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refactor processTransaction

This commit is contained in:
andri lim 2019-02-27 13:11:31 +07:00 committed by zah
parent 5ab7c02dcf
commit b107bdd226
1 changed files with 14 additions and 49 deletions
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63
nimbus/p2p/executor.nim
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@ -6,7 +6,7 @@ import options,
../vm/[computation, interpreter_dispatch, message],
../vm/interpreter/vm_forks
proc contractCall(tx: Transaction, vmState: BaseVMState, sender: EthAddress, forkOverride=none(Fork)): GasInt =
proc contractCall*(tx: Transaction, vmState: BaseVMState, sender: EthAddress, forkOverride=none(Fork)): GasInt =
var db = vmState.accountDb
var computation = setupComputation(vmState, tx, sender, forkOverride)
if execComputation(computation):
@ -24,74 +24,39 @@ proc contractCall(tx: Transaction, vmState: BaseVMState, sender: EthAddress, for
vmState.clearLogs()
return tx.gasLimit
# this proc should not be here, we need to refactor
# processTransaction
proc isPrecompiles*(address: EthAddress): bool {.inline.} =
for i in 0..18:
if address[i] != 0: return
result = address[19] >= 1.byte and address[19] <= 8.byte
proc processTransaction*(t: Transaction, sender: EthAddress, vmState: BaseVMState): GasInt =
proc processTransaction*(tx: Transaction, sender: EthAddress, vmState: BaseVMState): GasInt =
## Process the transaction, write the results to db.
## Returns amount of ETH to be rewarded to miner
trace "Sender", sender
trace "txHash", rlpHash = t.rlpHash
trace "txHash", rlpHash = tx.rlpHash
var db = vmState.accountDb
# Inct nonce:
db.incNonce(sender)
var transactionFailed = false
#t.dump
# TODO: combine/refactor re validate
let upfrontGasCost = t.gasLimit.u256 * t.gasPrice.u256
let upfrontCost = upfrontGasCost + t.value
let upfrontGasCost = tx.gasLimit.u256 * tx.gasPrice.u256
let upfrontCost = upfrontGasCost + tx.value
var balance = db.getBalance(sender)
if balance < upfrontCost:
if balance <= upfrontGasCost:
result = (balance div t.gasPrice.u256).truncate(GasInt)
result = (balance div tx.gasPrice.u256).truncate(GasInt)
balance = 0.u256
else:
result = t.gasLimit
result = tx.gasLimit
balance -= upfrontGasCost
transactionFailed = true
else:
balance -= upfrontGasCost
db.incNonce(sender)
db.setBalance(sender, balance)
if transactionFailed:
return
if transactionFailed: return
var gasUsed = t.intrinsicGas # += 32000 appears in Homestead when contract create
if gasUsed > t.gasLimit:
debug "Transaction failed. Out of gas."
transactionFailed = true
else:
if t.isContractCreation:
# TODO: re-derive sender in callee for cleaner interface, perhaps
return applyCreateTransaction(t, vmState, sender)
else:
let code = db.getCode(t.to)
if code.len == 0 and not isPrecompiles(t.to):
# Value transfer
trace "Transfer", value = t.value, sender, to = t.to
db.subBalance(sender, t.value)
db.addBalance(t.to, t.value)
else:
# Contract call
trace "Contract call"
trace "Transaction", sender, to = t.to, value = t.value, hasCode = code.len != 0
#let msg = newMessage(t.gasLimit, t.gasPrice, t.to, sender, t.value, t.payload, code.toSeq)
# TODO: Run the vm with proper fork
return contractCall(t, vmState, sender)
if gasUsed > t.gasLimit: gasUsed = t.gasLimit
var refund = (t.gasLimit - gasUsed).u256 * t.gasPrice.u256
if transactionFailed: refund += t.value
db.addBalance(sender, refund)
return gasUsed
if tx.isContractCreation:
result = applyCreateTransaction(tx, vmState, sender)
else:
result = contractCall(tx, vmState, sender)
type
# TODO: these types need to be removed