nimbus-eth1/nimbus/tracer.nim

283 lines
9.6 KiB
Nim

import
db/[db_chain, accounts_cache, capturedb], eth/common, utils, json,
constants, vm_state, vm_types, transaction, p2p/executor,
eth/trie/db, nimcrypto, strutils,
chronicles, rpc/hexstrings, launcher,
stew/results
when defined(geth):
import db/geth_db
proc getParentHeader(db: BaseChainDB, header: BlockHeader): BlockHeader =
db.blockHeader(header.blockNumber.truncate(uint64) - 1)
else:
proc getParentHeader(self: BaseChainDB, header: BlockHeader): BlockHeader =
self.getBlockHeader(header.parentHash)
proc `%`(x: openArray[byte]): JsonNode =
result = %toHex(x, false)
proc toJson(receipt: Receipt): JsonNode =
result = newJObject()
result["cumulativeGasUsed"] = %receipt.cumulativeGasUsed
result["bloom"] = %receipt.bloom
result["logs"] = %receipt.logs
if receipt.hasStateRoot:
result["root"] = %($receipt.stateRoot)
else:
result["status"] = %receipt.status
proc dumpReceipts*(chainDB: BaseChainDB, header: BlockHeader): JsonNode =
result = newJArray()
for receipt in chainDB.getReceipts(header.receiptRoot):
result.add receipt.toJson
proc toJson*(receipts: seq[Receipt]): JsonNode =
result = newJArray()
for receipt in receipts:
result.add receipt.toJson
proc captureAccount(n: JsonNode, db: AccountsCache, address: EthAddress, name: string) =
var jaccount = newJObject()
jaccount["name"] = %name
jaccount["address"] = %("0x" & $address)
let nonce = db.getNonce(address)
let balance = db.getBalance(address)
let codeHash = db.getCodeHash(address)
let storageRoot = db.getStorageRoot(address)
jaccount["nonce"] = %(encodeQuantity(nonce).string.toLowerAscii)
jaccount["balance"] = %("0x" & balance.toHex)
let code = db.getCode(address)
jaccount["codeHash"] = %("0x" & ($codeHash).toLowerAscii)
jaccount["code"] = %("0x" & toHex(code, true))
jaccount["storageRoot"] = %("0x" & ($storageRoot).toLowerAscii)
var storage = newJObject()
for key, value in db.storage(address):
storage["0x" & key.dumpHex] = %("0x" & value.dumpHex)
jaccount["storage"] = storage
n.add jaccount
proc dumpMemoryDB*(node: JsonNode, memoryDB: TrieDatabaseRef) =
var n = newJObject()
for k, v in pairsInMemoryDB(memoryDB):
n[k.toHex(false)] = %v
node["state"] = n
const
senderName = "sender"
recipientName = "recipient"
minerName = "miner"
uncleName = "uncle"
internalTxName = "internalTx"
proc traceTransaction*(chainDB: BaseChainDB, header: BlockHeader,
body: BlockBody, txIndex: int, tracerFlags: set[TracerFlags] = {}): JsonNode =
let
parent = chainDB.getParentHeader(header)
# we add a memory layer between backend/lower layer db
# and capture state db snapshot during transaction execution
memoryDB = newMemoryDB()
captureDB = newCaptureDB(chainDB.db, memoryDB)
captureTrieDB = trieDB captureDB
networkParams = chainDB.networkParams
captureChainDB = newBaseChainDB(captureTrieDB, false, chainDB.networkId, networkParams) # prune or not prune?
captureFlags = tracerFlags + {EnableAccount}
vmState = BaseVMState.new(header, captureChainDB, captureFlags)
var stateDb = vmState.stateDB
if header.txRoot == BLANK_ROOT_HASH: return newJNull()
doAssert(body.transactions.calcTxRoot == header.txRoot)
doAssert(body.transactions.len != 0)
var
gasUsed: GasInt
before = newJArray()
after = newJArray()
stateDiff = %{"before": before, "after": after}
beforeRoot: Hash256
let
miner = vmState.coinbase()
for idx, tx in body.transactions:
let sender = tx.getSender
let recipient = tx.getRecipient(sender)
if idx == txIndex:
vmState.enableTracing()
before.captureAccount(stateDb, sender, senderName)
before.captureAccount(stateDb, recipient, recipientName)
before.captureAccount(stateDb, miner, minerName)
stateDb.persist()
stateDiff["beforeRoot"] = %($stateDb.rootHash)
beforeRoot = stateDb.rootHash
let rc = vmState.processTransaction(tx, sender, header)
gasUsed = if rc.isOk: rc.value else: 0
if idx == txIndex:
after.captureAccount(stateDb, sender, senderName)
after.captureAccount(stateDb, recipient, recipientName)
after.captureAccount(stateDb, miner, minerName)
vmState.removeTracedAccounts(sender, recipient, miner)
stateDb.persist()
stateDiff["afterRoot"] = %($stateDb.rootHash)
break
# internal transactions:
var stateBefore = AccountsCache.init(captureTrieDB, beforeRoot, chainDB.pruneTrie)
for idx, acc in tracedAccountsPairs(vmState):
before.captureAccount(stateBefore, acc, internalTxName & $idx)
for idx, acc in tracedAccountsPairs(vmState):
after.captureAccount(stateDb, acc, internalTxName & $idx)
result = vmState.getTracingResult()
result["gas"] = %gasUsed
if TracerFlags.DisableStateDiff notin tracerFlags:
