[management] Fix/delete groups without lock

management/internals/shared/grpc/server.go

@@ -276,6 +276,8 @@ func (s *Server) Sync(req *proto.EncryptedMessage, srv proto.ManagementService_S
 	unlock()
 	unlock = nil
 
+	log.WithContext(ctx).Debugf("Sync took %s", time.Since(reqStart))
+
 	s.syncSem.Add(-1)
 
 	return s.handleUpdates(ctx, accountID, peerKey, peer, updates, srv)
@@ -565,6 +567,7 @@ func (s *Server) Login(ctx context.Context, req *proto.EncryptedMessage) (*proto
 		if s.appMetrics != nil {
 			s.appMetrics.GRPCMetrics().CountLoginRequestDuration(time.Since(reqStart), accountID)
 		}
+		log.WithContext(ctx).Debugf("Login took %s", time.Since(reqStart))
 	}()
 
 	if loginReq.GetMeta() == nil {

management/server/group.go

@@ -427,7 +427,7 @@ func (am *DefaultAccountManager) DeleteGroups(ctx context.Context, accountID, us
 
 	err = am.Store.ExecuteInTransaction(ctx, func(transaction store.Store) error {
 		for _, groupID := range groupIDs {
-			group, err := transaction.GetGroupByID(ctx, store.LockingStrengthUpdate, accountID, groupID)
+			group, err := transaction.GetGroupByID(ctx, store.LockingStrengthNone, accountID, groupID)
 			if err != nil {
 				allErrors = errors.Join(allErrors, err)
 				continue
@@ -442,6 +442,10 @@ func (am *DefaultAccountManager) DeleteGroups(ctx context.Context, accountID, us
 			deletedGroups = append(deletedGroups, group)
 		}
 
+		if len(groupIDsToDelete) == 0 {
+			return allErrors
+		}
+
 		if err = transaction.DeleteGroups(ctx, accountID, groupIDsToDelete); err != nil {
 			return err
 		}

management/server/store/sql_store.go

@@ -63,6 +63,8 @@ type SqlStore struct {
 	installationPK    int
 	storeEngine       types.Engine
 	pool              *pgxpool.Pool
+
+	transactionTimeout time.Duration
 }
 
 type installation struct {
@@ -84,6 +86,14 @@ func NewSqlStore(ctx context.Context, db *gorm.DB, storeEngine types.Engine, met
 		conns = runtime.NumCPU()
 	}
 
+	transactionTimeout := 5 * time.Minute
+	if v := os.Getenv("NB_STORE_TRANSACTION_TIMEOUT"); v != "" {
+		if parsed, err := time.ParseDuration(v); err == nil {
+			transactionTimeout = parsed
+		}
+	}
+	log.WithContext(ctx).Infof("Setting transaction timeout to %v", transactionTimeout)
+
 	if storeEngine == types.SqliteStoreEngine {
 		if err == nil {
 			log.WithContext(ctx).Warnf("setting NB_SQL_MAX_OPEN_CONNS is not supported for sqlite, using default value 1")
@@ -101,7 +111,7 @@ func NewSqlStore(ctx context.Context, db *gorm.DB, storeEngine types.Engine, met
 
 	if skipMigration {
 		log.WithContext(ctx).Infof("skipping migration")
-		return &SqlStore{db: db, storeEngine: storeEngine, metrics: metrics, installationPK: 1}, nil
+		return &SqlStore{db: db, storeEngine: storeEngine, metrics: metrics, installationPK: 1, transactionTimeout: transactionTimeout}, nil
 	}
 
 	if err := migratePreAuto(ctx, db); err != nil {
@@ -120,7 +130,7 @@ func NewSqlStore(ctx context.Context, db *gorm.DB, storeEngine types.Engine, met
 		return nil, fmt.Errorf("migratePostAuto: %w", err)
 	}
 
-	return &SqlStore{db: db, storeEngine: storeEngine, metrics: metrics, installationPK: 1}, nil
+	return &SqlStore{db: db, storeEngine: storeEngine, metrics: metrics, installationPK: 1, transactionTimeout: transactionTimeout}, nil
 }
 
 func GetKeyQueryCondition(s *SqlStore) string {
@@ -2897,8 +2907,11 @@ func (s *SqlStore) IncrementNetworkSerial(ctx context.Context, accountId string)
 }
 
 func (s *SqlStore) ExecuteInTransaction(ctx context.Context, operation func(store Store) error) error {
+	timeoutCtx, cancel := context.WithTimeout(context.Background(), s.transactionTimeout)
+	defer cancel()
+
 	startTime := time.Now()
-	tx := s.db.Begin()
+	tx := s.db.WithContext(timeoutCtx).Begin()
 	if tx.Error != nil {
 		return tx.Error
 	}
@@ -2933,6 +2946,9 @@ func (s *SqlStore) ExecuteInTransaction(ctx context.Context, operation func(stor
 	err := operation(repo)
 	if err != nil {
 		tx.Rollback()
+		if errors.Is(err, context.DeadlineExceeded) || errors.Is(timeoutCtx.Err(), context.DeadlineExceeded) {
+			log.WithContext(ctx).Warnf("transaction exceeded %s timeout after %v, stack: %s", s.transactionTimeout, time.Since(startTime), debug.Stack())
+		}
 		return err
 	}
 
@@ -2945,13 +2961,19 @@ func (s *SqlStore) ExecuteInTransaction(ctx context.Context, operation func(stor
 	}
 
 	err = tx.Commit().Error
+	if err != nil {
+		if errors.Is(err, context.DeadlineExceeded) || errors.Is(timeoutCtx.Err(), context.DeadlineExceeded) {
+			log.WithContext(ctx).Warnf("transaction commit exceeded %s timeout after %v, stack: %s", s.transactionTimeout, time.Since(startTime), debug.Stack())
+		}
+		return err
+	}
 
 	log.WithContext(ctx).Tracef("transaction took %v", time.Since(startTime))
 	if s.metrics != nil {
 		s.metrics.StoreMetrics().CountTransactionDuration(time.Since(startTime))
 	}
 
-	return err
+	return nil
 }
 
 func (s *SqlStore) withTx(tx *gorm.DB) Store {

management/server/store/sql_store_test.go

@@ -3857,3 +3857,30 @@ func TestSqlStore_ApproveAccountPeers(t *testing.T) {
 		})
 	})
 }
+
+func TestSqlStore_ExecuteInTransaction_Timeout(t *testing.T) {
+	if os.Getenv("NETBIRD_STORE_ENGINE") == "mysql" {
+		t.Skip("Skipping timeout test for MySQL")
+	}
+
+	t.Setenv("NB_STORE_TRANSACTION_TIMEOUT", "1s")
+
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "", t.TempDir())
+	require.NoError(t, err)
+	t.Cleanup(cleanup)
+
+	sqlStore, ok := store.(*SqlStore)
+	require.True(t, ok)
+	assert.Equal(t, 1*time.Second, sqlStore.transactionTimeout)
+
+	ctx := context.Background()
+	err = sqlStore.ExecuteInTransaction(ctx, func(transaction Store) error {
+		// Sleep for 2 seconds to exceed the 1 second timeout
+		time.Sleep(2 * time.Second)
+		return nil
+	})
+
+	// The transaction should fail with an error (either timeout or already rolled back)
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "transaction has already been committed or rolled back", "expected transaction rolled back error, got: %v", err)
+}