Files
Automata/packages/cli/src/databases/utils/migrationHelpers.ts
2022-06-17 22:15:03 -07:00

86 lines
2.6 KiB
TypeScript

/* eslint-disable no-await-in-loop */
import { readFileSync, rmSync } from 'fs';
import { UserSettings } from 'n8n-core';
import { QueryRunner } from 'typeorm/query-runner/QueryRunner';
import { getLogger } from '../../Logger';
const PERSONALIZATION_SURVEY_FILENAME = 'personalizationSurvey.json';
export function loadSurveyFromDisk(): string | null {
const userSettingsPath = UserSettings.getUserN8nFolderPath();
try {
const filename = `${userSettingsPath}/${PERSONALIZATION_SURVEY_FILENAME}`;
const surveyFile = readFileSync(filename, 'utf-8');
rmSync(filename);
const personalizationSurvey = JSON.parse(surveyFile) as object;
const kvPairs = Object.entries(personalizationSurvey);
if (!kvPairs.length) {
throw new Error('personalizationSurvey is empty');
} else {
// eslint-disable-next-line @typescript-eslint/naming-convention
const emptyKeys = kvPairs.reduce((acc, [_key, value]) => {
if (!value || (Array.isArray(value) && !value.length)) {
return acc + 1;
}
return acc;
}, 0);
if (emptyKeys === kvPairs.length) {
throw new Error('incomplete personalizationSurvey');
}
}
return surveyFile;
} catch (error) {
return null;
}
}
let logFinishTimeout: NodeJS.Timeout;
const disableLogging = process.argv[1].split('/').includes('jest');
export function logMigrationStart(migrationName: string): void {
if (disableLogging) return;
const logger = getLogger();
if (!logFinishTimeout) {
logger.warn('Migrations in progress, please do NOT stop the process.');
}
logger.debug(`Starting migration ${migrationName}`);
clearTimeout(logFinishTimeout);
}
export function logMigrationEnd(migrationName: string): void {
if (disableLogging) return;
const logger = getLogger();
logger.debug(`Finished migration ${migrationName}`);
logFinishTimeout = setTimeout(() => {
logger.warn('Migrations finished.');
}, 100);
}
export function chunkQuery(query: string, limit: number, offset = 0): string {
return `
${query}
LIMIT ${limit}
OFFSET ${offset}
`;
}
export async function runChunked(
queryRunner: QueryRunner,
query: string,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
operation: (results: any[]) => Promise<void>,
limit = 100,
): Promise<void> {
let offset = 0;
let chunkedQuery: string;
let chunkedQueryResults: unknown[];
do {
chunkedQuery = chunkQuery(query, limit, offset);
chunkedQueryResults = (await queryRunner.query(chunkedQuery)) as unknown[];
// pass a copy to prevent errors from mutation
await operation([...chunkedQueryResults]);
offset += limit;
} while (chunkedQueryResults.length === limit);
}