server/configuration.js

   1 var fs      = require('fs'),
   2     events  = require('events'),
   3     util    = require('util');
   4
   5 var config_filename = 'config.js',
   6     config_dirs = ['/etc/kiwiirc/', __dirname + '/../'],
   7     environment = 'production',
   8     loaded_config = Object.create(null);
   9
  10 var Config = function () {
  11     events.EventEmitter.call(this);
  12 };
  13 util.inherits(Config, events.EventEmitter);
  14
  15 Config.prototype.loadConfig = function () {
  16     var new_config,
  17         conf_filepath,
  18         i;
  19
  20     // Loop through the possible config paths and find a usable one
  21     for (i = 0; i < config_dirs.length; i++) {
  22         conf_filepath = config_dirs[i] + config_filename;
  23
  24         try {
  25             if (fs.lstatSync(conf_filepath).isFile() === true) {
  26                 // Clear the loaded config cache
  27                 delete require.cache[require.resolve(conf_filepath)];
  28
  29                 // Try load the new config file
  30                 new_config = require(conf_filepath);
  31                 break;
  32             }
  33         } catch (e) {
  34             switch (e.code) {
  35             case 'ENOENT':      // No file/dir
  36                 break;
  37             default:
  38                 console.log('An error occured parsing the config file ' + config_dirs[i] + config_filename + ': ' + e.message);
  39                 return false;
  40             }
  41             continue;
  42         }
  43     }
  44
  45     if (new_config) {
  46         loaded_config = new_config;
  47         global.config = new_config[environment] || {};
  48         this.emit('loaded');
  49         return loaded_config;
  50     } else {
  51         return false;
  52     }
  53 };
  54
  55
  56
  57 Config.prototype.setEnvironment = function (new_environment) {
  58     environment = new_environment;
  59 };
  60
  61 // Get the current config. Optionally for a different environment than currently set
  62 Config.prototype.get = function (specific_environment) {
  63     specific_environment = specific_environment || environment;
  64
  65     return loaded_config[specific_environment] || {};
  66 };
  67
  68 module.exports = new Config();