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genesis.go
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genesis.go
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// Copyright 2018 The cpchain authors
// Copyright 2014 The go-ethereum Authors
package core
import (
"bytes"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"math/big"
"bitbucket.org/cpchain/chain/commons/log"
"bitbucket.org/cpchain/chain/configs"
"bitbucket.org/cpchain/chain/core/rawdb"
"bitbucket.org/cpchain/chain/core/state"
"bitbucket.org/cpchain/chain/database"
"bitbucket.org/cpchain/chain/types"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
)
//go:generate gencodec -type Genesis -formats json,toml -field-override genesisSpecMarshaling -out gen_genesis.go
//go:generate gencodec -type GenesisAccount -formats json,toml -field-override genesisAccountMarshaling -out gen_genesis_account.go
var (
errGenesisNoConfig = errors.New("genesis has no chain configuration")
errGenesisNoExist = errors.New("genesis block does not exist")
errGenesisCfgNoExist = errors.New("genesis block configuration does not exist")
)
// 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 *configs.ChainConfig `json:"config" toml:"config"`
Timestamp uint64 `json:"timestamp" toml:"timestamp"`
ExtraData []byte `json:"extraData" toml:"extraData"`
GasLimit uint64 `json:"gasLimit" toml:"gasLimit" gencodec:"required"`
Difficulty *big.Int `json:"difficulty" toml:"difficulty" gencodec:"required"`
Coinbase common.Address `json:"coinbase" toml:"coinbase"`
Alloc GenesisAlloc `json:"alloc" toml:"alloc" gencodec:"required"`
// These fields are used for consensus tests. Please don't use them
// in actual genesis blocks.
Number uint64 `json:"number" toml:"number"`
GasUsed uint64 `json:"gasUsed" toml:"gasUsed"`
ParentHash common.Hash `json:"parentHash" toml:"parentHash"`
Dpor types.DporSnap `json:"dpor" toml:"dpor"`
}
// 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" toml:"code,omitempty"`
Storage map[common.Hash]common.Hash `json:"storage,omitempty" toml:"storage,omitempty"`
Balance *big.Int `json:"balance" toml:"balance" gencodec:"required"`
Nonce uint64 `json:"nonce,omitempty" toml:"nonce,omitempty"`
PrivateKey []byte `json:"secretKey,omitempty" toml:"secretKey,omitempty"` // for tests
}
// field type overrides for gencodec
type genesisSpecMarshaling struct {
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[marshalHash]marshalHash
PrivateKey hexutil.Bytes
}
// marshalHash represents a 256 bit byte array, but allows less than 256 bits when
// unmarshaling from hex.
type marshalHash common.Hash
func (h *marshalHash) 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 marshalHash) 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 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 (must match)
//
// 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 database.Database, genesis *Genesis) (*configs.ChainConfig, common.Hash, error) {
if genesis != nil && genesis.Config == nil {
return configs.ChainConfigInfo(), common.Hash{}, errGenesisNoConfig
}
stored := rawdb.ReadCanonicalHash(db, 0)
if (stored == common.Hash{}) {
// Just commit the new block if there is no stored genesis block.
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
} else {
// Get the existing chain configuration.
storedCfg := rawdb.ReadChainConfig(db, stored)
newCfg := genesis.configOrDefault(stored)
var finalCfg *configs.ChainConfig
if genesis != nil {
// Check whether the genesis block is already written.
hash := genesis.ToBlock(nil).Hash()
if hash != stored {
return genesis.Config, hash, &GenesisMismatchError{stored, hash}
}
finalCfg = updateChainConfig(storedCfg, newCfg, db, stored)
} else {
// 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 stored != MainnetGenesisHash {
return storedCfg, stored, nil
} else {
finalCfg = updateChainConfig(storedCfg, newCfg, db, stored)
}
}
return finalCfg, stored, nil
}
}
func updateChainConfig(storedcfg *configs.ChainConfig, newcfg *configs.ChainConfig, db database.Database, stored common.Hash) *configs.ChainConfig {
if storedcfg == nil {
log.Warn("Found genesis block without chain config")
}
// NOTICE: in future we may need to check the compatibility of old and new configurations.
rawdb.WriteChainConfig(db, stored, newcfg)
return newcfg
}
// OpenGenesisBlock opens genesis block and returns its chain configuration and hash.
