[db] DBWorkspace: add ind_basedOnPrebuildId (#18832)

Author: geropl

components/gitpod-db/src/typeorm/migration/1695888330735-WorkspaceIndexBasedOnPrebuildId.ts

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2023 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 { indexExists } from "./helper/helper";
+
+const TABLE_NAME = "d_b_workspace";
+const INDEX_NAME = "ind_basedOnPrebuildId";
+
+export class WorkspaceIndexBasedOnPrebuildId1695888330735 implements MigrationInterface {
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        if (!(await indexExists(queryRunner, TABLE_NAME, INDEX_NAME))) {
+            await queryRunner.query(
+                `ALTER TABLE \`${TABLE_NAME}\` ADD INDEX \`${INDEX_NAME}\` (basedOnPrebuildId), ALGORITHM=INPLACE, LOCK=NONE`,
+            );
+        }
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        if (await indexExists(queryRunner, TABLE_NAME, INDEX_NAME)) {
+            await queryRunner.query(`DROP INDEX ${INDEX_NAME} ON ${TABLE_NAME}`);
+        }
+    }
+}

components/gitpod-db/src/typeorm/workspace-db-impl.ts

@@ -597,6 +597,7 @@ export class TypeORMWorkspaceDBImpl extends TransactionalDBImpl<WorkspaceDB> imp
                 LEFT OUTER JOIN d_b_workspace AS usages ON usages.basedOnPrebuildId = pb.id
                 WHERE
                         pb.buildworkspaceId = ws.id
+                    AND ws.type = 'prebuild'
                     AND ws.contentDeletedTime = ''
                     AND ws.pinned = 0
                     AND ws.creationTime < NOW() - INTERVAL ? DAY