nimbus-eth1/nimbus/rpc/rpc_utils.nim

304 lines
10 KiB
Nim

# Nimbus
# Copyright (c) 2018-2023 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
# * MIT license ([LICENSE-MIT](LICENSE-MIT))
# at your option.
# This file may not be copied, modified, or distributed except according to
# those terms.
{.push raises: [].}
import
std/[strutils, algorithm, options],
./rpc_types,
eth/[common, keys],
../db/core_db,
../constants, stint,
../utils/utils,
../transaction,
../transaction/call_evm,
../core/eip4844,
../beacon/web3_eth_conv
const
defaultTag = blockId("latest")
type
BlockHeader = common.BlockHeader
proc headerFromTag*(chain: CoreDbRef, blockId: BlockTag): BlockHeader
{.gcsafe, raises: [CatchableError].} =
if blockId.kind == bidAlias:
let tag = blockId.alias.toLowerAscii
case tag
of "latest": result = chain.getCanonicalHead()
of "earliest": result = chain.getBlockHeader(GENESIS_BLOCK_NUMBER)
of "safe": result = chain.safeHeader()
of "finalized": result = chain.finalizedHeader()
of "pending":
#TODO: Implement get pending block
raise newException(ValueError, "Pending tag not yet implemented")
else:
raise newException(ValueError, "Unsupported block tag " & tag)
else:
let blockNum = blockId.number.toBlockNumber
result = chain.getBlockHeader(blockNum)
proc headerFromTag*(chain: CoreDbRef, blockTag: Option[BlockTag]): BlockHeader
{.gcsafe, raises: [CatchableError].} =
let blockId = blockTag.get(defaultTag)
chain.headerFromTag(blockId)
proc calculateMedianGasPrice*(chain: CoreDbRef): GasInt
{.gcsafe, raises: [CatchableError].} =
var prices = newSeqOfCap[GasInt](64)
let header = chain.getCanonicalHead()
for encodedTx in chain.getBlockTransactionData(header.txRoot):
let tx = decodeTx(encodedTx)
prices.add(tx.gasPrice)
if prices.len > 0:
sort(prices)
let middle = prices.len div 2
if prices.len mod 2 == 0:
# prevent overflow
let price = prices[middle].uint64 + prices[middle - 1].uint64
result = (price div 2).GasInt
else:
result = prices[middle]
proc unsignedTx*(tx: EthSend, chain: CoreDbRef, defaultNonce: AccountNonce): Transaction
{.gcsafe, raises: [CatchableError].} =
if tx.to.isSome:
result.to = some(ethAddr(tx.to.get))
if tx.gas.isSome:
result.gasLimit = tx.gas.get.GasInt
else:
result.gasLimit = 90000.GasInt
if tx.gasPrice.isSome:
result.gasPrice = tx.gasPrice.get.GasInt
else:
result.gasPrice = calculateMedianGasPrice(chain)
if tx.value.isSome:
result.value = tx.value.get
else:
result.value = 0.u256
if tx.nonce.isSome:
result.nonce = tx.nonce.get.AccountNonce
else:
result.nonce = defaultNonce
result.payload = tx.data
template optionalAddress(src, dst: untyped) =
if src.isSome:
dst = some(ethAddr src.get)
template optionalGas(src, dst: untyped) =
if src.isSome:
dst = some(src.get.GasInt)
template optionalU256(src, dst: untyped) =
if src.isSome:
dst = some(src.get)
template optionalBytes(src, dst: untyped) =
if src.isSome:
dst = src.get
proc callData*(call: EthCall): RpcCallData {.gcsafe, raises: [].} =
optionalAddress(call.source, result.source)
optionalAddress(call.to, result.to)
optionalGas(call.gas, result.gasLimit)
optionalGas(call.gasPrice, result.gasPrice)
optionalGas(call.maxFeePerGas, result.maxFee)
optionalGas(call.maxPriorityFeePerGas, result.maxPriorityFee)
optionalU256(call.value, result.value)
optionalBytes(call.data, result.data)
proc toWd(wd: Withdrawal): WithdrawalObject =
WithdrawalObject(
index: w3Qty wd.index,
validatorIndex: w3Qty wd.validatorIndex,
address: w3Addr wd.address,
amount: w3Qty wd.amount,
)
proc toWdList(list: openArray[Withdrawal]): seq[WithdrawalObject] =
result = newSeqOfCap[WithdrawalObject](list.len)
for x in list:
result.add toWd(x)
proc toHashList(list: openArray[StorageKey]): seq[Web3Hash] =
result = newSeqOfCap[Web3Hash](list.len)
for x in list:
result.add Web3Hash x
proc toAccessTuple(ac: AccessPair): AccessTuple =
AccessTuple(
address: w3Addr ac.address,
storageKeys: toHashList(ac.storageKeys)
)
proc toAccessTupleList(list: openArray[AccessPair]): seq[AccessTuple] =
result = newSeqOfCap[AccessTuple](list.len)
for x in list:
result.add toAccessTuple(x)
proc populateTransactionObject*(tx: Transaction,
optionalHeader: Option[BlockHeader] = none(BlockHeader),
txIndex: Option[int] = none(int)): TransactionObject
{.gcsafe, raises: [ValidationError].} =
result = TransactionObject()
result.`type` = some w3Qty(tx.txType.ord)
if optionalHeader.isSome:
let header = optionalHeader.get
result.blockHash = some(w3Hash header.hash)
result.blockNumber = some(w3Qty(header.blockNumber.truncate(uint64)))
result.`from` = w3Addr tx.getSender()
result.gas = w3Qty(tx.gasLimit)
result.gasPrice = w3Qty(tx.gasPrice)
result.hash = w3Hash tx.rlpHash
result.input = tx.payload
result.nonce = w3Qty(tx.nonce)
