added blocked metrics

management/server/grpcserver.go

@@ -130,9 +130,6 @@ func getRealIP(ctx context.Context) net.IP {
 // notifies the connected peer of any updates (e.g. new peers under the same account)
 func (s *GRPCServer) Sync(req *proto.EncryptedMessage, srv proto.ManagementService_SyncServer) error {
 	reqStart := time.Now()
-	if s.appMetrics != nil {
-		s.appMetrics.GRPCMetrics().CountSyncRequest()
-	}
 
 	ctx := srv.Context()
 
@@ -146,9 +143,21 @@ func (s *GRPCServer) Sync(req *proto.EncryptedMessage, srv proto.ManagementServi
 	peerMeta := extractPeerMeta(ctx, syncReq.GetMeta())
 	metahashed := metaHash(peerMeta, sRealIP)
 	if !s.accountManager.AllowSync(peerKey.String(), metahashed) {
+		if s.appMetrics != nil {
+			s.appMetrics.GRPCMetrics().CountSyncRequestBlocked()
+		}
 		return mapError(ctx, internalStatus.ErrPeerAlreadyLoggedIn)
 	}
 
+	if s.appMetrics != nil {
+		s.appMetrics.GRPCMetrics().CountSyncRequest()
+	}
+	defer func() {
+		if s.appMetrics != nil {
+			s.appMetrics.GRPCMetrics().CountSyncRequestDuration(time.Since(reqStart))
+		}
+	}()
+
 	// nolint:staticcheck
 	ctx = context.WithValue(ctx, nbContext.PeerIDKey, peerKey.String())
 
@@ -197,10 +206,6 @@ func (s *GRPCServer) Sync(req *proto.EncryptedMessage, srv proto.ManagementServi
 
 	s.secretsManager.SetupRefresh(ctx, accountID, peer.ID)
 
-	if s.appMetrics != nil {
-		s.appMetrics.GRPCMetrics().CountSyncRequestDuration(time.Since(reqStart))
-	}
-
 	unlock()
 	unlock = nil
 
@@ -439,14 +444,6 @@ func (s *GRPCServer) parseRequest(ctx context.Context, req *proto.EncryptedMessa
 // In case of the successful registration login is also successful
 func (s *GRPCServer) Login(ctx context.Context, req *proto.EncryptedMessage) (*proto.EncryptedMessage, error) {
 	reqStart := time.Now()
-	defer func() {
-		if s.appMetrics != nil {
-			s.appMetrics.GRPCMetrics().CountLoginRequestDuration(time.Since(reqStart))
-		}
-	}()
-	if s.appMetrics != nil {
-		s.appMetrics.GRPCMetrics().CountLoginRequest()
-	}
 	realIP := getRealIP(ctx)
 	sRealIP := realIP.String()
 	log.WithContext(ctx).Debugf("Login request from peer [%s] [%s]", req.WgPubKey, sRealIP)
@@ -460,9 +457,20 @@ func (s *GRPCServer) Login(ctx context.Context, req *proto.EncryptedMessage) (*p
 	peerMeta := extractPeerMeta(ctx, loginReq.GetMeta())
 	metahashed := metaHash(peerMeta, sRealIP)
 	if !s.accountManager.AllowSync(peerKey.String(), metahashed) {
-		return nil, mapError(ctx, internalStatus.ErrPeerAlreadyLoggedIn)
+		if s.appMetrics != nil {
+			s.appMetrics.GRPCMetrics().CountLoginRequestBlocked()
+		}
+		return nil, internalStatus.ErrPeerAlreadyLoggedIn
 	}
 
+	defer func() {
+		if s.appMetrics != nil {
+			s.appMetrics.GRPCMetrics().CountLoginRequestDuration(time.Since(reqStart))
+		}
+	}()
+	if s.appMetrics != nil {
+		s.appMetrics.GRPCMetrics().CountLoginRequest()
+	}
 	//nolint
 	ctx = context.WithValue(ctx, nbContext.PeerIDKey, peerKey.String())
 	accountID, err := s.accountManager.GetAccountIDForPeerKey(ctx, peerKey.String())

management/server/status/error.go

@@ -43,7 +43,7 @@ const (
 type Type int32
 
 var (
-	ErrExtraSettingsNotFound = fmt.Errorf("extra settings not found")
+	ErrExtraSettingsNotFound = errors.New("extra settings not found")
 	ErrPeerAlreadyLoggedIn   = errors.New("peer with the same public key is already logged in")
 )
 

