Custom Runtime node.js - Can't see my custom logs in Google App Engine

Question

We are using Google App Engine Custom Runtime to run our Node.js Serverside code for our mobile application.

HTTP Request logging is working fine, but we are having

Answer 1

I would suggest to use papertrail for logging from google cloud. You can use it with winston-papertrail npm module.

Here is configuration to make it work.

1. Create account on https://papertrailapp.com and you will get host and port to create winston transport.

2. Create winston transport for papertrail using winston-papertrail module.

   import winston from 'winston';
   import expressWinston from 'express-winston';
   //
   // Requiring `winston-papertrail` will expose
   // `winston.transports.Papertrail`
   //
   require('winston-papertrail').Papertrail;
   // create winston transport for Papertrail
   var winstonPapertrail = new winston.transports.Papertrail({
     host: 'logsX.papertrailapp.com',
     port: XXXXX
   });
   

3. Attach the transport to express server for request logging

   app.use(expressWinston.logger({
     transports: [winstonPapertrail],
     meta: true, // optional: control whether you want to log the meta data about the request (default to true)
     msg: "HTTP {{req.method}} {{req.url}}", // optional: customize the default logging message. E.g. "{{res.statusCode}} {{req.method}} {{res.responseTime}}ms {{req.url}}"
     expressFormat: true, // Use the default Express/morgan request formatting. Enabling this will override any msg if true. Will only output colors with colorize set to true
     colorize: true, // Color the text and status code, using the Express/morgan color palette (text: gray, status: default green, 3XX cyan, 4XX yellow, 5XX red).
     ignoreRoute: function (req, res) { return false; } // optional: allows to skip some log messages based on request and/or response
   }));
   

you can also use winstonPapertrail.log('info', 'Any info you want to send to papertrail logs'); for custom logging.

see https://github.com/kenperkins/winston-papertrail for more details.