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Add withdrawals to Block

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Includes:
* restricted/types/withdrawal.go
* Additions to restricted/types/blocks.go

Note that I have not currently included withdrawal_gen.go, which
does not appear on the surface to be necessar,y but that may
require adjustment if testing shows otherwise.
This commit is contained in:
Austin Roberts 2023-01-25 15:11:59 -06:00
parent 06632b4360
commit 920ed764db
3 changed files with 153 additions and 26 deletions
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2
go.mod
View File

@ -1,6 +1,6 @@
module github.com/openrelayxyz/plugeth-utils
go 1.18
go 1.19
require (
github.com/btcsuite/btcd/btcec/v2 v2.2.0

105
restricted/types/block.go
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@ -63,13 +63,14 @@ func (n *BlockNonce) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("BlockNonce", input, n[:])
}
//go:generate gencodec -type Header -field-override headerMarshaling -out gen_header_json.go
//go:generate go run github.com/fjl/gencodec -type Header -field-override headerMarshaling -out gen_header_json.go
//go:generate go run ../../rlp/rlpgen -type Header -out gen_header_rlp.go
// Header represents a block header in the Ethereum blockchain.
type Header struct {
ParentHash core.Hash `json:"parentHash" gencodec:"required"`
UncleHash core.Hash `json:"sha3Uncles" gencodec:"required"`
Coinbase core.Address `json:"miner" gencodec:"required"`
Coinbase core.Address `json:"miner"`
Root core.Hash `json:"stateRoot" gencodec:"required"`
TxHash core.Hash `json:"transactionsRoot" gencodec:"required"`
ReceiptHash core.Hash `json:"receiptsRoot" gencodec:"required"`
@ -85,6 +86,15 @@ type Header struct {
// BaseFee was added by EIP-1559 and is ignored in legacy headers.
BaseFee *big.Int `json:"baseFeePerGas" rlp:"optional"`
// WithdrawalsHash was added by EIP-4895 and is ignored in legacy headers.
WithdrawalsHash *core.Hash `json:"withdrawalsRoot" rlp:"optional"`
/*
TODO (MariusVanDerWijden) Add this field once needed
// Random was added during the merge and contains the BeaconState randomness
Random core.Hash `json:"random" rlp:"optional"`
*/
}
// field type overrides for gencodec
@ -113,6 +123,7 @@ func (h *Header) Size() float64 {
return headerSize + float64(len(h.Extra)+(h.Difficulty.BitLen()+h.Number.BitLen())/8)
}
// SanityCheck checks a few basic things -- these checks are way beyond what
// any 'sane' production values should hold, and can mainly be used to prevent
// that the unbounded fields are stuffed with junk data to add processing
@ -138,9 +149,12 @@ func (h *Header) SanityCheck() error {
}
// EmptyBody returns true if there is no additional 'body' to complete the header
// that is: no transactions and no uncles.
// that is: no transactions, no uncles and no withdrawals.
func (h *Header) EmptyBody() bool {
if h.WithdrawalsHash == nil {
return h.TxHash == EmptyRootHash && h.UncleHash == EmptyUncleHash
}
return h.TxHash == EmptyRootHash && h.UncleHash == EmptyUncleHash && *h.WithdrawalsHash == EmptyRootHash
}
// EmptyReceipts returns true if there are no receipts for this header/block.
@ -153,6 +167,7 @@ func (h *Header) EmptyReceipts() bool {
type Body struct {
Transactions []*Transaction
Uncles []*Header
Withdrawals []*Withdrawal `rlp:"optional"`
}
// Block represents an entire block in the Ethereum blockchain.
@ -160,15 +175,12 @@ type Block struct {
header *Header
uncles []*Header
transactions Transactions
withdrawals Withdrawals
// caches
hash atomic.Value
size atomic.Value
// Td is used by package core to store the total difficulty
// of the chain up to and including the block.
td *big.Int
// These fields are used by package eth to track
// inter-peer block relay.
ReceivedAt time.Time
@ -180,6 +192,7 @@ type extblock struct {
Header *Header
Txs []*Transaction
Uncles []*Header
Withdrawals []*Withdrawal `rlp:"optional"`
}
// NewBlock creates a new block. The input data is copied,
@ -190,7 +203,7 @@ type extblock struct {
// are ignored and set to values derived from the given txs, uncles
// and receipts.
func NewBlock(header *Header, txs []*Transaction, uncles []*Header, receipts []*Receipt, hasher TrieHasher) *Block {
b := &Block{header: CopyHeader(header), td: new(big.Int)}
b := &Block{header: CopyHeader(header)}
// TODO: panic if len(txs) != len(receipts)
if len(txs) == 0 {
@ -221,6 +234,28 @@ func NewBlock(header *Header, txs []*Transaction, uncles []*Header, receipts []*
return b
}
// NewBlockWithWithdrawals creates a new block with withdrawals. The input data
// is copied, changes to header and to the field values will not
// affect the block.
//
// The values of TxHash, UncleHash, ReceiptHash and Bloom in header
// are ignored and set to values derived from the given txs, uncles
// and receipts.
func NewBlockWithWithdrawals(header *Header, txs []*Transaction, uncles []*Header, receipts []*Receipt, withdrawals []*Withdrawal, hasher TrieHasher) *Block {
b := NewBlock(header, txs, uncles, receipts, hasher)
if withdrawals == nil {
b.header.WithdrawalsHash = nil
} else if len(withdrawals) == 0 {
b.header.WithdrawalsHash = &EmptyRootHash
} else {
h := DeriveSha(Withdrawals(withdrawals), hasher)
b.header.WithdrawalsHash = &h
}
return b.WithWithdrawals(withdrawals)
}
// NewBlockWithHeader creates a block with the given header data. The
// header data is copied, changes to header and to the field values
// will not affect the block.
@ -245,6 +280,9 @@ func CopyHeader(h *Header) *Header {
cpy.Extra = make([]byte, len(h.Extra))
copy(cpy.Extra, h.Extra)
}
if h.WithdrawalsHash != nil {
*cpy.WithdrawalsHash = *h.WithdrawalsHash
}
return &cpy
}
@ -255,8 +293,8 @@ func (b *Block) DecodeRLP(s *rlp.Stream) error {
if err := s.Decode(&eb); err != nil {
return err
}
b.header, b.uncles, b.transactions = eb.Header, eb.Uncles, eb.Txs
b.size.Store(float64(rlp.ListSize(size)))
b.header, b.uncles, b.transactions, b.withdrawals = eb.Header, eb.Uncles, eb.Txs, eb.Withdrawals
b.size.Store(rlp.ListSize(size))
return nil
}
@ -266,6 +304,7 @@ func (b *Block) EncodeRLP(w io.Writer) error {
Header: b.header,
Txs: b.transactions,
Uncles: b.uncles,
Withdrawals: b.withdrawals,
})
}
@ -308,21 +347,25 @@ func (b *Block) BaseFee() *big.Int {
return new(big.Int).Set(b.header.BaseFee)
}
func (b *Block) Withdrawals() Withdrawals {
return b.withdrawals
}
func (b *Block) Header() *Header { return CopyHeader(b.header) }
// Body returns the non-header content of the block.
func (b *Block) Body() *Body { return &Body{b.transactions, b.uncles} }
func (b *Block) Body() *Body { return &Body{b.transactions, b.uncles, b.withdrawals} }
// Size returns the true RLP encoded storage size of the block, either by encoding
// and returning it, or returning a previsouly cached value.
func (b *Block) Size() float64 {
// and returning it, or returning a previously cached value.
func (b *Block) Size() uint64 {
if size := b.size.Load(); size != nil {
return size.(float64)
return size.(uint64)
}
c := writeCounter(0)
rlp.Encode(&c, b)
b.size.Store(float64(c))
return float64(c)
b.size.Store(uint64(c))
return uint64(c)
}
// SanityCheck can be used to prevent that unbounded fields are
@ -331,7 +374,7 @@ func (b *Block) SanityCheck() error {
return b.header.SanityCheck()
}
type writeCounter float64
type writeCounter uint64
func (c *writeCounter) Write(b []byte) (int, error) {
*c += writeCounter(len(b))
@ -354,6 +397,7 @@ func (b *Block) WithSeal(header *Header) *Block {
header: &cpy,
transactions: b.transactions,
uncles: b.uncles,
withdrawals: b.withdrawals,
}
}
@ -371,6 +415,15 @@ func (b *Block) WithBody(transactions []*Transaction, uncles []*Header) *Block {
return block
}
// WithWithdrawals sets the withdrawal contents of a block, does not return a new block.
func (b *Block) WithWithdrawals(withdrawals []*Withdrawal) *Block {
if withdrawals != nil {
b.withdrawals = make([]*Withdrawal, len(withdrawals))
copy(b.withdrawals, withdrawals)
}
return b
}
// Hash returns the keccak256 hash of b's header.
// The hash is computed on the first call and cached thereafter.
func (b *Block) Hash() core.Hash {
@ -383,3 +436,21 @@ func (b *Block) Hash() core.Hash {
}
type Blocks []*Block
// HeaderParentHashFromRLP returns the parentHash of an RLP-encoded
// header. If 'header' is invalid, the zero hash is returned.
func HeaderParentHashFromRLP(header []byte) core.Hash {
// parentHash is the first list element.
listContent, _, err := rlp.SplitList(header)
if err != nil {
return core.Hash{}
}
parentHash, _, err := rlp.SplitString(listContent)
if err != nil {
return core.Hash{}
}
if len(parentHash) != 32 {
return core.Hash{}
}
return core.BytesToHash(parentHash)
}

