Skip network map calculation when client serial matches current

Signed-off-by: bcmmbaga <bethuelmbaga12@gmail.com>

management/internals/controllers/network_map/controller/controller.go

@@ -394,23 +394,26 @@ func (c *Controller) BufferUpdateAccountPeers(ctx context.Context, accountID str
 	return nil
 }
 
-func (c *Controller) GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, peer *nbpeer.Peer) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
-	if isRequiresApproval {
-		network, err := c.repo.GetAccountNetwork(ctx, accountID)
-		if err != nil {
-			return nil, nil, nil, 0, err
-		}
+func (c *Controller) GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, peer *nbpeer.Peer, clientSerial uint64) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
+	network, err := c.repo.GetAccountNetwork(ctx, accountID)
+	if err != nil {
+		return nil, nil, nil, 0, err
+	}
 
+	if isRequiresApproval {
 		emptyMap := &types.NetworkMap{
 			Network: network.Copy(),
 		}
 		return peer, emptyMap, nil, 0, nil
 	}
 
-	var (
-		account *types.Account
-		err     error
-	)
+	if clientSerial > 0 && clientSerial == network.CurrentSerial() {
+		log.WithContext(ctx).Debugf("client serial %d matches current serial, skipping network map calculation", clientSerial)
+		return peer, nil, nil, 0, nil
+	}
+
+	var account *types.Account
+
 	if c.experimentalNetworkMap(accountID) {
 		account = c.getAccountFromHolderOrInit(accountID)
 	} else {

management/internals/controllers/network_map/interface.go

@@ -24,7 +24,7 @@ type Controller interface {
 	UpdateAccountPeers(ctx context.Context, accountID string) error
 	UpdateAccountPeer(ctx context.Context, accountId string, peerId string) error
 	BufferUpdateAccountPeers(ctx context.Context, accountID string) error
-	GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, p *nbpeer.Peer) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
+	GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, p *nbpeer.Peer, clientSerial uint64) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
 	GetDNSDomain(settings *types.Settings) string
 	StartWarmup(context.Context)
 	GetNetworkMap(ctx context.Context, peerID string) (*types.NetworkMap, error)

management/internals/controllers/network_map/interface_mock.go

@@ -113,9 +113,9 @@ func (mr *MockControllerMockRecorder) GetNetworkMap(ctx, peerID any) *gomock.Cal
 }
 
 // GetValidatedPeerWithMap mocks base method.
-func (m *MockController) GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, p *peer.Peer) (*peer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
+func (m *MockController) GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, p *peer.Peer, clientSerial uint64) (*peer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "GetValidatedPeerWithMap", ctx, isRequiresApproval, accountID, p)
+	ret := m.ctrl.Call(m, "GetValidatedPeerWithMap", ctx, isRequiresApproval, accountID, p, clientSerial)
 	ret0, _ := ret[0].(*peer.Peer)
 	ret1, _ := ret[1].(*types.NetworkMap)
 	ret2, _ := ret[2].([]*posture.Checks)
@@ -125,9 +125,9 @@ func (m *MockController) GetValidatedPeerWithMap(ctx context.Context, isRequires
 }
 
 // GetValidatedPeerWithMap indicates an expected call of GetValidatedPeerWithMap.
-func (mr *MockControllerMockRecorder) GetValidatedPeerWithMap(ctx, isRequiresApproval, accountID, p any) *gomock.Call {
+func (mr *MockControllerMockRecorder) GetValidatedPeerWithMap(ctx, isRequiresApproval, accountID, p, clientSerial any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetValidatedPeerWithMap", reflect.TypeOf((*MockController)(nil).GetValidatedPeerWithMap), ctx, isRequiresApproval, accountID, p)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetValidatedPeerWithMap", reflect.TypeOf((*MockController)(nil).GetValidatedPeerWithMap), ctx, isRequiresApproval, accountID, p, clientSerial)
 }
 
 // OnPeerConnected mocks base method.

management/internals/shared/grpc/conversion.go

@@ -104,6 +104,20 @@ func toPeerConfig(peer *nbpeer.Peer, network *types.Network, dnsName string, set
 	}
 }
 
