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);
}
}