metricsData *metricsV3Collection
}

var (
	globalMetricsV3CollectorPaths []collectorPath
	globalMetricsV3Once           sync.Once
)

func newMetricsV3Server(auth func(h http.Handler) http.Handler) *metricsV3Server {
	registry := prometheus.NewRegistry()
	metricGroups := newMetricGroups(registry)
	globalMetricsV3Once.Do(func() {
		globalMetricsV3CollectorPaths = metricGroups.collectorPaths
	})
	return &metricsV3Server{

		Subject:   s.accessKey,
		Issuer:    "prometheus",
	})

	token, err := jwt.SignedString([]byte(s.secretKey))
	c.Assert(err, nil)

	for _, cpath := range globalMetricsV3CollectorPaths {
		request, err := newTestSignedRequest(http.MethodGet, s.endPoint+minioReservedBucketPath+metricsV3Path+string(cpath),
			0, nil, s.accessKey, s.secretKey, s.signer)
		c.Assert(err, nil)