318 lines
11 KiB
Nim
318 lines
11 KiB
Nim
# beacon_chain
|
|
# Copyright (c) 2018-2022 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.
|
|
|
|
{.push raises: [Defect].}
|
|
|
|
import
|
|
std/[sequtils, strutils, os],
|
|
stew/byteutils, stew/shims/macros, nimcrypto/hash,
|
|
eth/common/eth_types as commonEthTypes,
|
|
web3/[ethtypes, conversions],
|
|
chronicles,
|
|
eth/common/eth_types_json_serialization,
|
|
ssz_serialization/navigator,
|
|
../spec/eth2_ssz_serialization,
|
|
../spec/datatypes/phase0
|
|
|
|
from ../consensus_object_pools/block_pools_types_light_client
|
|
import LightClientDataImportMode
|
|
|
|
# ATTENTION! This file will produce a large C file, because we are inlining
|
|
# genesis states as C literals in the generated code (and blobs in the final
|
|
# binary). It makes sense to keep the file small and separated from the rest
|
|
# of the module in order go gain maximum efficiency in incremental compilation.
|
|
#
|
|
# TODO(zah):
|
|
# We can compress the embedded states with snappy before embedding them here.
|
|
|
|
export
|
|
ethtypes, conversions, RuntimeConfig
|
|
|
|
type
|
|
Eth1BlockHash* = ethtypes.BlockHash
|
|
|
|
Eth1Network* = enum
|
|
mainnet
|
|
ropsten
|
|
rinkeby
|
|
goerli
|
|
sepolia
|
|
|
|
Eth2NetworkConfigDefaults* = object
|
|
## Network specific config defaults
|
|
lightClientEnable*: bool
|
|
lightClientDataServe*: bool
|
|
lightClientDataImportMode*: LightClientDataImportMode
|
|
|
|
Eth2NetworkMetadata* = object
|
|
case incompatible*: bool
|
|
of false:
|
|
# TODO work-around a Nim codegen issue where upon constant assignment
|
|
# the compiler will copy `incompatibilityDesc` even when the case
|
|
# branch is not active and thus it will override the first variable
|
|
# in this branch.
|
|
dummy: string
|
|
# If the eth1Network is specified, the Eth1Monitor will perform some
|
|
# additional checks to ensure we are connecting to a web3 provider
|
|
# serving data for the same network. The value can be set to `None`
|
|
# for custom networks and testing purposes.
|
|
eth1Network*: Option[Eth1Network]
|
|
cfg*: RuntimeConfig
|
|
|
|
# Parsing `enr.Records` is still not possible at compile-time
|
|
bootstrapNodes*: seq[string]
|
|
|
|
depositContractDeployedAt*: BlockHashOrNumber
|
|
|
|
# Please note that we are using `string` here because SSZ.decode
|
|
# is not currently usable at compile time and we want to load the
|
|
# network metadata into a constant.
|
|
#
|
|
# We could have also used `seq[byte]`, but this results in a lot
|
|
# more generated code that slows down compilation. The impact on
|
|
# compilation times of embedding the genesis as a string is roughly
|
|
# 0.1s on my machine (you can test this by choosing an invalid name
|
|
# for the genesis file below).
|
|
#
|
|
# `genesisData` will have `len == 0` for networks with a still
|
|
# unknown genesis state.
|
|
genesisData*: string
|
|
genesisDepositsSnapshot*: string
|
|
|
|
configDefaults*: Eth2NetworkConfigDefaults
|
|
else:
|
|
incompatibilityDesc*: string
|
|
|
|
const
|
|
eth2NetworksDir = currentSourcePath.parentDir.replace('\\', '/') & "/../../vendor/eth2-networks"
|
|
mergeTestnetsDir = currentSourcePath.parentDir.replace('\\', '/') & "/../../vendor/merge-testnets"
|
|
|
|
proc readBootstrapNodes*(path: string): seq[string] {.raises: [IOError, Defect].} =
|
|
# Read a list of ENR values from a YAML file containing a flat list of entries
|
|
if fileExists(path):
|
|
splitLines(readFile(path)).
|
|
filterIt(it.startsWith("enr:")).
|
|
mapIt(it.strip())
|
|
else:
|
|
@[]
|
|
|
|
proc readBootEnr*(path: string): seq[string] {.raises: [IOError, Defect].} =
|
|
# Read a list of ENR values from a YAML file containing a flat list of entries
|
|
if fileExists(path):
|
|
splitLines(readFile(path)).
|
|
filterIt(it.startsWith("- enr:")).
