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genesis.go
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genesis.go
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// Copyright 2018 The go-juchain Authors
// This file is part of the go-juchain library.
//
// The go-juchain 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-juchain 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-juchain library. If not, see <http://www.gnu.org/licenses/>.
package core
import (
"bytes"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"math/big"
"strings"
"github.com/juchain/go-juchain/common"
"github.com/juchain/go-juchain/common/hexutil"
"github.com/juchain/go-juchain/common/math"
"github.com/juchain/go-juchain/core/state"
"github.com/juchain/go-juchain/core/types"
"github.com/juchain/go-juchain/core/store"
"github.com/juchain/go-juchain/common/log"
"github.com/juchain/go-juchain/config"
"github.com/juchain/go-juchain/common/rlp"
"github.com/juchain/go-juchain/vm/solc"
"os"
)
//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")
var BlockReward = big.NewInt(5e+18)
// Constants containing the genesis allocation of built-in genesis blocks.
// Their content is an RLP-encoded list of (address, balance) tuples.
// Use mkalloc.go to create/update them.
// nolint: misspell
const mainnetAllocData = ""
const testnetAllocData = ""
// 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 *config.ChainConfig `json:"config"`
Nonce uint64 `json:"nonce"`
Timestamp uint64 `json:"timestamp"`
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"`
// These fields are used for consensus tests. Please don't use them
// in actual genesis blocks.
Number uint64 `json:"number"`
GasUsed uint64 `json:"gasUsed"`
ParentHash common.Hash `json:"parentHash"`
}
// GenesisAlloc specifies the initial state that is part of the genesis block.
type GenesisAlloc map[common.Address]GenesisAccount
func (ga *GenesisAlloc) UnmarshalJSON(data []byte) error {
m := make(map[common.UnprefixedAddress]GenesisAccount)
if err := json.Unmarshal(data, &m); err != nil {
return err
}
*ga = make(GenesisAlloc)
for addr, a := range m {
(*ga)[common.Address(addr)] = a
}
return nil
}
// 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"`
PrivateKey []byte `json:"secretKey,omitempty"` // for tests
}
// field type overrides for gencodec
type genesisSpecMarshaling struct {
Nonce math.HexOrDecimal64
Timestamp math.HexOrDecimal64
ExtraData hexutil.Bytes
GasLimit math.HexOrDecimal64
GasUsed math.HexOrDecimal64
Number math.HexOrDecimal64
Difficulty *math.HexOrDecimal256
Alloc map[common.UnprefixedAddress]GenesisAccount
}
type genesisAccountMarshaling struct {
Code hexutil.Bytes
Balance *math.HexOrDecimal256
Nonce math.HexOrDecimal64
Storage map[storageJSON]storageJSON
PrivateKey hexutil.Bytes
}
// storageJSON represents a 256 bit byte array, but allows less than 256 bits when
// unmarshaling from hex.
type storageJSON common.Hash
func (h *storageJSON) UnmarshalText(text []byte) error {
text = bytes.TrimPrefix(text, []byte("0x"))
if len(text) > 64 {
return fmt.Errorf("too many hex characters in storage key/value %q", text)
}
offset := len(h) - len(text)/2 // pad on the left
if _, err := hex.Decode(h[offset:], text); err != nil {
fmt.Println(err)
return fmt.Errorf("invalid hex storage key/value %q", text)
}
return nil
}
func (h storageJSON) MarshalText() ([]byte, error) {
return hexutil.Bytes(h[:]).MarshalText()
}
// 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 store.
// The block that will be used is:
//
// genesis == nil genesis != nil
// +------------------------------------------
// store has no genesis | main-net default | genesis
// store 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 *config.ConfigCompatError and the new, unwritten config is returned.
//
// The returned chain configuration is never nil.
func SetupGenesisBlock(db store.Database, genesis *Genesis) (*config.ChainConfig, common.Hash, error) {
if genesis != nil && genesis.Config == nil {
return config.MainnetChainConfig, 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 {
hash := genesis.ToBlock(nil).Hash()
if hash != stored {
return genesis.Config, 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 != config.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))
compatErr := storedcfg.CheckCompatible(newcfg, height)
if compatErr != nil && height != 0 && compatErr.RewindTo != 0 {
return newcfg, stored, compatErr
}
return newcfg, stored, WriteChainConfig(db, stored, newcfg)
}
// SetupDAppGenesisBlock writes or updates the dapp genesis block in store.
// The block that will be used is:
//
// genesis == nil genesis != nil
// +------------------------------------------
// store has no genesis | main-net default | genesis
// store 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 *config.ConfigCompatError and the new, unwritten config is returned.
