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2026-07-18 23:50:32 +02:00
commit 8baba7b51f
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backend/src/consoleLog.js Normal file
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const fs = require('fs');
// Persistenter Pfad (selbes Volume wie die DB), übersteht Container-Neustarts
const LOG_FILE = process.env.CONSOLE_LOG_FILE || '/data/app-console.log';
const MAX_AGE_MS = 24 * 60 * 60 * 1000;
const origLog = console.log.bind(console);
const origError = console.error.bind(console);
const origWarn = console.warn.bind(console);
function stringifyArg(a) {
if (typeof a === 'string') return a;
if (a instanceof Error) return a.stack || a.message;
try { return JSON.stringify(a); } catch { return String(a); }
}
function localTimestamp() {
const d = new Date();
const pad = (n, len=2) => String(n).padStart(len, '0');
return `${d.getFullYear()}-${pad(d.getMonth()+1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}:${pad(d.getSeconds())}.${pad(d.getMilliseconds(),3)}`;
}
function appendLine(level, args) {
try {
const msg = args.map(stringifyArg).join(' ');
fs.appendFileSync(LOG_FILE, `[${localTimestamp()}] [${level}] ${msg}\n`);
} catch {
// Darf niemals die eigentliche Konsolen-Ausgabe verhindern
}
}
// Entfernt Zeilen, die älter als MAX_AGE_MS sind. Zeilen ohne erkennbaren
// Zeitstempel (z.B. Fortsetzungszeilen eines mehrzeiligen Stacktraces) werden
// bewusst behalten, um nichts mittendrin abzuschneiden.
function pruneOldLines() {
try {
if (!fs.existsSync(LOG_FILE)) return;
const content = fs.readFileSync(LOG_FILE, 'utf8');
const cutoff = Date.now() - MAX_AGE_MS;
const lines = content.split('\n').filter(line => {
const m = line.match(/^\[([^\]]+)\]/);
if (!m) return true;
const t = new Date(m[1].replace(' ', 'T')).getTime();
return Number.isNaN(t) || t >= cutoff;
});
fs.writeFileSync(LOG_FILE, lines.join('\n'));
} catch (e) {
origError('Konsolen-Log-Aufräumen fehlgeschlagen:', e.message);
}
}
function installConsoleCapture() {
console.log = (...args) => { origLog(...args); appendLine('LOG', args); };
console.error = (...args) => { origError(...args); appendLine('ERROR', args); };
console.warn = (...args) => { origWarn(...args); appendLine('WARN', args); };
pruneOldLines(); // einmal direkt beim Start
setInterval(pruneOldLines, 60 * 60 * 1000); // danach stündlich
}
function getLogFilePath() { return LOG_FILE; }
module.exports = { installConsoleCapture, getLogFilePath, pruneOldLines };