235 lines
8.5 KiB
Go
235 lines
8.5 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 core
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import (
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"compress/bzip2"
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"compress/gzip"
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"encoding/base64"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"math/big"
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"strings"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/params"
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)
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// WriteGenesisBlock writes the genesis block to the database as block number 0
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func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block, error) {
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contents, err := ioutil.ReadAll(reader)
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if err != nil {
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return nil, err
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}
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var genesis struct {
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ChainConfig *params.ChainConfig `json:"config"`
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Nonce string
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Timestamp string
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ParentHash string
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ExtraData string
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GasLimit string
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Difficulty string
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Mixhash string
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Coinbase string
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Alloc map[string]struct {
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Code string
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Storage map[string]string
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Balance string
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}
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}
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if err := json.Unmarshal(contents, &genesis); err != nil {
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return nil, err
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}
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// creating with empty hash always works
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statedb, _ := state.New(common.Hash{}, chainDb)
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for addr, account := range genesis.Alloc {
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address := common.HexToAddress(addr)
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statedb.AddBalance(address, common.String2Big(account.Balance))
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statedb.SetCode(address, common.Hex2Bytes(account.Code))
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for key, value := range account.Storage {
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statedb.SetState(address, common.HexToHash(key), common.HexToHash(value))
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}
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}
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root, stateBatch := statedb.CommitBatch(false)
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difficulty := common.String2Big(genesis.Difficulty)
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block := types.NewBlock(&types.Header{
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Nonce: types.EncodeNonce(common.String2Big(genesis.Nonce).Uint64()),
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Time: common.String2Big(genesis.Timestamp),
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ParentHash: common.HexToHash(genesis.ParentHash),
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Extra: common.FromHex(genesis.ExtraData),
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GasLimit: common.String2Big(genesis.GasLimit),
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Difficulty: difficulty,
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MixDigest: common.HexToHash(genesis.Mixhash),
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Coinbase: common.HexToAddress(genesis.Coinbase),
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Root: root,
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}, nil, nil, nil)
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if block := GetBlock(chainDb, block.Hash(), block.NumberU64()); block != nil {
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glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number")
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err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64())
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if err != nil {
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return nil, err
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}
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return block, nil
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}
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if err := stateBatch.Write(); err != nil {
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return nil, fmt.Errorf("cannot write state: %v", err)
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}
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if err := WriteTd(chainDb, block.Hash(), block.NumberU64(), difficulty); err != nil {
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return nil, err
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}
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if err := WriteBlock(chainDb, block); err != nil {
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return nil, err
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}
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if err := WriteBlockReceipts(chainDb, block.Hash(), block.NumberU64(), nil); err != nil {
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return nil, err
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}
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if err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()); err != nil {
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return nil, err
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}
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if err := WriteHeadBlockHash(chainDb, block.Hash()); err != nil {
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return nil, err
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}
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if err := WriteChainConfig(chainDb, block.Hash(), genesis.ChainConfig); err != nil {
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return nil, err
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}
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return block, nil
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}
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// GenesisBlockForTesting creates a block in which addr has the given wei balance.
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// The state trie of the block is written to db. the passed db needs to contain a state root
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func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big.Int) *types.Block {
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statedb, _ := state.New(common.Hash{}, db)
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obj := statedb.GetOrNewStateObject(addr)
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obj.SetBalance(balance)
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root, err := statedb.Commit(false)
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if err != nil {
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panic(fmt.Sprintf("cannot write state: %v", err))
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}
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block := types.NewBlock(&types.Header{
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Difficulty: params.GenesisDifficulty,
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GasLimit: params.GenesisGasLimit,
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Root: root,
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}, nil, nil, nil)
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return block
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}
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type GenesisAccount struct {
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Address common.Address
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Balance *big.Int
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}
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func WriteGenesisBlockForTesting(db ethdb.Database, accounts ...GenesisAccount) *types.Block {
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accountJson := "{"
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for i, account := range accounts {
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if i != 0 {
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accountJson += ","
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}
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accountJson += fmt.Sprintf(`"0x%x":{"balance":"0x%x"}`, account.Address, account.Balance.Bytes())
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}
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accountJson += "}"
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testGenesis := fmt.Sprintf(`{
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"nonce":"0x%x",
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"gasLimit":"0x%x",
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"difficulty":"0x%x",
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"alloc": %s
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}`, types.EncodeNonce(0), params.GenesisGasLimit.Bytes(), params.GenesisDifficulty.Bytes(), accountJson)
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block, _ := WriteGenesisBlock(db, strings.NewReader(testGenesis))
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return block
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}
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// WriteDefaultGenesisBlock assembles the official Ethereum genesis block and
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// writes it - along with all associated state - into a chain database.