management/server/telemetry/grpc_metrics.go

@@ -11,7 +11,9 @@ import (
 type GRPCMetrics struct {
 	meter                       metric.Meter
 	syncRequestsCounter         metric.Int64Counter
+	syncRequestsBlockedCounter  metric.Int64Counter
 	loginRequestsCounter        metric.Int64Counter
+	loginRequestsBlockedCounter metric.Int64Counter
 	getKeyRequestsCounter       metric.Int64Counter
 	activeStreamsGauge          metric.Int64ObservableGauge
 	syncRequestDuration         metric.Int64Histogram
@@ -30,6 +32,14 @@ func NewGRPCMetrics(ctx context.Context, meter metric.Meter) (*GRPCMetrics, erro
 		return nil, err
 	}
 
+	syncRequestsBlockedCounter, err := meter.Int64Counter("management.grpc.sync.request.blocked.counter",
+		metric.WithUnit("1"),
+		metric.WithDescription("Number of sync gRPC requests from blocked peers"),
+	)
+	if err != nil {
+		return nil, err
+	}
+
 	loginRequestsCounter, err := meter.Int64Counter("management.grpc.login.request.counter",
 		metric.WithUnit("1"),
 		metric.WithDescription("Number of login gRPC requests from the peers to authenticate and receive initial configuration and relay credentials"),
@@ -38,6 +48,14 @@ func NewGRPCMetrics(ctx context.Context, meter metric.Meter) (*GRPCMetrics, erro
 		return nil, err
 	}
 
+	loginRequestsBlockedCounter, err := meter.Int64Counter("management.grpc.login.request.blocked.counter",
+		metric.WithUnit("1"),
+		metric.WithDescription("Number of login gRPC requests from blocked peers"),
+	)
+	if err != nil {
+		return nil, err
+	}
+
 	getKeyRequestsCounter, err := meter.Int64Counter("management.grpc.key.request.counter",
 		metric.WithUnit("1"),
 		metric.WithDescription("Number of key gRPC requests from the peers to get the server's public WireGuard key"),
@@ -85,7 +103,9 @@ func NewGRPCMetrics(ctx context.Context, meter metric.Meter) (*GRPCMetrics, erro
 	return &GRPCMetrics{
 		meter:                       meter,
 		syncRequestsCounter:         syncRequestsCounter,
+		syncRequestsBlockedCounter:  syncRequestsBlockedCounter,
 		loginRequestsCounter:        loginRequestsCounter,
+		loginRequestsBlockedCounter: loginRequestsBlockedCounter,
 		getKeyRequestsCounter:       getKeyRequestsCounter,
 		activeStreamsGauge:          activeStreamsGauge,
 		syncRequestDuration:         syncRequestDuration,
@@ -100,6 +120,11 @@ func (grpcMetrics *GRPCMetrics) CountSyncRequest() {
 	grpcMetrics.syncRequestsCounter.Add(grpcMetrics.ctx, 1)
 }
 
+// CountSyncRequestBlocked counts the number of gRPC sync requests from blocked peers
+func (grpcMetrics *GRPCMetrics) CountSyncRequestBlocked() {
+	grpcMetrics.syncRequestsBlockedCounter.Add(grpcMetrics.ctx, 1)
+}
+
 // CountGetKeyRequest counts the number of gRPC get server key requests coming to the gRPC API
 func (grpcMetrics *GRPCMetrics) CountGetKeyRequest() {
 	grpcMetrics.getKeyRequestsCounter.Add(grpcMetrics.ctx, 1)
@@ -110,6 +135,11 @@ func (grpcMetrics *GRPCMetrics) CountLoginRequest() {
 	grpcMetrics.loginRequestsCounter.Add(grpcMetrics.ctx, 1)
 }
 
+// CountLoginRequestBlocked counts the number of gRPC login requests from blocked peers
+func (grpcMetrics *GRPCMetrics) CountLoginRequestBlocked() {
+	grpcMetrics.loginRequestsBlockedCounter.Add(grpcMetrics.ctx, 1)
+}
+
 // CountLoginRequestDuration counts the duration of the login gRPC requests
 func (grpcMetrics *GRPCMetrics) CountLoginRequestDuration(duration time.Duration) {
 	grpcMetrics.loginRequestDuration.Record(grpcMetrics.ctx, duration.Milliseconds())