public async Task <ActionResult> Index()
{
ProfilingSession.Current.AddTag("index");
using (ProfilingSession.Current.Step("Handle Request - /"))
{
Article[] articles;
using (ProfilingSession.Current.Step(() => "Load Data"))
{
articles = await dbContext.Articles.OrderByDescending(a => a.Id)
.Take(10)
.ToArrayAsync();
}
// WebTimingAsync() profiles the wrapped action as a web request timing
var url = this.Request.Scheme + "://" + this.Request.Host + "/home/child";
await ProfilingSession.Current.WebTimingAsync(url, async (correlationId) =>
{
using (var httpClient = new HttpClient())
{
httpClient.DefaultRequestHeaders.Add(CoreProfilerMiddleware.XCorrelationId, correlationId);
var uri = new Uri(url);
var result = await httpClient.GetStringAsync(uri);
}
});
// test profiling execute command asyncrhonously
await dbContext.Database.ExecuteSqlCommandAsync("select * from Articles");
var task1 = dbContext.FindAsync <Article>(100);
var task2 = dbContext.FindAsync <Article>(101);
await task1;
await task2;
using (ProfilingSession.Current.Step("Render View"))
{
return(View());
}
}
}