Logging the request information with each request in winston

Question

I have extended winston-express-request-logger to print out every request, process, error, and user information in my Express/NodeJs application.

But the application actually logs no information regarding the request.

Sample log output:

2018-02-22T11:18:44.871Z - info: root access

I thought the official tutorial (found here) would lead me to a working implementation. Am I missing anything from the tutorials?

The whole application code:

'use strict';

const express = require('express');
const app = express();
const winston = require('winston');

var winstonExRegLogger = require("winston-express-request-logger");
winstonExRegLogger.createLogger({
    transports: [
      
         new (winston.transports.Console)({
            handleExceptions: true,
            timestamp: true,
            level:"info"
        })
    ],

    exitOnError: false
});

function configureApp(app, env) {
    app.use(winstonExRegLogger.requestDetails);
}

app.use(winstonExRegLogger.requestDetails);


var logger = require("winston-express-request-logger").getLogger();

logger.error('testing error log');
logger.info('testing info log');


app.get('/', (req, res) => {
  logger.info('root access');
  res.status(200).send('hello world!');
});


app.get('/home', (req, res) => {
  logger.info('home');
  res.status(200).send('okay');
});

app.post('/p', (req, res) => {
  logger.info('post ni');
  logger.error('in post');
  res.status(200).send('post acknowledged');
});

if (module === require.main) {
  const server = app.listen(process.env.PORT || 8081, () => {
  const port = server.address().port;
  console.log(`App listening on port ${port}`);
  });
}

module.exports = app;

Answer 1

You just need to pass the req object to the logger.info calls, e.g. do

logger.info(req, 'home');

instead of

logger.info('home');

This will give a log line like:

2018-02-22T14:28:21.481Z - info: pId: 25868 - uId: cjdylrofa0000yktbj5rkrtsr - cId: anonymous - cIP: ::1 - cAction: GET /home home
2018-02-22T14:31:56.014Z - info: pId: 33536 - uId: cjdylw9yj0000vktbbqfeubz7 - cId: anonymous - cIP: ::1 - cAction: GET / root access

Which is probably what you want!