[management] add domain and service cleanup migration (#5850)

2026-04-16 07:16:38 +00:00 · 2026-04-11 12:00:40 +02:00
parent ebd78e0122
commit 5259e5df51
3 changed files with 296 additions and 0 deletions
--- a/management/server/migration/migration.go
+++ b/management/server/migration/migration.go
@@ -489,6 +489,102 @@ func MigrateJsonToTable[T any](ctx context.Context, db *gorm.DB, columnName stri
 	return nil
 }

+// hasForeignKey checks whether a foreign key constraint exists on the given table and column.
+func hasForeignKey(db *gorm.DB, table, column string) bool {
+	var count int64
+
+	switch db.Name() {
+	case "postgres":
+		db.Raw(`
+			SELECT COUNT(*) FROM information_schema.key_column_usage kcu
+			JOIN information_schema.table_constraints tc
+			  ON tc.constraint_name = kcu.constraint_name
+			  AND tc.table_schema = kcu.table_schema
+			WHERE tc.constraint_type = 'FOREIGN KEY'
+			  AND kcu.table_name = ?
+			  AND kcu.column_name = ?
+		`, table, column).Scan(&count)
+	case "mysql":
+		db.Raw(`
+			SELECT COUNT(*) FROM information_schema.key_column_usage
+			WHERE table_schema = DATABASE()
+			  AND table_name = ?
+			  AND column_name = ?
+			  AND referenced_table_name IS NOT NULL
+		`, table, column).Scan(&count)
+	default: // sqlite
+		type fkInfo struct {
+			From string
+		}
+		var fks []fkInfo
+		db.Raw(fmt.Sprintf("PRAGMA foreign_key_list(%s)", table)).Scan(&fks)
+		for _, fk := range fks {
+			if fk.From == column {
+				return true
+			}
+		}
+		return false
+	}
+
+	return count > 0
+}
+
+// CleanupOrphanedResources deletes rows from the table of model T where the foreign
+// key column (fkColumn) references a row in the table of model R that no longer exists.
+func CleanupOrphanedResources[T any, R any](ctx context.Context, db *gorm.DB, fkColumn string) error {
+	var model T
+	var refModel R
+
+	if !db.Migrator().HasTable(&model) {
+		log.WithContext(ctx).Debugf("table for %T does not exist, no cleanup needed", model)
+		return nil
+	}
+
+	if !db.Migrator().HasTable(&refModel) {
+		log.WithContext(ctx).Debugf("referenced table for %T does not exist, no cleanup needed", refModel)
+		return nil
+	}
+
+	stmtT := &gorm.Statement{DB: db}
+	if err := stmtT.Parse(&model); err != nil {
+		return fmt.Errorf("parse model %T: %w", model, err)
+	}
+	childTable := stmtT.Schema.Table
+
+	stmtR := &gorm.Statement{DB: db}
+	if err := stmtR.Parse(&refModel); err != nil {
+		return fmt.Errorf("parse reference model %T: %w", refModel, err)
+	}
+	parentTable := stmtR.Schema.Table
+
+	if !db.Migrator().HasColumn(&model, fkColumn) {
+		log.WithContext(ctx).Debugf("column %s does not exist in table %s, no cleanup needed", fkColumn, childTable)
+		return nil
+	}
+
+	// If a foreign key constraint already exists on the column, the DB itself
+	// enforces referential integrity and orphaned rows cannot exist.
+	if hasForeignKey(db, childTable, fkColumn) {
+		log.WithContext(ctx).Debugf("foreign key constraint for %s already exists on %s, no cleanup needed", fkColumn, childTable)
+		return nil
+	}
+
+	result := db.Exec(
+		fmt.Sprintf(
+			"DELETE FROM %s WHERE %s NOT IN (SELECT id FROM %s)",
+			childTable, fkColumn, parentTable,
+		),
+	)
+	if result.Error != nil {
+		return fmt.Errorf("cleanup orphaned rows in %s: %w", childTable, result.Error)
+	}
+
+	log.WithContext(ctx).Infof("Cleaned up %d orphaned rows from %s where %s had no matching row in %s",
+		result.RowsAffected, childTable, fkColumn, parentTable)
+
+	return nil
+}
+
 func RemoveDuplicatePeerKeys(ctx context.Context, db *gorm.DB) error {
 	if !db.Migrator().HasTable("peers") {
 		log.WithContext(ctx).Debug("peers table does not exist, skipping duplicate key cleanup")
--- a/management/server/migration/migration_test.go
+++ b/management/server/migration/migration_test.go
@@ -441,3 +441,197 @@ func TestRemoveDuplicatePeerKeys_NoTable(t *testing.T) {
 	err := migration.RemoveDuplicatePeerKeys(context.Background(), db)
 	require.NoError(t, err, "Should not fail when table does not exist")
 }
+
+type testParent struct {
+	ID string `gorm:"primaryKey"`
+}
+
+func (testParent) TableName() string {
+	return "test_parents"
+}
+
+type testChild struct {
+	ID       string `gorm:"primaryKey"`
+	ParentID string
+}
+
+func (testChild) TableName() string {
+	return "test_children"
+}
+
+type testChildWithFK struct {
+	ID       string      `gorm:"primaryKey"`
+	ParentID string      `gorm:"index"`
+	Parent   *testParent `gorm:"foreignKey:ParentID"`
+}
+
+func (testChildWithFK) TableName() string {
+	return "test_children"
+}
+
+func setupOrphanTestDB(t *testing.T, models ...any) *gorm.DB {
+	t.Helper()
+	db := setupDatabase(t)
+	for _, m := range models {
+		_ = db.Migrator().DropTable(m)
+	}
+	err := db.AutoMigrate(models...)
