add metrics to dbStore

state/metrics.gen.go

@@ -34,13 +34,22 @@ func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
 			Name:      "validator_set_updates",
 			Help:      "ValidatorSetUpdates is the total number of times the application has udated the validator set since process start.",
 		}, labels).With(labelsAndValues...),
+		StoreAccessDurationSeconds: prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
+			Namespace: namespace,
+			Subsystem: MetricsSubsystem,
+			Name:      "store_access_duration_seconds",
+			Help:      "The duration of accesses to the state store labeled by which method was called on the store.",
+
+			Buckets: stdprometheus.ExponentialBuckets(0.01, 2, 5),
+		}, append(labels, "method")).With(labelsAndValues...),
 	}
 }
 
 func NopMetrics() *Metrics {
 	return &Metrics{
-		BlockProcessingTime:   discard.NewHistogram(),
-		ConsensusParamUpdates: discard.NewCounter(),
-		ValidatorSetUpdates:   discard.NewCounter(),
+		BlockProcessingTime:        discard.NewHistogram(),
+		ConsensusParamUpdates:      discard.NewCounter(),
+		ValidatorSetUpdates:        discard.NewCounter(),
+		StoreAccessDurationSeconds: discard.NewHistogram(),
 	}
 }

state/metrics.go

@@ -24,4 +24,8 @@ type Metrics struct {
 	// ValidatorSetUpdates is the total number of times the application has
 	// udated the validator set since process start.
 	ValidatorSetUpdates metrics.Counter
+
+	// The duration of accesses to the state store labeled by which method
+	// was called on the store.
+	StoreAccessDurationSeconds metrics.Histogram `metrics_buckettype:"exp" metrics_bucketsizes:"0.01, 2, 5" metrics_labels:"method"`
 }

state/store.go

@@ -80,6 +80,8 @@ type Store interface {
 type dbStore struct {
 	db dbm.DB
 
+	metrics *Metrics
+
 	StoreOptions
 }
 
@@ -95,7 +97,10 @@ var _ Store = (*dbStore)(nil)
 
 // NewStore creates the dbStore of the state pkg.
 func NewStore(db dbm.DB, options StoreOptions) Store {
-	return dbStore{db, options}
+	return dbStore{
+		db:           db,
+		StoreOptions: options,
+	}
 }
 
 // LoadStateFromDBOrGenesisFile loads the most recent state from the database,