writes chat logs to a file

chatlogger.js

var fs = require('fs');
var redis = require('redis');
var client = redis.createClient();

client.psubscribe('juggernaut');

client.on('pmessage', function(pattern, channel, msg){
    var message = JSON.parse(msg);
    var data = message.data;

    switch(data.action) {
      case 'join':
        fs.open('chat.log', 'a', 0666, function(err, fd){
          fs.write(fd, Date() + ' - ' + data.username + " joined\n", null, undefined, function (err, written) {});
        });
        break;
      case 'part':
        fs.open('chat.log', 'a', 0666, function(err, fd){
          fs.write(fd, Date() + ' - ' + data.username + " parted\n", null, undefined, function (err, written) {});
        });
        break;
      case 'send_message':
        fs.open('chat.log', 'a', 0666, function(err, fd){
          fs.write(fd, Date() + ' - ' + data.username + ': ' + data.message + "\n", null, undefined, function (err, written) {});
        });
        break;
    }
});