Method Write

ethstorage/data_file.go:192–203

Write the chunk bytes to the file.

(chunkIdx uint64, b []byte)

// Write the chunk bytes to the file.
func (df *DataFile) Write(chunkIdx uint64, b []byte) error {
	if !df.Contains(chunkIdx) {
		return fmt.Errorf("chunk not found")
	}

	if len(b) > int(df.chunkSize) {
		return fmt.Errorf("write data too large")
	}

	_, err := df.file.WriteAt(b, HEADER_SIZE+int64(chunkIdx-df.chunkIdxStart)*int64(df.chunkSize))
	return err
}

// Read the metadata of the kv
func (df *DataFile) ReadMeta(kvIdx uint64) ([]byte, error) {