nimbus-eth1/premix/debug.nim

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Nim
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import
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json, os, stint, eth/trie/db, byteutils, eth/common,
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../nimbus/db/[db_chain], chronicles, ../nimbus/vm_state,
../nimbus/p2p/executor, premixcore, prestate, ../nimbus/tracer
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proc prepareBlockEnv(node: JsonNode, memoryDB: TrieDatabaseRef) =
let state = node["state"]
for k, v in state:
let key = hexToSeqByte(k)
let value = hexToSeqByte(v.getStr())
memoryDB.put(key, value)
proc executeBlock(blockEnv: JsonNode, memoryDB: TrieDatabaseRef, blockNumber: Uint256) =
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let
parentNumber = blockNumber - 1
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chainDB = newBaseChainDB(memoryDB, false)
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parent = chainDB.getBlockHeader(parentNumber)
header = chainDB.getBlockHeader(blockNumber)
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body = chainDB.getBlockBody(header.blockHash)
let transaction = memoryDB.beginTransaction()
defer: transaction.dispose()
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let
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vmState = newBaseVMState(parent.stateRoot, header, chainDB)
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validationResult = processBlock(chainDB, parent, header, body, vmState)
if validationResult != ValidationResult.OK:
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error "block validation error", validationResult
else:
info "block validation success", validationResult, blockNumber
transaction.rollback()
dumpDebuggingMetaData(chainDB, header, body, vmState, false)
let
fileName = "debug" & $blockNumber & ".json"
nimbus = json.parseFile(fileName)
geth = blockEnv["geth"]
processNimbusData(nimbus)
# premix data goes to report page
generatePremixData(nimbus, geth)
# prestate data goes to debug tool and contains data
# needed to execute single block
generatePrestate(nimbus, geth, blockNumber, parent, header, body)
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proc main() =
if paramCount() == 0:
echo "usage: debug blockxxx.json"
quit(QuitFailure)
let
blockEnv = json.parseFile(paramStr(1))
memoryDB = newMemoryDB()
blockNumber = UInt256.fromHex(blockEnv["blockNumber"].getStr())
prepareBlockEnv(blockEnv, memoryDB)
executeBlock(blockEnv, memoryDB, blockNumber)
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main()