feat: PRT: Add subscription metrics (#1695)

* add subscription metrics * fix metric typo * fix pr * fix typo * fix lint * fix tests * Add "Connection refused" to allowedErrorsDuringEmergencyMode * remove consumerSessionManager from consumer ws sub * add back session t ws sub * fix pr * fix lint * fix lint * change disconnect reason map * fix pr * fix pr --------- Co-authored-by: leon mandel <[email protected]> Co-authored-by: Elad Gildnur <[email protected]> Co-authored-by: Elad Gildnur <[email protected]> Co-authored-by: Ran Mishael <[email protected]>
lavanet · Sep 25, 2024 · bdb5f04 · bdb5f04
1 parent a5206e7
commit bdb5f04
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Showing 5 changed files with 97 additions and 19 deletions.
diff --git a/protocol/chainlib/consumer_websocket_manager.go b/protocol/chainlib/consumer_websocket_manager.go
@@ -160,7 +160,7 @@ func (cwm *ConsumerWebsocketManager) ListenToMessages() {
 			continue
 		}
 
-		// check whether its a normal relay / unsubscribe / unsubscribe_all otherwise its a subscription flow.
+		// check whether it's a normal relay / unsubscribe / unsubscribe_all otherwise its a subscription flow.
 		if !IsFunctionTagOfType(protocolMessage, spectypes.FUNCTION_TAG_SUBSCRIBE) {
 			if IsFunctionTagOfType(protocolMessage, spectypes.FUNCTION_TAG_UNSUBSCRIBE) {
 				err := cwm.consumerWsSubscriptionManager.Unsubscribe(webSocketCtx, protocolMessage, dappID, userIp, cwm.WebsocketConnectionUID, metricsData)

diff --git a/protocol/chainlib/consumer_ws_subscription_manager.go b/protocol/chainlib/consumer_ws_subscription_manager.go
@@ -56,6 +56,7 @@ type ConsumerWSSubscriptionManager struct {
 	activeSubscriptionProvidersStorage *lavasession.ActiveSubscriptionProvidersStorage
 	currentlyPendingSubscriptions      map[string]*pendingSubscriptionsBroadcastManager
 	lock                               sync.RWMutex
+	consumerMetricsManager             *metrics.ConsumerMetricsManager
 }
 
 func NewConsumerWSSubscriptionManager(
@@ -65,6 +66,7 @@ func NewConsumerWSSubscriptionManager(
 	connectionType string,
 	chainParser ChainParser,
 	activeSubscriptionProvidersStorage *lavasession.ActiveSubscriptionProvidersStorage,
+	consumerMetricsManager *metrics.ConsumerMetricsManager,
 ) *ConsumerWSSubscriptionManager {
 	return &ConsumerWSSubscriptionManager{
 		connectedDapps:                     make(map[string]map[string]*common.SafeChannelSender[*pairingtypes.RelayReply]),
@@ -76,6 +78,7 @@ func NewConsumerWSSubscriptionManager(
 		relaySender:                        relaySender,
 		connectionType:                     connectionType,
 		activeSubscriptionProvidersStorage: activeSubscriptionProvidersStorage,
+		consumerMetricsManager:             consumerMetricsManager,
 	}
 }
 
@@ -216,6 +219,7 @@ func (cwsm *ConsumerWSSubscriptionManager) StartSubscription(
 
