// concurrently, check for it before we
				// write the filler byte.
				select {
				case err := <-doneCh:
					if err != nil {
						write([]byte{1})
						write([]byte(err.Error()))
					} else {
						write([]byte{0})
					}
					return
				default:
				}

				// Response not ready, write a filler byte.
				write([]byte{32})
				if canWrite {
					w.(http.Flusher).Flush()
				}

			rangeHdrs := []string{
				// Read first byte of object
				fmt.Sprintf("bytes=%d-%d", 0, 0),
				// Read second byte of object
				fmt.Sprintf("bytes=%d-%d", 1, 1),
				// Read last byte of object
				fmt.Sprintf("bytes=-%d", 1),
				// Read all but first byte of object
				"bytes=1-",
				// Read first half of object
				fmt.Sprintf("bytes=%d-%d", 0, objLen/2),
				// Read last half of object

	var buffer []byte
	switch size := data.Size(); {
	case size == 0:
		buffer = make([]byte, 1) // Allocate at least a byte to reach EOF
	case size == -1:
		if size := data.ActualSize(); size > 0 && size < fi.Erasure.BlockSize {
			// Account for padding and forced compression overhead and encryption.
			buffer = make([]byte, data.ActualSize()+256+32+32, data.ActualSize()*2+512)
		} else {

	}
	return buf, stat.ModTime().UTC(), err
}

func (s *xlStorage) readMetadata(ctx context.Context, itemPath string) ([]byte, error) {
	return xioutil.WithDeadline[[]byte](ctx, globalDriveConfig.GetMaxTimeout(), func(ctx context.Context) ([]byte, error) {
		buf, _, err := s.readMetadataWithDMTime(ctx, itemPath)
		return buf, err
	})
}

	"k8s.io/client-go/kubernetes"

	"istio.io/api/annotation"
	"istio.io/istio/pkg/config/constants"
)

var annotationPatch = []byte(fmt.Sprintf(
	`{"metadata":{"annotations":{"%s":"%s"}}}`,
	constants.AmbientRedirection,
	constants.AmbientRedirectionEnabled,
))

var annotationRemovePatch = []byte(fmt.Sprintf(
	`{"metadata":{"annotations":{"%s":null}}}`,
	constants.AmbientRedirection,
))

	}

	// Fetch buffer for I/O, returns from the pool if not allocates a new one and returns.
	var buffer []byte
	switch size := data.Size(); {
	case size == 0:
		buffer = make([]byte, 1) // Allocate at least a byte to reach EOF
	case size >= fi.Erasure.BlockSize:
		buffer = globalBytePoolCap.Load().Get()
		defer globalBytePoolCap.Load().Put(buffer)

func (p *xlStorageDiskIDCheck) ReadAll(ctx context.Context, volume string, path string) (buf []byte, err error) {
	ctx, done, err := p.TrackDiskHealth(ctx, storageMetricReadAll, volume, path)
	if err != nil {
		return nil, err
	}
	defer done(&err)

	return xioutil.WithDeadline[[]byte](ctx, globalDriveConfig.GetMaxTimeout(), func(ctx context.Context) (result []byte, err error) {
		return p.storage.ReadAll(ctx, volume, path)
	})
}

}

// AppendFile - append to a file.
func (client *storageRESTClient) AppendFile(ctx context.Context, volume string, path string, buf []byte) error {
	values := make(url.Values)
	values.Set(storageRESTVolume, volume)
	values.Set(storageRESTFilePath, path)
	reader := bytes.NewReader(buf)
	respBody, err := client.call(ctx, storageRESTMethodAppendFile, values, reader, -1)
	defer xhttp.DrainBody(respBody)
	return err
}

			return i
		}
	}
	return -1
}

// AddObjectPart - add a new object part in order.
func (fi *FileInfo) AddObjectPart(partNumber int, partETag string, partSize, actualSize int64, modTime time.Time, idx []byte, checksums map[string]string) {
	partInfo := ObjectPartInfo{
		Number:     partNumber,
		ETag:       partETag,
		Size:       partSize,
		ActualSize: actualSize,
		ModTime:    modTime,
		Index:      idx,

}

func ipstr(ipv6 bool) string {
	if ipv6 {
		return "ipv6"
	}
	return "ipv4"
}

func compareToGolden(t *testing.T, ipv6 bool, name string, actual []string) {
	t.Helper()
	gotBytes := []byte(strings.Join(actual, "\n"))
	goldenFile := filepath.Join("testdata", name+".golden")
	if ipv6 {
		goldenFile = filepath.Join("testdata", name+"_ipv6.golden")
	}
	testutil.CompareContent(t, gotBytes, goldenFile)
}