45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
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import mysql from 'mysql2/promise';
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import type { Pool, PoolConnection, RowDataPacket, ResultSetHeader } from 'mysql2/promise';
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import { config } from './config.js';
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export const pool: Pool = mysql.createPool({
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...config.db,
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connectionLimit: 10,
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charset: 'utf8mb4',
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timezone: 'Z',
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dateStrings: false,
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namedPlaceholders: false,
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});
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// Alle Zeiten in UTC, auch die DB-Defaults (CURRENT_TIMESTAMP) – sonst Versatz zur Serverzeit.
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(pool as unknown as { on(e: string, f: (c: { query(s: string): void }) => void): void }).on('connection', (c) => c.query("SET time_zone = '+00:00'"));
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export type Row = RowDataPacket;
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type Exec = Pick<Pool | PoolConnection, 'execute'>;
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export async function query<T extends Row = Row>(sql: string, params: unknown[] = [], c: Exec = pool): Promise<T[]> {
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const [rows] = await c.execute<T[]>(sql, params as never[]);
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return rows;
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}
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export async function one<T extends Row = Row>(sql: string, params: unknown[] = [], c: Exec = pool): Promise<T | undefined> {
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return (await query<T>(sql, params, c))[0];
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}
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export async function run(sql: string, params: unknown[] = [], c: Exec = pool): Promise<ResultSetHeader> {
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const [res] = await c.execute<ResultSetHeader>(sql, params as never[]);
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return res;
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}
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export async function tx<T>(fn: (c: PoolConnection) => Promise<T>): Promise<T> {
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const c = await pool.getConnection();
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try {
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await c.beginTransaction();
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const out = await fn(c);
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await c.commit();
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return out;
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} catch (e) {
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await c.rollback();
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throw e;
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} finally {
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c.release();
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}
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}
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