nimbus-eth2/beacon_chain/networking/network_metadata.nim

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# beacon_chain
# Copyright (c) 2018-2023 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: [].}
import
std/[sequtils, strutils, os],
stew/[byteutils, objects], stew/shims/macros, nimcrypto/hash,
web3/[ethtypes, conversions],
chronicles,
eth/common/eth_types_json_serialization,
../spec/eth2_ssz_serialization
# TODO(zah):
# We can compress the embedded states with snappy before embedding them here.
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# ATTENTION! This file is intentionally avoiding the Nim `/` operator for
# constructing paths. The standard operator is relying the `DirSep` constant
# which depends on the selected target OS (when doing cross-compilation), so
# the compile-time manipulation of paths performed here will break (e.g. when
# cross-compiling for Windows from Linux)
#
# Nim seems to need a more general solution for detecting the host OS during
# compilation, so a host OS specific separator can be used when deriving paths
# from `currentSourcePath`.
export
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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ethtypes, conversions, RuntimeConfig
const
vendorDir = currentSourcePath.parentDir.replace('\\', '/') & "/../../vendor"
incbinEnabled* = sizeof(pointer) == 8
type
Eth1BlockHash* = ethtypes.BlockHash
Eth1Network* = enum
mainnet
ropsten
rinkeby
goerli
sepolia
Eth2NetworkMetadata* = object
case incompatible*: bool
of false:
Support for driving multiple EL nodes from a single Nimbus BN (#4465) * Support for driving multiple EL nodes from a single Nimbus BN Full list of changes: * Eth1Monitor has been renamed to ELManager to match its current responsibilities better. * The ELManager is no longer optional in the code (it won't have a nil value under any circumstances). * The support for subscribing for headers was removed as it only worked with WebSockets and contributed significant complexity while bringing only a very minor advantage. * The `--web3-url` parameter has been deprecated in favor of a new `--el` parameter. The new parameter has a reasonable default value and supports specifying a different JWT for each connection. Each connection can also be configured with a different set of responsibilities (e.g. download deposits, validate blocks and/or produce blocks). On the command-line, these properties can be configured through URL properties stored in the #anchor part of the URL. In TOML files, they come with a very natural syntax (althrough the URL scheme is also supported). * The previously scattered EL-related state and logic is now moved to `eth1_monitor.nim` (this module will be renamed to `el_manager.nim` in a follow-up commit). State is assigned properly either to the `ELManager` or the to individual `ELConnection` objects where appropriate. The ELManager executes all Engine API requests against all attached EL nodes, in parallel. It compares their results and if there is a disagreement regarding the validity of a certain payload, this is detected and the beacon node is protected from publishing a block with a potential execution layer consensus bug in it. The BN provides metrics per EL node for the number of successful or failed requests for each type Engine API requests. If an EL node goes offline and connectivity is resoted later, we report the problem and the remedy in edge-triggered fashion. * More progress towards implementing Deneb block production in the VC and comparing the value of blocks produced by the EL and the builder API. * Adds a Makefile target for the zhejiang testnet
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# If the eth1Network is specified, the ELManager 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]
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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cfg*: RuntimeConfig
# Parsing `enr.Records` is still not possible at compile-time
bootstrapNodes*: seq[string]
