server/helpers/logger.ts

   1 // Thanks http://tostring.it/2014/06/23/advanced-logging-with-nodejs/
   2 import * as mkdirp from 'mkdirp'
   3 import * as path from 'path'
   4 import * as winston from 'winston'
   5 import { CONFIG } from '../initializers'
   6
   7 const label = CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT
   8
   9 // Create the directory if it does not exist
  10 mkdirp.sync(CONFIG.STORAGE.LOG_DIR)
  11
  12 // Use object for better performances (~ O(1))
  13 const excludedKeys = {
  14   level: true,
  15   message: true,
  16   splat: true,
  17   timestamp: true,
  18   label: true
  19 }
  20 function keysExcluder (key, value) {
  21   return excludedKeys[key] === true ? undefined : value
  22 }
  23
  24 const loggerFormat = winston.format.printf((info) => {
  25   let additionalInfos = JSON.stringify(info, keysExcluder, 2)
  26   if (additionalInfos === '{}') additionalInfos = ''
  27
  28   return `[${info.label}] ${info.timestamp} ${info.level}: ${info.message} ${additionalInfos}`
  29 })
  30
  31 const timestampFormatter = winston.format.timestamp({
  32   format: 'YYYY-MM-dd HH:mm:ss.SSS'
  33 })
  34 const labelFormatter = winston.format.label({
  35   label
  36 })
  37
  38 const logger = new winston.createLogger({
  39   level: CONFIG.LOG.LEVEL,
  40   transports: [
  41     new winston.transports.File({
  42       filename: path.join(CONFIG.STORAGE.LOG_DIR, 'peertube.log'),
  43       handleExceptions: true,
  44       maxsize: 5242880,
  45       maxFiles: 5,
  46       format: winston.format.combine(
  47         timestampFormatter,
  48         labelFormatter,
  49         winston.format.splat(),
  50         winston.format.json()
  51       )
  52     }),
  53     new winston.transports.Console({
  54       handleExceptions: true,
  55       humanReadableUnhandledException: true,
  56       format: winston.format.combine(
  57         timestampFormatter,
  58         winston.format.splat(),
  59         labelFormatter,
  60         winston.format.colorize(),
  61         loggerFormat
  62       )
  63     })
  64   ],
  65   exitOnError: true
  66 })
  67
  68 // ---------------------------------------------------------------------------
  69
  70 export {
  71   timestampFormatter,
  72   labelFormatter,
  73   loggerFormat,
  74   logger
  75 }