Servidor en Node Js

index.js
var server = require ("./server");
var router = require ("./routers");
var requestHandlers = require ("./requestHandlers");

var handle ={}
handle ["/"] = requestHandlers.raiz;
handle ["/iniciar"] = requestHandlers.iniciar;
handle ["/busca"] = requestHandlers.busca;
handle ["/subir"] = requestHandlers.subir;

server.inicio (router.route,handle);


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server.js

var http=require ("http");
var url =require ("url");

function inicio (route,handle){
    function onRequest (request, response){
        var pathname =url.parse(request.url).pathname;
        console.log("Peticion para "+pathname+ " recibida.");

        route (handle,pathname,response);
    }
    http.createServer(onRequest).listen (8888);
    console.log ("Server Running");
}

exports.inicio=inicio;

****************************************************************************************

routers.js
function route (handle,pathname,response){

    console.log ("Rutear peticion a "+pathname );

    if (typeof handle[pathname] === 'function'){
        //return handle  [pathname]();
                  handle  [pathname](response);

    } else{
        console.log ("No hay manipulador para "+pathname);
        response.writeHead (404,{"Content-Type":"text/html"});
        response.write("404 no encontado");
        response.end()
        //return "404 no encontrado";
    }

}
exports.route =route;


****************************************************************************************


requestHandlers.js

var exec =require ("child_process").exec;

function raiz(response){
    console.log ("Manip. raiz / ");
    html (response,"raiz");
    //return "raiz /";
}

function iniciar (response){
    console.log ("Manip. iniciar ");

    exec ("ls -lah", function (error, stdout,stderr) {
        html (response,stdout);
    }); ;
}

function busca (response){
    console.log ("Manip.busca");
    exec ("find /",
    {timeout:10000,maxBuffer:20000*1024},
    function (error,stdout, stderr){
        html(response,stdout);
    });
}

function subir (response){
    console.log ("Manip. subir ");
    html (response,"sube");
    //return "Hola subir";
}

//Funciones auxiliares
function html(response,msg){
    response.writeHead ( 200 , {"Content-Type": "text/html"});
    response.write (msg);
    response.end();
}

exports.raiz=raiz;
exports.iniciar =iniciar;
exports.busca=busca;
exports.subir =subir;