depositContractBlock*: uint64
depositContractBlockHash*: Eth2Digest
# `genesisData` will have `len == 0` for networks with a still
# unknown genesis state.
when incbinEnabled:
genesisData*: seq[byte]
else:
genesisData*: string
genesisDepositsSnapshot*: string
else:
incompatibilityDesc*: string
template genesisBytes*(metadata: Eth2NetworkMetadata): auto =
when incbinEnabled:
metadata.genesisData
else:
metadata.genesisData.toOpenArrayByte(0, metadata.genesisData.high)
proc readBootstrapNodes*(path: string): seq[string] {.raises: [IOError].} =
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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# 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].} =
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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# 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), loadGenesis = true):
Eth2NetworkMetadata {.raises: [CatchableError].} =
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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# Load data in eth2-networks format
# https://github.com/eth-clients/eth2-networks
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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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"
depositContractBlockHashPath = path & "/deposit_contract_block_hash.txt"
bootstrapNodesPath = path & "/bootstrap_nodes.txt"
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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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:
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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defaultRuntimeConfig
depositContractBlockStr = if fileExists(depositContractBlockPath):
readFile(depositContractBlockPath).strip
else:
""
depositContractBlockHashStr = if fileExists(depositContractBlockHashPath):
readFile(depositContractBlockHashPath).strip
else:
""
deployBlockStr = if fileExists(deployBlockPath):
readFile(deployBlockPath).strip
else:
""
depositContractBlock = if depositContractBlockStr.len > 0:
parseBiggestUInt depositContractBlockStr
elif deployBlockStr.len > 0:
parseBiggestUInt deployBlockStr
elif not runtimeConfig.DEPOSIT_CONTRACT_ADDRESS.isDefaultValue:
raise newException(ValueError,
"A network with deposit contract should specify the " &
"deposit contract deployment block in a file named " &
"deposit_contract_block.txt or deploy_block.txt")
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else:
1'u64
depositContractBlockHash = if depositContractBlockHashStr.len > 0:
Eth2Digest.strictParse(depositContractBlockHashStr)
elif not runtimeConfig.DEPOSIT_CONTRACT_ADDRESS.isDefaultValue:
raise newException(ValueError,
"A network with deposit contract should specify the " &
"deposit contract deployment block hash in a file " &
"name deposit_contract_block_hash.txt")
else:
default(Eth2Digest)
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Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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bootstrapNodes = deduplicate(
readBootstrapNodes(bootstrapNodesPath) &
readBootEnr(bootEnrPath))
genesisData = if loadGenesis and fileExists(genesisPath):
readFile(genesisPath)
else:
""
genesisDepositsSnapshot = if fileExists(genesisDepositsSnapshotPath):
readFile(genesisDepositsSnapshotPath)
else:
""
Eth2NetworkMetadata(
incompatible: false,
eth1Network: eth1Network,
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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cfg: runtimeConfig,
bootstrapNodes: bootstrapNodes,
depositContractBlock: depositContractBlock,
depositContractBlockHash: depositContractBlockHash,
genesisData:
when incbinEnabled: toBytes genesisData
else: genesisData,
genesisDepositsSnapshot: genesisDepositsSnapshot)
Implement split preset/config support (#2710) * Implement split preset/config support This is the initial bulk refactor to introduce runtime config values in a number of places, somewhat replacing the existing mechanism of loading network metadata. It still needs more work, this is the initial refactor that introduces runtime configuration in some of the places that need it. The PR changes the way presets and constants work, to match the spec. In particular, a "preset" now refers to the compile-time configuration while a "cfg" or "RuntimeConfig" is the dynamic part. A single binary can support either mainnet or minimal, but not both. Support for other presets has been removed completely (can be readded, in case there's need). There's a number of outstanding tasks: * `SECONDS_PER_SLOT` still needs fixing * loading custom runtime configs needs redoing * checking constants against YAML file * yeerongpilly support `build/nimbus_beacon_node --network=yeerongpilly --discv5:no --log-level=DEBUG` * load fork epoch from config * fix fork digest sent in status * nicer error string for request failures * fix tools * one more * fixup * fixup * fixup * use "standard" network definition folder in local testnet Files are loaded from their standard locations, including genesis etc, to conform to the format used in the `eth2-networks` repo. * fix launch scripts, allow unknown config values * fix base config of rest test * cleanups * bundle mainnet config using common loader * fix spec links and names * only include supported preset in binary * drop yeerongpilly, add altair-devnet-0, support boot_enr.yaml
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except PresetIncompatibleError as err:
Eth2NetworkMetadata(incompatible: true,
incompatibilityDesc: err.msg)
proc loadCompileTimeNetworkMetadata(
path: string,
