n8n-enterprise-unlocked/packages/cli/src/databases/migrations/mysqldb/1671726148420-RemoveWorkflowDataLoadedFlag.ts

import { MigrationInterface, QueryRunner } from 'typeorm';
import { logMigrationEnd, logMigrationStart } from '@db/utils/migrationHelpers';
import config from '@/config';
import { StatisticsNames } from '@db/entities/WorkflowStatistics';

export class RemoveWorkflowDataLoadedFlag1671726148420 implements MigrationInterface {
	name = 'RemoveWorkflowDataLoadedFlag1671726148420';

	async up(queryRunner: QueryRunner) {
		logMigrationStart(this.name);
		const tablePrefix = config.getEnv('database.tablePrefix');

		// If any existing workflow has dataLoaded set to true, insert the relevant information to the statistics table
		const workflowIds: Array<{ id: number; dataLoaded: boolean }> = await queryRunner.query(`
			SELECT id, dataLoaded
			FROM ${tablePrefix}workflow_entity
		`);

		workflowIds.map(({ id, dataLoaded }) => {
			if (dataLoaded) {
				const [insertQuery, insertParams] = queryRunner.connection.driver.escapeQueryWithParameters(
					`
					INSERT INTO ${tablePrefix}workflow_statistics (workflowId, name, count, latestEvent) VALUES
					(:id, :name, 1, CURRENT_TIMESTAMP(3))
					`,
					{ id, name: StatisticsNames.dataLoaded },
					{},
				);

				return queryRunner.query(insertQuery, insertParams);
			}
			return undefined;
		});

		await queryRunner.query(`ALTER TABLE ${tablePrefix}workflow_entity DROP COLUMN dataLoaded`);

		logMigrationEnd(this.name);
	}

	async down(queryRunner: QueryRunner) {
		const tablePrefix = config.getEnv('database.tablePrefix');

		await queryRunner.query(
			`ALTER TABLE ${tablePrefix}workflow_entity ADD COLUMN dataLoaded BOOLEAN DEFAULT false`,
		);

		// Search through statistics for any workflows that have the dataLoaded stat
		const workflowsIds: Array<{ workflowId: string }> = await queryRunner.query(`
			SELECT workflowId
			FROM ${tablePrefix}workflow_statistics
			WHERE name = '${StatisticsNames.dataLoaded}'
		`);
		workflowsIds.map(({ workflowId }) => {
			return queryRunner.query(`
				UPDATE ${tablePrefix}workflow_entity
				SET dataLoaded = true
				WHERE id = '${workflowId}'`);
		});

		await queryRunner.query(
			`DELETE FROM ${tablePrefix}workflow_statistics WHERE name = '${StatisticsNames.dataLoaded}'`,
		);
	}
}