go-ethereum/beacon/engine/types.go

320 lines
12 KiB
Go

// Copyright 2022 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package engine
import (
"fmt"
"math/big"
"slices"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/trie"
)
// PayloadVersion denotes the version of PayloadAttributes used to request the
// building of the payload to commence.
type PayloadVersion byte
var (
PayloadV1 PayloadVersion = 0x1
PayloadV2 PayloadVersion = 0x2
PayloadV3 PayloadVersion = 0x3
)
//go:generate go run github.com/fjl/gencodec -type PayloadAttributes -field-override payloadAttributesMarshaling -out gen_blockparams.go
// PayloadAttributes describes the environment context in which a block should
// be built.
type PayloadAttributes struct {
Timestamp uint64 `json:"timestamp" gencodec:"required"`
Random common.Hash `json:"prevRandao" gencodec:"required"`
SuggestedFeeRecipient common.Address `json:"suggestedFeeRecipient" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BeaconRoot *common.Hash `json:"parentBeaconBlockRoot"`
}
// JSON type overrides for PayloadAttributes.
type payloadAttributesMarshaling struct {
Timestamp hexutil.Uint64
}
//go:generate go run github.com/fjl/gencodec -type ExecutableData -field-override executableDataMarshaling -out gen_ed.go
// ExecutableData is the data necessary to execute an EL payload.
type ExecutableData struct {
ParentHash common.Hash `json:"parentHash" gencodec:"required"`
FeeRecipient common.Address `json:"feeRecipient" gencodec:"required"`
StateRoot common.Hash `json:"stateRoot" gencodec:"required"`
ReceiptsRoot common.Hash `json:"receiptsRoot" gencodec:"required"`
LogsBloom []byte `json:"logsBloom" gencodec:"required"`
Random common.Hash `json:"prevRandao" gencodec:"required"`
Number uint64 `json:"blockNumber" gencodec:"required"`
GasLimit uint64 `json:"gasLimit" gencodec:"required"`
GasUsed uint64 `json:"gasUsed" gencodec:"required"`
Timestamp uint64 `json:"timestamp" gencodec:"required"`
ExtraData []byte `json:"extraData" gencodec:"required"`
BaseFeePerGas *big.Int `json:"baseFeePerGas" gencodec:"required"`
BlockHash common.Hash `json:"blockHash" gencodec:"required"`
Transactions [][]byte `json:"transactions" gencodec:"required"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
BlobGasUsed *uint64 `json:"blobGasUsed"`
ExcessBlobGas *uint64 `json:"excessBlobGas"`
}
// JSON type overrides for executableData.
type executableDataMarshaling struct {
Number hexutil.Uint64
GasLimit hexutil.Uint64
GasUsed hexutil.Uint64
Timestamp hexutil.Uint64
BaseFeePerGas *hexutil.Big
ExtraData hexutil.Bytes
LogsBloom hexutil.Bytes
Transactions []hexutil.Bytes
BlobGasUsed *hexutil.Uint64
ExcessBlobGas *hexutil.Uint64
}
//go:generate go run github.com/fjl/gencodec -type ExecutionPayloadEnvelope -field-override executionPayloadEnvelopeMarshaling -out gen_epe.go
type ExecutionPayloadEnvelope struct {
ExecutionPayload *ExecutableData `json:"executionPayload" gencodec:"required"`
BlockValue *big.Int `json:"blockValue" gencodec:"required"`
BlobsBundle *BlobsBundleV1 `json:"blobsBundle"`
Override bool `json:"shouldOverrideBuilder"`
}
type BlobsBundleV1 struct {
Commitments []hexutil.Bytes `json:"commitments"`
Proofs []hexutil.Bytes `json:"proofs"`
Blobs []hexutil.Bytes `json:"blobs"`
}
// JSON type overrides for ExecutionPayloadEnvelope.
