HTTPModule to monitor File downloaded

Scenario:
Easy way to see who downloaded what.

Solution:
HTTPModule can help.

Code:

using System;
using System.Web;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;

namespace SPCustomHTTPModule
{
    public class CustomHttpModule :IHttpModule
    {
        public void Init(HttpApplication context)
        {
            context.PostAuthenticateRequest  += ContextPostAuthenticateRequest;
        }

        static void ContextPostAuthenticateRequest(object sender , EventArgs e)
        {
            var app = sender as HttpApplication;
            if (app != null)
            {
                string requesturl = app.Request.Url.ToString();
                if (requesturl.EndsWith(".docx") || requesturl.EndsWith(".pdf"))
                {
                    CreateEntry(requesturl, app.Request.LogonUserIdentity.Name);
                }
            }
        }
        public static void CreateEntry(string fileUrl,string userName)
        {
            const string rootSite = "http://localhost";
            const string listName = "Links";


            using (var site = new SPSite(rootSite))
            {
                using (SPWeb web = site.RootWeb)
                {
                    web.AllowUnsafeUpdates = true;
                    SPList list = web.Lists[listName];

                    SPListItem listItem = list.Items.Add();
                    
                    listItem["Title"] = "File downloaded ";
                    listItem["Comments"] = userName + " downloaded " + SPEncode.UrlEncodeAsUrl(fileUrl);
                    listItem.Update();
                    web.AllowUnsafeUpdates = false;
                }
           }
        }

        public void Dispose() {  }
    }
}

Web.Config( Add to httpModules section):

<add name="SPCustomHTTPModule" type="SPCustomHTTPModule.CustomHttpModule, SPCustomHTTPModule, Version=1.0.0.0, Culture=neutral, PublicKeyToken=a56fc096c595e650" />

Articles:
HTTP Handlers and HTTP Modules Overview

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