 	// called after send relay failure or parsing failure afterwards
 	onSubscriptionFailure := func() {
+		go cwsm.consumerMetricsManager.SetFailedWsSubscriptionRequestMetric(metricsData.ChainID, metricsData.APIType)
 		cwsm.failedPendingSubscription(hashedParams)
 		closeWebsocketRepliesChannel()
 	}
@@ -255,6 +259,7 @@ func (cwsm *ConsumerWSSubscriptionManager) StartSubscription(
 	// Validated there are no active subscriptions that we can use.
 	firstSubscriptionReply, returnWebsocketRepliesChan := cwsm.checkForActiveSubscriptionWithLock(webSocketCtx, hashedParams, protocolMessage, dappKey, websocketRepliesSafeChannelSender, closeWebsocketRepliesChannel)
 	if firstSubscriptionReply != nil {
+		go cwsm.consumerMetricsManager.SetDuplicatedWsSubscriptionRequestMetric(metricsData.ChainID, metricsData.APIType)
 		if returnWebsocketRepliesChan {
 			return firstSubscriptionReply, websocketRepliesChan, nil
 		}
@@ -412,7 +417,7 @@ func (cwsm *ConsumerWSSubscriptionManager) StartSubscription(
 	cwsm.successfulPendingSubscription(hashedParams)
 	// Need to be run once for subscription
 	go cwsm.listenForSubscriptionMessages(webSocketCtx, dappID, consumerIp, replyServer, hashedParams, providerAddr, metricsData, closeSubscriptionChan)
-
+	go cwsm.consumerMetricsManager.SetWsSubscriptionRequestMetric(metricsData.ChainID, metricsData.APIType)
 	return &reply, websocketRepliesChan, nil
 }
 
@@ -524,19 +529,22 @@ func (cwsm *ConsumerWSSubscriptionManager) listenForSubscriptionMessages(
 				utils.LogAttr("GUID", webSocketCtx),
 				utils.LogAttr("hashedParams", utils.ToHexString(hashedParams)),
 			)
+			go cwsm.consumerMetricsManager.SetWsSubscriptioDisconnectRequestMetric(metricsData.ChainID, metricsData.APIType, metrics.WsDisconnectionReasonUser)
 			return
 		case <-replyServer.Context().Done():
 			utils.LavaFormatTrace("reply server context canceled",
 				utils.LogAttr("GUID", webSocketCtx),
 				utils.LogAttr("hashedParams", utils.ToHexString(hashedParams)),
 			)
+			go cwsm.consumerMetricsManager.SetWsSubscriptioDisconnectRequestMetric(metricsData.ChainID, metricsData.APIType, metrics.WsDisconnectionReasonConsumer)
 			return
 		default:
 			var reply pairingtypes.RelayReply
 			err := replyServer.RecvMsg(&reply)
 			if err != nil {
 				// The connection was closed by the provider
 				utils.LavaFormatTrace("error reading from subscription stream", utils.LogAttr("original error", err.Error()))
+				go cwsm.consumerMetricsManager.SetWsSubscriptioDisconnectRequestMetric(metricsData.ChainID, metricsData.APIType, metrics.WsDisconnectionReasonProvider)
 				return
 			}
 			err = cwsm.handleIncomingSubscriptionNodeMessage(hashedParams, &reply, providerAddr)
@@ -545,6 +553,7 @@ func (cwsm *ConsumerWSSubscriptionManager) listenForSubscriptionMessages(
 					utils.LogAttr("hashedParams", hashedParams),
 					utils.LogAttr("reply", reply),
 				)
+				go cwsm.consumerMetricsManager.SetFailedWsSubscriptionRequestMetric(metricsData.ChainID, metricsData.APIType)
 				return
 			}
 		}

diff --git a/protocol/chainlib/consumer_ws_subscription_manager_test.go b/protocol/chainlib/consumer_ws_subscription_manager_test.go
@@ -27,6 +27,9 @@ import (
 const (
 	numberOfParallelSubscriptions = 10
 	uniqueId                      = "1234"
+	projectHashTest               = "test_projecthash"
+	chainIdTest                   = "test_chainId"
+	apiTypeTest                   = "test_apiType"
 )
 
 func TestConsumerWSSubscriptionManagerParallelSubscriptionsOnSameDappIdIp(t *testing.T) {
@@ -51,7 +54,7 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptionsOnSameDappIdIp(t *tes
 			subscriptionFirstReply2:  []byte(`{"jsonrpc":"2.0","id":4,"result":{}}`),
 		},
 	}
-
+	metricsData := metrics.NewRelayAnalytics(projectHashTest, chainIdTest, apiTypeTest)
 	for _, play := range playbook {
 		t.Run(play.name, func(t *testing.T) {
 			ts := SetupForTests(t, 1, play.specId, "../../")
@@ -136,7 +139,7 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptionsOnSameDappIdIp(t *tes
 			consumerSessionManager := CreateConsumerSessionManager(play.specId, play.apiInterface, ts.Consumer.Addr.String())
 
