Push log messages collected from coolog to Logentries

coolog_logentries.js

if (LOGENTRIES_APIKEY) {
  var logentries_logger = logentries.logger({
    token: LOGENTRIES_APIKEY
  });

  coolog.on('log', function (severity, args) {
    var _logger
      , le_severity;
    
    if (severity === 'debug') {
      le_severity = 'debug';
    } else if (severity === 'ok') {
      le_severity = 'info';
    } else if (severity === 'info') {
      le_severity = 'info';
    } else if (severity === 'warn') {
      le_severity = 'alert';
    } else if (severity === 'error') {
      le_severity = 'emerg';
    } else {
      le_severity = 'debug';
    }
    
    _logger = logentries_logger[le_severity];
    
    args = [require('os').hostname()].concat(args.map(function (arg) {
      if ('object' === typeof arg) {
        try {
          return JSON.stringify(arg);
        } catch (e) {
          // e.g. circular json structures...
          return util.inspect(arg);
        }
      } else {
        return arg;
      }
    }));
    
    _logger.apply(null, args);
  });
} else {
  logger.warn('################################');
  logger.warn('Logentries API key not provided.');
  logger.warn('################################');
}