nimbus-eth2/scripts/test_merge_node.nim

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# beacon_chain
# Copyright (c) 2022 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
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# https://notes.ethereum.org/@9AeMAlpyQYaAAyuj47BzRw/rkwW3ceVY
# Monitor traffic: socat -v TCP-LISTEN:9550,fork TCP-CONNECT:127.0.0.1:8550
import
std/options,
stew/results,
chronos,
../beacon_chain/eth1/eth1_monitor
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when (NimMajor, NimMinor) < (1, 4):
{.push raises: [Defect].}
else:
{.push raises: [].}
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from std/os import paramCount, paramStr
from nimcrypto/utils import fromHex
from web3/engine_api_types import PayloadExecutionStatus
from ../beacon_chain/networking/network_metadata import Eth1Network
from ../beacon_chain/spec/datatypes/base import ZERO_HASH
from ../beacon_chain/spec/presets import Eth1Address, defaultRuntimeConfig
# TODO factor this out and have a version with the result of the JWT secret
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# slurp for testing purposes
proc readJwtSecret(jwtSecretFile: string): Result[seq[byte], cstring] =
# https://github.com/ethereum/execution-apis/blob/v1.0.0-beta.1/src/engine/authentication.md#key-distribution
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# If such a parameter is given, but the file cannot be read, or does not
# contain a hex-encoded key of 256 bits, the client should treat this as an
# error: either abort the startup, or show error and continue without
# exposing the authenticated port.
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const MIN_SECRET_LEN = 32
try:
let lines = readLines(jwtSecretFile, 1)
if lines.len > 0:
# Secret JWT key is parsed in constant time using nimcrypto:
# https://github.com/cheatfate/nimcrypto/pull/44
let secret = utils.fromHex(lines[0])
if secret.len >= MIN_SECRET_LEN:
ok(secret)
else:
err("JWT secret not at least 256 bits")
else:
err("JWT secret file empty")
except IOError as exc:
err("JWT secret file could not be read from")
proc run() {.async.} =
if paramCount() < 2:
echo "args are: web3url jwtsecretfilename"
let
eth1Monitor = Eth1Monitor.init(
defaultRuntimeConfig, db = nil, nil, @[paramStr(1)],
none(DepositTreeSnapshot), none(Eth1Network), false,
some readJwtSecret(paramStr(2)).get)
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await eth1Monitor.ensureDataProvider()
try:
await eth1Monitor.exchangeTransitionConfiguration()
except ValueError as exc:
# Expected, since nothing here sets up the Nimbus TTD correctly
echo "exchangeTransitionConfiguration ValueError: " & exc.msg
echo "Invalid TTD errors are fine in this context"
waitFor run()