//
// The returned chain configuration is never nil.
func SetupDAppGenesisBlock(dappAddress *common.Address, db store.Database, genesis *Genesis) (*config.ChainConfig, common.Hash, error) {
if genesis != nil && genesis.Config == nil {
return config.MainnetChainConfig, 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.DAppCommit(db, dappAddress)
return genesis.Config, block.Hash(), err
}
// Check whether the genesis block is already written.
if genesis != nil {
hash := genesis.ToDAppBlock(nil, dappAddress).Hash()
if hash != stored {
return genesis.Config, 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 != config.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))
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) *config.ChainConfig {
if g != nil && g.Config != nil{
return g.Config
}
return config.MainnetChainConfig
}
// ToBlock creates the genesis block and writes state of a genesis specification
// to the given database (or discards it if nil).
func (g *Genesis) ToBlock(db store.Database) *types.Block {
if db == nil {
db, _ = store.NewMemDatabase()
}
var dappAddr *common.Address;
statedb, _ := state.New(common.Hash{}, state.NewDatabase(db))
for addr, account := range g.Alloc {
if dappAddr == nil {
dappAddr = &addr; // set the first address as the creator of dapp contract.
}
// if the balance of selected dapp account is zero, will meet gas underpriced exception.
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)
}
}
if dappAddr == nil {
// if there is no any pre allocated address, set an empty address.
dappAddr = &common.Address{}
statedb.AddBalance(*dappAddr, big.NewInt(1000000000000000000))
// add 1 ether to this account.
}
head := &types.Header{
Number: new(big.Int).SetUint64(g.Number),
Nonce: types.EncodeNonce(g.Nonce),
Time: new(big.Int).SetUint64(g.Timestamp),
ParentHash: g.ParentHash,
Extra: g.ExtraData,
GasLimit: g.GasLimit,
GasUsed: g.GasUsed,
Difficulty: g.Difficulty,
MixDigest: g.Mixhash,
Coinbase: g.Coinbase,
}
if g.GasLimit == 0 {
head.GasLimit = config.GenesisGasLimit
}
if g.Difficulty == nil {
head.Difficulty = config.GenesisDifficulty
}
// install dapp contract into genesis block of main chain.
nonce := uint64(0);
amount := big.NewInt(0);
gasLimit := head.GasLimit;
gasPrice := big.NewInt(300000);
gpool := new(GasPool).AddGas(head.GasLimit);
data := common.Hex2Bytes(DAPPContractBinCode);
dapptx := types.NewContractCreation(nonce, amount, gasLimit, gasPrice, data);
//this special transaction does not need to sign.
//dapptx, err := types.SignTx(dapptx, types.MakeSigner(config.AllDPoSProtocolChanges, head.Number),nil)
tracer := vm.NewStructLogger(nil);
receipt, _, err := ApplyGenesisTransaction(dappAddr, config.MainnetChainConfig, nil, &head.Coinbase, gpool, statedb, head, dapptx, &head.GasUsed,
vm.Config{DisableGasMetering:true, Debug: false, Tracer: tracer})
vm.WriteTrace(os.Stdout, tracer.StructLogs())
if err != nil {
log.Error("Failed to initialize DApp decentralized management contract(ApplyTx)! ", "cause", err.Error())
return nil
}
// install dpos ballot contract into genesis block of main chain.
gpool1 := new(GasPool).AddGas(head.GasLimit);
data1 := common.Hex2Bytes(DPOSBallotBinCode);
dapptx1 := types.NewContractCreation(uint64(1), amount, gasLimit, gasPrice, data1);
//this special transaction does not need to sign.
//dapptx, err := types.SignTx(dapptx, types.MakeSigner(config.AllDPoSProtocolChanges, head.Number),nil)
receipt1, _, err1 := ApplyGenesisTransaction(dappAddr, config.MainnetChainConfig, nil, &head.Coinbase, gpool1, statedb, head, dapptx1, &head.GasUsed,
vm.Config{DisableGasMetering:true, Debug: false, Tracer: tracer})
if err1 != nil {
log.Error("Failed to initialize DPOS ballot contract(ApplyTx)! ", "cause", err1.Error())
return nil
}
head.GasLimit = head.GasUsed
root := statedb.IntermediateRoot(false)
head.Root = root;
// commit state into db.
statedb.Commit(false)
statedb.Database().TrieDB().Commit(root, true)
b := types.NewBlock(head, []*types.Transaction{dapptx}, nil, []*types.Receipt{receipt})
log.Info("Created Genesis Block.");
b.ToString();
log.Info("Installed DApp decentralized manager. Address: " + receipt.ContractAddress.String())
log.Info("Installed DPoS ballot manager. Address: " + receipt1.ContractAddress.String())
DAPPContractAddress = receipt.ContractAddress;
DPOSBallotContractAddress = receipt1.ContractAddress;
return b;
}
// 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 store.Database) (*types.Block, error) {
block := g.ToBlock(db)
if block == nil {
return nil, fmt.Errorf("Failed to initialize DApp decentralized management contract!")
}
if block.Number().Sign() != 0 {
return nil, fmt.Errorf("can't commit genesis block with number > 0")
}
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
}
config0 := g.Config
if config0 == nil {
config0 = config.MainnetChainConfig
}
return block, WriteChainConfig(db, block.Hash(), config0)
}
// MustCommit writes the genesis block and state to store, panicking on error.
