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