[]string{"bucket"}, nil),
			prometheus.GaugeValue,
			float64(usageInfo.Size),
			bucket,
		)
		ch <- prometheus.MustNewConstMetric(
			prometheus.NewDesc(
				prometheus.BuildFQName(bucketNamespace, "objects", "count"),
				"Total number of objects in a bucket",
				[]string{"bucket"}, nil),
			prometheus.GaugeValue,
			float64(usageInfo.ObjectsCount),
			bucket,
		)
		ch <- prometheus.MustNewConstMetric(