nimbus-eth1/nimbus/genesis.nim

112 lines
3.5 KiB
Nim

import db/[db_chain, state_db], genesis_alloc, eth_common, tables, stint,
byteutils, times, config, rlp, ranges, block_types, eth_trie,
eth_trie/memdb, constants, nimcrypto, chronicles
type
Genesis* = object
config*: ChainConfig
nonce*: BlockNonce
timestamp*: EthTime
extraData*: seq[byte]
gasLimit*: GasInt
difficulty*: DifficultyInt
mixhash*: Hash256
coinbase*: EthAddress
alloc*: GenesisAlloc
GenesisAlloc = TableRef[EthAddress, GenesisAccount]
GenesisAccount = object
code*: seq[byte]
storage*: Table[UInt256, UInt256]
balance*: UInt256
nonce*: UInt256
func toAddress(n: UInt256): EthAddress =
let a = n.toByteArrayBE()
result[0 .. ^1] = a.toOpenArray(12, a.high)
func decodePrealloc(data: seq[byte]): GenesisAlloc =
result = newTable[EthAddress, GenesisAccount]()
for tup in rlp.decode(data.toRange, seq[(UInt256, UInt256)]):
result[toAddress(tup[0])] = GenesisAccount(balance: tup[1])
func defaultGenesisBlockForNetwork*(id: PublicNetwork): Genesis =
result = case id
of MainNet:
Genesis(
nonce: 66.toBlockNonce,
extraData: hexToSeqByte("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"),
gasLimit: 5000,
difficulty: 17179869184.u256,
alloc: decodePrealloc(mainnetAllocData)
)
of RopstenNet:
Genesis(
nonce: 66.toBlockNonce,
extraData: hexToSeqByte("0x3535353535353535353535353535353535353535353535353535353535353535"),
gasLimit: 16777216,
difficulty: 1048576.u256,
alloc: decodePrealloc(testnetAllocData)
)
of RinkebyNet:
Genesis(
nonce: 66.toBlockNonce,
extraData: hexToSeqByte("0x3535353535353535353535353535353535353535353535353535353535353535"),
gasLimit: 16777216,
difficulty: 1048576.u256,
alloc: decodePrealloc(rinkebyAllocData)
)
else:
raise newException(Exception, "No default genesis for " & $id)
result.config = publicChainConfig(id)
proc toBlock*(g: Genesis): BlockHeader =
let tdb = trieDB(newMemDB())
var trie = initHexaryTrie(tdb)
var sdb = newAccountStateDB(tdb, trie.rootHash)
for address, account in g.alloc:
sdb.setBalance(address, account.balance)
sdb.setCode(address, account.code.toRange)
sdb.setNonce(address, account.nonce)
for k, v in account.storage:
sdb.setStorage(address, k, v)
var root = sdb.rootHash
block tempRootHashStub: # TODO: Remove this block when we calculate the root hash correctly
if g.config.chainId == 1:
const correctMainnetRootHash = toDigest("d7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544")
if root != correctMainnetRootHash:
error "Root hash incorrect. Stubbing it out."
root = correctMainnetRootHash
else:
error "Yay! Root hash is correct. Please remove the block where this message comes from."
result = BlockHeader(
nonce: g.nonce,
timestamp: g.timestamp,
extraData: g.extraData,
gasLimit: g.gasLimit,
difficulty: g.difficulty,
mixDigest: g.mixhash,
coinbase: g.coinbase,
stateRoot: root,
parentHash: GENESIS_PARENT_HASH,
txRoot: BLANK_ROOT_HASH,
receiptRoot: BLANK_ROOT_HASH,
ommersHash: EMPTY_UNCLE_HASH
)
if g.gasLimit == 0:
result.gasLimit = GENESIS_GAS_LIMIT
if g.difficulty == 0:
result.difficulty = GENESIS_DIFFICULTY
proc commit*(g: Genesis, db: BaseChainDB) =
let b = g.toBlock()
assert(b.blockNumber == 0, "can't commit genesis block with number > 0")
discard db.persistHeaderToDb(b)