Function readMetaFile

tsdb/block.go:258–273

(dir string)

func chunkDir(dir string) string { return filepath.Join(dir, "chunks") }

func readMetaFile(dir string) (*BlockMeta, int64, error) {
	b, err := os.ReadFile(filepath.Join(dir, metaFilename))
	if err != nil {
		return nil, 0, err
	}
	var m BlockMeta

	if err := json.Unmarshal(b, &m); err != nil {
		return nil, 0, err
	}
	if m.Version != metaVersion1 {
		return nil, 0, fmt.Errorf("unexpected meta file version %d", m.Version)
	}

	return &m, int64(len(b)), nil
}

func writeMetaFile(logger *slog.Logger, dir string, meta *BlockMeta) (int64, error) {
	meta.Version = metaVersion1