nimbus-eth1/nimbus/p2p/executor.nim

246 lines
8.6 KiB
Nim

import options, sets,
eth/[common, bloom, trie/db], chronicles, nimcrypto,
../db/[db_chain, accounts_cache],
../utils, ../constants, ../transaction,
../vm_state, ../vm_types,
./dao, ./validate, ../config, ../forks,
../transaction/call_evm
proc processTransaction*(tx: Transaction, sender: EthAddress, vmState: BaseVMState, fork: Fork): GasInt =
## Process the transaction, write the results to db.
## Returns amount of ETH to be rewarded to miner
trace "Sender", sender
trace "txHash", rlpHash = tx.rlpHash
if validateTransaction(vmState, tx, sender, fork):
result = txCallEvm(tx, sender, vmState, fork)
vmState.cumulativeGasUsed += result
let miner = vmState.coinbase()
vmState.mutateStateDB:
# miner fee
let txFee = result.u256 * tx.gasPrice.u256
db.addBalance(miner, txFee)
for deletedAccount in vmState.selfDestructs:
db.deleteAccount deletedAccount
if fork >= FkSpurious:
vmState.touchedAccounts.incl(miner)
# EIP158/161 state clearing
for account in vmState.touchedAccounts:
if db.accountExists(account) and db.isEmptyAccount(account):
debug "state clearing", account
db.deleteAccount(account)
if vmState.generateWitness:
vmState.accountDb.collectWitnessData()
vmState.accountDb.persist(clearCache = false)
type
# TODO: these types need to be removed
# once eth/bloom and eth/common sync'ed
Bloom = common.BloomFilter
LogsBloom = bloom.BloomFilter
# TODO: move these three receipt procs below somewhere else more appropriate
func logsBloom(logs: openArray[Log]): LogsBloom =
for log in logs:
result.incl log.address
for topic in log.topics:
result.incl topic
func createBloom*(receipts: openArray[Receipt]): Bloom =
var bloom: LogsBloom
for rec in receipts:
bloom.value = bloom.value or logsBloom(rec.logs).value
result = bloom.value.toByteArrayBE
proc makeReceipt*(vmState: BaseVMState, fork: Fork, txType: TxType): Receipt =
var rec: Receipt
if fork < FkByzantium:
rec.isHash = true
rec.hash = vmState.accountDb.rootHash
else:
rec.isHash = false
rec.status = vmState.status
rec.receiptType = txType
rec.cumulativeGasUsed = vmState.cumulativeGasUsed
rec.logs = vmState.getAndClearLogEntries()
rec.bloom = logsBloom(rec.logs).value.toByteArrayBE
rec
func eth(n: int): Uint256 {.compileTime.} =
n.u256 * pow(10.u256, 18)
const
eth5 = 5.eth
eth3 = 3.eth
eth2 = 2.eth
blockRewards*: array[Fork, Uint256] = [
eth5, # FkFrontier
eth5, # FkHomestead
eth5, # FkTangerine
eth5, # FkSpurious
eth3, # FkByzantium
eth2, # FkConstantinople
eth2, # FkPetersburg
eth2, # FkIstanbul
eth2, # FkBerlin
eth2 # FkLondon
]
proc calculateReward(fork: Fork, header: BlockHeader, body: BlockBody, vmState: BaseVMState) =
# PoA consensus engine have no reward for miner
if vmState.consensusEnginePoA: return
let blockReward = blockRewards[fork]
var mainReward = blockReward
for uncle in body.uncles:
var uncleReward = uncle.blockNumber.u256 + 8.u256
uncleReward -= header.blockNumber.u256
uncleReward = uncleReward * blockReward
uncleReward = uncleReward div 8.u256
vmState.mutateStateDB:
db.addBalance(uncle.coinbase, uncleReward)
mainReward += blockReward div 32.u256
vmState.mutateStateDB:
db.addBalance(header.coinbase, mainReward)
proc processBlock*(chainDB: BaseChainDB, header: BlockHeader, body: BlockBody, vmState: BaseVMState): ValidationResult =
var dbTx = chainDB.db.beginTransaction()
defer: dbTx.dispose()
if chainDB.config.daoForkSupport and header.blockNumber == chainDB.config.daoForkBlock:
vmState.mutateStateDB:
db.applyDAOHardFork()
if body.transactions.calcTxRoot != header.txRoot:
debug "Mismatched txRoot", blockNumber=header.blockNumber
return ValidationResult.Error
let fork = chainDB.config.toFork(vmState.blockNumber)
if header.txRoot != BLANK_ROOT_HASH:
if body.transactions.len == 0:
debug "No transactions in body", blockNumber=header.blockNumber
return ValidationResult.Error
else:
trace "Has transactions", blockNumber = header.blockNumber, blockHash = header.blockHash
vmState.receipts = newSeq[Receipt](body.transactions.len)
vmState.cumulativeGasUsed = 0
for txIndex, tx in body.transactions:
var sender: EthAddress
