17f0b11942
1. fix typos
2. methods recevier of struct should be same
3. comments improve
(cherry picked from commit 1ba9795395)
315 lines
11 KiB
Go
315 lines
11 KiB
Go
// Copyright 2014 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 core
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
"strings"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
|
"github.com/ethereum/go-ethereum/common/math"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
)
|
|
|
|
//go:generate gencodec -type Genesis -field-override genesisSpecMarshaling -out gen_genesis.go
|
|
//go:generate gencodec -type GenesisAccount -field-override genesisAccountMarshaling -out gen_genesis_account.go
|
|
|
|
var errGenesisNoConfig = errors.New("genesis has no chain configuration")
|
|
|
|
// Genesis specifies the header fields, state of a genesis block. It also defines hard
|
|
// fork switch-over blocks through the chain configuration.
|
|
type Genesis struct {
|
|
Config *params.ChainConfig `json:"config"`
|
|
Nonce uint64 `json:"nonce"`
|
|
Timestamp uint64 `json:"timestamp"`
|
|
ParentHash common.Hash `json:"parentHash"`
|
|
ExtraData []byte `json:"extraData"`
|
|
GasLimit uint64 `json:"gasLimit" gencodec:"required"`
|
|
Difficulty *big.Int `json:"difficulty" gencodec:"required"`
|
|
Mixhash common.Hash `json:"mixHash"`
|
|
Coinbase common.Address `json:"coinbase"`
|
|
Alloc GenesisAlloc `json:"alloc" gencodec:"required"`
|
|
}
|
|
|
|
// GenesisAlloc specifies the initial state that is part of the genesis block.
|
|
type GenesisAlloc map[common.Address]GenesisAccount
|
|
|
|
// GenesisAccount is an account in the state of the genesis block.
|
|
type GenesisAccount struct {
|
|
Code []byte `json:"code,omitempty"`
|
|
Storage map[common.Hash]common.Hash `json:"storage,omitempty"`
|
|
Balance *big.Int `json:"balance" gencodec:"required"`
|
|
Nonce uint64 `json:"nonce,omitempty"`
|
|
}
|
|
|
|
// field type overrides for gencodec
|
|
type genesisSpecMarshaling struct {
|
|
Nonce math.HexOrDecimal64
|
|
Timestamp math.HexOrDecimal64
|
|
ExtraData hexutil.Bytes
|
|
GasLimit math.HexOrDecimal64
|
|
Difficulty *math.HexOrDecimal256
|
|
Alloc map[common.UnprefixedAddress]GenesisAccount
|
|
}
|
|
type genesisAccountMarshaling struct {
|
|
Code hexutil.Bytes
|
|
Balance *math.HexOrDecimal256
|
|
Nonce math.HexOrDecimal64
|
|
}
|
|
|
|
// GenesisMismatchError is raised when trying to overwrite an existing
|
|
// genesis block with an incompatible one.
|
|
type GenesisMismatchError struct {
|
|
Stored, New common.Hash
|
|
}
|
|
|
|
func (e *GenesisMismatchError) Error() string {
|
|
return fmt.Sprintf("database already contains an incompatible genesis block (have %x, new %x)", e.Stored[:8], e.New[:8])
|
|
}
|
|
|
|
// SetupGenesisBlock writes or updates the genesis block in db.
|
|
// The block that will be used is:
|
|
//
|
|
// genesis == nil genesis != nil
|
|
// +------------------------------------------
|
|
// db has no genesis | main-net default | genesis
|
|
// db has genesis | from DB | genesis (if compatible)
|
|
//
|
|
// The stored chain configuration will be updated if it is compatible (i.e. does not
|
|
// specify a fork block below the local head block). In case of a conflict, the
|
|
// error is a *params.ConfigCompatError and the new, unwritten config is returned.
|
|
//
|
|
// The returned chain configuration is never nil.
|
|
func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig, common.Hash, error) {
|
|
if genesis != nil && genesis.Config == nil {
|
|
return params.AllProtocolChanges, common.Hash{}, errGenesisNoConfig
|
|
}
|
|
|
|
// Just commit the new block if there is no stored genesis block.
