/// <summary>
/// Executes the MiniProfiler-wrapped middleware.
/// </summary>
/// <param name="context">The <see cref="HttpContext"/> for the current request.</param>
/// <returns>A task that represents the execution of the MiniProfiler-wrapped middleware.</returns>
/// <exception cref="ArgumentNullException">Throws when <paramref name="context"/> is <c>null</c>.</exception>
public async Task Invoke(HttpContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (context.Request.Path.StartsWithSegments(MatchPath, out PathString subPath))
{
// This is a request in the MiniProfiler path (e.g. one of "our" routes), HANDLE THE SITUATION.
await HandleRequest(context, subPath).ConfigureAwait(false);
return;
}
// Otherwise this is an app request, profile it!
if (Options.ShouldProfile?.Invoke(context.Request) ?? true)
{
// Wrap the request in this profiler
var mp = MiniProfiler.Start();
// Always add this profiler's header (and any async requests before it)
using (mp.Step("MiniProfiler Prep"))
{
await SetHeadersAndState(context, mp).ConfigureAwait(false);
}
// Execute the pipe
#pragma warning disable RCS1090 // Call 'ConfigureAwait(false)'.
await _next(context);
#pragma warning restore RCS1090 // Call 'ConfigureAwait(false)'.
// Stop (and record)
await MiniProfiler.StopAsync().ConfigureAwait(false);
}
else
{
// Don't profile, only relay
#pragma warning disable RCS1090 // Call 'ConfigureAwait(false)'.
await _next(context);
#pragma warning restore RCS1090 // Call 'ConfigureAwait(false)'.
}
}