eth1Network = none(Eth1Network),
loadGenesis = true): Eth2NetworkMetadata {.raises: [].} =
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if fileExists(path & "/config.yaml"):
try:
result = loadEth2NetworkMetadata(path, eth1Network, loadGenesis)
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
else:
macros.error "config.yaml not found for network '" & path
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when const_preset == "gnosis":
import stew/assign2
when incbinEnabled:
let
gnosisGenesis {.importc: "gnosis_mainnet_genesis".}: ptr UncheckedArray[byte]
gnosisGenesisSize {.importc: "gnosis_mainnet_genesis_size".}: int
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chiadoGenesis {.importc: "gnosis_chiado_genesis".}: ptr UncheckedArray[byte]
chiadoGenesisSize {.importc: "gnosis_chiado_genesis_size".}: int
# let `.incbin` in assembly file find the binary file through search path
{.passc: "-I" & vendorDir.}
{.compile: "network_metadata_gnosis.S".}
const
gnosisMetadata = loadCompileTimeNetworkMetadata(
vendorDir & "/gnosis-chain-configs/mainnet",
none(Eth1Network), not incbinEnabled)
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chiadoMetadata = loadCompileTimeNetworkMetadata(
vendorDir & "/gnosis-chain-configs/chiado",
none(Eth1Network), not incbinEnabled)
static:
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for network in [gnosisMetadata, chiadoMetadata]:
checkForkConsistency(network.cfg)
for network in [gnosisMetadata, chiadoMetadata]:
doAssert network.cfg.ALTAIR_FORK_EPOCH < FAR_FUTURE_EPOCH
doAssert network.cfg.BELLATRIX_FORK_EPOCH < FAR_FUTURE_EPOCH
doAssert network.cfg.CAPELLA_FORK_EPOCH < FAR_FUTURE_EPOCH
doAssert network.cfg.DENEB_FORK_EPOCH == FAR_FUTURE_EPOCH
elif const_preset == "mainnet":
import stew/assign2
when incbinEnabled:
# Nim is very inefficent at loading large constants from binary files so we
# use this trick instead which saves significant amounts of compile time
let
mainnetGenesis {.importc: "eth2_mainnet_genesis".}: ptr UncheckedArray[byte]
mainnetGenesisSize {.importc: "eth2_mainnet_genesis_size".}: int
praterGenesis {.importc: "eth2_goerli_genesis".}: ptr UncheckedArray[byte]
praterGenesisSize {.importc: "eth2_goerli_genesis_size".}: int
sepoliaGenesis {.importc: "eth2_sepolia_genesis".}: ptr UncheckedArray[byte]
sepoliaGenesisSize {.importc: "eth2_sepolia_genesis_size".}: int
# let `.incbin` in assembly file find the binary file through search path
{.passc: "-I" & vendorDir.}
{.compile: "network_metadata_mainnet.S".}
const
mainnetMetadata = loadCompileTimeNetworkMetadata(
vendorDir & "/eth2-networks/shared/mainnet", some mainnet, not incbinEnabled)
praterMetadata = loadCompileTimeNetworkMetadata(
vendorDir & "/eth2-networks/shared/prater", some goerli, not incbinEnabled)
sepoliaMetadata = loadCompileTimeNetworkMetadata(
vendorDir & "/sepolia/bepolia", some sepolia, not incbinEnabled)
static:
for network in [mainnetMetadata, praterMetadata, sepoliaMetadata]:
checkForkConsistency(network.cfg)
for network in [mainnetMetadata, praterMetadata, sepoliaMetadata]:
doAssert network.cfg.ALTAIR_FORK_EPOCH < FAR_FUTURE_EPOCH
doAssert network.cfg.BELLATRIX_FORK_EPOCH < FAR_FUTURE_EPOCH
doAssert network.cfg.CAPELLA_FORK_EPOCH < FAR_FUTURE_EPOCH
doAssert network.cfg.DENEB_FORK_EPOCH == FAR_FUTURE_EPOCH
proc getMetadataForNetwork*(
networkName: string): Eth2NetworkMetadata {.raises: [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
if networkName == "ropsten":
warn "Ropsten is unsupported; https://blog.ethereum.org/2022/11/30/ropsten-shutdown-announcement suggests migrating to Goerli or Sepolia"
template withGenesis(metadata, genesis: untyped): untyped =
when incbinEnabled:
var tmp = metadata
case tmp.incompatible
of false:
assign(tmp.genesisData, genesis.toOpenArray(0, `genesis Size` - 1))
of true:
raiseAssert "Unreachable" # `loadCompileTimeNetworkMetadata`
tmp
else:
metadata
let metadata =
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when const_preset == "gnosis":
case toLowerAscii(networkName)
of "gnosis":
withGenesis(gnosisMetadata, gnosisGenesis)
of "gnosis-chain":
warn "`--network:gnosis-chain` is deprecated, " &
"use `--network:gnosis` instead"
withGenesis(gnosisMetadata, gnosisGenesis)
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of "chiado":
withGenesis(chiadoMetadata, chiadoGenesis)
else:
loadRuntimeMetadata()
elif const_preset == "mainnet":
case toLowerAscii(networkName)
of "mainnet":
withGenesis(mainnetMetadata, mainnetGenesis)
of "prater", "goerli":
withGenesis(praterMetadata, praterGenesis)
of "sepolia":
withGenesis(sepoliaMetadata, sepoliaGenesis)
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: [IOError].} =
## Returns the run-time config for a network specified on the command line
## If the network is not explicitly specified, the function will act as the
## regular Nimbus binary, returning the mainnet config.
##
## TODO the assumption that the input variable is a CLI config option is not
## quite appropriate in such as low-level function. The "assume mainnet by
## default" behavior is something that should be handled closer to the `conf`
## layer.
let metadata =
if eth2Network.isSome:
getMetadataForNetwork(eth2Network.get)
else:
when const_preset == "mainnet":
mainnetMetadata
elif const_preset == "gnosis":
gnosisMetadata
else:
# This is a non-standard build (i.e. minimal), and the function was
# most likely executed in a test. The best we can do is return a fully
# default config:
return defaultRuntimeConfig
return
case metadata.incompatible
of false:
metadata.cfg
of true:
# `getMetadataForNetwork` / `loadCompileTimeNetworkMetadata`
raiseAssert "Unreachable"