Replace time.Now().Sub with time.Since

client/orm/filter/prometheus/filter.go

@@ -85,7 +85,7 @@ func (builder *FilterChainBuilder) report(ctx context.Context, inv *orm.Invocati
 }
 
 func (builder *FilterChainBuilder) reportTxn(ctx context.Context, inv *orm.Invocation) {
-	dur := time.Now().Sub(inv.TxStartTime) / time.Millisecond
+	dur := time.Since(inv.TxStartTime) / time.Millisecond
 	summaryVec.WithLabelValues(inv.Method, inv.TxName,
 		strconv.FormatBool(inv.InsideTx), inv.TxName).Observe(float64(dur))
 }

client/orm/orm_log.go

@@ -41,7 +41,7 @@ func NewLog(out io.Writer) *Log {
 
 func debugLogQueies(alias *alias, operaton, query string, t time.Time, err error, args ...interface{}) {
 	var logMap = make(map[string]interface{})
-	sub := time.Now().Sub(t) / 1e5
+	sub := time.Since(t) / 1e5
 	elsp := float64(int(sub)) / 10.0
 	logMap["cost_time"] = elsp
 	flag := "  OK"