Method ReadChunk

ethstorage/data_shard.go:122–127

ReadChunk read the encoded data from storage and decode it.

(kvIdx uint64, chunkIdx uint64, commit common.Hash)

// ReadChunk read the encoded data from storage and decode it.
func (ds *DataShard) ReadChunk(kvIdx uint64, chunkIdx uint64, commit common.Hash) ([]byte, error) {
	return ds.readChunkWith(kvIdx, chunkIdx, func(cdata []byte, chunkIdx uint64) []byte {
		encodeKey := calcEncodeKey(commit, chunkIdx, ds.dataFiles[0].miner)
		return decodeChunk(ds.chunkSize, cdata, ds.dataFiles[0].encodeType, encodeKey)
	})
}

// readChunkWith read the encoded chunk from storage with a decoder.
func (ds *DataShard) readChunkWith(kvIdx uint64, chunkIdx uint64, decoder func([]byte, uint64) []byte) ([]byte, error) {