Fix assorted spelling mistakes (#7507)

selfstat/selfstat.go

@@ -17,7 +17,7 @@ import (
 )
 
 var (
-	registry *rgstry
+	registry *Registry
 )
 
 // Stat is an interface for dealing with telegraf statistics collected
@@ -109,12 +109,12 @@ func Metrics() []telegraf.Metric {
 	return metrics
 }
 
-type rgstry struct {
+type Registry struct {
 	stats map[uint64]map[string]Stat
 	mu    sync.Mutex
 }
 
-func (r *rgstry) register(measurement, field string, tags map[string]string) Stat {
+func (r *Registry) register(measurement, field string, tags map[string]string) Stat {
 	r.mu.Lock()
 	defer r.mu.Unlock()
 
@@ -137,7 +137,7 @@ func (r *rgstry) register(measurement, field string, tags map[string]string) Sta
 	return s
 }
 
-func (r *rgstry) registerTiming(measurement, field string, tags map[string]string) Stat {
+func (r *Registry) registerTiming(measurement, field string, tags map[string]string) Stat {
 	r.mu.Lock()
 	defer r.mu.Unlock()
 
@@ -160,7 +160,7 @@ func (r *rgstry) registerTiming(measurement, field string, tags map[string]strin
 	return s
 }
 
-func (r *rgstry) get(key uint64, field string) (Stat, bool) {
+func (r *Registry) get(key uint64, field string) (Stat, bool) {
 	if _, ok := r.stats[key]; !ok {
 		return nil, false
 	}
@@ -172,7 +172,7 @@ func (r *rgstry) get(key uint64, field string) (Stat, bool) {
 	return nil, false
 }
 
-func (r *rgstry) set(key uint64, s Stat) {
+func (r *Registry) set(key uint64, s Stat) {
 	if _, ok := r.stats[key]; !ok {
 		r.stats[key] = make(map[string]Stat)
 	}
@@ -201,7 +201,7 @@ func key(measurement string, tags map[string]string) uint64 {
 }
 
 func init() {
-	registry = &rgstry{
+	registry = &Registry{
 		stats: make(map[uint64]map[string]Stat),
 	}
 }

selfstat/selfstat_test.go

@@ -18,7 +18,7 @@ var (
 
 // testCleanup resets the global registry for test cleanup & unlocks the test lock
 func testCleanup() {
-	registry = &rgstry{
+	registry = &Registry{
 		stats: make(map[uint64]map[string]Stat),
 	}
 	testLock.Unlock()