testCases := []struct {
		desc              string
		src               io.Reader
		size              int64
		actualSize        int64
		md5hex, sha256hex string
		err               error
	}{
		0: {
			desc:       "Success, no checksum verification provided.",
			src:        bytes.NewReader([]byte("abcd")),
			size:       4,
			actualSize: 4,
		},
		{
			desc:       "Failure md5 mismatch.",

	return &minioCollector{
		desc: prometheus.NewDesc("minio_stats", "Statistics exposed by MinIO server", nil, nil),
	}
}

// minioCollector is the Custom Collector
type minioCollector struct {
	desc *prometheus.Desc
}

// Describe sends the super-set of all possible descriptors of metrics
func (c *minioCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

type minioResourceCollector struct {
	metricsGroups []*MetricsGroupV2
	desc          *prometheus.Desc
}

// Describe sends the super-set of all possible descriptors of metrics
func (c *minioResourceCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

// Collect is called by the Prometheus registry when collecting metrics.

			Code:           "XMinioStorageVersionMismatch",
			Description:    desc,
			HTTPStatusCode: http.StatusUpgradeRequired,
		}, r.URL)
	case strings.HasPrefix(r.URL.Path, adminPathPrefix):
		var desc string
		version := extractAPIVersion(r)
		switch version {
		case "v1", madmin.AdminAPIVersionV2:

	for metricName, mv := range m.values {
		desc := m.descriptors[metricName]
		promDesc := desc.toPromDesc(namePrefix, extraLabels)
		for _, v := range mv {
			// labelValues is in the same order as the variable labels in the
			// descriptor.
			labelValues := make([]string, 0, len(v.Labels))
			for _, k := range desc.VariableLabels {
				labelValues = append(labelValues, v.Labels[k])
			}

		return
	}
	if dsc := mustReplicate(ctx, bucket, object, getMustReplicateOptions(metadata, "", "", replication.ObjectReplicationType, ObjectOptions{})); dsc.ReplicateAny() {
		metadata[ReservedMetadataPrefixLower+ReplicationTimestamp] = UTCNow().Format(time.RFC3339Nano)
		metadata[ReservedMetadataPrefixLower+ReplicationStatus] = dsc.PendingStatus()
	}

				})
				if err != nil {
					return nil, err
				}
			}
			if ndjson {
				return buf.Bytes(), nil
			}
			var msi map[string]interface{}
			dec := json.NewDecoder(buf)
			// Use number to preserve integers.
			dec.UseNumber()
			err = dec.Decode(&msi)
			if err != nil {
				return nil, err
			}
			b, err = json.MarshalIndent(msi, "", "  ")
			if err != nil {
				return nil, err
			}

	}
	if !set.CreateStringSet(groups...).Contains(group) {
		c.Fatalf("created group not present!")
	}
	groupInfo, err := s.adm.GetGroupDescription(ctx, group)
	if err != nil {
		c.Fatalf("group desc err: %v", err)
	}
	c.Assert(groupInfo.Name, group)
	c.Assert(set.CreateStringSet(groupInfo.Members...), set.CreateStringSet(accessKey))
	c.Assert(groupInfo.Policy, policy)

	respBody, err := client.call(ctx, storageRESTMethodReadVersion, values, nil, -1)
	if err != nil {
		return fi, err
	}
	defer xhttp.DrainBody(respBody)

	dec := msgpNewReader(respBody)
	defer readMsgpReaderPoolPut(dec)

	err = fi.DecodeMsg(dec)
	return fi, err
}

// ReadXL - reads all contents of xl.meta of a file.

		if err != nil {
			return objInfo.ETag
		}
	}

	// As per AWS S3 Spec, ETag for SSE-C encrypted objects need not be MD5Sum of the data.
	// Since server side copy with same source and dest just replaces the ETag, we save
	// encrypted content MD5Sum as ETag for both SSE-C and SSE-KMS, we standardize the ETag
	// encryption across SSE-C and SSE-KMS, and only return last 32 bytes for SSE-C