|
|
mapIt(it[2..^1].strip())
|
|
else:
|
|
@[]
|
|
|
|
proc loadEth2NetworkMetadata*(path: string, eth1Network = none(Eth1Network)): Eth2NetworkMetadata
|
|
{.raises: [CatchableError, Defect].} =
|
|
# Load data in eth2-networks format
|
|
# https://github.com/eth-clients/eth2-networks
|
|
|
|
try:
|
|
let
|
|
genesisPath = path & "/genesis.ssz"
|
|
genesisDepositsSnapshotPath = path & "/genesis_deposit_contract_snapshot.ssz"
|
|
configPath = path & "/config.yaml"
|
|
deployBlockPath = path & "/deploy_block.txt"
|
|
depositContractBlockPath = path & "/deposit_contract_block.txt"
|
|
bootstrapNodesPath = path & "/bootstrap_nodes.txt"
|
|
bootEnrPath = path & "/boot_enr.yaml"
|
|
runtimeConfig = if fileExists(configPath):
|
|
let (cfg, unknowns) = readRuntimeConfig(configPath)
|
|
if unknowns.len > 0:
|
|
when nimvm:
|
|
# TODO better printing
|
|
echo "Unknown constants in file: " & unknowns
|
|
else:
|
|
warn "Unknown constants in config file", unknowns
|
|
cfg
|
|
else:
|
|
defaultRuntimeConfig
|
|
|
|
depositContractBlock = if fileExists(depositContractBlockPath):
|
|
readFile(depositContractBlockPath).strip
|
|
else:
|
|
""
|
|
|
|
deployBlock = if fileExists(deployBlockPath):
|
|
readFile(deployBlockPath).strip
|
|
else:
|
|
""
|
|
|
|
depositContractDeployedAt = if depositContractBlock.len > 0:
|
|
BlockHashOrNumber.init(depositContractBlock)
|
|
elif deployBlock.len > 0:
|
|
BlockHashOrNumber.init(deployBlock)
|
|
else:
|
|
BlockHashOrNumber(isHash: false, number: 1)
|
|
|
|
bootstrapNodes = deduplicate(
|
|
readBootstrapNodes(bootstrapNodesPath) &
|
|
readBootEnr(bootEnrPath))
|
|
|
|
genesisData = if fileExists(genesisPath):
|
|
readFile(genesisPath)
|
|
else:
|
|
""
|
|
|
|
genesisDepositsSnapshot = if fileExists(genesisDepositsSnapshotPath):
|
|
readFile(genesisDepositsSnapshotPath)
|
|
else:
|
|
""
|
|
|
|
shouldSupportLightClient =
|
|
if genesisData.len >= 40:
|
|
# SSZ processing at compile time does not work well.
|
|
#
|
|
# `BeaconState` layout:
|
|
# ```
|
|
# - genesis_time: uint64
|
|
# - genesis_validators_root: Eth2Digest
|
|
# - ...
|
|
# ```
|
|
#
|
|
# Comparing the first 40 bytes covers those two fields,
|
|
# which should identify the network with high likelihood.
|
|
# ''.join('%02X'%b for b in open("network_name/genesis.ssz", "rb").read()[:40])
|
|
let data = (genesisData[0 ..< 40].toHex())
|
|
data in [
|
|
# Kiln
|
|
"0C572B620000000099B09FCD43E5905236C370F184056BEC6E6638CFC31A323B304FC4AA789CB4AD",
|
|
# Ropsten
|
|
"F0DB94620000000044F1E56283CA88B35C789F7F449E52339BC1FEFE3A45913A43A6D16EDCD33CF1",
|
|
# Prater
|
|
"60F4596000000000043DB0D9A83813551EE2F33450D23797757D430911A9320530AD8A0EABC43EFB",
|
|
# Sepolia
|
|
"607DB06200000000D8EA171F3C94AEA21EBC42A1ED61052ACF3F9209C00E4EFBAADDAC09ED9B8078",
|
|
]
|
|
else:
|
|
false
|
|
|
|
configDefaults =
|
|
Eth2NetworkConfigDefaults(
|
|
lightClientEnable:
|
|
false, # Only produces debug logs so far
|
|
lightClientDataServe:
|
|
shouldSupportLightClient,
|
|
lightClientDataImportMode:
|
|
if shouldSupportLightClient:
|
|
LightClientDataImportMode.OnlyNew
|
|
else:
|
|
LightClientDataImportMode.None
|
|
)
|
|
|
|
Eth2NetworkMetadata(
|
|
incompatible: false,
|
|
eth1Network: eth1Network,
|
|
cfg: runtimeConfig,
|
|
bootstrapNodes: bootstrapNodes,
|
|
depositContractDeployedAt: depositContractDeployedAt,
|
|
genesisData: genesisData,
|
|
genesisDepositsSnapshot: genesisDepositsSnapshot,
|
|
configDefaults: configDefaults)
|
|
|
|
except PresetIncompatibleError as err:
|
|
Eth2NetworkMetadata(incompatible: true,