 			// Create a new ConsumerWSSubscriptionManager
-			manager := NewConsumerWSSubscriptionManager(consumerSessionManager, relaySender, nil, play.connectionType, chainParser, lavasession.NewActiveSubscriptionProvidersStorage())
+			manager := NewConsumerWSSubscriptionManager(consumerSessionManager, relaySender, nil, play.connectionType, chainParser, lavasession.NewActiveSubscriptionProvidersStorage(), nil)
 			uniqueIdentifiers := make([]string, numberOfParallelSubscriptions)
 			wg := sync.WaitGroup{}
 			wg.Add(numberOfParallelSubscriptions)
@@ -151,7 +154,7 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptionsOnSameDappIdIp(t *tes
 					var repliesChan <-chan *pairingtypes.RelayReply
 					var firstReply *pairingtypes.RelayReply
 
-					firstReply, repliesChan, err = manager.StartSubscription(ctx, protocolMessage1, dapp, ip, uniqueIdentifiers[index], nil)
+					firstReply, repliesChan, err = manager.StartSubscription(ctx, protocolMessage1, dapp, ip, uniqueIdentifiers[index], metricsData)
 					go func() {
 						for subMsg := range repliesChan {
 							// utils.LavaFormatInfo("got reply for index", utils.LogAttr("index", index))
@@ -169,15 +172,15 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptionsOnSameDappIdIp(t *tes
 			// now we have numberOfParallelSubscriptions subscriptions currently running
 			require.Len(t, manager.connectedDapps, numberOfParallelSubscriptions)
 			// remove one
-			err = manager.Unsubscribe(ts.Ctx, protocolMessage1, dapp, ip, uniqueIdentifiers[0], nil)
+			err = manager.Unsubscribe(ts.Ctx, protocolMessage1, dapp, ip, uniqueIdentifiers[0], metricsData)
 			require.NoError(t, err)
 			// now we have numberOfParallelSubscriptions - 1
 			require.Len(t, manager.connectedDapps, numberOfParallelSubscriptions-1)
 			// check we still have an active subscription.
 			require.Len(t, manager.activeSubscriptions, 1)
 
 			// same flow for unsubscribe all
-			err = manager.UnsubscribeAll(ts.Ctx, dapp, ip, uniqueIdentifiers[1], nil)
+			err = manager.UnsubscribeAll(ts.Ctx, dapp, ip, uniqueIdentifiers[1], metricsData)
 			require.NoError(t, err)
 			// now we have numberOfParallelSubscriptions - 2
 			require.Len(t, manager.connectedDapps, numberOfParallelSubscriptions-2)
@@ -209,7 +212,6 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptions(t *testing.T) {
 			subscriptionFirstReply2:  []byte(`{"jsonrpc":"2.0","id":4,"result":{}}`),
 		},
 	}
-
 	for _, play := range playbook {
 		t.Run(play.name, func(t *testing.T) {
 			ts := SetupForTests(t, 1, play.specId, "../../")
@@ -291,9 +293,9 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptions(t *testing.T) {
 				Times(1) // Should call SendParsedRelay, because it is the first time we subscribe
 
 			consumerSessionManager := CreateConsumerSessionManager(play.specId, play.apiInterface, ts.Consumer.Addr.String())
-
+			metricsData := metrics.NewRelayAnalytics(projectHashTest, chainIdTest, apiTypeTest)
 			// Create a new ConsumerWSSubscriptionManager
-			manager := NewConsumerWSSubscriptionManager(consumerSessionManager, relaySender, nil, play.connectionType, chainParser, lavasession.NewActiveSubscriptionProvidersStorage())
+			manager := NewConsumerWSSubscriptionManager(consumerSessionManager, relaySender, nil, play.connectionType, chainParser, lavasession.NewActiveSubscriptionProvidersStorage(), nil)
 
