How to add multiple transport for parse-server logger? - node.js

Question

I can access to the winston logger exposer by parse-server with let logger = require('parse-server').logger;
I would like to configure several transport file to have separate file with different logging levels like I can do with Winston:
var logger = new (winston.Logger)({
transports: [
new (winston.transports.File)({
name: 'info-file',
filename: 'filelog-info.log',
level: 'info'
}),
new (winston.transports.File)({
name: 'silly-file',
filename: 'filelog-silly.log',
level: 'silly'
})
]
});
I've tried by usgin winston function like:
logger.add(winston.transports.File, { ... });
And with:
winston.configure({
transports: [
new (winston.transports.File)({ filename: 'somefile.log' })
]
});
But it doesn't work.
I also saw this PR https://github.com/parse-community/parse-server/pull/2363 but I coudn't understand how to add these transports from my index.js in parse-server.
Can someone give me some hints? Thanks!
Additional info:
parse-server version: 2.6.2

Answer 1

I was trying to do similar as you. I wanted to add a transport to send logs to loggly.
I think the way to do it, is to use the logger object, that is exported together with the ParseServer object from the parse-server package.
The way how I added the loggly additional transport is the following:
const {ParseServer, logger} = require('parse-server');
const loggly = require('winston-loggly');
const parseApi = new ParseServer({
...
});
logger.adapter.addTransport(new loggly.Loggly({
subdomain: 'my-subdomain',
token: 'myToken',
json: true
}));
I believe this is safe to do, as the logger is exported by the package in the same way as ParseServer.
Hope it helps. Lukas

Answer 2

for future reference (an example how I use winston-mongoDB), I'll just add my way as well:
1) create custom logger adapter
var _WinstonLoggerAdapter = require('parse-server/lib/Adapters/Logger/WinstonLoggerAdapter');
import * as WinstonMongoDb from 'winston-mongodb';
export function createCustomLoggerAdapter(options) {
var winston = new _WinstonLoggerAdapter.WinstonLoggerAdapter(options);
var WinstonMongoDbInstance: any = WinstonMongoDb.MongoDB;
const transport = new WinstonMongoDbInstance({
...options,
collection: 'ServerLog',
level: 'error'
});
winston.addTransport(transport);
return winston;
}
2) use it in parse config
var parseConfig = {
....,
loggerAdapter: createCustomLoggerAdapter({db: databaseUri}),
}