private bool TryGetSupplementalData(out SupplementalActivityData supplementalData)
{
if (_activityInstance == null)
{
supplementalData = null;
return(false);
}
ConditionalWeakTable <object, SupplementalActivityData> supplementalActivityData = s_supplementalActivityData;
return(supplementalActivityData.TryGetValue(_activityInstance, out supplementalData));
}
public static ActivityStub StartNewActivity(string operationName,
ActivityKindStub activityKind,
ActivityContextStub parentContext,
IEnumerable <KeyValuePair <string, string> > tags)
{
if (!DynamicLoader.EnsureInitialized())
{
return(NoOpSingeltons.ActivityStub);
}
DynamicInvokerOld invoker = DynamicLoader.Invoker;
if (invoker.SupportedFeatures.FeatureSet_5000)
{
object activityInstance = invoker.ActivitySource.StartActivity(operationName, activityKind, parentContext, tags);
ActivityStub activityStub = Wrap(activityInstance);
return(activityStub);
}
else if (invoker.SupportedFeatures.FeatureSet_4020)
{
object activityInstance = invoker.Activity.Ctor(operationName);
ActivityStub activityStub = Wrap(activityInstance);
// Older Activity versions do not have a concept of Trace and Span. Instead they have an Id and a RoodId.
// We will generate a parent Id to match the logic employed by older activities so that RoodId acts as a TraceId.
// See:
// https://github.com/dotnet/runtime/blob/7666224cfcfb4349da28f9f7fb1de931528ef208/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs#L39
// https://github.com/dotnet/runtime/blob/7666224cfcfb4349da28f9f7fb1de931528ef208/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs#L358
// https://github.com/dotnet/runtime/blob/7666224cfcfb4349da28f9f7fb1de931528ef208/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs#L405
// https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/ActivityUserGuide.md#id-format
if (parentContext.IsNotInitialized())
{
string parentId = "|" + parentContext.TraceIdHexString + "." + parentContext.SpanIdHexString + "_";
invoker.Activity.SetParentId(activityInstance, parentId);
}
// Internal is the default. For internal, we avoid creating supplemantal data.
if (activityKind != ActivityKindStub.Internal)
{
SupplementalActivityData supplementalData = activityStub.GetOrCreateSupplementalData();
supplementalData.ActivityKind = activityKind;
}
if (tags != null)
{
foreach (KeyValuePair <string, string> tag in tags)
{
invoker.Activity.AddTag(activityInstance, tag.Key, tag.Value);
}
}
object diagnosticSource = invoker.DiagnosticListener.DefaultDiagnosticSource;
invoker.DiagnosticListener.StartActivity(activityInstance, activityInstance);
return(activityStub);
}
else
{
string errMsg = FormatNotSupportedErrorMessage($"{nameof(StartNewActivity)}(..)", "4020", invoker);
throw new NotSupportedException(errMsg);
}
}
