// GenesisBlock creates a genesis block with the given nonce.
func GenesisBlock(nonce uint64, db common.Database) *types.Block {
var accounts map[string]struct {
Balance string
Code string
}
err := json.Unmarshal(GenesisAccounts, &accounts)
if err != nil {
fmt.Println("unable to decode genesis json data:", err)
os.Exit(1)
}
statedb := state.New(common.Hash{}, db)
for addr, account := range accounts {
codedAddr := common.Hex2Bytes(addr)
accountState := statedb.CreateAccount(common.BytesToAddress(codedAddr))
accountState.SetBalance(common.Big(account.Balance))
accountState.SetCode(common.FromHex(account.Code))
statedb.UpdateStateObject(accountState)
}
statedb.Sync()
block := types.NewBlock(&types.Header{
Difficulty: params.GenesisDifficulty,
GasLimit: params.GenesisGasLimit,
Nonce: types.EncodeNonce(nonce),
Root: statedb.Root(),
}, nil, nil, nil)
block.Td = params.GenesisDifficulty
return block
}
func WriteGenesisBlockForTesting(db common.Database, addr common.Address, balance *big.Int) *types.Block {
testGenesis := fmt.Sprintf(`{
"nonce":"0x%x",
"gasLimit":"0x%x",
"difficulty":"0x%x",
"alloc": {
"0x%x":{"balance":"0x%x"}
}
}`, types.EncodeNonce(0), params.GenesisGasLimit.Bytes(), params.GenesisDifficulty.Bytes(), addr, balance.Bytes())
block, _ := WriteGenesisBlock(db, db, strings.NewReader(testGenesis))
return block
}
// TestNetGenesisBlock assembles a JSON string representing the Morden test net
// genenis block.
func TestNetGenesisBlock() string {
return fmt.Sprintf(`{
"nonce": "0x%x",
"difficulty": "0x20000",
"mixhash": "0x00000000000000000000000000000000000000647572616c65787365646c6578",
"coinbase": "0x0000000000000000000000000000000000000000",
"timestamp": "0x00",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"extraData": "0x",
"gasLimit": "0x2FEFD8",
"alloc": {
"0000000000000000000000000000000000000001": { "balance": "1" },
"0000000000000000000000000000000000000002": { "balance": "1" },
"0000000000000000000000000000000000000003": { "balance": "1" },
"0000000000000000000000000000000000000004": { "balance": "1" },
"102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c": { "balance": "1606938044258990275541962092341162602522202993782792835301376" }
}
}`, types.EncodeNonce(0x6d6f7264656e))
}
func WriteGenesisBlockForTesting(db ethdb.Database, accounts ...GenesisAccount) *types.Block {
accountJson := "{"
for i, account := range accounts {
if i != 0 {
accountJson += ","
}
accountJson += fmt.Sprintf(`"0x%x":{"balance":"0x%x"}`, account.Address, account.Balance.Bytes())
}
accountJson += "}"
testGenesis := fmt.Sprintf(`{
"nonce":"0x%x",
"gasLimit":"0x%x",
"difficulty":"0x%x",
"alloc": %s
}`, types.EncodeNonce(0), params.GenesisGasLimit.Bytes(), params.GenesisDifficulty.Bytes(), accountJson)
block, _ := WriteGenesisBlock(db, strings.NewReader(testGenesis))
return block
}
func WriteTestNetGenesisBlock(chainDb ethdb.Database, nonce uint64) (*types.Block, error) {
testGenesis := fmt.Sprintf(`{
"nonce": "0x%x",
"difficulty": "0x20000",
"mixhash": "0x00000000000000000000000000000000000000647572616c65787365646c6578",
"coinbase": "0x0000000000000000000000000000000000000000",
"timestamp": "0x00",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"extraData": "0x",
"gasLimit": "0x2FEFD8",
"alloc": {
"0000000000000000000000000000000000000001": { "balance": "1" },
"0000000000000000000000000000000000000002": { "balance": "1" },
"0000000000000000000000000000000000000003": { "balance": "1" },
"0000000000000000000000000000000000000004": { "balance": "1" },
"102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c": { "balance": "1606938044258990275541962092341162602522202993782792835301376" }
}
}`, types.EncodeNonce(nonce))
return WriteGenesisBlock(chainDb, strings.NewReader(testGenesis))
}
// OlympicGenesisBlock assembles a JSON string representing the Olympic genesis
// block.
