private void OnHostingHttpRequestInStart(object arg)
{
var httpContext = (HttpContext)HttpRequestInStartHttpContextFetcher.Fetch(arg);
if (ShouldIgnore(httpContext))
{
if (_isLogLevelDebugEnabled)
{
Log.Debug("Ignoring request");
}
}
else
{
HttpRequest request = httpContext.Request;
string host = request.Host.Value;
string httpMethod = request.Method?.ToUpperInvariant() ?? "UNKNOWN";
string url = GetUrl(request);
string resourceUrl = UriHelpers.GetRelativeUrl(new Uri(url), tryRemoveIds: true)
.ToLowerInvariant();
SpanContext propagatedContext = ExtractPropagatedContext(request);
Span span = _tracer.StartSpan(HttpRequestInOperationName, propagatedContext)
.SetTag(Tags.InstrumentationName, ComponentName);
IPAddress remoteIp = null;
if (Trace.Tracer.Instance.Settings.AddClientIpToServerSpans)
{
remoteIp = httpContext?.Connection?.RemoteIpAddress;
}
span.DecorateWebServerSpan(null, httpMethod, host, url, remoteIp);
span.SetTag(Tags.InstrumentationName, IntegrationName);
// set analytics sample rate if enabled
var analyticsSampleRate = _tracer.Settings.GetIntegrationAnalyticsSampleRate(IntegrationName, enabledWithGlobalSetting: true);
span.SetMetric(Tags.Analytics, analyticsSampleRate);
Scope scope = _tracer.ActivateSpan(span);
_options.OnRequest?.Invoke(scope.Span, httpContext);
}
}