115 lines
3.5 KiB
Nim
115 lines
3.5 KiB
Nim
import
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times, tables,
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eth/[common, rlp, trie], stint, stew/[byteutils, ranges], block_types, nimcrypto,
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chronicles, eth/trie/db,
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db/[db_chain, state_db], genesis_alloc, config, constants
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type
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Genesis* = object
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config*: ChainConfig
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nonce*: BlockNonce
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timestamp*: EthTime
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extraData*: seq[byte]
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gasLimit*: GasInt
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difficulty*: DifficultyInt
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mixhash*: Hash256
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coinbase*: EthAddress
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alloc*: GenesisAlloc
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GenesisAlloc = TableRef[EthAddress, GenesisAccount]
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GenesisAccount = object
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code*: seq[byte]
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storage*: Table[UInt256, UInt256]
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balance*: UInt256
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nonce*: AccountNonce
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func toAddress(n: UInt256): EthAddress =
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let a = n.toByteArrayBE()
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result[0 .. ^1] = a.toOpenArray(12, a.high)
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func decodePrealloc(data: seq[byte]): GenesisAlloc =
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result = newTable[EthAddress, GenesisAccount]()
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for tup in rlp.decode(data.toRange, seq[(UInt256, UInt256)]):
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result[toAddress(tup[0])] = GenesisAccount(balance: tup[1])
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proc defaultGenesisBlockForNetwork*(id: PublicNetwork): Genesis =
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result = case id
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of MainNet:
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Genesis(
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nonce: 66.toBlockNonce,
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extraData: hexToSeqByte("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"),
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gasLimit: 5000,
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difficulty: 17179869184.u256,
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alloc: decodePrealloc(mainnetAllocData)
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)
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of RopstenNet:
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Genesis(
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nonce: 66.toBlockNonce,
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extraData: hexToSeqByte("0x3535353535353535353535353535353535353535353535353535353535353535"),
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gasLimit: 16777216,
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difficulty: 1048576.u256,
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alloc: decodePrealloc(testnetAllocData)
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)
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of RinkebyNet:
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Genesis(
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nonce: 66.toBlockNonce,
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extraData: hexToSeqByte("0x3535353535353535353535353535353535353535353535353535353535353535"),
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gasLimit: 16777216,
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difficulty: 1048576.u256,
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alloc: decodePrealloc(rinkebyAllocData)
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)
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else:
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# TODO: Fill out the rest
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error "No default genesis for network", id
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doAssert(false, "No default genesis for " & $id)
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Genesis()
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result.config = publicChainConfig(id)
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proc toBlock*(g: Genesis, db: BaseChainDB = nil): BlockHeader =
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let (tdb, pruneTrie) = if db.isNil: (newMemoryDB(), true)
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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))
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sdb.setCode(address, account.code.toRange)
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for k, v in account.storage:
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sdb.setStorage(address, k, v)
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var root = sdb.rootHash
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result = BlockHeader(
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nonce: g.nonce,
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timestamp: g.timestamp,
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extraData: g.extraData,
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gasLimit: g.gasLimit,
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difficulty: g.difficulty,
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mixDigest: g.mixhash,
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coinbase: g.coinbase,
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stateRoot: root,
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parentHash: GENESIS_PARENT_HASH,
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txRoot: BLANK_ROOT_HASH,
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receiptRoot: BLANK_ROOT_HASH,
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ommersHash: EMPTY_UNCLE_HASH
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)
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if g.gasLimit == 0:
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result.gasLimit = GENESIS_GAS_LIMIT
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if g.difficulty == 0:
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result.difficulty = GENESIS_DIFFICULTY
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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) =
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trace "Writing genesis to DB"
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let networkId = getConfiguration().net.networkId.toPublicNetwork()
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if networkId == CustomNet:
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raise newException(Exception, "Custom genesis not implemented")
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else:
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defaultGenesisBlockForNetwork(networkId).commit(db)
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