private void Application_EndRequest(object sender, EventArgs e)
{
AspNetTelemetryCorrelationEventSource.Log.TraceCallback("Application_EndRequest");
var context = ((HttpApplication)sender).Context;
// EndRequest does it's best effort to notify that request has ended
// BeginRequest has never been called
if (!context.Items.Contains(BeginCalledFlag))
{
// Activity has never been started
var activity = ActivityHelper.CreateRootActivity(context, ParseHeaders);
ActivityHelper.StopAspNetActivity(activity, context.Items);
}
else
{
var activity = (Activity)context.Items[ActivityHelper.ActivityKey];
// try to stop activity if it's in the Current stack
// stop all running Activities on the way
if (!ActivityHelper.StopAspNetActivity(activity, context.Items))
{
// perhaps we attempted to restore the Activity before
var restoredActivity = (Activity)context.Items[ActivityHelper.RestoredActivityKey];
if (restoredActivity != null)
{
// if so, report it
ActivityHelper.StopRestoredActivity(restoredActivity, context);
}
// Activity we created was lost let's report it
if (activity != null)
{
ActivityHelper.StopLostActivity(activity, context);
}
}
}
}
private void Application_PreRequestHandlerExecute(object sender, EventArgs e)
{
AspNetTelemetryCorrelationEventSource.Log.TraceCallback("Application_PreRequestHandlerExecute");
ActivityHelper.RestoreActivityIfNeeded(((HttpApplication)sender).Context.Items);
}