|
|
incompatibilityDesc: err.msg)
|
|
|
|
proc loadCompileTimeNetworkMetadata(
|
|
path: string,
|
|
eth1Network = none(Eth1Network)): Eth2NetworkMetadata {.raises: [Defect].} =
|
|
try:
|
|
result = loadEth2NetworkMetadata(path, eth1Network)
|
|
if result.incompatible:
|
|
macros.error "The current build is misconfigured. " &
|
|
"Attempt to load an incompatible network metadata: " &
|
|
result.incompatibilityDesc
|
|
except CatchableError as err:
|
|
macros.error "Failed to load network metadata at '" & path & "': " & err.msg
|
|
|
|
template eth2Network(path: string, eth1Network: Eth1Network): Eth2NetworkMetadata =
|
|
loadCompileTimeNetworkMetadata(eth2NetworksDir & "/" & path,
|
|
some eth1Network)
|
|
|
|
template mergeTestnet(path: string, eth1Network: Eth1Network): Eth2NetworkMetadata =
|
|
loadCompileTimeNetworkMetadata(mergeTestnetsDir & "/" & path,
|
|
some eth1Network)
|
|
|
|
when not defined(gnosisChainBinary):
|
|
when const_preset == "mainnet":
|
|
const
|
|
mainnetMetadata* = eth2Network("shared/mainnet", mainnet)
|
|
praterMetadata* = eth2Network("shared/prater", goerli)
|
|
ropstenMetadata = mergeTestnet("ropsten-beacon-chain", ropsten)
|
|
sepoliaMetadata = mergeTestnet("sepolia", sepolia)
|
|
static:
|
|
for network in [mainnetMetadata, praterMetadata, ropstenMetadata, sepoliaMetadata]:
|
|
checkForkConsistency(network.cfg)
|
|
|
|
proc getMetadataForNetwork*(networkName: string): Eth2NetworkMetadata {.raises: [Defect, IOError].} =
|
|
template loadRuntimeMetadata: auto =
|
|
if fileExists(networkName / "config.yaml"):
|
|
try:
|
|
loadEth2NetworkMetadata(networkName)
|
|
except CatchableError as exc:
|
|
fatal "Cannot load network", msg = exc.msg, networkName
|
|
quit 1
|
|
else:
|
|
fatal "config.yaml not found for network", networkName
|
|
quit 1
|
|
|
|
var
|
|
metadata = when const_preset == "mainnet":
|
|
case toLowerAscii(networkName)
|
|
of "mainnet":
|
|
mainnetMetadata
|
|
of "prater":
|
|
praterMetadata
|
|
of "ropsten":
|
|
ropstenMetadata
|
|
of "sepolia":
|
|
sepoliaMetadata
|
|
else:
|
|
loadRuntimeMetadata()
|
|
else:
|
|
loadRuntimeMetadata()
|
|
|
|
if metadata.incompatible:
|
|
fatal "The selected network is not compatible with the current build",
|
|
reason = metadata.incompatibilityDesc
|
|
quit 1
|
|
metadata
|
|
|
|
proc getRuntimeConfig*(
|
|
eth2Network: Option[string]): RuntimeConfig {.raises: [Defect, IOError].} =
|
|
if eth2Network.isSome:
|
|
return getMetadataForNetwork(eth2Network.get).cfg
|
|
defaultRuntimeConfig
|
|
|
|
else:
|
|
const
|
|
gnosisMetadata* = loadCompileTimeNetworkMetadata(
|
|
currentSourcePath.parentDir.replace('\\', '/') & "/../../media/gnosis")
|
|
|
|
static: checkForkConsistency(gnosisMetadata.cfg)
|
|
|
|
proc checkNetworkParameterUse*(eth2Network: Option[string]) =
|
|
# Support `gnosis-chain` as network name which was used in v22.3
|
|
if eth2Network.isSome and eth2Network.get notin ["gnosis", "gnosis-chain"]:
|
|
fatal "The only supported value for the --network parameter is 'gnosis'"
|
|
quit 1
|
|
|
|
if eth2Network.isSome and eth2Network.get == "gnosis-chain":
|
|
warn "`--network:gnosis-chain` is deprecated, use `--network:gnosis` instead"
|
|
|
|
proc getRuntimeConfig*(eth2Network: Option[string]): RuntimeConfig {.raises: [Defect, IOError].} =
|
|
checkNetworkParameterUse eth2Network
|
|
gnosisMetadata.cfg
|
|
|
|
proc extractGenesisValidatorRootFromSnapshot*(
|
|
snapshot: string): Eth2Digest {.raises: [Defect, IOError, SszError].} =
|
|
sszMount(snapshot, phase0.BeaconState).genesis_validators_root[]
|