nimbus-eth1/premix/prestate.nim

43 lines
1.3 KiB
Nim

# Nimbus
# Copyright (c) 2020-2024 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
import
json, stint, stew/byteutils,
../nimbus/db/[core_db, storage_types], eth/[rlp, common],
../nimbus/tracer
proc generatePrestate*(nimbus, geth: JsonNode, blockNumber: UInt256, parent, header: BlockHeader, body: BlockBody) =
let
state = nimbus["state"]
headerHash = rlpHash(header)
var
chainDB = newCoreDbRef(DefaultDbMemory)
discard chainDB.setHead(parent, true)
discard chainDB.persistTransactions(blockNumber, body.transactions)
discard chainDB.persistUncles(body.uncles)
chainDB.kvt.put(genericHashKey(headerHash).toOpenArray, rlp.encode(header))
chainDB.addBlockNumberToHashLookup(header)
for k, v in state:
let key = hexToSeqByte(k)
let value = hexToSeqByte(v.getStr())
chainDB.kvt.put(key, value)
var metaData = %{
"blockNumber": %blockNumber.toHex,
"geth": geth
}
metaData.dumpMemoryDB(chainDB)
writeFile("block" & $blockNumber & ".json", metaData.pretty())