private void OnBeginRequest(object sender, EventArgs eventArgs) { var tracer = Tracer.Instance; if (!tracer.Settings.IsIntegrationEnabled(IntegrationName)) { // integration disabled return; } Scope scope = null; try { if (!TryGetContext(sender, out var httpContext)) { return; } SpanContext propagatedContext = null; if (tracer.ActiveScope == null) { try { // extract propagated http headers var headers = httpContext.Request.Headers.Wrap(); propagatedContext = SpanContextPropagator.Instance.Extract(headers); } catch (Exception ex) { Log.ErrorException("Error extracting propagated HTTP headers.", ex); } } scope = tracer.StartActive(_operationName, propagatedContext); // set analytics sample rate if enabled var analyticsSampleRate = tracer.Settings.GetIntegrationAnalyticsSampleRate(IntegrationName, enabledWithGlobalSetting: true); scope.Span.SetMetric(Tags.Analytics, analyticsSampleRate); httpContext.Items[_httpContextDelegateKey] = HttpContextSpanIntegrationDelegate.CreateAndBegin(httpContext, scope); } catch (Exception ex) { // Dispose here, as the scope won't be in context items and won't get disposed on request end in that case... scope?.Dispose(); Log.ErrorException("Datadog ASP.NET HttpModule instrumentation error", ex); } }
private void OnBeginRequest(object sender, EventArgs eventArgs) { Scope scope = null; try { if (!TryGetContext(sender, out var httpContext)) { return; } SpanContext propagatedContext = null; if (Tracer.Instance.ActiveScope == null) { try { // extract propagated http headers var headers = httpContext.Request.Headers.Wrap(); propagatedContext = SpanContextPropagator.Instance.Extract(headers); } catch (Exception ex) { Log.ErrorException("Error extracting propagated HTTP headers.", ex); } } scope = Tracer.Instance.StartActive(_operationName, propagatedContext); httpContext.Items[_httpContextDelegateKey] = HttpContextSpanIntegrationDelegate.CreateAndBegin(httpContext, scope); } catch (Exception ex) { // Dispose here, as the scope won't be in context items and won't get disposed on request end in that case... scope?.Dispose(); Log.ErrorException("Datadog ASP.NET HttpModule instrumentation error", ex); } }