nodejs redis with kue module init

/**
* Kue Monitor
*/
var kue = require('kue')
var redis = require('redis');
var jf = require("jsonfile")
var path = require("path")

/*
* get user home dir
*/
function getUserHome() {
return process.env[(process.platform == 'win32') ? 'USERPROFILE' : 'HOME'];
}

/**
* set redis credentials .
* Priority :
* 1 VCAP_SERVICES
* 2 user.home/.redis-server.json
* 3 config/redis-server.json
* 4 default as local:6379 , no password
*/
function getCredentials(callback){
if (process.env.VCAP_SERVICES) {
var env = JSON.parse(process.env.VCAP_SERVICES);
return env['redis-2.6'][0].credentials;
} else {
jf.readFile(path.join(getUserHome(),".redis-server.json"),
function(err,data){
console.log("read local redis json file")
if(err){
jf.readFile("./config/redis-server.json", function(err,data){
if(err){
var credentials
credentials.host="127.0.0.1"
credentials.port=6379
credentials.password=''
callback(credentials)
}else{
callback(data["redis-2.6"][0]["credentials"])
}
})
}else{
callback(data["redis-2.6"][0]["credentials"])
}
}) };
}
/**
* create que client
*/
function init(){
getCredentials(function(credentials){
console.log("redis server ...")
console.log(credentials)
kue.redis.createClient = function() {
console.log("host:"+ credentials.host)
console.log("port:"+ credentials.port)
console.log("password:"+ credentials.password)
var client = redis.createClient(credentials.port, credentials.host);
if (credentials.password != '') {
client.auth(credentials.password);
}
return client;
}
mountUI()
})
}

function mountUI(){
kue.app.set('title', 'Redis Que Monitor');
console.log("Monitor Service @ 3030 is started.")
kue.app.listen(3030)
}
init()