result.to = some(w3Addr tx.destination)
if txIndex.isSome:
result.transactionIndex = some(w3Qty(txIndex.get))
result.value = tx.value
result.v = w3Qty(tx.V)
result.r = u256(tx.R)
result.s = u256(tx.S)
result.maxFeePerGas = some w3Qty(tx.maxFee)
result.maxPriorityFeePerGas = some w3Qty(tx.maxPriorityFee)
if tx.txType >= TxEip2930:
result.chainId = some(Web3Quantity(tx.chainId))
result.accessList = some(toAccessTupleList(tx.accessList))
if tx.txType >= TxEIP4844:
result.maxFeePerBlobGas = some(tx.maxFeePerBlobGas)
result.blobVersionedHashes = some(w3Hashes tx.versionedHashes)
proc populateBlockObject*(header: BlockHeader, chain: CoreDbRef, fullTx: bool, isUncle = false): BlockObject
{.gcsafe, raises: [CatchableError].} =
let blockHash = header.blockHash
result = BlockObject()
result.number = w3Qty(header.blockNumber)
result.hash = w3Hash blockHash
result.parentHash = w3Hash header.parentHash
result.nonce = some(FixedBytes[8] header.nonce)
result.sha3Uncles = w3Hash header.ommersHash
result.logsBloom = FixedBytes[256] header.bloom
result.transactionsRoot = w3Hash header.txRoot
result.stateRoot = w3Hash header.stateRoot
result.receiptsRoot = w3Hash header.receiptRoot
result.miner = w3Addr header.coinbase
result.difficulty = header.difficulty
result.extraData = HistoricExtraData header.extraData
result.mixHash = w3Hash header.mixDigest
# discard sizeof(seq[byte]) of extraData and use actual length
let size = sizeof(BlockHeader) - sizeof(Blob) + header.extraData.len
result.size = w3Qty(size)
result.gasLimit = w3Qty(header.gasLimit)
result.gasUsed = w3Qty(header.gasUsed)
result.timestamp = w3Qty(header.timestamp)
result.baseFeePerGas = if header.fee.isSome:
some(header.baseFee)
else:
none(UInt256)
if not isUncle:
result.totalDifficulty = chain.getScore(blockHash)
result.uncles = w3Hashes chain.getUncleHashes(header)
if fullTx:
var i = 0
for tx in chain.getBlockTransactions(header):
result.transactions.add txOrHash(populateTransactionObject(tx, some(header), some(i)))
inc i
else:
for x in chain.getBlockTransactionHashes(header):
result.transactions.add txOrHash(w3Hash(x))
if header.withdrawalsRoot.isSome:
result.withdrawalsRoot = some(w3Hash header.withdrawalsRoot.get)
result.withdrawals = some(toWdList(chain.getWithdrawals(header.withdrawalsRoot.get)))
if header.blobGasUsed.isSome:
result.blobGasUsed = some(w3Qty(header.blobGasUsed.get))
if header.excessBlobGas.isSome:
result.excessBlobGas = some(w3Qty(header.excessBlobGas.get))
if header.parentBeaconBlockRoot.isSome:
result.parentBeaconBlockRoot = some(w3Hash header.parentBeaconBlockRoot.get)
proc populateReceipt*(receipt: Receipt, gasUsed: GasInt, tx: Transaction,
txIndex: int, header: BlockHeader): ReceiptObject
{.gcsafe, raises: [ValidationError].} =
result = ReceiptObject()
result.transactionHash = w3Hash tx.rlpHash
result.transactionIndex = w3Qty(txIndex)
result.blockHash = w3Hash header.hash
result.blockNumber = w3Qty(header.blockNumber)
result.`from` = w3Addr tx.getSender()
result.to = some(w3Addr tx.destination)
result.cumulativeGasUsed = w3Qty(receipt.cumulativeGasUsed)
result.gasUsed = w3Qty(gasUsed)
result.`type` = some w3Qty(receipt.receiptType.ord)
if tx.contractCreation:
var sender: EthAddress
if tx.getSender(sender):
let contractAddress = generateAddress(sender, tx.nonce)
result.contractAddress = some(w3Addr contractAddress)
for log in receipt.logs:
# TODO: Work everywhere with either `Hash256` as topic or `array[32, byte]`
var topics: seq[Web3Topic]
for topic in log.topics:
topics.add Web3Topic(topic)
let logObject = FilterLog(
removed: false,
# TODO: Not sure what is difference between logIndex and TxIndex and how
# to calculate it.
logIndex: some(result.transactionIndex),
# Note: the next 4 fields cause a lot of duplication of data, but the spec
# is what it is. Not sure if other clients actually add this.
transactionIndex: some(result.transactionIndex),
transactionHash: some(result.transactionHash),
blockHash: some(result.blockHash),
blockNumber: some(result.blockNumber),
# The actual fields
address: w3Addr log.address,
data: log.data,
topics: topics
)
result.logs.add(logObject)
result.logsBloom = FixedBytes[256] receipt.bloom
# post-transaction stateroot (pre Byzantium).
if receipt.hasStateRoot:
result.root = some(w3Hash receipt.stateRoot)
else:
# 1 = success, 0 = failure.
result.status = some(w3Qty(receipt.status.uint64))
let normTx = eip1559TxNormalization(tx, header.baseFee.truncate(GasInt))
result.effectiveGasPrice = w3Qty(normTx.gasPrice)
if tx.txType == TxEip4844:
result.blobGasUsed = some(w3Qty(tx.versionedHashes.len.uint64 * GAS_PER_BLOB.uint64))
result.blobGasPrice = some(getBlobGasprice(header.excessBlobGas.get(0'u64)))