+// ToSkipSyncResponse creates a minimal SyncResponse when the client already has the latest network map.
+func ToSkipSyncResponse(ctx context.Context, config *nbconfig.Config, peer *nbpeer.Peer, turnCredentials *Token, relayCredentials *Token, checks []*posture.Checks, extraSettings *types.ExtraSettings, peerGroups []string) *proto.SyncResponse {
+	response := &proto.SyncResponse{
+		SkipNetworkMapUpdate: true,
+		Checks:               toProtocolChecks(ctx, checks),
+	}
+
+	nbConfig := toNetbirdConfig(config, turnCredentials, relayCredentials, extraSettings)
+	extendedConfig := integrationsConfig.ExtendNetBirdConfig(peer.ID, peerGroups, nbConfig, extraSettings)
+	response.NetbirdConfig = extendedConfig
+
+	return response
+}
+
 func ToSyncResponse(ctx context.Context, config *nbconfig.Config, httpConfig *nbconfig.HttpServerConfig, deviceFlowConfig *nbconfig.DeviceAuthorizationFlow, peer *nbpeer.Peer, turnCredentials *Token, relayCredentials *Token, networkMap *types.NetworkMap, dnsName string, checks []*posture.Checks, dnsCache *cache.DNSConfigCache, settings *types.Settings, extraSettings *types.ExtraSettings, peerGroups []string, dnsFwdPort int64) *proto.SyncResponse {
 	response := &proto.SyncResponse{
 		PeerConfig: toPeerConfig(peer, networkMap.Network, dnsName, settings, httpConfig, deviceFlowConfig),

management/internals/shared/grpc/server.go

@@ -239,7 +239,7 @@ func (s *Server) Sync(req *proto.EncryptedMessage, srv proto.ManagementService_S
 	metahash := metaHash(peerMeta, realIP.String())
 	s.loginFilter.addLogin(peerKey.String(), metahash)
 
-	peer, netMap, postureChecks, dnsFwdPort, err := s.accountManager.SyncAndMarkPeer(ctx, accountID, peerKey.String(), peerMeta, realIP)
+	peer, netMap, postureChecks, dnsFwdPort, err := s.accountManager.SyncAndMarkPeer(ctx, accountID, peerKey.String(), peerMeta, realIP, syncReq.GetNetworkMapSerial())
 	if err != nil {
 		log.WithContext(ctx).Debugf("error while syncing peer %s: %v", peerKey.String(), err)
 		s.syncSem.Add(-1)
@@ -702,7 +702,12 @@ func (s *Server) sendInitialSync(ctx context.Context, peerKey wgtypes.Key, peer
 		return status.Errorf(codes.Internal, "failed to get peer groups %s", err)
 	}
 
-	plainResp := ToSyncResponse(ctx, s.config, s.config.HttpConfig, s.config.DeviceAuthorizationFlow, peer, turnToken, relayToken, networkMap, s.networkMapController.GetDNSDomain(settings), postureChecks, nil, settings, settings.Extra, peerGroups, dnsFwdPort)
+	var plainResp *proto.SyncResponse
+	if networkMap == nil {
+		plainResp = ToSkipSyncResponse(ctx, s.config, peer, turnToken, relayToken, postureChecks, settings.Extra, peerGroups)
+	} else {
+		plainResp = ToSyncResponse(ctx, s.config, s.config.HttpConfig, s.config.DeviceAuthorizationFlow, peer, turnToken, relayToken, networkMap, s.networkMapController.GetDNSDomain(settings), postureChecks, nil, settings, settings.Extra, peerGroups, dnsFwdPort)
+	}
 
 	key, err := s.secretsManager.GetWGKey()
 	if err != nil {

management/server/account.go

@@ -1617,8 +1617,8 @@ func domainIsUpToDate(domain string, domainCategory string, userAuth auth.UserAu
 	return domainCategory == types.PrivateCategory || userAuth.DomainCategory != types.PrivateCategory || domain != userAuth.Domain
 }
 
-func (am *DefaultAccountManager) SyncAndMarkPeer(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
-	peer, netMap, postureChecks, dnsfwdPort, err := am.SyncPeer(ctx, types.PeerSync{WireGuardPubKey: peerPubKey, Meta: meta}, accountID)
+func (am *DefaultAccountManager) SyncAndMarkPeer(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP, clientSerial uint64) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
+	peer, netMap, postureChecks, dnsfwdPort, err := am.SyncPeer(ctx, types.PeerSync{WireGuardPubKey: peerPubKey, Meta: meta, NetworkMapSerial: clientSerial}, accountID)
 	if err != nil {
 		return nil, nil, nil, 0, fmt.Errorf("error syncing peer: %w", err)
 	}

management/server/account/manager.go

@@ -107,7 +107,7 @@ type Manager interface {
 	UpdateIntegratedValidator(ctx context.Context, accountID, userID, validator string, groups []string) error
 	GroupValidation(ctx context.Context, accountId string, groups []string) (bool, error)
 	GetValidatedPeers(ctx context.Context, accountID string) (map[string]struct{}, map[string]string, error)
-	SyncAndMarkPeer(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
+	SyncAndMarkPeer(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP, clientSerial uint64) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
 	OnPeerDisconnected(ctx context.Context, accountID string, peerPubKey string) error
 	SyncPeerMeta(ctx context.Context, peerPubKey string, meta nbpeer.PeerSystemMeta) error
 	FindExistingPostureCheck(accountID string, checks *posture.ChecksDefinition) (*posture.Checks, error)

