nimbus-eth2/scripts/connect_to_testnet.nims

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import
confutils, strutils, strformat, os
const
rootDir = thisDir() / ".."
bootstrapFile = "bootstrap_nodes.txt"
depositContractFile = "deposit_contract.txt"
genesisFile = "genesis.ssz"
configFile = "config.yaml"
testnetsRepo = "eth2-testnets"
let
testnetsOrg = getEnv("ETH2_TESTNETS_ORG", "eth2-clients")
testnetsGitUrl = getEnv("ETH2_TESTNETS_GIT_URL", "https://github.com/" & testnetsOrg & "/" & testnetsRepo)
mode = Verbose
proc validateTestnetName(parts: openarray[string]): auto =
if parts.len != 2:
echo "The testnet name should have the format `client/network-name`"
quit 1
(parts[0], parts[1])
cli do (testnetName {.argument.}: string):
let
nameParts = testnetName.split "/"
(team, testnet) = if nameParts.len > 1: validateTestnetName nameParts
else: ("nimbus", testnetName)
let
buildDir = rootDir / "build"
allTestnetsDir = buildDir / testnetsRepo
rmDir(allTestnetsDir)
cd buildDir
exec &"git clone --quiet --depth=1 {testnetsGitUrl}"
let testnetDir = allTestnetsDir / team / testnet
if not system.dirExists(testnetDir):
echo &"No metadata files exists for the '{testnetName}' testnet"
quit 1
proc checkRequiredFile(fileName: string) =
let filePath = testnetDir / fileName
if not system.fileExists(filePath):
echo &"The required file {fileName} is not present in '{testnetDir}'."
quit 1
checkRequiredFile bootstrapFile
checkRequiredFile genesisFile
var preset = testnetDir / configFile
if not system.fileExists(preset): preset = "minimal"
let
dataDirName = testnetName.replace("/", "_")
dataDir = buildDir / "data" / dataDirName
validatorsDir = dataDir / "validators"
dumpDir = dataDir / "dump"
beaconNodeBinary = buildDir / "beacon_node_" & dataDirName
nimFlags = "-d:chronicles_log_level=DEBUG " & getEnv("NIM_PARAMS")
var depositContractOpt = ""
let depositContractFile = testnetDir / depositContractFile
if system.fileExists(depositContractFile):
depositContractOpt = "--deposit-contract=" & readFile(depositContractFile).strip
if system.dirExists(dataDir):
2019-12-09 15:30:02 +00:00
block resetDataDir:
# We reset the testnet data dir if the existing data dir is
# incomplete (it misses a genesis file) or if it has a genesis
# file from an older testnet:
if system.fileExists(dataDir/genesisFile):
let localGenesisContent = readFile(dataDir/genesisFile)
let testnetGenesisContent = readFile(testnetDir/genesisFile)
if localGenesisContent == testnetGenesisContent:
break
echo "Detected testnet restart. Deleting previous database..."
rmDir dataDir
cd rootDir
exec &"""nim c {nimFlags} -d:"const_preset={preset}" -o:"{beaconNodeBinary}" beacon_chain/beacon_node.nim"""
mkDir dumpDir
proc execIgnoringExitCode(s: string) =
# reduces the error output when interrupting an external command with Ctrl+C
try:
exec s
except OsError:
discard
if depositContractOpt.len > 0 and not system.dirExists(validatorsDir):
mode = Silent
echo "\nPlease enter your Goerli Eth1 private key in hex form (e.g. 0x1a2...f3c) in order to become a validator (you'll need access to 32 GoETH)."
echo "Hit Enter to skip this."
# is there no other way to print without a trailing newline?
exec "printf '> '"
let privKey = readLineFromStdin()
if privKey.len > 0:
mkDir validatorsDir
mode = Verbose
execIgnoringExitCode replace(&"""{beaconNodeBinary} makeDeposits
--random-deposits=1
--deposits-dir="{validatorsDir}"
--deposit-private-key={privKey}
--web3-url=wss://goerli.infura.io/ws/v3/809a18497dd74102b5f37d25aae3c85a
{depositContractOpt}
""", "\n", " ")
quit()
mode = Verbose
execIgnoringExitCode replace(&"""{beaconNodeBinary}
--data-dir="{dataDir}"
--dump=true
--bootstrap-file="{testnetDir/bootstrapFile}"
--state-snapshot="{testnetDir/genesisFile}" """ & depositContractOpt, "\n", " ")