I think is it:
Imports System.Web
Public Class Log4NetHttpModule
Implements IHttpModule
Public Sub Init(ByVal app As HttpApplication) _
Implements IHttpModule.Init
AddHandler app.AuthenticateRequest, _
AddressOf MyAuthenticateRequest
End Sub
Public Sub Dispose() Implements IHttpModule.Dispose
' add clean-up code here if required
End Sub
Public Sub MyAuthenticateRequest(ByVal s As Object, _
ByVal e As EventArgs)
Dim app As HttpApplication
app = CType(s, HttpApplication)
If (app.Request.IsAuthenticated = True) Then
log4net.MDC.Set("UserIdentityName", app.User.Identity.Name)
Else
log4net.MDC.Set("UserIdentityName", "N/A")
End If
End Sub
End Class
I took the skeleton for the class from here:
http://www.devx.com/dotnet/Article/6962/0/page/4
- Ron
--- "Hart, Leo" <[EMAIL PROTECTED]> wrote:
> I am going to try what you have suggested, although I currently know
> nothing about HttpModules (looks like I need to do some reading).
>
> One question (though I'm ashamed I need to ask):
>
> What's the VB.NET equivalent of
>
> public void Init(System.Web.HttpApplication context)
> {
> context.AuthorizeRequest += new
> EventHandler(context_AuthorizeRequest);
> }
>
> I tried:
>
> Public Sub Init(ByVal context As System.Web.HttpApplication)
> AddHandler context.AuthenticateRequest, AddressOf
> context.AuthorizeRequest
> End Sub
>
> But it didn't like that, saying "'AddressOf' operand must be the name
> of
> a method; no parentheses are needed."
>
>
> Thanks,
> Leo
>
>
> -----Original Message-----
> From: Ron Grabowski [mailto:[EMAIL PROTECTED]
> Sent: Thursday, February 10, 2005 9:46 AM
> To: Log4NET User
> Subject: Re: Logging in a Web App (Threads, Sessions and Requests)
>
>
> Have you tried creating a HttpModule and populating the MDC that way?
> There are lot of events you can subscribe to:
>
> http://www.eggheadcafe.com/articles/20030701.asp
>
> One way to do it might be this way:
>
> public class Log4NetHttpModule : System.Web.IHttpModule
> {
> public Log4NetHttpModule()
> {
>
> }
>
> public void Init(System.Web.HttpApplication context)
> {
> context.AuthorizeRequest += new
> EventHandler(context_AuthorizeRequest);
> }
>
> private void context_AuthorizeRequest(object sender, EventArgs e) {
> HttpApplication context = (HttpApplication)sender;
>
> if (context.Request.IsAuthenticated == true)
> {
> log4net.MDC.Set("UserIdentityName", context.User.Identity.Name);
> }
> else
> {
> log4net.MDC.Set("UserIdentityName", "N/A");
> }
> }
>
> public void Dispose()
> {
>
> }
>
> Make sure to add this to your web.config:
>
> <httpModules>
> <add type="Foo.HttpModules.Log4NetHttpModule, Foo"
> name="Log4NetHttpModule" /> </httpModules>
>
> inside of <system.web>
>
> Here is the conversion pattern:
>
> "%5p %d{yyyy-MM-dd hh:mm:ss tt} (%c:%L) - [%X{UserIdentityName}]
> %m%n"
>
> I think NLog supports things like
> ${aspnet-session:variable=MyVariableName} directly in its conversion
> patterns so you wouldn't have to mess with the HttpModule.
>
> - Ron
>
> --- "Hart, Leo" <[EMAIL PROTECTED]> wrote:
>
> > I have a Log4Net problem/situation that I'm sure many of you have
> come
> > across and have (hopefully) overcome. I scoured the 'net for an
> > answer
> > but wasn't able to find exactly what I needed.
> >
> > I'm starting to use Log4Net in my web application and I'm quite
> > pleased with it overall. I was a user of Log4J when I was
> programming
>
> > J2EE apps, so obviously Log4Net is a comfortable fit.
> >
> > I've embedded log statements throughout the various tiers of my
> > enterprise app and it's outputting useful information to my rolling
>
> > log file just fine. The problem is when the app leaves my
> development
> > machine and moves to a production server with multiple users
> hitting
> > it
> > at once. At that point it becomes very difficult to identify which
> > log
> > entries pertain to which users.
> >
> > So obviously I want to embed the session ID and/or the request ID
> in
> > my log entry. The first thing that came to mind was to simply log
> the
> > session/request IDs in the Page_Load/Page_Unload event, but that
> > doesn't
> > work because the other log entries that occur in between Page_Load
> > and
> > Page_Unload won't have that info.
> >
> > The next thing that came to mind was MDC/NDC. The problem with
> that
> > is that MDC/NDC seems to be thread-based and since a given IIS
> server
> > thread can support multiple sessions at once, the sessionID MDC can
> > be
> > overwritten. I realized this fact once I coded the following in my
> > global.asax:
> >
> >
> > Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
> > ' Fires when the session is started
> >
> > log4net.MDC.Set("sessionID", Session.SessionID)
> >
> > m_log.Info("Session " & Session.SessionID & " is starting.")
> > End Sub
> >
> >
> >
> > Sub Session_End(ByVal sender As Object, ByVal e As EventArgs)
> > ' Fires when the session ends
> >
> > log4net.MDC.Remove("sessionID")
> >
> > m_log.Info("Session " & Session.SessionID & " has ended.")
> > End Sub
> >
> >
> >
> > The last approach that came to mind was making the MDC.Set/Remove
> > calls in my ASPX page in the Page_Load/Page_Unload events, but that
>
> > might not
> > work either given that, once again, multiple sessions are in each
> > thread. Things would get especially confusing if I turned on
> logging
> > in
> > not only my presentation tier, but my business tier, my data tier
> and
> > any third party assemblies I'm utilizing.
> >
> > So what do I do? How do I solve this problem? CAN I solve this
> > problem?
> >
> >
> > Thanks for your time...
> > Leo Hart
> >
>
