mirror of https://github.com/poanetwork/quorum.git
205 lines
6.5 KiB
Go
205 lines
6.5 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package types
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import (
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"bytes"
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"fmt"
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"io"
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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/common/hexutil"
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"github.com/ethereum/go-ethereum/rlp"
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)
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//go:generate gencodec -type Receipt -field-override receiptMarshaling -out gen_receipt_json.go
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var (
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receiptStatusFailedRLP = []byte{}
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receiptStatusSuccessfulRLP = []byte{0x01}
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)
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const (
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// ReceiptStatusFailed is the status code of a transaction if execution failed.
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ReceiptStatusFailed = uint(0)
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// ReceiptStatusSuccessful is the status code of a transaction if execution succeeded.
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ReceiptStatusSuccessful = uint(1)
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)
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// Receipt represents the results of a transaction.
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type Receipt struct {
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// Consensus fields
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PostState []byte `json:"root"`
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Status uint `json:"status"`
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CumulativeGasUsed *big.Int `json:"cumulativeGasUsed" gencodec:"required"`
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Bloom Bloom `json:"logsBloom" gencodec:"required"`
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Logs []*Log `json:"logs" gencodec:"required"`
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// Implementation fields (don't reorder!)
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TxHash common.Hash `json:"transactionHash" gencodec:"required"`
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ContractAddress common.Address `json:"contractAddress"`
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GasUsed *big.Int `json:"gasUsed" gencodec:"required"`
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}
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type receiptMarshaling struct {
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PostState hexutil.Bytes
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Status hexutil.Uint
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CumulativeGasUsed *hexutil.Big
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GasUsed *hexutil.Big
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}
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// receiptRLP is the consensus encoding of a receipt.
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type receiptRLP struct {
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PostStateOrStatus []byte
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CumulativeGasUsed *big.Int
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Bloom Bloom
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Logs []*Log
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}
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type receiptStorageRLP struct {
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PostStateOrStatus []byte
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CumulativeGasUsed *big.Int
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Bloom Bloom
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TxHash common.Hash
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ContractAddress common.Address
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Logs []*LogForStorage
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GasUsed *big.Int
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}
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// NewReceipt creates a barebone transaction receipt, copying the init fields.
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func NewReceipt(root []byte, failed bool, cumulativeGasUsed *big.Int) *Receipt {
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r := &Receipt{PostState: common.CopyBytes(root), CumulativeGasUsed: new(big.Int).Set(cumulativeGasUsed)}
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if failed {
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r.Status = ReceiptStatusFailed
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} else {
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r.Status = ReceiptStatusSuccessful
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}
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return r
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}
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// EncodeRLP implements rlp.Encoder, and flattens the consensus fields of a receipt
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// into an RLP stream. If no post state is present, byzantium fork is assumed.
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func (r *Receipt) EncodeRLP(w io.Writer) error {
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return rlp.Encode(w, &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs})
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}
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// DecodeRLP implements rlp.Decoder, and loads the consensus fields of a receipt
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// from an RLP stream.
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func (r *Receipt) DecodeRLP(s *rlp.Stream) error {
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var dec receiptRLP
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if err := s.Decode(&dec); err != nil {
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return err
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}
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if err := r.setStatus(dec.PostStateOrStatus); err != nil {
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return err
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}
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r.CumulativeGasUsed, r.Bloom, r.Logs = dec.CumulativeGasUsed, dec.Bloom, dec.Logs
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return nil
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}
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func (r *Receipt) setStatus(postStateOrStatus []byte) error {
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switch {
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case bytes.Equal(postStateOrStatus, receiptStatusSuccessfulRLP):
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r.Status = ReceiptStatusSuccessful
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case bytes.Equal(postStateOrStatus, receiptStatusFailedRLP):
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r.Status = ReceiptStatusFailed
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case len(postStateOrStatus) == len(common.Hash{}):
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r.PostState = postStateOrStatus
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default:
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return fmt.Errorf("invalid receipt status %x", postStateOrStatus)
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}
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return nil
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}
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func (r *Receipt) statusEncoding() []byte {
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if len(r.PostState) == 0 {
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if r.Status == ReceiptStatusFailed {
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return receiptStatusFailedRLP
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}
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return receiptStatusSuccessfulRLP
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}
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return r.PostState
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}
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// String implements the Stringer interface.
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func (r *Receipt) String() string {
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if len(r.PostState) == 0 {
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return fmt.Sprintf("receipt{status=%d cgas=%v bloom=%x logs=%v}", r.Status, r.CumulativeGasUsed, r.Bloom, r.Logs)
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}
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return fmt.Sprintf("receipt{med=%x cgas=%v bloom=%x logs=%v}", r.PostState, r.CumulativeGasUsed, r.Bloom, r.Logs)
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}
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// ReceiptForStorage is a wrapper around a Receipt that flattens and parses the
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// entire content of a receipt, as opposed to only the consensus fields originally.
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type ReceiptForStorage Receipt
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// EncodeRLP implements rlp.Encoder, and flattens all content fields of a receipt
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// into an RLP stream.
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func (r *ReceiptForStorage) EncodeRLP(w io.Writer) error {
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enc := &receiptStorageRLP{
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PostStateOrStatus: (*Receipt)(r).statusEncoding(),
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CumulativeGasUsed: r.CumulativeGasUsed,
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Bloom: r.Bloom,
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TxHash: r.TxHash,
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ContractAddress: r.ContractAddress,
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Logs: make([]*LogForStorage, len(r.Logs)),
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GasUsed: r.GasUsed,
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}
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for i, log := range r.Logs {
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enc.Logs[i] = (*LogForStorage)(log)
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}
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return rlp.Encode(w, enc)
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}
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// DecodeRLP implements rlp.Decoder, and loads both consensus and implementation
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// fields of a receipt from an RLP stream.
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func (r *ReceiptForStorage) DecodeRLP(s *rlp.Stream) error {
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var dec receiptStorageRLP
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if err := s.Decode(&dec); err != nil {
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return err
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}
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if err := (*Receipt)(r).setStatus(dec.PostStateOrStatus); err != nil {
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return err
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}
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// Assign the consensus fields
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r.CumulativeGasUsed, r.Bloom = dec.CumulativeGasUsed, dec.Bloom
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r.Logs = make([]*Log, len(dec.Logs))
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for i, log := range dec.Logs {
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r.Logs[i] = (*Log)(log)
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}
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// Assign the implementation fields
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r.TxHash, r.ContractAddress, r.GasUsed = dec.TxHash, dec.ContractAddress, dec.GasUsed
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return nil
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}
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// Receipts is a wrapper around a Receipt array to implement DerivableList.
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type Receipts []*Receipt
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// Len returns the number of receipts in this list.
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func (r Receipts) Len() int { return len(r) }
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// GetRlp returns the RLP encoding of one receipt from the list.
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func (r Receipts) GetRlp(i int) []byte {
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bytes, err := rlp.EncodeToBytes(r[i])
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if err != nil {
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panic(err)
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}
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return bytes
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}
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