API Server: Fix extracting jaeger remote trace from incoming request (#93998)

pkg/apiserver/endpoints/filters/jaeger_tracing.go

@@ -0,0 +1,17 @@
+package filters
+
+import (
+	"net/http"
+
+	jaegerpropagator "go.opentelemetry.io/contrib/propagators/jaeger"
+	"go.opentelemetry.io/otel/propagation"
+)
+
+// WithExtractJaegerTrace tries to extract remote trace/span from incoming request.
+func WithExtractJaegerTrace(handler http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+		propagator := jaegerpropagator.Jaeger{}
+		ctx := propagator.Extract(req.Context(), propagation.HeaderCarrier(req.Header))
+		handler.ServeHTTP(w, req.WithContext(ctx))
+	})
+}