 			wg := sync.WaitGroup{}
 			wg.Add(10)
@@ -305,7 +307,7 @@ func TestConsumerWSSubscriptionManagerParallelSubscriptions(t *testing.T) {
 					ctx := utils.WithUniqueIdentifier(ts.Ctx, utils.GenerateUniqueIdentifier())
 					var repliesChan <-chan *pairingtypes.RelayReply
 					var firstReply *pairingtypes.RelayReply
-					firstReply, repliesChan, err = manager.StartSubscription(ctx, protocolMessage1, dapp+strconv.Itoa(index), ts.Consumer.Addr.String(), uniqueId, nil)
+					firstReply, repliesChan, err = manager.StartSubscription(ctx, protocolMessage1, dapp+strconv.Itoa(index), ts.Consumer.Addr.String(), uniqueId, metricsData)
 					go func() {
 						for subMsg := range repliesChan {
 							require.Equal(t, string(play.subscriptionFirstReply1), string(subMsg.Data))
@@ -379,6 +381,7 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 			unsubscribeMessage2:      []byte(`{"jsonrpc":"2.0","method":"eth_unsubscribe","params":["0x2134567890"],"id":1}`),
 		},
 	}
+	metricsData := metrics.NewRelayAnalytics(projectHashTest, chainIdTest, apiTypeTest)
 
 	for _, play := range playbook {
 		t.Run(play.name, func(t *testing.T) {
@@ -538,12 +541,12 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 			consumerSessionManager := CreateConsumerSessionManager(play.specId, play.apiInterface, ts.Consumer.Addr.String())
 
 			// Create a new ConsumerWSSubscriptionManager
-			manager := NewConsumerWSSubscriptionManager(consumerSessionManager, relaySender, nil, play.connectionType, chainParser, lavasession.NewActiveSubscriptionProvidersStorage())
+			manager := NewConsumerWSSubscriptionManager(consumerSessionManager, relaySender, nil, play.connectionType, chainParser, lavasession.NewActiveSubscriptionProvidersStorage(), nil)
 
 			// Start a new subscription for the first time, called SendParsedRelay once
 			ctx = utils.WithUniqueIdentifier(ctx, utils.GenerateUniqueIdentifier())
 
-			firstReply, repliesChan1, err := manager.StartSubscription(ctx, subscribeProtocolMessage1, dapp1, ts.Consumer.Addr.String(), uniqueId, nil)
+			firstReply, repliesChan1, err := manager.StartSubscription(ctx, subscribeProtocolMessage1, dapp1, ts.Consumer.Addr.String(), uniqueId, metricsData)
 			assert.NoError(t, err)
 			unsubscribeMessageWg.Add(1)
 			assert.Equal(t, string(play.subscriptionFirstReply1), string(firstReply.Data))
@@ -559,7 +562,7 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 
 			// Start a subscription again, same params, same dappKey, should not call SendParsedRelay
 			ctx = utils.WithUniqueIdentifier(ctx, utils.GenerateUniqueIdentifier())
-			firstReply, repliesChan2, err := manager.StartSubscription(ctx, subscribeProtocolMessage1, dapp1, ts.Consumer.Addr.String(), uniqueId, nil)
+			firstReply, repliesChan2, err := manager.StartSubscription(ctx, subscribeProtocolMessage1, dapp1, ts.Consumer.Addr.String(), uniqueId, metricsData)
 			assert.NoError(t, err)
 			assert.Equal(t, string(play.subscriptionFirstReply1), string(firstReply.Data))
 			assert.Nil(t, repliesChan2) // Same subscription, same dappKey, no need for a new channel
@@ -568,7 +571,7 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 
 			// Start a subscription again, same params, different dappKey, should not call SendParsedRelay
 			ctx = utils.WithUniqueIdentifier(ctx, utils.GenerateUniqueIdentifier())
-			firstReply, repliesChan3, err := manager.StartSubscription(ctx, subscribeProtocolMessage1, dapp2, ts.Consumer.Addr.String(), uniqueId, nil)
+			firstReply, repliesChan3, err := manager.StartSubscription(ctx, subscribeProtocolMessage1, dapp2, ts.Consumer.Addr.String(), uniqueId, metricsData)
 			assert.NoError(t, err)
 			assert.Equal(t, string(play.subscriptionFirstReply1), string(firstReply.Data))
 			assert.NotNil(t, repliesChan3) // Same subscription, but different dappKey, so will create new channel
@@ -652,7 +655,7 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 			// Start a subscription again, different params, same dappKey, should call SendParsedRelay
 			ctx = utils.WithUniqueIdentifier(ctx, utils.GenerateUniqueIdentifier())
 
