Improve name

Author: diogonicoleti

gauges/indexes.go

@@ -12,8 +12,8 @@ type indexScans struct {
 	IdxScan float64 `db:"idx_scan"`
 }
 
-// IndexesScans returns the number of index scans initiated on a index
-func (g *Gauges) IndexesScans() *prometheus.GaugeVec {
+// IndexScans returns the number of index scans initiated on a index
+func (g *Gauges) IndexScans() *prometheus.GaugeVec {
 	var gauge = prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{
 			Name:        "postgresql_indexes_scans_total",
@@ -23,12 +23,12 @@ func (g *Gauges) IndexesScans() *prometheus.GaugeVec {
 		[]string{"table", "index"},
 	)
 
-	const indexesScansQuery = "SELECT relname, indexrelname, idx_scan FROM pg_stat_user_indexes"
+	const indexScansQuery = "SELECT relname, indexrelname, idx_scan FROM pg_stat_user_indexes"
 
 	go func() {
 		for {
 			var indexes []indexScans
-			if err := g.query(indexesScansQuery, &indexes, emptyParams); err == nil {
+			if err := g.query(indexScansQuery, &indexes, emptyParams); err == nil {
 				for _, index := range indexes {
 					gauge.With(prometheus.Labels{
 						"table": index.Table,

gauges/indexes_test.go

@@ -6,14 +6,14 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestIndexesScans(t *testing.T) {
+func TestIndexScans(t *testing.T) {
 	var assert = assert.New(t)
 	db, gauges, close := prepare(t)
 	defer close()
 	dropTestTable := createTestTable(t, db)
 	defer dropTestTable()
 
-	var metrics = evaluate(t, gauges.IndexesScans())
+	var metrics = evaluate(t, gauges.IndexScans())
 	assert.Len(metrics, 1)
 	assertEqual(t, 0, metrics[0])
 	assertNoErrs(t, gauges)

main.go

@@ -86,7 +86,7 @@ func watch(db *sql.DB, reg prometheus.Registerer, name string) {
 	reg.MustRegister(gauges.DeadTuples())
 	reg.MustRegister(gauges.HeapBlocksHit())
 	reg.MustRegister(gauges.HeapBlocksRead())
-	reg.MustRegister(gauges.IndexesScans())
+	reg.MustRegister(gauges.IndexScans())
 	reg.MustRegister(gauges.UnusedIndexes())
 	reg.MustRegister(gauges.IndexBlocksHit())
 	reg.MustRegister(gauges.IndexBlocksRead())