| 1 | 'use strict'; |
| 2 | |
| 3 | const Utilities = require('../utilities'); |
| 4 | |
| 5 | /** |
| 6 | * Simple formatter. Outputs a predefined format: |
| 7 | * `[{{_timestamp}}][{{_levelString}}] {{_from}}: {{message}}`; |
| 8 | * |
| 9 | * @memberof Formatters |
| 10 | * @implements IFormatter |
| 11 | * @class Simple |
| 12 | */ |
| 13 | module.exports = class SimpleFormatter { |
| 14 | |
| 15 | constructor(config) { |
| 16 | |
| 17 | /** |
| 18 | * Flag that tells us whether or not to use ANSI color. Defaults to |
| 19 | * false. |
| 20 | * |
| 21 | * @name colorize |
| 22 | * @instance |
| 23 | * @memberof Formatters.Simple |
| 24 | * @type Boolean |
| 25 | * @default false |
| 26 | */ |
| 27 | this.colorize = false; |
| 28 | |
| 29 | Object.assign(this, config || {}); |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * Main entry point, it will read the incoming log object and convert |
| 34 | * it to the output string. |
| 35 | * |
| 36 | * @function format |
| 37 | * @instance |
| 38 | * @memberof Formatters.Simple |
| 39 | * @param {tCologneLog} logObjet the log to format |
| 40 | * @return {String} the formatted object |
| 41 | */ |
| 42 | format(logObject) { |
| 43 | |
| 44 | const date = (new Date(Number(logObject._timestamp) / 1000000)).toISOString(); |
| 45 | const levelString = this._colorize(logObject._levelString, logObject._level); |
| 46 | |
| 47 | return `[${date}][${levelString}] ${logObject._from}: ${logObject.message}`; |
| 48 | } |
| 49 | |
| 50 | _colorize(levelString, level) { |
| 51 | |
| 52 | if (!this.colorize) { |
| 53 | return levelString; |
| 54 | } |
| 55 | |
| 56 | const escapeCode = String.fromCharCode(27); |
| 57 | const color = escapeCode + Utilities.getAnsiCode(Utilities.getLevelAnsi(level)); |
| 58 | const reset = escapeCode + Utilities.getAnsiCode('reset'); |
| 59 | |
| 60 | return color + levelString + reset; |
| 61 | } |
| 62 | }; |