+	require.NoError(t, err, "Failed to auto-migrate tables")
+	return db
+}
+
+func TestCleanupOrphanedResources_NoChildTable(t *testing.T) {
+	db := setupDatabase(t)
+	_ = db.Migrator().DropTable(&testChild{})
+	_ = db.Migrator().DropTable(&testParent{})
+
+	err := migration.CleanupOrphanedResources[testChild, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err, "Should not fail when child table does not exist")
+}
+
+func TestCleanupOrphanedResources_NoParentTable(t *testing.T) {
+	db := setupDatabase(t)
+	_ = db.Migrator().DropTable(&testParent{})
+	_ = db.Migrator().DropTable(&testChild{})
+
+	err := db.AutoMigrate(&testChild{})
+	require.NoError(t, err)
+
+	err = migration.CleanupOrphanedResources[testChild, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err, "Should not fail when parent table does not exist")
+}
+
+func TestCleanupOrphanedResources_EmptyTables(t *testing.T) {
+	db := setupOrphanTestDB(t, &testParent{}, &testChild{})
+
+	err := migration.CleanupOrphanedResources[testChild, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err, "Should not fail on empty tables")
+
+	var count int64
+	db.Model(&testChild{}).Count(&count)
+	assert.Equal(t, int64(0), count)
+}
+
+func TestCleanupOrphanedResources_NoOrphans(t *testing.T) {
+	db := setupOrphanTestDB(t, &testParent{}, &testChild{})
+
+	require.NoError(t, db.Create(&testParent{ID: "p1"}).Error)
+	require.NoError(t, db.Create(&testParent{ID: "p2"}).Error)
+	require.NoError(t, db.Create(&testChild{ID: "c1", ParentID: "p1"}).Error)
+	require.NoError(t, db.Create(&testChild{ID: "c2", ParentID: "p2"}).Error)
+
+	err := migration.CleanupOrphanedResources[testChild, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err)
+
+	var count int64
+	db.Model(&testChild{}).Count(&count)
+	assert.Equal(t, int64(2), count, "All children should remain when no orphans")
+}
+
+func TestCleanupOrphanedResources_AllOrphans(t *testing.T) {
+	db := setupOrphanTestDB(t, &testParent{}, &testChild{})
+
+	require.NoError(t, db.Exec("INSERT INTO test_children (id, parent_id) VALUES (?, ?)", "c1", "gone1").Error)
+	require.NoError(t, db.Exec("INSERT INTO test_children (id, parent_id) VALUES (?, ?)", "c2", "gone2").Error)
+	require.NoError(t, db.Exec("INSERT INTO test_children (id, parent_id) VALUES (?, ?)", "c3", "gone3").Error)
+
+	err := migration.CleanupOrphanedResources[testChild, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err)
+
+	var count int64
+	db.Model(&testChild{}).Count(&count)
+	assert.Equal(t, int64(0), count, "All orphaned children should be deleted")
+}
+
+func TestCleanupOrphanedResources_MixedValidAndOrphaned(t *testing.T) {
+	db := setupOrphanTestDB(t, &testParent{}, &testChild{})
+
+	require.NoError(t, db.Create(&testParent{ID: "p1"}).Error)
+	require.NoError(t, db.Create(&testParent{ID: "p2"}).Error)
+
+	require.NoError(t, db.Create(&testChild{ID: "c1", ParentID: "p1"}).Error)
+	require.NoError(t, db.Create(&testChild{ID: "c2", ParentID: "p2"}).Error)
+	require.NoError(t, db.Create(&testChild{ID: "c3", ParentID: "p1"}).Error)
+
+	require.NoError(t, db.Exec("INSERT INTO test_children (id, parent_id) VALUES (?, ?)", "c4", "gone1").Error)
+	require.NoError(t, db.Exec("INSERT INTO test_children (id, parent_id) VALUES (?, ?)", "c5", "gone2").Error)