// Return errors when genesis block not exist or genesis block configuration not exist.
func OpenGenesisBlock(db database.Database) (*configs.ChainConfig, common.Hash, error) {
// the hash of the stored block
stored := rawdb.ReadCanonicalHash(db, 0)
if (stored == common.Hash{}) {
return nil, common.Hash{}, errGenesisNoExist
}
storedcfg := rawdb.ReadChainConfig(db, stored)
if storedcfg != nil {
return storedcfg, stored, nil
} else {
return nil, stored, errGenesisCfgNoExist
}
}
func (g *Genesis) configOrDefault(ghash common.Hash) *configs.ChainConfig {
switch {
case g != nil:
return g.Config
default:
return configs.ChainConfigInfo()
}
}
// 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 database.Database) *types.Block {
if db == nil {
db = database.NewMemDatabase()
}
statedb, _ := state.New(common.Hash{}, state.NewDatabase(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{
Number: new(big.Int).SetUint64(g.Number),
Time: new(big.Int).SetUint64(g.Timestamp),
ParentHash: g.ParentHash,
Extra: g.ExtraData,
GasLimit: g.GasLimit,
GasUsed: g.GasUsed,
Coinbase: g.Coinbase,
StateRoot: root,
Dpor: g.Dpor,
}
if g.GasLimit == 0 {
head.GasLimit = configs.DefaultGasLimitPerBlock
}
if _, err := statedb.Commit(false); err != nil {
log.Error("Error in genesis", "error", err)
}
if err := statedb.Database().TrieDB().Commit(root, true); err != nil {
log.Error("Error in genesis", "error", err)
}
return types.NewBlock(head, nil, nil)
}
// 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 database.Database) (*types.Block, error) {
block := g.ToBlock(db)
if block.Number().Sign() != 0 {
return nil, fmt.Errorf("can't commit genesis block with number > 0")
}
rawdb.WriteBlock(db, block)
rawdb.WriteReceipts(db, block.Hash(), block.NumberU64(), nil)
rawdb.WriteCanonicalHash(db, block.Hash(), block.NumberU64())
rawdb.WriteHeadBlockHash(db, block.Hash())
rawdb.WriteHeadHeaderHash(db, block.Hash())
config := g.Config
if config == nil {
config = configs.ChainConfigInfo()
}
rawdb.WriteChainConfig(db, block.Hash(), config)
return block, nil
}
// 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 database.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 database.Database, addr common.Address, balance *big.Int) *types.Block {
g := DefaultGenesisBlock()
g.Alloc = GenesisAlloc{addr: {Balance: balance}}
return g.MustCommit(db)
}
// Genesis hashes to enforce below configs on.
var MainnetGenesisHash = common.HexToHash("0x8545e2d351787b516562932c72155abc441c769939693a8255fc42a432061d6b")
// DefaultGenesisBlock returns the cpchain main net genesis block.
func DefaultGenesisBlock() *Genesis {
switch {
case configs.IsDev():
return newGenesisBlock()
case configs.IsTestnet():
return newTestnetGenesisBlock()
case configs.IsMainnet():
return newMainnetGenesisBlock()
case configs.IsTestMainnet():
return newTestMainnetGenesisBlock()
case configs.IsTestcase():
return newGenesisBlock()
default:
return newGenesisBlock()
}
}
func newGenesisBlock() *Genesis {
candidates := configs.Candidates()
return &Genesis{
Config: configs.ChainConfigInfo(),
Timestamp: 1492009146000,
ExtraData: hexutil.MustDecode("0x0000000000000000000000000000000000000000000000000000000000000000"),
GasLimit: configs.DefaultGasLimitPerBlock,
Difficulty: big.NewInt(1),
Alloc: map[common.Address]GenesisAccount{
candidates[0]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[1]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[2]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[3]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[4]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[5]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
common.HexToAddress("0x0000000000000000000000000000000000000000"): {Balance: big.NewInt(0x00000000000000000)},
common.HexToAddress("0x0000000000000000000000000000000000000001"): {Balance: big.NewInt(0x00000000000000000)},
common.HexToAddress("0x0000000000000000000000000000000000000002"): {Balance: big.NewInt(0x00000000000000000)},
common.HexToAddress("0x00000000000000000000000000000000000000ff"): {Balance: big.NewInt(0x00000000000000000)},
common.HexToAddress("0xb3801b8743dea10c30b0c21cae8b1923d9625f84"): {Balance: new(big.Int).Mul(big.NewInt(800000000), big.NewInt(configs.Cpc))}, // contract admin account
},
Dpor: types.DporSnap{
Proposers: configs.Proposers(),
Seal: types.DporSignature{},
Sigs: make([]types.DporSignature, configs.DefaultValidatorsNumber),
