@goldix.org/loggers

Install modules:

npm i --save @goldix.org/loggers @goldix.org/logger-winston-console @goldix.org/logger-winston-elastic

Example with multiple loggers:

const { Loggers }               = require('@goldix.org/loggers');
const { LoggerWinstonConsole }  = require('@goldix.org/logger-winston-console');
const { LoggerWinstonElastic }  = require('@goldix.org/logger-winston-elastic');

Loggers.define('LoggerWinstonConsole', LoggerWinstonConsole);
Loggers.define('LoggerWinstonElastic', LoggerWinstonElastic);

const pools = {
    default: {
      LoggerWinstonElastic: {
        enabled: false,
        //@see https://github.com/vanthome/winston-elasticsearch
        level: 'info',
        indexPrefix: 'example',
        clientOpts: {
          //@see https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/configuration.html
          host: 'http://localhost:9200'
        }
      },
      LoggerWinstonConsole: {
        enabled: true,
        //@see https://github.com/winstonjs/winston/blob/master/docs/transports.md#console-transport
        level: 'info',
        colorize: true,
        timestamp: true,
        prettyPrint: true
      }
    }
};

function transformMessage(level, message, payload, options) {
    message = `${options && options.prefix} ${level} ${message}`;
    if(options.someParameter === 1 && options.loggerClass === 'LoggerWinstonElastic') {
        //Disable write this message to elastic
        options.skip = true;
    }
    if(options.options.someParameter2 === true) {
        payload.memory = process.memoryUsage();
    }
    return {
        level,
        message,
        payload,
        options
    }
}

const loggers = new Loggers({ pools, transformMessage });

const dbLogger = loggers.get('default', { prefix: 'DB', someParameter: 1 })

dbLogger.debug('Users count 12', null, { someParameter2: true });

const httpLogger = loggers.get('default', { transformMessage: (level, message, payload, options) => {
let req = payload.req;
if(req) {
    payload.ip = req.ip;
    delete payload.req;
    if(req.originalUrl === '/favicon.ico') {
        options.skip = true;
    }
}
return {
    level,
    message: `HTTP ${req.method} ${req.originalUrl}`,
    payload,
    options
}
})

app.use((req, res,  next) => {

    next();
})