-			firstReply, repliesChan4, err := manager.StartSubscription(ctx, subscribeProtocolMessage2, dapp1, ts.Consumer.Addr.String(), uniqueId, nil)
+			firstReply, repliesChan4, err := manager.StartSubscription(ctx, subscribeProtocolMessage2, dapp1, ts.Consumer.Addr.String(), uniqueId, metricsData)
 			assert.NoError(t, err)
 			unsubscribeMessageWg.Add(1)
 			assert.Equal(t, string(play.subscriptionFirstReply2), string(firstReply.Data))
@@ -671,7 +674,7 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 
 			ctx = utils.WithUniqueIdentifier(ctx, utils.GenerateUniqueIdentifier())
 			unsubProtocolMessage := NewProtocolMessage(unsubscribeChainMessage1, nil, relayResult1.Request.RelayData, dapp2, ts.Consumer.Addr.String())
-			err = manager.Unsubscribe(ctx, unsubProtocolMessage, dapp2, ts.Consumer.Addr.String(), uniqueId, nil)
+			err = manager.Unsubscribe(ctx, unsubProtocolMessage, dapp2, ts.Consumer.Addr.String(), uniqueId, metricsData)
 			require.NoError(t, err)
 
 			listenForExpectedMessages(ctx, repliesChan1, string(play.subscriptionFirstReply1))
@@ -697,7 +700,7 @@ func TestConsumerWSSubscriptionManager(t *testing.T) {
 				Times(2) // Should call SendParsedRelay, because it unsubscribed
 
 			ctx = utils.WithUniqueIdentifier(ctx, utils.GenerateUniqueIdentifier())
-			err = manager.UnsubscribeAll(ctx, dapp1, ts.Consumer.Addr.String(), uniqueId, nil)
+			err = manager.UnsubscribeAll(ctx, dapp1, ts.Consumer.Addr.String(), uniqueId, metricsData)
 			require.NoError(t, err)
 
 			expectNoMoreMessages(ctx, repliesChan1)

diff --git a/protocol/metrics/metrics_consumer_manager.go b/protocol/metrics/metrics_consumer_manager.go
@@ -13,6 +13,12 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
+const (
+	WsDisconnectionReasonConsumer = "consumer-disconnect"
+	WsDisconnectionReasonProvider = "provider-disconnect"
+	WsDisconnectionReasonUser     = "user-disconnect"
+)
+
 type LatencyTracker struct {
 	AverageLatency time.Duration // in nano seconds (time.Since result)
 	TotalRequests  int
@@ -34,6 +40,10 @@ type ConsumerMetricsManager struct {
 	totalNodeErroredRecoveryAttemptsMetric      *prometheus.CounterVec
 	totalRelaysSentToProvidersMetric            *prometheus.CounterVec
 	totalRelaysSentByNewBatchTickerMetric       *prometheus.CounterVec
+	totalWsSubscriptionRequestsMetric           *prometheus.CounterVec
+	totalFailedWsSubscriptionRequestsMetric     *prometheus.CounterVec
+	totalWsSubscriptionDissconnectMetric        *prometheus.CounterVec
+	totalDuplicatedWsSubscriptionRequestsMetric *prometheus.CounterVec
 	blockMetric                                 *prometheus.GaugeVec
 	latencyMetric                               *prometheus.GaugeVec
 	qosMetric                                   *prometheus.GaugeVec
@@ -88,6 +98,26 @@ func NewConsumerMetricsManager(options ConsumerMetricsManagerOptions) *ConsumerM
 		Help: "The total number of errors encountered by the consumer over time.",
 	}, []string{"spec", "apiInterface"})
 
