f0cbebb19f
Added chain configuration options and write out during genesis database insertion. If no "config" was found, nothing is written to the database. Configurations are written on a per genesis base. This means that any chain (which is identified by it's genesis hash) can have their own chain settings.
245 lines
8.9 KiB
Go
245 lines
8.9 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/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 *ChainConfig
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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()
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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 != 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(), 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(), 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()
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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 Morden 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(TestNetGenesisBlock()))
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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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// 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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// TestNetGenesisBlock assembles a JSON string representing the Morden test net
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// genenis block.
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func TestNetGenesisBlock() string {
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return fmt.Sprintf(`{
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"nonce": "0x%x",
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"difficulty": "0x20000",
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"mixhash": "0x00000000000000000000000000000000000000647572616c65787365646c6578",
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"coinbase": "0x0000000000000000000000000000000000000000",
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"timestamp": "0x00",
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"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
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"extraData": "0x",
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"gasLimit": "0x2FEFD8",
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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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"102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c": { "balance": "1606938044258990275541962092341162602522202993782792835301376" }
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}
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}`, types.EncodeNonce(0x6d6f7264656e))
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}
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