Validators: configs.Validators(),
},
}
}
func newTestnetGenesisBlock() *Genesis {
candidates := configs.Candidates()
return &Genesis{
Config: configs.ChainConfigInfo(),
Timestamp: 1492009146000,
ExtraData: hexutil.MustDecode("0x0000000000000000000000000000000000000000000000000000000000000000"),
GasLimit: configs.DefaultGasLimitPerBlock,
Difficulty: big.NewInt(1),
Alloc: map[common.Address]GenesisAccount{
candidates[0]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[1]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[2]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[3]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[4]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[5]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
// faucet node
common.HexToAddress("0xe83a71428655b9f52ff6dc556e2b37043f39f194"): {Balance: new(big.Int).Sub(new(big.Int).Lsh(big.NewInt(1), 256), big.NewInt(9))},
},
Dpor: types.DporSnap{
Proposers: configs.Proposers(),
Seal: types.DporSignature{},
Sigs: make([]types.DporSignature, configs.TestnetValidatorsNumber),
Validators: configs.Validators(),
},
}
}
func newMainnetGenesisBlock() *Genesis {
log.Info("newMainnetGenesisBlock runmode:", "vv", configs.GetRunMode())
candidates := configs.Candidates()
return &Genesis{
Config: configs.ChainConfigInfo(),
Timestamp: 1553754594000,
ExtraData: hexutil.MustDecode("0x0000000000000000000000000000000000000000000000000000000000000000"),
GasLimit: configs.DefaultGasLimitPerBlock,
Difficulty: big.NewInt(1),
Alloc: map[common.Address]GenesisAccount{
candidates[0]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[1]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[2]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[3]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[4]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[5]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[6]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[7]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[8]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[9]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[10]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[11]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
// contract admin account 21
common.HexToAddress("0xda5ccb96e93a6a5a80ab1f0a2c5b74ab6a198b45"): {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
// bank 22
common.HexToAddress("0x0020511a8d7fd0dc831610a8c2d41c99e2cc9a51"): {Balance: new(big.Int).Mul(big.NewInt(873880028800), big.NewInt(configs.Finney))},
},
Dpor: types.DporSnap{
Proposers: configs.Proposers(),
Seal: types.DporSignature{},
Sigs: make([]types.DporSignature, configs.MainnetValidatorsNumber),
Validators: configs.Validators(),
},
}
}
func newTestMainnetGenesisBlock() *Genesis {
log.Info("newTestMainnetGenesisBlock runmode:", "vv", configs.GetRunMode())
candidates := configs.Candidates()
return &Genesis{
Config: configs.ChainConfigInfo(),
Timestamp: 1553754594000,
ExtraData: hexutil.MustDecode("0x0000000000000000000000000000000000000000000000000000000000000000"),
GasLimit: configs.DefaultGasLimitPerBlock,
Difficulty: big.NewInt(1),
Alloc: map[common.Address]GenesisAccount{
candidates[0]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[1]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[2]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[3]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[4]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[5]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[6]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[7]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[8]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[9]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[10]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
candidates[11]: {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
// contract admin account 21
common.HexToAddress("0xb3801b8743dea10c30b0c21cae8b1923d9625f84"): {Balance: new(big.Int).Mul(big.NewInt(300000), big.NewInt(configs.Cpc))},
// bank 22
common.HexToAddress("0xabb528bffc707c2c507307e426ce810a7ad93ed6"): {Balance: new(big.Int).Mul(big.NewInt(1000000000), big.NewInt(configs.Cpc))},
},
Dpor: types.DporSnap{
Proposers: configs.Proposers(),
Seal: types.DporSignature{},
Sigs: make([]types.DporSignature, configs.TestMainnetValidatorsNumber),
Validators: configs.Validators(),
},
}
}