+	totalWsSubscriptionRequestsMetric := prometheus.NewCounterVec(prometheus.CounterOpts{
+		Name: "lava_consumer_total_ws_subscription_requests",
+		Help: "The total number of websocket subscription requests over time per chain id per api interface.",
+	}, []string{"spec", "apiInterface"})
+
+	totalFailedWsSubscriptionRequestsMetric := prometheus.NewCounterVec(prometheus.CounterOpts{
+		Name: "lava_consumer_total_failed_ws_subscription_requests",
+		Help: "The total number of failed websocket subscription requests over time per chain id per api interface.",
+	}, []string{"spec", "apiInterface"})
+
+	totalDuplicatedWsSubscriptionRequestsMetric := prometheus.NewCounterVec(prometheus.CounterOpts{
+		Name: "lava_consumer_total_duplicated_ws_subscription_requests",
+		Help: "The total number of duplicated webscket subscription requests over time per chain id per api interface.",
+	}, []string{"spec", "apiInterface"})
+
+	totalWsSubscriptionDissconnectMetric := prometheus.NewCounterVec(prometheus.CounterOpts{
+		Name: "lava_consumer_total_ws_subscription_disconnect",
+		Help: "The total number of websocket subscription disconnects over time per chain id per api interface per dissconnect reason.",
+	}, []string{"spec", "apiInterface", "dissconectReason"})
+
 	blockMetric := prometheus.NewGaugeVec(prometheus.GaugeOpts{
 		Name: "lava_latest_block",
 		Help: "The latest block measured",
@@ -196,10 +226,18 @@ func NewConsumerMetricsManager(options ConsumerMetricsManagerOptions) *ConsumerM
 	prometheus.MustRegister(totalNodeErroredRecoveryAttemptsMetric)
 	prometheus.MustRegister(relayProcessingLatencyBeforeProvider)
 	prometheus.MustRegister(relayProcessingLatencyAfterProvider)
+	prometheus.MustRegister(totalWsSubscriptionRequestsMetric)
+	prometheus.MustRegister(totalFailedWsSubscriptionRequestsMetric)
+	prometheus.MustRegister(totalDuplicatedWsSubscriptionRequestsMetric)
+	prometheus.MustRegister(totalWsSubscriptionDissconnectMetric)
 
 	consumerMetricsManager := &ConsumerMetricsManager{
 		totalCURequestedMetric:                      totalCURequestedMetric,
 		totalRelaysRequestedMetric:                  totalRelaysRequestedMetric,
+		totalWsSubscriptionRequestsMetric:           totalWsSubscriptionRequestsMetric,
+		totalFailedWsSubscriptionRequestsMetric:     totalFailedWsSubscriptionRequestsMetric,
+		totalDuplicatedWsSubscriptionRequestsMetric: totalDuplicatedWsSubscriptionRequestsMetric,
+		totalWsSubscriptionDissconnectMetric:        totalWsSubscriptionDissconnectMetric,
 		totalErroredMetric:                          totalErroredMetric,
 		blockMetric:                                 blockMetric,
 		latencyMetric:                               latencyMetric,
@@ -460,3 +498,31 @@ func SetVersionInner(protocolVersionMetric *prometheus.GaugeVec, version string)
 	combined := major*1000000 + minor*1000 + patch
 	protocolVersionMetric.WithLabelValues("version").Set(float64(combined))
 }
+
+func (pme *ConsumerMetricsManager) SetWsSubscriptionRequestMetric(chainId string, apiInterface string) {
+	if pme == nil {
+		return
+	}
+	pme.totalWsSubscriptionRequestsMetric.WithLabelValues(chainId, apiInterface).Inc()
+}
+
+func (pme *ConsumerMetricsManager) SetFailedWsSubscriptionRequestMetric(chainId string, apiInterface string) {
+	if pme == nil {
+		return
+	}
+	pme.totalFailedWsSubscriptionRequestsMetric.WithLabelValues(chainId, apiInterface).Inc()
+}
+
+func (pme *ConsumerMetricsManager) SetDuplicatedWsSubscriptionRequestMetric(chainId string, apiInterface string) {
+	if pme == nil {
+		return
+	}
+	pme.totalDuplicatedWsSubscriptionRequestsMetric.WithLabelValues(chainId, apiInterface).Inc()
+}
+
+func (pme *ConsumerMetricsManager) SetWsSubscriptioDisconnectRequestMetric(chainId string, apiInterface string, disconnectReason string) {
+	if pme == nil {
+		return
+	}
+	pme.totalWsSubscriptionDissconnectMetric.WithLabelValues(chainId, apiInterface, disconnectReason).Inc()
+}