type WarmBackendGetOpts struct {
	startOffset int64
	length      int64
}

// WarmBackend provides interface to be implemented by remote tier backends
type WarmBackend interface {
	Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error)
	PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error)

			timeToResponse  time.Duration
			timeToFirstByte time.Duration
			outputBytes     int64 = -1 // -1: unknown output bytes
			headerBytes     int64
		)

		tc, ok := r.Context().Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt)
		if ok {
			statusCode = tc.ResponseRecorder.StatusCode
			outputBytes = int64(tc.ResponseRecorder.Size())
			headerBytes = int64(tc.ResponseRecorder.HeaderSize())

	Typeflag byte

	Name     string // Name of file entry
	Linkname string // Target name of link (valid for TypeLink or TypeSymlink)

	Size  int64  // Logical file size in bytes
	Mode  int64  // Permission and mode bits
	Uid   int    // User ID of owner
	Gid   int    // Group ID of owner
	Uname string // User name of owner
	Gname string // Group name of owner

func TestParseCopyPartRangeSpec(t *testing.T) {
	// Test success cases.
	successCases := []struct {
		rangeString string
		offsetBegin int64
		offsetEnd   int64
	}{
		{"bytes=2-5", 2, 5},
		{"bytes=2-9", 2, 9},
		{"bytes=2-2", 2, 2},
		{"bytes=0000-0006", 0, 6},
	}
	objectSize := int64(10)

	for _, successCase := range successCases {
		rs, err := parseCopyPartRangeSpec(successCase.rangeString)
		if err != nil {

	}

	for _, f := range fields {
		checkSchemaField(t, user, f, func(f *schema.Field) {})
	}
}

type (
	ID      int64
	INT     int
	INT8    int8
	INT16   int16
	INT32   int32
	INT64   int64
	UINT    uint
	UINT8   uint8
	UINT16  uint16
	UINT32  uint32
	UINT64  uint64
	FLOAT32 float32
	FLOAT64 float64
	BOOL    bool
	STRING  string

	readers       []io.ReaderAt
	orgReaders    []io.ReaderAt
	dataBlocks    int
	offset        int64
	shardSize     int64
	shardFileSize int64
	buf           [][]byte
	readerToBuf   []int
	stashBuffer   []byte
}

// newParallelReader returns parallelReader.
func newParallelReader(readers []io.ReaderAt, e Erasure, offset, totalLength int64) *parallelReader {
	r2b := make([]int, len(readers))
	for i := range r2b {
		r2b[i] = i
	}

		if err != nil {
			t.Fatalf("%s: <ERROR> %s", instanceType, err)
		}
		_, err = obj.PutObject(context.Background(), "bucket", "newPrefix2", mustGetPutObjReader(t, bytes.NewBufferString(uploadContent), int64(len(uploadContent)), "", ""), opts)
		if err != nil {
			t.Fatalf("%s: <ERROR> %s", instanceType, err)

	bts := make([]byte, 0, v.Msgsize())
	bts, _ = v.MarshalMsg(bts[0:0])
	b.SetBytes(int64(len(bts)))
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		bts, _ = v.MarshalMsg(bts[0:0])
	}
}

func BenchmarkUnmarshalServerSystemConfig(b *testing.B) {
	v := ServerSystemConfig{}
	bts, _ := v.MarshalMsg(nil)
	b.ReportAllocs()
	b.SetBytes(int64(len(bts)))
	b.ResetTimer()
	for i := 0; i < b.N; i++ {

	bts := make([]byte, 0, v.Msgsize())
	bts, _ = v.MarshalMsg(bts[0:0])
	b.SetBytes(int64(len(bts)))
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		bts, _ = v.MarshalMsg(bts[0:0])
	}
}

func BenchmarkUnmarshalBucketMetadata(b *testing.B) {
	v := BucketMetadata{}
	bts, _ := v.MarshalMsg(nil)
	b.ReportAllocs()
	b.SetBytes(int64(len(bts)))
	b.ResetTimer()
	for i := 0; i < b.N; i++ {

		f.ops[0] = s[len(b):]
	} else {
		f.ops = f.ops[1:]
	}
	f.pos += int64(len(b))
	return len(b), nil
}

func (f *testFile) Seek(pos int64, whence int) (int64, error) {
	if pos == 0 && whence == io.SeekCurrent {
		return f.pos, nil
	}
	if len(f.ops) == 0 {
		return 0, errors.New("unexpected Seek operation")
	}
	s, ok := f.ops[0].(int64)
	if !ok {
		return 0, errors.New("unexpected Seek operation")
	}