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https://gitlab.com/pulsechaincom/prysm-pulse.git
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5f76297401
Former-commit-id: 9dfe0415a7809738b7683090d08486d64ca2e4c0 [formerly c8f386658475a6d6a069ab44f63a3d6e39a80ea7] Former-commit-id: 767719430eda75648b408b4f480b25bb68870421
103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
package sharding
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto/sha3"
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"github.com/ethereum/go-ethereum/rlp"
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)
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// Collation base struct.
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type Collation struct {
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header *CollationHeader
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body []byte
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transactions []*types.Transaction
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}
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// CollationHeader base struct.
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type CollationHeader struct {
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data collationHeaderData
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}
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type collationHeaderData struct {
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ShardID *big.Int // the shard ID of the shard.
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ChunkRoot *common.Hash // the root of the chunk tree which identifies collation body.
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Period *big.Int // the period number in which collation to be Pncluded.
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ProposerAddress *common.Address // address of the collation proposer.
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ProposerSignature []byte // the proposer's signature for calculating collation hash.
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}
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// NewCollationHeader initializes a collation header struct.
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func NewCollationHeader(shardID *big.Int, chunkRoot *common.Hash, period *big.Int, proposerAddress *common.Address, proposerSignature []byte) *CollationHeader {
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data := collationHeaderData{
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ShardID: shardID,
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ChunkRoot: chunkRoot,
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Period: period,
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ProposerAddress: proposerAddress,
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ProposerSignature: proposerSignature,
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}
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return &CollationHeader{data}
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}
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// Hash takes the keccak256 of the collation header's contents.
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func (h *CollationHeader) Hash() (hash common.Hash) {
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hw := sha3.NewKeccak256()
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rlp.Encode(hw, h)
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hw.Sum(hash[:0])
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return hash
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}
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// ShardID the collation corresponds to.
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func (h *CollationHeader) ShardID() *big.Int { return h.data.ShardID }
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// Period the collation corresponds to.
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func (h *CollationHeader) Period() *big.Int { return h.data.Period }
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// ChunkRoot of the serialized collation body.
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func (h *CollationHeader) ChunkRoot() *common.Hash { return h.data.ChunkRoot }
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// EncodeRLP gives an encoded representation of the collation header.
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func (h *CollationHeader) EncodeRLP() ([]byte, error) {
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encoded, err := rlp.EncodeToBytes(&h.data)
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if err != nil {
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return nil, err
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}
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return encoded, nil
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}
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// DecodeRLP uses an RLP Stream to populate the data field of a collation header.
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func (h *CollationHeader) DecodeRLP(s *rlp.Stream) error {
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return s.Decode(&h.data)
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}
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// Header returns the collation's header.
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func (c *Collation) Header() *CollationHeader { return c.header }
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// Body returns the collation's byte body.
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func (c *Collation) Body() []byte { return c.body }
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// Transactions returns an array of tx's in the collation.
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func (c *Collation) Transactions() []*types.Transaction { return c.transactions }
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// ProposerAddress is the coinbase addr of the creator for the collation.
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func (c *Collation) ProposerAddress() *common.Address {
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return c.header.data.ProposerAddress
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}
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// AddTransaction adds to the collation's body of tx blobs.
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func (c *Collation) AddTransaction(tx *types.Transaction) {
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// TODO: Include blob serialization instead.
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c.transactions = append(c.transactions, tx)
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}
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// CalculateChunkRoot updates the collation header's chunk root based on the body.
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func (c *Collation) CalculateChunkRoot() {
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// TODO: this needs to be based on blob serialization.
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// For proof of custody we need to split chunks (body) into chunk + salt and
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// take the merkle root of that.
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chunkRoot := common.BytesToHash(c.body)
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c.header.data.ChunkRoot = &chunkRoot
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}
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