management/server/account_test.go

@@ -3144,7 +3144,7 @@ func BenchmarkSyncAndMarkPeer(b *testing.B) {
 			b.ResetTimer()
 			start := time.Now()
 			for i := 0; i < b.N; i++ {
-				_, _, _, _, err := manager.SyncAndMarkPeer(context.Background(), account.Id, account.Peers["peer-1"].Key, nbpeer.PeerSystemMeta{Hostname: strconv.Itoa(i)}, net.IP{1, 1, 1, 1})
+				_, _, _, _, err := manager.SyncAndMarkPeer(context.Background(), account.Id, account.Peers["peer-1"].Key, nbpeer.PeerSystemMeta{Hostname: strconv.Itoa(i)}, net.IP{1, 1, 1, 1}, 0)
 				assert.NoError(b, err)
 			}
 

management/server/mock_server/account_mock.go

@@ -37,7 +37,7 @@ type MockAccountManager struct {
 	ListUsersFunc                         func(ctx context.Context, accountID string) ([]*types.User, error)
 	GetPeersFunc                          func(ctx context.Context, accountID, userID, nameFilter, ipFilter string) ([]*nbpeer.Peer, error)
 	MarkPeerConnectedFunc                 func(ctx context.Context, peerKey string, connected bool, realIP net.IP) error
-	SyncAndMarkPeerFunc                   func(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
+	SyncAndMarkPeerFunc                   func(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP, clientSerial uint64) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
 	DeletePeerFunc                        func(ctx context.Context, accountID, peerKey, userID string) error
 	GetNetworkMapFunc                     func(ctx context.Context, peerKey string) (*types.NetworkMap, error)
 	GetPeerNetworkFunc                    func(ctx context.Context, peerKey string) (*types.Network, error)
@@ -177,9 +177,9 @@ func (am *MockAccountManager) DeleteSetupKey(ctx context.Context, accountID, use
 	return status.Errorf(codes.Unimplemented, "method DeleteSetupKey is not implemented")
 }
 
-func (am *MockAccountManager) SyncAndMarkPeer(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
+func (am *MockAccountManager) SyncAndMarkPeer(ctx context.Context, accountID string, peerPubKey string, meta nbpeer.PeerSystemMeta, realIP net.IP, clientSerial uint64) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
 	if am.SyncAndMarkPeerFunc != nil {
-		return am.SyncAndMarkPeerFunc(ctx, accountID, peerPubKey, meta, realIP)
+		return am.SyncAndMarkPeerFunc(ctx, accountID, peerPubKey, meta, realIP, clientSerial)
 	}
 	return nil, nil, nil, 0, status.Errorf(codes.Unimplemented, "method MarkPeerConnected is not implemented")
 }

management/server/peer.go

@@ -645,7 +645,7 @@ func (am *DefaultAccountManager) AddPeer(ctx context.Context, accountID, setupKe
 		log.WithContext(ctx).Errorf("failed to update network map cache for peer %s: %v", newPeer.ID, err)
 	}
 
-	p, nmap, pc, _, err := am.networkMapController.GetValidatedPeerWithMap(ctx, false, accountID, newPeer)
+	p, nmap, pc, _, err := am.networkMapController.GetValidatedPeerWithMap(ctx, false, accountID, newPeer, 0)
 	return p, nmap, pc, err
 }
 
@@ -731,7 +731,7 @@ func (am *DefaultAccountManager) SyncPeer(ctx context.Context, sync types.PeerSy
 		}
 	}
 
-	return am.networkMapController.GetValidatedPeerWithMap(ctx, peerNotValid, accountID, peer)
+	return am.networkMapController.GetValidatedPeerWithMap(ctx, peerNotValid, accountID, peer, sync.NetworkMapSerial)
 }
 
 func (am *DefaultAccountManager) handlePeerLoginNotFound(ctx context.Context, login types.PeerLogin, err error) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, error) {
@@ -859,7 +859,7 @@ func (am *DefaultAccountManager) LoginPeer(ctx context.Context, login types.Peer
 		}
 	}
 
-	p, nmap, pc, _, err := am.networkMapController.GetValidatedPeerWithMap(ctx, isRequiresApproval, accountID, peer)
+	p, nmap, pc, _, err := am.networkMapController.GetValidatedPeerWithMap(ctx, isRequiresApproval, accountID, peer, 0)
 	return p, nmap, pc, err
 }
 

management/server/types/peer.go

@@ -15,6 +15,9 @@ type PeerSync struct {
 	// UpdateAccountPeers indicate updating account peers,
 	// which occurs when the peer's metadata is updated
 	UpdateAccountPeers bool
+	// NetworkMapSerial is the last known network map serial number on the client.
+	// Used to skip network map recalculation if client already has the latest.
+	NetworkMapSerial uint64
 }
 
 // PeerLogin used as a data object between the gRPC API and Manager on Login request.