if tx.getSender(sender):
discard processTransaction(tx, sender, vmState, fork)
else:
debug "Could not get sender", txIndex, tx
return ValidationResult.Error
vmState.receipts[txIndex] = makeReceipt(vmState, fork, tx.txType)
if header.ommersHash != EMPTY_UNCLE_HASH:
let h = chainDB.persistUncles(body.uncles)
if h != header.ommersHash:
debug "Uncle hash mismatch"
return ValidationResult.Error
calculateReward(fork, header, body, vmState)
# Reward beneficiary
vmState.mutateStateDB:
if vmState.generateWitness:
db.collectWitnessData()
db.persist(ClearCache in vmState.flags)
let stateDb = vmState.accountDb
if header.stateRoot != stateDb.rootHash:
debug "wrong state root in block", blockNumber=header.blockNumber, expected=header.stateRoot, actual=stateDb.rootHash, arrivedFrom=chainDB.getCanonicalHead().stateRoot
return ValidationResult.Error
let bloom = createBloom(vmState.receipts)
if header.bloom != bloom:
debug "wrong bloom in block", blockNumber=header.blockNumber
return ValidationResult.Error
let receiptRoot = calcReceiptRoot(vmState.receipts)
if header.receiptRoot != receiptRoot:
debug "wrong receiptRoot in block", blockNumber=header.blockNumber, actual=receiptRoot, expected=header.receiptRoot
return ValidationResult.Error
# `applyDeletes = false`
# If the trie pruning activated, each of the block will have its own state trie keep intact,
# rather than destroyed by trie pruning. But the current block will still get a pruned trie.
# If trie pruning deactivated, `applyDeletes` have no effects.
dbTx.commit(applyDeletes = false)
#[
method executeTransaction(vmState: BaseVMState, transaction: Transaction): (Computation, BlockHeader) {.base.}=
# Execute the transaction in the vm
# TODO: introduced here: https://github.com/ethereum/py-evm/commit/21c57f2d56ab91bb62723c3f9ebe291d0b132dde
# Refactored/Removed here: https://github.com/ethereum/py-evm/commit/cc991bf
# Deleted here: https://github.com/ethereum/py-evm/commit/746defb6f8e83cee2c352a0ab8690e1281c4227c
raise newException(ValueError, "Must be implemented by subclasses")
method addTransaction*(vmState: BaseVMState, transaction: Transaction, c: Computation, b: Block): (Block, Table[string, string]) =
# Add a transaction to the given block and
# return `trieData` to store the transaction data in chaindb in VM layer
# Update the bloomFilter, transaction trie and receipt trie roots, bloom_filter,
# bloom, and usedGas of the block
# transaction: the executed transaction
# computation: the Computation object with executed result
# block: the Block which the transaction is added in
# var receipt = vmState.makeReceipt(transaction, computation)
# vmState.add_receipt(receipt)
# block.transactions.append(transaction)
# # Get trie roots and changed key-values.
# tx_root_hash, tx_kv_nodes = make_trie_root_and_nodes(block.transactions)
# receipt_root_hash, receipt_kv_nodes = make_trie_root_and_nodes(self.receipts)
# trie_data = merge(tx_kv_nodes, receipt_kv_nodes)
# block.bloom_filter |= receipt.bloom
# block.header.transaction_root = tx_root_hash
# block.header.receipt_root = receipt_root_hash
# block.header.bloom = int(block.bloom_filter)
# block.header.gas_used = receipt.gas_used
# return block, trie_data
result = (b, initTable[string, string]())
method applyTransaction*(
vmState: BaseVMState,
transaction: Transaction,
b: Block,
isStateless: bool): (Computation, Block, Table[string, string]) =
# Apply transaction to the given block
# transaction: the transaction need to be applied
# b: the block which the transaction applies on
# isStateless: if isStateless, call vmState.addTransaction to set block
if isStateless:
var ourBlock = b # deepcopy
vmState.blockHeader = b.header
var (computation, blockHeader) = vmState.executeTransaction(transaction)
ourBlock.header = blockHeader
var trieData: Table[string, string]
(ourBlock, trieData) = vmState.addTransaction(transaction, computation, ourBlock)
result = (computation, ourBlock, trieData)
else:
var (computation, blockHeader) = vmState.executeTransaction(transaction)
return (computation, nil, initTable[string, string]())
]#