make golang workaround more clear

DataDog · Nov 25, 2024 · a0d2cfb · a0d2cfb
1 parent 920ec93
commit a0d2cfb
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/utils/build/docker/golang/parametric/otel.go b/utils/build/docker/golang/parametric/otel.go
@@ -49,6 +49,9 @@ func (s *apmClientServer) OtelStartSpan(args OtelStartSpanArgs) (OtelStartSpanRe
 	}
 	var otelOpts []otel_trace.SpanStartOption
 	if args.SpanKind != nil {
+		// SpanKindUnspecified is not supported by the parametric interface.
+		// SpanKind needs to be remapped (incremented by 1) to match the expected value golang value. 
+		// https://github.com/open-telemetry/opentelemetry-go/blob/e98ef1bfdb4cc413a019ebdb64988e17bb331942/trace/span.go#L120
 		otelOpts = append(otelOpts, otel_trace.WithSpanKind(otel_trace.ValidateSpanKind(otel_trace.SpanKind(*args.SpanKind + 1))))
 	}
 	if t := args.Timestamp; t != nil {