[Bug]: Only primary worker will log in a cluster

[ctaque]

🔎 Search Terms

cluster

The problem

Only logs from the main worker will log when using the same file

"winston": "^3.8.2",
"winston-daily-rotate-file": "^4.7.1"

import 'winston-daily-rotate-file';
import cluster from 'cluster';

const { combine, timestamp, label, printf } = winston.format;

const myFormat = printf(({ level, message, timestamp }) => {

    if (cluster.isWorker) {
        // Access the current cluster's worker
        const currentWorker = cluster.worker;

        return `${timestamp} ${level} [worker: ${currentWorker.process.pid}]: ${message}`;
    } else {
        return `${timestamp} ${level} : ${message}`;
    }
});

const logTransport = new winston.transports.DailyRotateFile({
        filename: 'vad-%DATE%.log',
        datePattern: 'YYYY-MM-DD',
        dirname: '/var/log/vad/',
        zippedArchive: true,
        maxSize: '20m',
        maxFiles: '30d',
        handleExceptions: true,
        handleRejections: true,
    });

export const logger = winston.createLogger({
    format: winston.format.combine(
        winston.format.colorize(),
        winston.format.timestamp(),
        myFormat,
    ),
    transports: [logTransport]
});

What is the best approach for logging in a cluster ?

What version of Winston presents the issue?

v3.8.2

What version of Node are you using?

14

If this worked in a previous version of Winston, which was it?

No response

Minimum Working Example

No response

Additional information

No response