r := rand.New(rand.NewSource(time.Now().UnixNano()))

	retryCtx, cancel := context.WithTimeout(ctx, timeout)
	defer cancel()

	for {
		select {
		case <-retryCtx.Done():
			// Caller context canceled or we timedout,
			// return false anyways for both situations.
			return false
		default:
			if lm.lock(id, source, isWriteLock) {
				return true
			}

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.

// Make sure to bump the internode version at storage-rest-common.go
type RawFileInfo struct {
	// Content of entire xl.meta (may contain data depending on what was requested by the caller.
	Buf []byte `msg:"b,allownil"`
}

// FileInfo - represents file stat information.
// The above means that any added/deleted fields are incompatible.

// UpdateWorkers at the end of this function leaves n goroutines waiting for
// transition tasks
func (t *transitionState) UpdateWorkers(n int) {
	t.mu.Lock()
	defer t.mu.Unlock()
	if t.objAPI == nil { // Init hasn't been called yet.
		return
	}
	t.updateWorkers(n)
}

func (t *transitionState) updateWorkers(n int) {
	for t.numWorkers < n {
		go t.worker(t.objAPI)
		t.numWorkers++
	}

	for t.numWorkers > n {

	}

	// There are two possibilities:
	// - We use a KMS -> There must be non-empty key ID and a KMS data key.
	// - We use a K/V -> There must be no key ID and no KMS data key.
	// Otherwise, the caller has passed an invalid argument combination.
	if keyID == "" && len(kmsKey) != 0 {
		logger.CriticalIf(context.Background(), errors.New("The key ID must not be empty if a KMS data key is present"))
	}

	if d := atomic.LoadInt64(&l.responseDelay); d != 0 {
		time.Sleep(time.Duration(d))
	}

	l.mutex.Lock()
	defer l.mutex.Unlock()
	if len(args.UID) != 0 {
		return false, fmt.Errorf("ForceUnlock called with non-empty UID: %s", args.UID)
	}
	delete(l.lockMap, args.Resources[0]) // Remove the lock (irrespective of write or read lock)
	reply = true
	return reply, nil

			if typ&os.ModeSymlink == os.ModeSymlink && fi.IsDir() {
				continue
			}

			typ = fi.Mode() & os.ModeType
		}
		if err = fn(string(name), typ); err == errDoneForNow {
			// fn() requested to return by caller.
			return nil
		}
	}

	return err
}

// Return count entries at the directory dirPath and all entries
// if count is set to -1

		if errors.Is(ctx.Err(), context.DeadlineExceeded) {
			return ctx.Err()
		}
		return nil
	default:
		// log channel is full, do not wait and return
		// an error immediately to the caller
		atomic.AddInt64(&h.totalMessages, 1)
		atomic.AddInt64(&h.failedMessages, 1)
		return errors.New("log buffer full")
	}
	return nil
}

// SendFromStore - reads the log from store and sends it to kafka.

func (s *xlStorage) ReadAll(ctx context.Context, volume string, path string) (buf []byte, err error) {
	// Specific optimization to avoid re-read from the drives for `format.json`
	// in-case the caller is a network operation.
	if volume == minioMetaBucket && path == formatConfigFile {
		s.RLock()
		formatData := make([]byte, len(s.formatData))
		copy(formatData, s.formatData)
		s.RUnlock()

	return valid
}

// isTierNameInUse returns tier type and true if there exists a remote tier by
// name tierName, otherwise returns madmin.Unsupported and false. N B this
// function is meant for internal use, where the caller is expected to take
// appropriate locks.
func (config *TierConfigMgr) isTierNameInUse(tierName string) (madmin.TierType, bool) {
	if t, ok := config.Tiers[tierName]; ok {
		return t.Type, true
	}