result["stateDiff"] = stateDiff
# now we dump captured state db
if TracerFlags.DisableState notin tracerFlags:
result.dumpMemoryDB(memoryDB)
proc dumpBlockState*(db: BaseChainDB, header: BlockHeader, body: BlockBody, dumpState = false): JsonNode =
let
parent = db.getParentHeader(header)
memoryDB = newMemoryDB()
captureDB = newCaptureDB(db.db, memoryDB)
captureTrieDB = trieDB captureDB
networkParams = db.networkParams
captureChainDB = newBaseChainDB(captureTrieDB, false, db.networkId, networkParams)
# we only need stack dump if we want to scan for internal transaction address
captureFlags = {EnableTracing, DisableMemory, DisableStorage, EnableAccount}
vmState = BaseVMState.new(header, captureChainDB, captureFlags)
miner = vmState.coinbase()
var
before = newJArray()
after = newJArray()
stateBefore = AccountsCache.init(captureTrieDB, parent.stateRoot, db.pruneTrie)
for idx, tx in body.transactions:
let sender = tx.getSender
let recipient = tx.getRecipient(sender)
before.captureAccount(stateBefore, sender, senderName & $idx)
before.captureAccount(stateBefore, recipient, recipientName & $idx)
before.captureAccount(stateBefore, miner, minerName)
for idx, uncle in body.uncles:
before.captureAccount(stateBefore, uncle.coinbase, uncleName & $idx)
discard vmState.processBlockNotPoA(header, body)
var stateAfter = vmState.stateDB
for idx, tx in body.transactions:
let sender = tx.getSender
let recipient = tx.getRecipient(sender)
after.captureAccount(stateAfter, sender, senderName & $idx)
after.captureAccount(stateAfter, recipient, recipientName & $idx)
vmState.removeTracedAccounts(sender, recipient)
after.captureAccount(stateAfter, miner, minerName)
vmState.removeTracedAccounts(miner)
for idx, uncle in body.uncles:
after.captureAccount(stateAfter, uncle.coinbase, uncleName & $idx)
vmState.removeTracedAccounts(uncle.coinbase)
# internal transactions:
for idx, acc in tracedAccountsPairs(vmState):
before.captureAccount(stateBefore, acc, internalTxName & $idx)
for idx, acc in tracedAccountsPairs(vmState):
after.captureAccount(stateAfter, acc, internalTxName & $idx)
result = %{"before": before, "after": after}
if dumpState:
result.dumpMemoryDB(memoryDB)
proc traceBlock*(chainDB: BaseChainDB, header: BlockHeader, body: BlockBody, tracerFlags: set[TracerFlags] = {}): JsonNode =
let
parent = chainDB.getParentHeader(header)
memoryDB = newMemoryDB()
captureDB = newCaptureDB(chainDB.db, memoryDB)
captureTrieDB = trieDB captureDB
networkParams = chainDB.networkParams
captureChainDB = newBaseChainDB(captureTrieDB, false, chainDB.networkId, networkParams)
captureFlags = tracerFlags + {EnableTracing}
vmState = BaseVMState.new(header, captureChainDB, captureFlags)
if header.txRoot == BLANK_ROOT_HASH: return newJNull()
doAssert(body.transactions.calcTxRoot == header.txRoot)
doAssert(body.transactions.len != 0)
var gasUsed = GasInt(0)
for tx in body.transactions:
let
sender = tx.getSender
rc = vmState.processTransaction(tx, sender, header)
if rc.isOk:
gasUsed = gasUsed + rc.value
result = vmState.getTracingResult()
result["gas"] = %gasUsed
if TracerFlags.DisableState notin tracerFlags:
result.dumpMemoryDB(memoryDB)
proc traceTransactions*(chainDB: BaseChainDB, header: BlockHeader, blockBody: BlockBody): JsonNode =
result = newJArray()
for i in 0 ..< blockBody.transactions.len:
result.add traceTransaction(chainDB, header, blockBody, i, {DisableState})
proc dumpDebuggingMetaData*(chainDB: BaseChainDB, header: BlockHeader,
blockBody: BlockBody, vmState: BaseVMState, launchDebugger = true) =
let
blockNumber = header.blockNumber
var
memoryDB = newMemoryDB()
captureDB = newCaptureDB(chainDB.db, memoryDB)
captureTrieDB = trieDB captureDB
networkParams = chainDB.networkParams
captureChainDB = newBaseChainDB(captureTrieDB, false, chainDB.networkId, networkParams)
bloom = createBloom(vmState.receipts)
let blockSummary = %{
"receiptsRoot": %("0x" & toHex(calcReceiptRoot(vmState.receipts).data)),
"stateRoot": %("0x" & toHex(vmState.stateDB.rootHash.data)),
"logsBloom": %("0x" & toHex(bloom))
}
var metaData = %{
"blockNumber": %blockNumber.toHex,
"txTraces": traceTransactions(captureChainDB, header, blockBody),
"stateDump": dumpBlockState(captureChainDB, header, blockBody),
"blockTrace": traceBlock(captureChainDB, header, blockBody, {DisableState}),
"receipts": toJson(vmState.receipts),
"block": blockSummary
}
metaData.dumpMemoryDB(memoryDB)
let jsonFileName = "debug" & $blockNumber & ".json"
if launchDebugger:
launchPremix(jsonFileName, metaData)
else:
writeFile(jsonFileName, metaData.pretty())