52 lines
1.8 KiB
TypeScript
52 lines
1.8 KiB
TypeScript
import { Logger } from '@nestjs/common';
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import type { NextFunction, Request, Response } from 'express';
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/**
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* Eine Protokollzeile je API-Anfrage im Docker-Log (quick-261002):
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* `GET /modules/nextcloud-status/instances 200 34 ms user=admin`.
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*
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* Nur Methode, Pfad OHNE Abfrageteil (dort koennten Kennungen oder Token
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* stehen), Status, Dauer und Benutzername — nie Koerper, Cookies oder
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* Kopfzeilen. `/health` wird ausgelassen, der Docker-Healthcheck fragt es
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* alle paar Sekunden ab. Fehler (>= 500) als `error`, Abweisungen (>= 400)
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* als `warn`, langsame Anfragen (>= 3 s) mit Vermerk.
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*/
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const logger = new Logger('HTTP');
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export const SLOW_REQUEST_MS = 3000;
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export function formatRequestLine(input: {
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method: string;
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url: string;
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status: number;
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ms: number;
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username?: string | null;
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}): string {
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const path = input.url.split('?')[0] ?? input.url;
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const slow = input.ms >= SLOW_REQUEST_MS ? ' LANGSAM' : '';
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return `${input.method} ${path} ${input.status} ${input.ms} ms user=${input.username ?? '-'}${slow}`;
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}
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export function requestLogMiddleware(req: Request, res: Response, next: NextFunction): void {
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const url = req.originalUrl ?? req.url;
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if (url === '/health' || url.startsWith('/health?') || url.startsWith('/health/')) {
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next();
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return;
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}
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const started = process.hrtime.bigint();
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res.on('finish', () => {
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const ms = Number((process.hrtime.bigint() - started) / 1_000_000n);
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const username = (req as Request & { user?: { username?: string } }).user?.username;
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const line = formatRequestLine({
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method: req.method,
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url,
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status: res.statusCode,
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ms,
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username,
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});
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if (res.statusCode >= 500) logger.error(line);
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else if (res.statusCode >= 400 || ms >= SLOW_REQUEST_MS) logger.warn(line);
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else logger.log(line);
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});
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next();
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}
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