type executionPayloadEnvelopeMarshaling struct {
BlockValue *hexutil.Big
}
type PayloadStatusV1 struct {
Status string `json:"status"`
LatestValidHash *common.Hash `json:"latestValidHash"`
ValidationError *string `json:"validationError"`
}
type TransitionConfigurationV1 struct {
TerminalTotalDifficulty *hexutil.Big `json:"terminalTotalDifficulty"`
TerminalBlockHash common.Hash `json:"terminalBlockHash"`
TerminalBlockNumber hexutil.Uint64 `json:"terminalBlockNumber"`
}
// PayloadID is an identifier of the payload build process
type PayloadID [8]byte
// Version returns the payload version associated with the identifier.
func (b PayloadID) Version() PayloadVersion {
return PayloadVersion(b[0])
}
// Is returns whether the identifier matches any of provided payload versions.
func (b PayloadID) Is(versions ...PayloadVersion) bool {
return slices.Contains(versions, b.Version())
}
func (b PayloadID) String() string {
return hexutil.Encode(b[:])
}
func (b PayloadID) MarshalText() ([]byte, error) {
return hexutil.Bytes(b[:]).MarshalText()
}
func (b *PayloadID) UnmarshalText(input []byte) error {
err := hexutil.UnmarshalFixedText("PayloadID", input, b[:])
if err != nil {
return fmt.Errorf("invalid payload id %q: %w", input, err)
}
return nil
}
type ForkChoiceResponse struct {
PayloadStatus PayloadStatusV1 `json:"payloadStatus"`
PayloadID *PayloadID `json:"payloadId"`
}
type ForkchoiceStateV1 struct {
HeadBlockHash common.Hash `json:"headBlockHash"`
SafeBlockHash common.Hash `json:"safeBlockHash"`
FinalizedBlockHash common.Hash `json:"finalizedBlockHash"`
}
func encodeTransactions(txs []*types.Transaction) [][]byte {
var enc = make([][]byte, len(txs))
for i, tx := range txs {
enc[i], _ = tx.MarshalBinary()
}
return enc
}
func decodeTransactions(enc [][]byte) ([]*types.Transaction, error) {
var txs = make([]*types.Transaction, len(enc))
for i, encTx := range enc {
var tx types.Transaction
if err := tx.UnmarshalBinary(encTx); err != nil {
return nil, fmt.Errorf("invalid transaction %d: %v", i, err)
}
txs[i] = &tx
}
return txs, nil
}
// ExecutableDataToBlock constructs a block from executable data.
// It verifies that the following fields:
//
// len(extraData) <= 32
// uncleHash = emptyUncleHash
// difficulty = 0
// if versionedHashes != nil, versionedHashes match to blob transactions
//
// and that the blockhash of the constructed block matches the parameters. Nil
// Withdrawals value will propagate through the returned block. Empty
// Withdrawals value must be passed via non-nil, length 0 value in params.
func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash, beaconRoot *common.Hash) (*types.Block, error) {
txs, err := decodeTransactions(params.Transactions)
if err != nil {
return nil, err
}
if len(params.ExtraData) > 32 {
return nil, fmt.Errorf("invalid extradata length: %v", len(params.ExtraData))
}
if len(params.LogsBloom) != 256 {
return nil, fmt.Errorf("invalid logsBloom length: %v", len(params.LogsBloom))
}
// Check that baseFeePerGas is not negative or too big
if params.BaseFeePerGas != nil && (params.BaseFeePerGas.Sign() == -1 || params.BaseFeePerGas.BitLen() > 256) {
return nil, fmt.Errorf("invalid baseFeePerGas: %v", params.BaseFeePerGas)
}
var blobHashes = make([]common.Hash, 0, len(txs))
for _, tx := range txs {
blobHashes = append(blobHashes, tx.BlobHashes()...)
}
if len(blobHashes) != len(versionedHashes) {
return nil, fmt.Errorf("invalid number of versionedHashes: %v blobHashes: %v", versionedHashes, blobHashes)
}
for i := 0; i < len(blobHashes); i++ {
if blobHashes[i] != versionedHashes[i] {
return nil, fmt.Errorf("invalid versionedHash at %v: %v blobHashes: %v", i, versionedHashes, blobHashes)
}
}
// Only set withdrawalsRoot if it is non-nil. This allows CLs to use
// ExecutableData before withdrawals are enabled by marshaling
// Withdrawals as the json null value.
