}

// listMetrics - returns a handler that lists all the metrics that could be
// returned for the requested path.
//
// FIXME: It currently only lists `minio_` prefixed metrics.
func (h *metricsV3Server) listMetrics(path string) http.Handler {
	// First collect all matching MetricsGroup's
	matchingMG := make(map[collectorPath]*MetricsGroup)

		return madmin.ReplicateAddStatus{}, err
	}

	// For this `add` API, either all clusters must be empty or the local
	// cluster must be the only one having some buckets.
	if localHasBuckets && nonLocalPeerWithBuckets != "" {
		return madmin.ReplicateAddStatus{}, errSRInvalidRequest(errors.New("only one cluster may have data when configuring site replication"))
	}

	if !localHasBuckets && nonLocalPeerWithBuckets != "" {

		// Objects matching prefixes should not leave delete markers,
		// dramatically reduces namespace pollution while keeping the
		// benefits of replication, make sure to apply version suspension
		// only at bucket level instead.
		VersionSuspended: globalBucketVersioningSys.Suspended(bucket),
	})
	if err != nil && !isErrVersionNotFound(err) { // VersionNotFound would be reported by pool that object version is missing on.

		return nil, config.ErrInvalidNumberOfErasureEndpoints(nil).Msg(msg)
	}

	var setSize uint64
	// Custom set drive count allows to override automatic distribution.
	// only meant if you want to further optimize drive distribution.
	if setDriveCount > 0 {
		msg := fmt.Sprintf("Invalid set drive count. Acceptable values for %d number drives are %d", commonSize, setCounts)
		var found bool

	query.Set("X-Amz-Expires", strconv.FormatInt(expires, 10))
	query.Set("X-Amz-SignedHeaders", "host")
	query.Set("X-Amz-Credential", credential)
	query.Set("X-Amz-Content-Sha256", unsignedPayload)

	// "host" is the only header required to be signed for Presigned URLs.
	extractedSignedHeaders := make(http.Header)
	extractedSignedHeaders.Set("host", req.Host)

	queryStr := strings.ReplaceAll(query.Encode(), "+", "%20")

		for j := 0; j < setLen; j++ {
			format.Erasure.Sets[i][j] = mustGetUUID()
		}
	}
	return format
}

// Returns format Erasure version after reading `format.json`, returns
// successfully the version only if the backend is Erasure.
func formatGetBackendErasureVersion(b []byte) (string, error) {
	meta := &formatMetaV1{}
	if err := json.Unmarshal(b, meta); err != nil {
		return "", err
	}

	// after Pod annotated, another update event will be triggered.
	assertPodAnnotated(t, client, pod)

	// Assert expected calls actually made
	fs.AssertExpectations(t)

	// unlabelling the namespace should cause only one RemovePodFromMesh to happen
	fs.On("RemovePodFromMesh",
		ctx,
		mock.Anything,
	).Once().Return(nil)

	// unlabel the namespace
	labelsPatch := []byte(fmt.Sprintf(`{"metadata":{"labels":{"%s":null}}}`,

// Writer is a concurrency-safe writer with file rotation.
type Writer struct {
	// opts are the configuration options for this Writer
	opts Options

	// f is the currently open file used for appends.
	// Writes to f are only synchronized once Close() is called,
	// or when files are being rotated.
	f *os.File

	pw *xioutil.PipeWriter
	pr *xioutil.PipeReader
}

// Write writes p into the current file, rotating if necessary.

			return
		}
		for _, op := range ops {
			switch op {
			case madmin.CredentialsUpdateType:
				if !globalSiteReplicationSys.isEnabled() {
					// credentials update is possible only in bucket replication. User will never
					// know the site replicator creds.
					tgt.Credentials = target.Credentials
					tgt.TargetBucket = target.TargetBucket
					tgt.Secure = target.Secure

				)
				if err != nil {
					configLogIf(ctx, fmt.Errorf("Unable to initialize DNS config for %s: %w",
						globalDomainNames, err))
				}
			}
		}
	}

	// Bucket federation is 'true' only when IAM assets are not namespaced
	// per tenant and all tenants interested in globally available users
	// if namespace was requested such as specifying etcdPathPrefix then