HotROD OTEL exporter

tracing.go

func createOtelExporter(exporterType string) (sdktrace.SpanExporter, error) {
	var exporter sdktrace.SpanExporter
	var err error
	switch exporterType {
	case "jaeger":
		exporter, err = jaeger.New(
			jaeger.WithCollectorEndpoint(),
		)
	case "otlp":
		client := otlptracehttp.NewClient(
			otlptracehttp.WithInsecure(),
		)
		exporter, err = otlptrace.New(context.Background(), client)
	case "stdout":
		exporter, err = stdouttrace.New()
	default:
		return nil, fmt.Errorf("unrecognized exporter type %s", exporterType)
	}
	return exporter, err
}