|
|
stored := GetCanonicalHash(db, 0)
|
|
if (stored == common.Hash{}) {
|
|
if genesis == nil {
|
|
log.Info("Writing default main-net genesis block")
|
|
genesis = DefaultGenesisBlock()
|
|
} else {
|
|
log.Info("Writing custom genesis block")
|
|
}
|
|
block, err := genesis.Commit(db)
|
|
return genesis.Config, block.Hash(), err
|
|
}
|
|
|
|
// Check whether the genesis block is already written.
|
|
if genesis != nil {
|
|
block, _ := genesis.ToBlock()
|
|
hash := block.Hash()
|
|
if hash != stored {
|
|
return genesis.Config, block.Hash(), &GenesisMismatchError{stored, hash}
|
|
}
|
|
}
|
|
|
|
// Get the existing chain configuration.
|
|
newcfg := genesis.configOrDefault(stored)
|
|
storedcfg, err := GetChainConfig(db, stored)
|
|
if err != nil {
|
|
if err == ErrChainConfigNotFound {
|
|
// This case happens if a genesis write was interrupted.
|
|
log.Warn("Found genesis block without chain config")
|
|
err = WriteChainConfig(db, stored, newcfg)
|
|
}
|
|
return newcfg, stored, err
|
|
}
|
|
// Special case: don't change the existing config of a non-mainnet chain if no new
|
|
// config is supplied. These chains would get AllProtocolChanges (and a compat error)
|
|
// if we just continued here.
|
|
if genesis == nil && stored != params.MainNetGenesisHash {
|
|
return storedcfg, stored, nil
|
|
}
|
|
|
|
// Check config compatibility and write the config. Compatibility errors
|
|
// are returned to the caller unless we're already at block zero.
|
|
height := GetBlockNumber(db, GetHeadHeaderHash(db))
|
|
if height == missingNumber {
|
|
return newcfg, stored, fmt.Errorf("missing block number for head header hash")
|
|
}
|
|
compatErr := storedcfg.CheckCompatible(newcfg, height)
|
|
if compatErr != nil && height != 0 && compatErr.RewindTo != 0 {
|
|
return newcfg, stored, compatErr
|
|
}
|
|
return newcfg, stored, WriteChainConfig(db, stored, newcfg)
|
|
}
|
|
|
|
func (g *Genesis) configOrDefault(ghash common.Hash) *params.ChainConfig {
|
|
switch {
|
|
case g != nil:
|
|
return g.Config
|
|
case ghash == params.MainNetGenesisHash:
|
|
return params.MainnetChainConfig
|
|
case ghash == params.TestNetGenesisHash:
|
|
return params.TestnetChainConfig
|
|
default:
|
|
return params.AllProtocolChanges
|
|
}
|
|
}
|
|
|
|
// ToBlock creates the block and state of a genesis specification.
|
|
func (g *Genesis) ToBlock() (*types.Block, *state.StateDB) {
|
|
db, _ := ethdb.NewMemDatabase()
|
|
statedb, _ := state.New(common.Hash{}, db)
|
|
for addr, account := range g.Alloc {
|
|
statedb.AddBalance(addr, account.Balance)
|
|
statedb.SetCode(addr, account.Code)
|
|
statedb.SetNonce(addr, account.Nonce)
|
|
for key, value := range account.Storage {
|
|
statedb.SetState(addr, key, value)
|
|
}
|
|
}
|
|
root := statedb.IntermediateRoot(false)
|
|
head := &types.Header{
|
|
Nonce: types.EncodeNonce(g.Nonce),
|
|
Time: new(big.Int).SetUint64(g.Timestamp),
|
|
ParentHash: g.ParentHash,
|
|
Extra: g.ExtraData,
|
|
GasLimit: new(big.Int).SetUint64(g.GasLimit),
|
|
Difficulty: g.Difficulty,
|
|
MixDigest: g.Mixhash,
|
|
Coinbase: g.Coinbase,
|
|
Root: root,
|
|
}
|
|
if g.GasLimit == 0 {
|
|
head.GasLimit = params.GenesisGasLimit
|
|
}
|
|
if g.Difficulty == nil {
|
|
head.Difficulty = params.GenesisDifficulty
|
|
}
|
|
return types.NewBlock(head, nil, nil, nil), statedb
|
|
}
|
|
|
|
// Commit writes the block and state of a genesis specification to the database.
|
|
// The block is committed as the canonical head block.
