nimbus-eth1/fluffy/network/beacon/beacon_init_loader.nim

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# Nimbus - Portal Network
# Copyright (c) 2022-2023 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
beacon_chain/networking/network_metadata,
beacon_chain/spec/forks,
beacon_chain/spec/datatypes/altair,
beacon_chain/beacon_clock,
beacon_chain/conf
type
NetworkInitData* = object
clock*: BeaconClock
metaData*: Eth2NetworkMetadata
forks*: ForkDigests
genesis_validators_root*: Eth2Digest
proc loadNetworkData*(
networkName: string): NetworkInitData {.raises: [CatchableError].} =
let
metadata =
try:
loadEth2Network(some("mainnet"))
except CatchableError as exc:
raiseAssert(exc.msg)
genesisState =
try:
template genesisData(): auto = metadata.genesis.bakedBytes
newClone(readSszForkedHashedBeaconState(
2023-06-04 06:00:50 +00:00
metadata.cfg, genesisData.toOpenArray(genesisData.low, genesisData.high)))
except CatchableError as err:
raiseAssert "Invalid baked-in state: " & err.msg
beaconClock = BeaconClock.init(getStateField(genesisState[], genesis_time))
genesis_validators_root =
getStateField(genesisState[], genesis_validators_root)
forks = newClone ForkDigests.init(metadata.cfg, genesis_validators_root)
return NetworkInitData(
clock: beaconClock,
metaData: metaData,
forks: forks[],
genesis_validators_root: genesis_validators_root
)