func OlympicGenesisBlock() string {
return fmt.Sprintf(`{
"nonce":"0x%x",
"gasLimit":"0x%x",
"difficulty":"0x%x",
"alloc": {
"0000000000000000000000000000000000000001": {"balance": "1"},
"0000000000000000000000000000000000000002": {"balance": "1"},
"0000000000000000000000000000000000000003": {"balance": "1"},
"0000000000000000000000000000000000000004": {"balance": "1"},
"dbdbdb2cbd23b783741e8d7fcf51e459b497e4a6": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"e4157b34ea9615cfbde6b4fda419828124b70c78": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"b9c015918bdaba24b4ff057a92a3873d6eb201be": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"6c386a4b26f73c802f34673f7248bb118f97424a": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"cd2a3d9f938e13cd947ec05abc7fe734df8dd826": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"2ef47100e0787b915105fd5e3f4ff6752079d5cb": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"e6716f9544a56c530d868e4bfbacb172315bdead": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
"1a26338f0d905e295fccb71fa9ea849ffa12aaf4": {"balance": "1606938044258990275541962092341162602522202993782792835301376"}
}
}`, types.EncodeNonce(42), params.GenesisGasLimit.Bytes(), params.GenesisDifficulty.Bytes())
}
func mustConvertHeader(in btHeader) *types.Header {
// hex decode these fields
header := &types.Header{
//SeedHash: mustConvertBytes(in.SeedHash),
MixDigest: mustConvertHash(in.MixHash),
Bloom: mustConvertBloom(in.Bloom),
ReceiptHash: mustConvertHash(in.ReceiptTrie),
TxHash: mustConvertHash(in.TransactionsTrie),
Root: mustConvertHash(in.StateRoot),
Coinbase: mustConvertAddress(in.Coinbase),
UncleHash: mustConvertHash(in.UncleHash),
ParentHash: mustConvertHash(in.ParentHash),
Extra: mustConvertBytes(in.ExtraData),
GasUsed: mustConvertBigInt(in.GasUsed, 16),
GasLimit: mustConvertBigInt(in.GasLimit, 16),
Difficulty: mustConvertBigInt(in.Difficulty, 16),
Time: mustConvertUint(in.Timestamp, 16),
Nonce: types.EncodeNonce(mustConvertUint(in.Nonce, 16)),
}
return header
}
// WriteGenesisBlock writes the genesis block to the database as block number 0
func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block, error) {
contents, err := ioutil.ReadAll(reader)
if err != nil {
return nil, err
}
var genesis struct {
ChainConfig *ChainConfig `json:"config"`
Nonce string
Timestamp string
ParentHash string
ExtraData string
GasLimit string
Difficulty string
Mixhash string
Coinbase string
Alloc map[string]struct {
Code string
Storage map[string]string
Balance string
}
}
if err := json.Unmarshal(contents, &genesis); err != nil {
return nil, err
}
// creating with empty hash always works
statedb, _ := state.New(common.Hash{}, chainDb)
for addr, account := range genesis.Alloc {
address := common.HexToAddress(addr)
statedb.AddBalance(address, common.String2Big(account.Balance))
statedb.SetCode(address, common.Hex2Bytes(account.Code))
for key, value := range account.Storage {
statedb.SetState(address, common.HexToHash(key), common.HexToHash(value))
}
}
root, stateBatch := statedb.CommitBatch()
difficulty := common.String2Big(genesis.Difficulty)
block := types.NewBlock(&types.Header{
Nonce: types.EncodeNonce(common.String2Big(genesis.Nonce).Uint64()),
Time: common.String2Big(genesis.Timestamp),
ParentHash: common.HexToHash(genesis.ParentHash),
Extra: common.FromHex(genesis.ExtraData),
GasLimit: common.String2Big(genesis.GasLimit),
Difficulty: difficulty,
MixDigest: common.HexToHash(genesis.Mixhash),
Coinbase: common.HexToAddress(genesis.Coinbase),
Root: root,
}, nil, nil, nil)
if block := GetBlock(chainDb, block.Hash()); block != nil {
glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number")
err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64())
if err != nil {
return nil, err
}
return block, nil
}
if err := stateBatch.Write(); err != nil {
return nil, fmt.Errorf("cannot write state: %v", err)
}
if err := WriteTd(chainDb, block.Hash(), difficulty); err != nil {
return nil, err
}
if err := WriteBlock(chainDb, block); err != nil {
return nil, err
}
if err := WriteBlockReceipts(chainDb, block.Hash(), nil); err != nil {
return nil, err
}
if err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()); err != nil {
return nil, err
}
if err := WriteHeadBlockHash(chainDb, block.Hash()); err != nil {
return nil, err
}
if err := WriteChainConfig(chainDb, block.Hash(), genesis.ChainConfig); err != nil {
return nil, err
}
return block, nil
}
// WriteGenesisBlock writes the genesis block to the database as block number 0
func WriteGenesisBlock(stateDb, blockDb common.Database, reader io.Reader) (*types.Block, error) {
contents, err := ioutil.ReadAll(reader)
if err != nil {
return nil, err
}
var genesis struct {
Nonce string
Timestamp string
ParentHash string
ExtraData string
GasLimit string
Difficulty string
Mixhash string
Coinbase string
Alloc map[string]struct {
Code string
Storage map[string]string
Balance string
}
}
if err := json.Unmarshal(contents, &genesis); err != nil {
return nil, err
}
statedb := state.New(common.Hash{}, stateDb)
for addr, account := range genesis.Alloc {
address := common.HexToAddress(addr)
statedb.AddBalance(address, common.String2Big(account.Balance))
statedb.SetCode(address, common.Hex2Bytes(account.Code))
for key, value := range account.Storage {
statedb.SetState(address, common.HexToHash(key), common.HexToHash(value))
}
}
statedb.SyncObjects()
difficulty := common.String2Big(genesis.Difficulty)
block := types.NewBlock(&types.Header{
Nonce: types.EncodeNonce(common.String2Big(genesis.Nonce).Uint64()),
Time: common.String2Big(genesis.Timestamp).Uint64(),
ParentHash: common.HexToHash(genesis.ParentHash),
Extra: common.FromHex(genesis.ExtraData),
GasLimit: common.String2Big(genesis.GasLimit),
Difficulty: difficulty,
MixDigest: common.HexToHash(genesis.Mixhash),
Coinbase: common.HexToAddress(genesis.Coinbase),
Root: statedb.Root(),
}, nil, nil, nil)
block.Td = difficulty
if block := GetBlockByHash(blockDb, block.Hash()); block != nil {
glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number")
err := WriteCanonNumber(blockDb, block)
if err != nil {
return nil, err
}
return block, nil
}
statedb.Sync()
err = WriteBlock(blockDb, block)
if err != nil {
return nil, err
}
err = WriteHead(blockDb, block)
if err != nil {
return nil, err
}
return block, nil
}
