nimbus-eth2/scripts/connect_to_testnet.nims

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import
confutils, strutils, strformat, ospaths
const
rootDir = thisDir() / ".."
bootstrapFile = "bootstrap_nodes.txt"
depositContractFile = "deposit_contract.txt"
genesisFile = "genesis.ssz"
configFile = "config.yaml"
clientsOrg = "zah" # "eth2-clients"
testnetsRepo = "eth2-testnets"
testnetsRepoGitUrl = "git://github.com/" & clientsOrg & "/" & testnetsRepo
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
if not dirExists(allTestnetsDir):
cd buildDir
exec &"git clone {testnetsRepoGitUrl}"
cd allTestnetsDir
exec &"git remote set-url origin {testnetsRepoGitUrl}"
exec "git reset --hard master"
exec "git pull"
let testnetDir = allTestnetsDir / team / testnet
if not dirExists(testnetDir):
echo &"No metadata files exists for the '{testnetName}' testnet"
quit 1
proc checkRequiredFile(fileName: string) =
let filePath = testnetDir / fileName
if not fileExists(filePath):
echo &"The required file {fileName} is not present in '{testnetDir}'."
quit 1
checkRequiredFile bootstrapFile
checkRequiredFile genesisFile
var preset = testnetDir / configFile
if not fileExists(preset): preset = "minimal"
let
dataDirName = testnetName.replace("/", "_")
dataDir = buildDir / "data" / dataDirName
beaconNodeBinary = buildDir / "beacon_node_" & dataDirName
nimFlags = "-d:release --lineTrace:on -d:chronicles_log_level=DEBUG"
var depositContractOpt = ""
let depositContractFile = testnetDir / depositContractFile
if fileExists(depositContractFile):
depositContractOpt = "--deposit-contract=" & readFile(depositContractFile).strip
cd rootDir
exec &"""nim c {nimFlags} -d:"const_preset={preset}" -o:"{beaconNodeBinary}" beacon_chain/beacon_node.nim"""
exec replace(&"""{beaconNodeBinary}
--data-dir="{dataDir}"
--bootstrap-file="{testnetDir/bootstrapFile}"
--state-snapshot="{testnetDir/genesisFile}" """ & depositContractOpt, "\n", " ")