public void Inject <TCarrier>(ISpanContext spanContext, IFormat <TCarrier> format, TCarrier carrier)
{
VerifySupportedFormat(format);
ITextMap implCarrier = GetRealCarrier(carrier);
Trace trace = GetRealSpanContext(spanContext).Trace;
_traceInjector.Inject(trace, implCarrier, (c, key, value) => c.Set(key, value));
}
protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
using (var clientTrace = new ClientTrace(_serviceName, request.Method.ToString()))
{
if (clientTrace.Trace != null)
{
_injector.Inject(clientTrace.Trace, request.Headers, (c, key, value) => c.Add(key, value));
}
return(await TraceHelper.TracedActionAsync(base.SendAsync(request, cancellationToken)));
}
}
protected async override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
Trace trace;
if (!_extractor.TryExtract(request.Headers, (c, key) => c.GetValues(key).FirstOrDefault(), out trace))
{
trace = Trace.Create();
}
Trace.Current = trace;
using (new ServerTrace(_serviceName, request.Method.Method))
{
trace.Record(Annotations.Tag("http.host", request.RequestUri.Host.ToString()));
trace.Record(Annotations.Tag("http.uri", request.RequestUri.ToString()));
trace.Record(Annotations.Tag("http.path", request.RequestUri.AbsolutePath));
var result = await base.SendAsync(request, cancellationToken);
_injector.Inject(trace, result.Headers, (c, key, value) => c.Add(key, value));
return(result);
}
}