+
+	err := migration.CleanupOrphanedResources[testChild, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err)
+
+	var remaining []testChild
+	require.NoError(t, db.Order("id").Find(&remaining).Error)
+
+	assert.Len(t, remaining, 3, "Only valid children should remain")
+	assert.Equal(t, "c1", remaining[0].ID)
+	assert.Equal(t, "c2", remaining[1].ID)
+	assert.Equal(t, "c3", remaining[2].ID)
+}
+
+func TestCleanupOrphanedResources_Idempotent(t *testing.T) {
+	db := setupOrphanTestDB(t, &testParent{}, &testChild{})
+
+	require.NoError(t, db.Create(&testParent{ID: "p1"}).Error)
+	require.NoError(t, db.Create(&testChild{ID: "c1", ParentID: "p1"}).Error)
+	require.NoError(t, db.Exec("INSERT INTO test_children (id, parent_id) VALUES (?, ?)", "c2", "gone").Error)
+
+	ctx := context.Background()
+
+	err := migration.CleanupOrphanedResources[testChild, testParent](ctx, db, "parent_id")
+	require.NoError(t, err)
+
+	var count int64
+	db.Model(&testChild{}).Count(&count)
+	assert.Equal(t, int64(1), count)
+
+	err = migration.CleanupOrphanedResources[testChild, testParent](ctx, db, "parent_id")
+	require.NoError(t, err)
+
+	db.Model(&testChild{}).Count(&count)
+	assert.Equal(t, int64(1), count, "Count should remain the same after second run")
+}
+
+func TestCleanupOrphanedResources_SkipsWhenForeignKeyExists(t *testing.T) {
+	engine := os.Getenv("NETBIRD_STORE_ENGINE")
+	if engine != "postgres" && engine != "mysql" {
+		t.Skip("FK constraint early-exit test requires postgres or mysql")
+	}
+
+	db := setupDatabase(t)
+	_ = db.Migrator().DropTable(&testChildWithFK{})
+	_ = db.Migrator().DropTable(&testParent{})
+
+	err := db.AutoMigrate(&testParent{}, &testChildWithFK{})
+	require.NoError(t, err)
+
+	require.NoError(t, db.Create(&testParent{ID: "p1"}).Error)
+	require.NoError(t, db.Create(&testParent{ID: "p2"}).Error)
+	require.NoError(t, db.Create(&testChildWithFK{ID: "c1", ParentID: "p1"}).Error)
+	require.NoError(t, db.Create(&testChildWithFK{ID: "c2", ParentID: "p2"}).Error)
+
+	switch engine {
+	case "postgres":
+		require.NoError(t, db.Exec("ALTER TABLE test_children DROP CONSTRAINT fk_test_children_parent").Error)
+		require.NoError(t, db.Exec("DELETE FROM test_parents WHERE id = ?", "p2").Error)
+		require.NoError(t, db.Exec(
+			"ALTER TABLE test_children ADD CONSTRAINT fk_test_children_parent "+
+				"FOREIGN KEY (parent_id) REFERENCES test_parents(id) NOT VALID",
+		).Error)
+	case "mysql":
+		require.NoError(t, db.Exec("SET FOREIGN_KEY_CHECKS = 0").Error)
+		require.NoError(t, db.Exec("ALTER TABLE test_children DROP FOREIGN KEY fk_test_children_parent").Error)
+		require.NoError(t, db.Exec("DELETE FROM test_parents WHERE id = ?", "p2").Error)
+		require.NoError(t, db.Exec(
+			"ALTER TABLE test_children ADD CONSTRAINT fk_test_children_parent "+
+				"FOREIGN KEY (parent_id) REFERENCES test_parents(id)",
+		).Error)
+		require.NoError(t, db.Exec("SET FOREIGN_KEY_CHECKS = 1").Error)
+	}
+
+	err = migration.CleanupOrphanedResources[testChildWithFK, testParent](context.Background(), db, "parent_id")
+	require.NoError(t, err)
+
+	var count int64
+	db.Model(&testChildWithFK{}).Count(&count)
+	assert.Equal(t, int64(2), count, "Both rows should survive — migration must skip when FK constraint exists")
+}