scheduler: fix scatter counter name (#8124)

close #8125

Signed-off-by: husharp <jinhao.hu@pingcap.com>

pkg/schedule/filter/counter.go

@@ -188,6 +188,10 @@ func NewCounter(scope string) *Counter {
 	return &Counter{counter: counter, scope: scope}
 }
 
+func (c *Counter) SetScope(scope string) {
+	c.scope = scope
+}
+
 // Add adds the filter counter.
 func (c *Counter) inc(action action, filterType filterType, sourceID uint64, targetID uint64) {
 	if _, ok := c.counter[action][filterType][sourceID]; !ok {

pkg/schedule/schedulers/balance_leader.go

@@ -208,6 +208,13 @@ func (l *balanceLeaderScheduler) ServeHTTP(w http.ResponseWriter, r *http.Reques
 // BalanceLeaderCreateOption is used to create a scheduler with an option.
 type BalanceLeaderCreateOption func(s *balanceLeaderScheduler)
 
+// WithBalanceLeaderFilterCounterName sets the filter counter name for the scheduler.
+func WithBalanceLeaderFilterCounterName(name string) BalanceLeaderCreateOption {
+	return func(s *balanceLeaderScheduler) {
+		s.filterCounter.SetScope(name)
+	}
+}
+
 // WithBalanceLeaderName sets the name for the scheduler.
 func WithBalanceLeaderName(name string) BalanceLeaderCreateOption {
 	return func(s *balanceLeaderScheduler) {

pkg/schedule/schedulers/balance_region.go

@@ -92,6 +92,13 @@ func WithBalanceRegionName(name string) BalanceRegionCreateOption {
 	}
 }
 
+// WithBalanceRegionFilterCounterName sets the filter counter name for the scheduler.
+func WithBalanceRegionFilterCounterName(name string) BalanceRegionCreateOption {
+	return func(s *balanceRegionScheduler) {
+		s.filterCounter.SetScope(name)
+	}
+}
+
 func (s *balanceRegionScheduler) GetName() string {
 	return s.conf.Name
 }

pkg/schedule/schedulers/scatter_range.go

@@ -138,11 +138,13 @@ func newScatterRangeScheduler(opController *operator.Controller, config *scatter
 			opController,
 			&balanceLeaderSchedulerConfig{Ranges: []core.KeyRange{core.NewKeyRange("", "")}},
 			WithBalanceLeaderName("scatter-range-leader"),
+			WithBalanceLeaderFilterCounterName("scatter-range-leader"),
 		),
 		balanceRegion: newBalanceRegionScheduler(
 			opController,
 			&balanceRegionSchedulerConfig{Ranges: []core.KeyRange{core.NewKeyRange("", "")}},
 			WithBalanceRegionName("scatter-range-region"),
+			WithBalanceRegionFilterCounterName("scatter-range-region"),
 		),
 	}
 	return scheduler