generator-swagapi/app/templates/_logger.js

Yeoman generator for swagger-based express application.

/*eslint no-unused-vars: [2, {"args": "after-used", "argsIgnorePattern": "^encoding$"}]*/
'use strict';
var config = require('config');
var winston = require('winston');
winston.emitErrs = true;

var fileLogLevel = config.get('logging.file.loglevel');
var consoleLogLevel = config.get('logging.console.loglevel');

// debug which is only set via env overrides all other specified
// settings as it is usually a last resort approach!
if (config.has('debug') && config.get('debug')) {
    fileLogLevel = 'debug';
    consoleLogLevel = 'debug';
}

var transports = [
    new winston.transports.File({
        level: fileLogLevel,
        filename: 'all-logs.log',
        handleExceptions: true,
        json: true,
        maxsize: 5242880, //5MB
        maxFiles: 5,
        colorize: false
    })];

if (process.env.NODE_ENV === 'dev') {
    transports.push(
        new winston.transports.Console({
            level: consoleLogLevel,
            handleExceptions: true,
            json: false,
            colorize: true
        }));
}

var logger = new winston.Logger({
    transports: transports,
    exitOnError: false
});

module.exports = logger;
module.exports.stream = {
    write: function (message, encoding) {
        logger.info(message);
    }
};