public override PropagationContext Extract <T>(PropagationContext context, T carrier, Func <T, string, IEnumerable <string> > getter)
{
if (this.defaultContext)
{
return(context);
}
IEnumerable <string> id = getter(carrier, this.idHeaderName);
if (id.Count() <= 0)
{
return(context);
}
var traceparentParsed = TraceContextPropagator.TryExtractTraceparent(id.First(), out var traceId, out var spanId, out var traceoptions);
if (!traceparentParsed)
{
return(context);
}
string tracestate = string.Empty;
IEnumerable <string> tracestateCollection = getter(carrier, this.stateHeaderName);
if (tracestateCollection?.Any() ?? false)
{
TraceContextPropagator.TryExtractTracestate(tracestateCollection.ToArray(), out tracestate);
}
return(new PropagationContext(
new ActivityContext(traceId, spanId, traceoptions, tracestate),
context.Baggage));
}
public void CanParseExampleFromSpec()
{
var headers = new Dictionary <string, string>
{
{ TraceParent, $"00-{TraceId}-{SpanId}-01" },
{ TraceState, $"congo=lZWRzIHRoNhcm5hbCBwbGVhc3VyZS4,rojo=00-{TraceId}-00f067aa0ba902b7-01" },
};
var f = new TraceContextPropagator();
var ctx = f.Extract(default, headers, Getter);
public void InjectExtract_TextMap_Ok()
{
var carrier = new TextMapCarrier();
var spanContextShim = new SpanContextShim(new SpanContext(ActivityTraceId.CreateRandom(), ActivitySpanId.CreateRandom(), ActivityTraceFlags.None));
var format = new TraceContextPropagator();
var tracer = TracerProvider.Default.GetTracer(TracerName);
var shim = new TracerShim(tracer, format);
// first inject
shim.Inject(spanContextShim, BuiltinFormats.TextMap, carrier);
// then extract
var extractedSpanContext = shim.Extract(BuiltinFormats.TextMap, carrier);
AssertOpenTracerSpanContextEqual(spanContextShim, extractedSpanContext);
}
/// <summary>
/// Extracts the specified tracer.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="tracer">The tracer.</param>
/// <param name="headers">The headers.</param>
/// <returns></returns>
public static ActivityContext Extract(this IReceivedMessageInternal message, ActivitySource tracer,
IStandardHeaders headers)
{
TextMapPropagator propagator = new TraceContextPropagator();
var parentContext = propagator.Extract(default, message.Headers, ExtractTraceContextFromBasicProperties);