56
restricted/types/withdrawal.go Normal file
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@ -0,0 +1,56 @@
// 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 types
import (
"bytes"
"github.com/openrelayxyz/plugeth-utils/core"
"github.com/openrelayxyz/plugeth-utils/restricted/hexutil"
"github.com/openrelayxyz/plugeth-utils/restricted/rlp"
)
//go:generate go run github.com/fjl/gencodec -type Withdrawal -field-override withdrawalMarshaling -out gen_withdrawal_json.go
//go:generate go run ../../rlp/rlpgen -type Withdrawal -out gen_withdrawal_rlp.go
// Withdrawal represents a validator withdrawal from the consensus layer.
type Withdrawal struct {
Index uint64 `json:"index"` // monotonically increasing identifier issued by consensus layer
Validator uint64 `json:"validatorIndex"` // index of validator associated with withdrawal
Address core.Address `json:"address"` // target address for withdrawn ether
Amount uint64 `json:"amount"` // value of withdrawal in Gwei
}
// field type overrides for gencodec
type withdrawalMarshaling struct {
Index hexutil.Uint64
Validator hexutil.Uint64
Amount hexutil.Uint64
}
// Withdrawals implements DerivableList for withdrawals.
type Withdrawals []*Withdrawal
// Len returns the length of s.
func (s Withdrawals) Len() int { return len(s) }
// EncodeIndex encodes the i'th withdrawal to w. Note that this does not check for errors
// because we assume that *Withdrawal will only ever contain valid withdrawals that were either
// constructed by decoding or via public API in this package.
func (s Withdrawals) EncodeIndex(i int, w *bytes.Buffer) {
rlp.Encode(w, s[i])
}