|
|
func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) {
|
|
block, statedb := g.ToBlock()
|
|
if _, err := statedb.CommitTo(db, false); err != nil {
|
|
return nil, fmt.Errorf("cannot write state: %v", err)
|
|
}
|
|
if err := WriteTd(db, block.Hash(), block.NumberU64(), g.Difficulty); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := WriteBlock(db, block); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := WriteBlockReceipts(db, block.Hash(), block.NumberU64(), nil); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := WriteCanonicalHash(db, block.Hash(), block.NumberU64()); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := WriteHeadBlockHash(db, block.Hash()); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := WriteHeadHeaderHash(db, block.Hash()); err != nil {
|
|
return nil, err
|
|
}
|
|
config := g.Config
|
|
if config == nil {
|
|
config = params.AllProtocolChanges
|
|
}
|
|
return block, WriteChainConfig(db, block.Hash(), config)
|
|
}
|
|
|
|
// MustCommit writes the genesis block and state to db, panicking on error.
|
|
// The block is committed as the canonical head block.
|
|
func (g *Genesis) MustCommit(db ethdb.Database) *types.Block {
|
|
block, err := g.Commit(db)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return block
|
|
}
|
|
|
|
// GenesisBlockForTesting creates and writes a block in which addr has the given wei balance.
|
|
func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big.Int) *types.Block {
|
|
g := Genesis{Alloc: GenesisAlloc{addr: {Balance: balance}}}
|
|
return g.MustCommit(db)
|
|
}
|
|
|
|
// DefaultGenesisBlock returns the Ethereum main net genesis block.
|
|
func DefaultGenesisBlock() *Genesis {
|
|
return &Genesis{
|
|
Config: params.MainnetChainConfig,
|
|
Nonce: 66,
|
|
ExtraData: hexutil.MustDecode("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"),
|
|
GasLimit: 5000,
|
|
Difficulty: big.NewInt(17179869184),
|
|
Alloc: decodePrealloc(mainnetAllocData),
|
|
}
|
|
}
|
|
|
|
// DefaultTestnetGenesisBlock returns the Ropsten network genesis block.
|
|
func DefaultTestnetGenesisBlock() *Genesis {
|
|
return &Genesis{
|
|
Config: params.TestnetChainConfig,
|
|
Nonce: 66,
|
|
ExtraData: hexutil.MustDecode("0x3535353535353535353535353535353535353535353535353535353535353535"),
|
|
GasLimit: 16777216,
|
|
Difficulty: big.NewInt(1048576),
|
|
Alloc: decodePrealloc(testnetAllocData),
|
|
}
|
|
}
|
|
|
|
// DefaultRinkebyGenesisBlock returns the Rinkeby network genesis block.
|
|
func DefaultRinkebyGenesisBlock() *Genesis {
|
|
return &Genesis{
|
|
Config: params.RinkebyChainConfig,
|
|
Timestamp: 1492009146,
|
|
ExtraData: hexutil.MustDecode("0x52657370656374206d7920617574686f7269746168207e452e436172746d616e42eb768f2244c8811c63729a21a3569731535f067ffc57839b00206d1ad20c69a1981b489f772031b279182d99e65703f0076e4812653aab85fca0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
|
|
GasLimit: 4700000,
|
|
Difficulty: big.NewInt(1),
|
|
Alloc: decodePrealloc(rinkebyAllocData),
|
|
}
|
|
}
|
|
|
|
// DevGenesisBlock returns the 'geth --dev' genesis block.
|
|
func DevGenesisBlock() *Genesis {
|
|
return &Genesis{
|
|
Config: params.AllProtocolChanges,
|
|
Nonce: 42,
|
|
GasLimit: 4712388,
|
|
Difficulty: big.NewInt(131072),
|
|
Alloc: decodePrealloc(devAllocData),
|
|
}
|
|
}
|
|
|
|
func decodePrealloc(data string) GenesisAlloc {
|
|
var p []struct{ Addr, Balance *big.Int }
|
|
if err := rlp.NewStream(strings.NewReader(data), 0).Decode(&p); err != nil {
|
|
panic(err)
|
|
}
|
|
ga := make(GenesisAlloc, len(p))
|
|
for _, account := range p {
|
|
ga[common.BigToAddress(account.Addr)] = GenesisAccount{Balance: account.Balance}
|
|
}
|
|
return ga
|
|
}
|