metrics := []MetricV2{
			{
				Description: MetricDescription{
					Namespace: nodeMetricNamespace,
					Subsystem: scannerSubsystem,
					Name:      "objects_scanned",
					Help:      "Total number of unique objects scanned since server start",
					Type:      counterMetric,
				},
				Value: float64(globalScannerMetrics.lifetime(scannerMetricScanObject)),
			},
			{
				Description: MetricDescription{

type LockArgs struct {
	// Unique ID of lock/unlock request.
	UID string

	// Resources contains single or multiple entries to be locked/unlocked.
	Resources []string

	// Source contains the line number, function and file name of the code
	// on the client node that requested the lock.
	Source string

	// Owner represents unique ID for this instance, an owner who originally requested

			Type:        "url",
		},
		config.HelpKV{
			Key:         ClientID,
			Description: `unique public identifier for apps e.g. "292085223830.apps.googleusercontent.com"` + defaultHelpPostfix(ClientID),
			Type:        "string",
		},
		config.HelpKV{
			Key:         ClientSecret,
			Description: `secret for the unique public identifier for apps` + defaultHelpPostfix(ClientSecret),
			Sensitive:   true,
			Type:        "string",

		shouldPass bool
	}{
		{testBuckets[0], "unique/", "", "/", 1000, false, resultCases[0], ListObjectVersionsInfo{}, nil, true},
		{testBuckets[0], "unique/folder", "", "/", 1000, false, resultCases[0], ListObjectVersionsInfo{}, nil, true},
		{testBuckets[0], "unique/", "", "", 1000, false, resultCases[1], ListObjectVersionsInfo{}, nil, true},

	}
	return r
}

// EncryptMultiPart encrypts an io.Reader which must be the body of
// multi-part PUT request. It derives an unique encryption key from
// the partID and the object key.
func EncryptMultiPart(r io.Reader, partID int, key ObjectKey) io.Reader {
	partKey := key.DerivePartKey(uint32(partID))
	return EncryptSinglePart(r, ObjectKey(partKey))

	MaximumFileSize int64

	// FileNameFunc specifies the name a new file will take.
	// FileNameFunc must ensure collisions in filenames do not occur.
	// Do not rely on timestamps to be unique, high throughput writes
	// may fall on the same timestamp.
	// Eg.
	// 	2020-03-28_15-00-945-<random-hash>.log
	// When FileNameFunc is not specified, DefaultFilenameFunc will be used.
	FileNameFunc func() string

| jti        | _string_       | Unique identifier for the JWT token.                                                                                                                                                    |

		stats = targetStat{}
	}

	stats.totalEvents++
	list.targetStats[id] = stats
	return
}

type asyncEvent struct {
	ev        Event
	targetSet TargetIDSet
}

// Add - adds unique target to target list.
func (list *TargetList) Add(targets ...Target) error {
	list.Lock()
	defer list.Unlock()

	for _, target := range targets {
		if _, ok := list.targets[target.ID()]; ok {

// according to the AWS S3 signature V2 spec.
func compareSignatureV2(sig1, sig2 string) bool {
	// Decode signature string to binary byte-sequence representation is required
	// as Base64 encoding of a value is not unique:
	// For example "aGVsbG8=" and "aGVsbG8=\r" will result in the same byte slice.
	signature1, err := base64.StdEncoding.DecodeString(sig1)
	if err != nil {
		return false
	}

	// Purge any existing temporary file, okay to ignore errors here.
	defer disk.Delete(context.TODO(), minioMetaBucket, tmpFormat, DeleteOptions{
		Recursive: false,
		Immediate: false,
	})

	// write to unique file.
	if err = disk.WriteAll(context.TODO(), minioMetaBucket, tmpFormat, formatData); err != nil {
		return err
	}

	// Rename file `uuid.json` --> `format.json`.