multiple tries

backend/v3/telemetry/tracing/tracer.go

@@ -0,0 +1,23 @@
+package tracing
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/trace"
+	"go.opentelemetry.io/otel/trace/noop"
+)
+
+type Tracer struct {
+	trace.Tracer
+}
+
+var noopTracer = Tracer{
+	Tracer: noop.NewTracerProvider().Tracer(""),
+}
+
+func (t *Tracer) Start(ctx context.Context, spanName string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	if t.Tracer == nil {
+		return noopTracer.Start(ctx, spanName, opts...)
+	}
+	return t.Tracer.Start(ctx, spanName, opts...)
+}