// The block is committed as the canonical head block.
func (g *Genesis) MustCommit(db store.Database) *types.Block {
block, err := g.Commit(db)
if err != nil {
panic(err)
}
return block
}
// ToBlock creates the genesis block and writes state of a genesis specification
// to the given database (or discards it if nil).
func (g *Genesis) ToDAppBlock(db store.Database, dappAddress *common.Address) *types.Block {
if db == nil {
db, _ = store.NewMemDatabase()
}
statedb, _ := state.New(common.Hash{}, state.NewDatabase(db))
head := &types.Header{
DAppID: *dappAddress, // should we add DAppMainHash?
Number: new(big.Int).SetUint64(g.Number),
Nonce: types.EncodeNonce(g.Nonce),
Time: new(big.Int).SetUint64(g.Timestamp),
ParentHash: g.ParentHash,
Extra: g.ExtraData,
GasLimit: g.GasLimit,
GasUsed: g.GasUsed,
Difficulty: g.Difficulty,
MixDigest: g.Mixhash,
Coinbase: g.Coinbase,
}
if g.GasLimit == 0 {
head.GasLimit = config.GenesisGasLimit
}
if g.Difficulty == nil {
head.Difficulty = config.GenesisDifficulty
}
root := statedb.IntermediateRoot(false)
head.Root = root;
// commit state into db.
statedb.Commit(false)
statedb.Database().TrieDB().Commit(root, true)
b := types.NewBlock(head, nil, nil, nil)
log.Info("Created DApp Genesis Block.");
b.ToString();
return b;
}
func (g *Genesis) DAppCommit(db store.Database, dappAddress *common.Address) (*types.Block, error) {
block := g.ToDAppBlock(db, dappAddress)
if block.Number().Sign() != 0 {
return nil, fmt.Errorf("can't commit genesis block with number > 0")
}
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
}
config0 := g.Config
if config0 == nil {
config0 = config.MainnetChainConfig
}
return block, WriteChainConfig(db, block.Hash(), config0)
}
func (g *Genesis) DAppMustCommit(db store.Database, dappAddress *common.Address) *types.Block {
block, err := g.DAppCommit(db, dappAddress)
if err != nil {
panic(err)
}
return block
}
// GenesisBlockForTesting creates and writes a block in which addr has the given wei balance.
func GenesisBlockForTesting(db store.Database, addr common.Address, balance *big.Int) *types.Block {
g := Genesis{Alloc: GenesisAlloc{addr: {Balance: balance}}}
return g.MustCommit(db)
}
// DefaultGenesisBlock returns the Juchain main net genesis block.
func DefaultGenesisBlock() *Genesis {
return &Genesis{
Config: config.MainnetChainConfig,
Nonce: 66,
ExtraData: hexutil.MustDecode("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"),
GasLimit: config.GenesisGasLimit,
Difficulty: config.GenesisDifficulty,
//Alloc: decodePrealloc(mainnetAllocData),
}
}
// DefaultTestnetGenesisBlock returns the test network genesis block.
func DefaultTestnetGenesisBlock() *Genesis {
return &Genesis{
Config: config.TestnetChainConfig,
Nonce: 66,
ExtraData: hexutil.MustDecode("0x3535353535353535353535353535353535353535353535353535353535353535"),
GasLimit: 16777216,
Difficulty: big.NewInt(1048576),
//Alloc: decodePrealloc(testnetAllocData),
}
}
// DeveloperGenesisBlock returns the 'geth --dev' genesis block. Note, this must
// be seeded with the
func DeveloperGenesisBlock(period uint64, faucet common.Address) *Genesis {
// Override the default period to the user requested one
config := *config.AllCliqueProtocolChanges
config.Clique.Period = period
// Assemble and return the genesis with the precompiles and faucet pre-funded
return &Genesis{
Config: &config,
ExtraData: append(append(make([]byte, 32), faucet[:]...), make([]byte, 65)...),
GasLimit: 6283185,
Difficulty: big.NewInt(1),
Alloc: map[common.Address]GenesisAccount{
common.BytesToAddress([]byte{1}): {Balance: big.NewInt(1)}, // ECRecover
common.BytesToAddress([]byte{2}): {Balance: big.NewInt(1)}, // SHA256
common.BytesToAddress([]byte{3}): {Balance: big.NewInt(1)}, // RIPEMD
common.BytesToAddress([]byte{4}): {Balance: big.NewInt(1)}, // Identity
common.BytesToAddress([]byte{5}): {Balance: big.NewInt(1)}, // ModExp
common.BytesToAddress([]byte{6}): {Balance: big.NewInt(1)}, // ECAdd
common.BytesToAddress([]byte{7}): {Balance: big.NewInt(1)}, // ECScalarMul
common.BytesToAddress([]byte{8}): {Balance: big.NewInt(1)}, // ECPairing
faucet: {Balance: new(big.Int).Sub(new(big.Int).Lsh(big.NewInt(1), 256), big.NewInt(9))},
},
}
}
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
}