller per Ring and GroupResource.
	// It has three labels which refer to the Ring and two labels which refer to the object's GroupResource.
	MovementsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
		Name: "controller_sharding_movements_total",
		Help: "Total number of shard movements triggered by the sharder controller per Ring and GroupResource",
	}, []string{"ringKind", "ringNamespace", "ringName", "group", "resource"})

	// DrainsTotal is a prometheus counter metric which holds the total number of shard drains triggered by the sharder
	// controller per Ring and GroupResource.
	// It has three labels which refer to the Ring and two labels which refer to the object's GroupResource.
	DrainsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
		Name: "controller_sharding_drains_total",
		Help: "Total number of shard drains triggered by the sharder controller per Ring and GroupResource",
	}, []string{"ringKind", "ringNamespace", "ringName", "group", "resource"})

	// RingCalculationsTotal is a prometheus counter metric which holds the total
	// number of shard ring calculations per ring kind.
	// It has three labels which refer to the ring's kind, name, and namespace.
	RingCalculationsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
		Name: "controller_sharding_ring_calculations_total",
		Help: "Total number of shard ring calculations per ring kind",
	}, []string{"kind", "namespace", "name"})
)