Add migration

components/gitpod-db/src/typeorm/entity/db-workspace-instance.ts

@@ -97,6 +97,9 @@ export class DBWorkspaceInstance implements WorkspaceInstance {
     @Column("simple-json", { nullable: true })
     imageBuildInfo?: ImageBuildInfo;
 
-    @Column({ nullable: true })
+    @Column({
+        default: "",
+        transformer: Transformer.MAP_EMPTY_STR_TO_UNDEFINED,
+    })
     workspaceClass?: string;
 }

components/gitpod-db/src/typeorm/migration/1654264374619-WorkspaceClass.ts

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2022 Gitpod GmbH. All rights reserved.
+ * Licensed under the GNU Affero General Public License (AGPL).
+ * See License-AGPL.txt in the project root for license information.
+ */
+
+import { MigrationInterface, QueryRunner } from "typeorm";
+import { columnExists } from "./helper/helper";
+
+const TABLE_NAME = "d_b_workspace_instance";
+const COLUMN_NAME = "workspaceClass";
+
+export class WorkspaceClass1654264374619 implements MigrationInterface {
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        if (!(await columnExists(queryRunner, TABLE_NAME, COLUMN_NAME))) {
+            await queryRunner.query(
+                `ALTER TABLE ${TABLE_NAME} ADD COLUMN ${COLUMN_NAME} varchar(255) NOT NULL DEFAULT '', ALGORITHM=INPLACE, LOCK=NONE`,
+            );
+        }
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        if (await columnExists(queryRunner, TABLE_NAME, COLUMN_NAME)) {
+            await queryRunner.query(`ALTER TABLE ${TABLE_NAME} DROP COLUMN ${COLUMN_NAME}`);
+        }
+    }
+}