var withdrawalsRoot *common.Hash
if params.Withdrawals != nil {
h := types.DeriveSha(types.Withdrawals(params.Withdrawals), trie.NewStackTrie(nil))
withdrawalsRoot = &h
}
header := &types.Header{
ParentHash: params.ParentHash,
UncleHash: types.EmptyUncleHash,
Coinbase: params.FeeRecipient,
Root: params.StateRoot,
TxHash: types.DeriveSha(types.Transactions(txs), trie.NewStackTrie(nil)),
ReceiptHash: params.ReceiptsRoot,
Bloom: types.BytesToBloom(params.LogsBloom),
Difficulty: common.Big0,
Number: new(big.Int).SetUint64(params.Number),
GasLimit: params.GasLimit,
GasUsed: params.GasUsed,
Time: params.Timestamp,
BaseFee: params.BaseFeePerGas,
Extra: params.ExtraData,
MixDigest: params.Random,
WithdrawalsHash: withdrawalsRoot,
ExcessBlobGas: params.ExcessBlobGas,
BlobGasUsed: params.BlobGasUsed,
ParentBeaconRoot: beaconRoot,
}
block := types.NewBlockWithHeader(header).WithBody(types.Body{Transactions: txs, Uncles: nil, Withdrawals: params.Withdrawals})
if block.Hash() != params.BlockHash {
return nil, fmt.Errorf("blockhash mismatch, want %x, got %x", params.BlockHash, block.Hash())
}
return block, nil
}
// BlockToExecutableData constructs the ExecutableData structure by filling the
// fields from the given block. It assumes the given block is post-merge block.
func BlockToExecutableData(block *types.Block, fees *big.Int, sidecars []*types.BlobTxSidecar) *ExecutionPayloadEnvelope {
data := &ExecutableData{
BlockHash: block.Hash(),
ParentHash: block.ParentHash(),
FeeRecipient: block.Coinbase(),
StateRoot: block.Root(),
Number: block.NumberU64(),
GasLimit: block.GasLimit(),
GasUsed: block.GasUsed(),
BaseFeePerGas: block.BaseFee(),
Timestamp: block.Time(),
ReceiptsRoot: block.ReceiptHash(),
LogsBloom: block.Bloom().Bytes(),
Transactions: encodeTransactions(block.Transactions()),
Random: block.MixDigest(),
ExtraData: block.Extra(),
Withdrawals: block.Withdrawals(),
BlobGasUsed: block.BlobGasUsed(),
ExcessBlobGas: block.ExcessBlobGas(),
}
bundle := BlobsBundleV1{
Commitments: make([]hexutil.Bytes, 0),
Blobs: make([]hexutil.Bytes, 0),
Proofs: make([]hexutil.Bytes, 0),
}
for _, sidecar := range sidecars {
for j := range sidecar.Blobs {
bundle.Blobs = append(bundle.Blobs, hexutil.Bytes(sidecar.Blobs[j][:]))
bundle.Commitments = append(bundle.Commitments, hexutil.Bytes(sidecar.Commitments[j][:]))
bundle.Proofs = append(bundle.Proofs, hexutil.Bytes(sidecar.Proofs[j][:]))
}
}
return &ExecutionPayloadEnvelope{ExecutionPayload: data, BlockValue: fees, BlobsBundle: &bundle, Override: false}
}
// ExecutionPayloadBodyV1 is used in the response to GetPayloadBodiesByHashV1 and GetPayloadBodiesByRangeV1
type ExecutionPayloadBodyV1 struct {
TransactionData []hexutil.Bytes `json:"transactions"`
Withdrawals []*types.Withdrawal `json:"withdrawals"`
}
// Client identifiers to support ClientVersionV1.
const (
ClientCode = "GE"
ClientName = "go-ethereum"
)
// ClientVersionV1 contains information which identifies a client implementation.
type ClientVersionV1 struct {
Code string `json:"code"`
Name string `json:"name"`
Version string `json:"version"`
Commit string `json:"commit"`
}
func (v *ClientVersionV1) String() string {
return fmt.Sprintf("%s-%s-%s-%s", v.Code, v.Name, v.Version, v.Commit)
}