nimbus-eth1/nimbus/genesis.nim

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import
std/[json, strutils, times, tables],
eth/[common, rlp, trie, p2p], stew/[byteutils],
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chronicles, eth/trie/db,
./db/[db_chain, state_db],
./genesis_alloc, ./config, ./constants,
./chain_config, ./forks, ./p2p/gaslimit
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proc defaultGenesisBlockForNetwork*(id: NetworkId): Genesis =
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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: 0.toBlockNonce,
timestamp: initTime(0x58ee40ba, 0),
extraData: hexToSeqByte("0x52657370656374206d7920617574686f7269746168207e452e436172746d616e42eb768f2244c8811c63729a21a3569731535f067ffc57839b00206d1ad20c69a1981b489f772031b279182d99e65703f0076e4812653aab85fca0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
gasLimit: 4700000,
difficulty: 1.u256,
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alloc: decodePrealloc(rinkebyAllocData)
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)
of GoerliNet:
Genesis(
nonce: 0.toBlockNonce,
timestamp: initTime(0x5c51a607, 0),
extraData: hexToSeqByte("0x22466c6578692069732061207468696e6722202d204166726900000000000000e0a2bd4258d2768837baa26a28fe71dc079f84c70000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
gasLimit: 0xa00000,
difficulty: 1.u256,
alloc: decodePrealloc(goerliAllocData)
)
else:
# everything else will use custom genesis
let customGenesis = getConfiguration().customGenesis
customGenesis.genesis
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proc toBlock*(g: Genesis, db: BaseChainDB = nil): BlockHeader =
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let (tdb, pruneTrie) = if db.isNil: (newMemoryDB(), true)
else: (db.db, db.pruneTrie)
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var trie = initHexaryTrie(tdb)
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var sdb = newAccountStateDB(tdb, trie.rootHash, pruneTrie)
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for address, account in g.alloc:
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sdb.setAccount(address, newAccount(account.nonce, account.balance))
sdb.setCode(address, account.code)
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for k, v in account.storage:
sdb.setStorage(address, k, v)
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result = BlockHeader(
nonce: g.nonce,
timestamp: g.timestamp,
extraData: g.extraData,
gasLimit: g.gasLimit,
difficulty: g.difficulty,
mixDigest: g.mixhash,
coinbase: g.coinbase,
stateRoot: sdb.rootHash,
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parentHash: GENESIS_PARENT_HASH,
txRoot: BLANK_ROOT_HASH,
receiptRoot: BLANK_ROOT_HASH,
ommersHash: EMPTY_UNCLE_HASH
)
if g.baseFeePerGas.isSome:
result.baseFee = g.baseFeePerGas.get()
elif db.isNil.not and db.config.toFork(0.toBlockNumber) >= FkLondon:
result.baseFee = EIP1559_INITIAL_BASE_FEE.u256
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if g.gasLimit == 0:
result.gasLimit = GENESIS_GAS_LIMIT
if g.difficulty == 0:
result.difficulty = GENESIS_DIFFICULTY
proc commit*(g: Genesis, db: BaseChainDB) =
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let b = g.toBlock(db)
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doAssert(b.blockNumber == 0, "can't commit genesis block with number > 0")
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discard db.persistHeaderToDb(b)
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proc initializeEmptyDb*(db: BaseChainDB) =
trace "Writing genesis to DB"
let networkId = getConfiguration().net.networkId
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defaultGenesisBlockForNetwork(networkId).commit(db)