[#424] morphcache: Use labels for method duration

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/metrics/morphcache.go

@@ -1,7 +1,6 @@
 package metrics
 
 import (
-	"fmt"
 	"strconv"
 	"time"
 
@@ -12,66 +11,35 @@ import (
 const (
 	mcSubsystem = "morphcache"
 	mcSuccess   = "success"
+	mcMethod    = "method"
 )
 
 type MorphCacheMetrics interface {
-	AddNNSContractHashDuration(success bool, d time.Duration)
-
-	AddGroupKeyDuration(success bool, d time.Duration)
-
-	AddTxHeightDuration(success bool, d time.Duration)
+	AddMethodDuration(method string, success bool, d time.Duration)
 }
 
 type morphCacheMetrics struct {
-	// Duration of processing get nns contract hash request
-	nnsContractHashDuration *prometheus.HistogramVec
-
-	// Duration of processing get group key request
-	groupKeyDuration *prometheus.HistogramVec
-
-	// Duration of processing get tx height request
-	txHeightDuration *prometheus.HistogramVec
+	methodDuration *prometheus.HistogramVec
 }
 
 var _ MorphCacheMetrics = (*morphCacheMetrics)(nil)
 
 func newMorphCacheMetrics() *morphCacheMetrics {
 	return &morphCacheMetrics{
-		nnsContractHashDuration: newMCMethodDurationCounter("nns_contract_hash"),
-		groupKeyDuration:        newMCMethodDurationCounter("group_key"),
-		txHeightDuration:        newMCMethodDurationCounter("tx_height"),
+		methodDuration: metrics.NewHistogramVec(prometheus.HistogramOpts{
+			Namespace: namespace,
+			Subsystem: mcSubsystem,
+			Name:      "request_duration_seconds",
+			Help:      "Morph cache request process duration",
+		}, []string{mcSuccess, mcMethod}),
 	}
 }
 
-func (m *morphCacheMetrics) AddNNSContractHashDuration(success bool, d time.Duration) {
-	m.nnsContractHashDuration.With(
+func (m *morphCacheMetrics) AddMethodDuration(method string, success bool, d time.Duration) {
+	m.methodDuration.With(
 		prometheus.Labels{
 			mcSuccess: strconv.FormatBool(success),
+			mcMethod:  method,
 		},
-	).Observe(float64(d))
-}
-
-func (m *morphCacheMetrics) AddGroupKeyDuration(success bool, d time.Duration) {
-	m.groupKeyDuration.With(
-		prometheus.Labels{
-			mcSuccess: strconv.FormatBool(success),
-		},
-	).Observe(float64(d))
-}
-
-func (m *morphCacheMetrics) AddTxHeightDuration(success bool, d time.Duration) {
-	m.txHeightDuration.With(
-		prometheus.Labels{
-			mcSuccess: strconv.FormatBool(success),
-		},
-	).Observe(float64(d))
-}
-
-func newMCMethodDurationCounter(method string) *prometheus.HistogramVec {
-	return metrics.NewHistogramVec(prometheus.HistogramOpts{
-		Namespace: namespace,
-		Subsystem: mcSubsystem,
-		Name:      fmt.Sprintf("%s_req_duration_seconds", method),
-		Help:      fmt.Sprintf("Accumulated %s request process duration", method),
-	}, []string{mcSuccess})
+	).Observe(d.Seconds())
 }

pkg/morph/client/nns.go

@@ -86,7 +86,7 @@ func (c *Client) NNSHash() (util.Uint160, error) {
 	startedAt := time.Now()
 
 	defer func() {
-		c.cache.metrics.AddNNSContractHashDuration(success, time.Since(startedAt))
+		c.cache.metrics.AddMethodDuration("NNSContractHash", success, time.Since(startedAt))
 	}()
 
 	nnsHash := c.cache.nns()
@@ -233,7 +233,7 @@ func (c *Client) contractGroupKey() (*keys.PublicKey, error) {
 	success := false
 	startedAt := time.Now()
 	defer func() {
-		c.cache.metrics.AddGroupKeyDuration(success, time.Since(startedAt))
+		c.cache.metrics.AddMethodDuration("GroupKey", success, time.Since(startedAt))
 	}()
 
 	if gKey := c.cache.groupKey(); gKey != nil {

pkg/morph/client/notary.go

@@ -800,7 +800,7 @@ func (c *Client) getTransactionHeight(h util.Uint256) (uint32, error) {
 	success := false
 	startedAt := time.Now()
 	defer func() {
-		c.cache.metrics.AddTxHeightDuration(success, time.Since(startedAt))
+		c.cache.metrics.AddMethodDuration("TxHeight", success, time.Since(startedAt))
 	}()
 
 	if rh, ok := c.cache.txHeights.Get(h); ok {