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func WriteDefaultGenesisBlock(chainDb ethdb.Database) (*types.Block, error) {
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return WriteGenesisBlock(chainDb, strings.NewReader(DefaultGenesisBlock()))
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}
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// WriteTestNetGenesisBlock assembles the test network genesis block and
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// writes it - along with all associated state - into a chain database.
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func WriteTestNetGenesisBlock(chainDb ethdb.Database) (*types.Block, error) {
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return WriteGenesisBlock(chainDb, strings.NewReader(DefaultTestnetGenesisBlock()))
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}
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// WriteOlympicGenesisBlock assembles the Olympic genesis block and writes it
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// along with all associated state into a chain database.
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func WriteOlympicGenesisBlock(db ethdb.Database) (*types.Block, error) {
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return WriteGenesisBlock(db, strings.NewReader(OlympicGenesisBlock()))
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}
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// DefaultGenesisBlock assembles a JSON string representing the default Ethereum
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// genesis block.
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func DefaultGenesisBlock() string {
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reader, err := gzip.NewReader(base64.NewDecoder(base64.StdEncoding, strings.NewReader(defaultGenesisBlock)))
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if err != nil {
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panic(fmt.Sprintf("failed to access default genesis: %v", err))
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}
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blob, err := ioutil.ReadAll(reader)
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if err != nil {
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panic(fmt.Sprintf("failed to load default genesis: %v", err))
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}
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return string(blob)
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}
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// DefaultTestnetGenesisBlock assembles a JSON string representing the default Ethereum
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// test network genesis block.
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func DefaultTestnetGenesisBlock() string {
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reader := bzip2.NewReader(base64.NewDecoder(base64.StdEncoding, strings.NewReader(defaultTestnetGenesisBlock)))
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blob, err := ioutil.ReadAll(reader)
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if err != nil {
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panic(fmt.Sprintf("failed to load default genesis: %v", err))
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}
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return string(blob)
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}
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// OlympicGenesisBlock assembles a JSON string representing the Olympic genesis
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// block.
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func OlympicGenesisBlock() string {
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return fmt.Sprintf(`{
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"nonce":"0x%x",
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"gasLimit":"0x%x",
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"difficulty":"0x%x",
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"alloc": {
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"0000000000000000000000000000000000000001": {"balance": "1"},
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"0000000000000000000000000000000000000002": {"balance": "1"},
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"0000000000000000000000000000000000000003": {"balance": "1"},
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"0000000000000000000000000000000000000004": {"balance": "1"},
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"dbdbdb2cbd23b783741e8d7fcf51e459b497e4a6": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"e4157b34ea9615cfbde6b4fda419828124b70c78": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"b9c015918bdaba24b4ff057a92a3873d6eb201be": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"6c386a4b26f73c802f34673f7248bb118f97424a": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"cd2a3d9f938e13cd947ec05abc7fe734df8dd826": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"2ef47100e0787b915105fd5e3f4ff6752079d5cb": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"e6716f9544a56c530d868e4bfbacb172315bdead": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
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"1a26338f0d905e295fccb71fa9ea849ffa12aaf4": {"balance": "1606938044258990275541962092341162602522202993782792835301376"}
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}
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}`, types.EncodeNonce(42), params.GenesisGasLimit.Bytes(), params.GenesisDifficulty.Bytes())
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}
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