Add price update counter for price-feeder (#690)

Author: BrandonWeng

utils/metrics/metrics_util.go

@@ -149,3 +149,15 @@ func SetThroughputMetric(metricName string, value float32) {
 		"sei", "throughput", metricName,
 	)
 }
+
+// Measures number of times a denom's price is updated
+// Metric Name:
+//
+//	sei_oracle_price_update_count
+func IncrPriceUpdateDenom(denom string) {
+	telemetry.IncrCounterWithLabels(
+		[]string{"sei", "oracle", "price", "update"},
+		1,
+		[]metrics.Label{telemetry.NewLabel("denom", denom)},
+	)
+}

x/oracle/abci.go

@@ -4,6 +4,7 @@ import (
 	"sort"
 	"time"
 
+	"github.com/sei-protocol/sei-chain/utils/metrics"
 	"github.com/sei-protocol/sei-chain/x/oracle/keeper"
 	"github.com/sei-protocol/sei-chain/x/oracle/types"
 	"github.com/sei-protocol/sei-chain/x/oracle/utils"
@@ -90,6 +91,7 @@ func MidBlocker(ctx sdk.Context, k keeper.Keeper) {
 				}
 
 				// Set the exchange rate, emit ABCI event
+				metrics.IncrPriceUpdateDenom(denom)
 				k.SetBaseExchangeRateWithEvent(ctx, denom, exchangeRate)
 			}
 		}