Official Go implementation of the Ethereum protocol
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go-ethereum/beacon/blsync/config.go

114 lines
4.6 KiB

// Copyright 2022 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package blsync
import (
"github.com/ethereum/go-ethereum/beacon/types"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/urfave/cli/v2"
)
// lightClientConfig contains beacon light client configuration
type lightClientConfig struct {
*types.ChainConfig
Checkpoint common.Hash
}
var (
MainnetConfig = lightClientConfig{
ChainConfig: (&types.ChainConfig{
GenesisValidatorsRoot: common.HexToHash("0x4b363db94e286120d76eb905340fdd4e54bfe9f06bf33ff6cf5ad27f511bfe95"),
GenesisTime: 1606824023,
}).
AddFork("GENESIS", 0, []byte{0, 0, 0, 0}).
AddFork("ALTAIR", 74240, []byte{1, 0, 0, 0}).
AddFork("BELLATRIX", 144896, []byte{2, 0, 0, 0}).
AddFork("CAPELLA", 194048, []byte{3, 0, 0, 0}).
AddFork("DENEB", 269568, []byte{4, 0, 0, 0}),
Checkpoint: common.HexToHash("0x388be41594ec7d6a6894f18c73f3469f07e2c19a803de4755d335817ed8e2e5a"),
}
SepoliaConfig = lightClientConfig{
ChainConfig: (&types.ChainConfig{
GenesisValidatorsRoot: common.HexToHash("0xd8ea171f3c94aea21ebc42a1ed61052acf3f9209c00e4efbaaddac09ed9b8078"),
GenesisTime: 1655733600,
}).
AddFork("GENESIS", 0, []byte{144, 0, 0, 105}).
AddFork("ALTAIR", 50, []byte{144, 0, 0, 112}).
AddFork("BELLATRIX", 100, []byte{144, 0, 0, 113}).
AddFork("CAPELLA", 56832, []byte{144, 0, 0, 114}).
AddFork("DENEB", 132608, []byte{144, 0, 0, 115}),
Checkpoint: common.HexToHash("0x1005a6d9175e96bfbce4d35b80f468e9bff0b674e1e861d16e09e10005a58e81"),
}
)
func makeChainConfig(ctx *cli.Context) lightClientConfig {
var config lightClientConfig
customConfig := ctx.IsSet(utils.BeaconConfigFlag.Name)
utils.CheckExclusive(ctx, utils.MainnetFlag, utils.SepoliaFlag, utils.BeaconConfigFlag)
switch {
case ctx.Bool(utils.MainnetFlag.Name):
config = MainnetConfig
case ctx.Bool(utils.SepoliaFlag.Name):
config = SepoliaConfig
default:
if !customConfig {
config = MainnetConfig
}
}
// Genesis root and time should always be specified together with custom chain config
if customConfig {
if !ctx.IsSet(utils.BeaconGenesisRootFlag.Name) {
utils.Fatalf("Custom beacon chain config is specified but genesis root is missing")
}
if !ctx.IsSet(utils.BeaconGenesisTimeFlag.Name) {
utils.Fatalf("Custom beacon chain config is specified but genesis time is missing")
}
if !ctx.IsSet(utils.BeaconCheckpointFlag.Name) {
utils.Fatalf("Custom beacon chain config is specified but checkpoint is missing")
}
config.ChainConfig = &types.ChainConfig{
GenesisTime: ctx.Uint64(utils.BeaconGenesisTimeFlag.Name),
}
if c, err := hexutil.Decode(ctx.String(utils.BeaconGenesisRootFlag.Name)); err == nil && len(c) <= 32 {
copy(config.GenesisValidatorsRoot[:len(c)], c)
} else {
utils.Fatalf("Invalid hex string", "beacon.genesis.gvroot", ctx.String(utils.BeaconGenesisRootFlag.Name), "error", err)
}
if err := config.ChainConfig.LoadForks(ctx.String(utils.BeaconConfigFlag.Name)); err != nil {
utils.Fatalf("Could not load beacon chain config file", "file name", ctx.String(utils.BeaconConfigFlag.Name), "error", err)
}
} else {
if ctx.IsSet(utils.BeaconGenesisRootFlag.Name) {
utils.Fatalf("Genesis root is specified but custom beacon chain config is missing")
}
if ctx.IsSet(utils.BeaconGenesisTimeFlag.Name) {
utils.Fatalf("Genesis time is specified but custom beacon chain config is missing")
}
}
// Checkpoint is required with custom chain config and is optional with pre-defined config
if ctx.IsSet(utils.BeaconCheckpointFlag.Name) {
if c, err := hexutil.Decode(ctx.String(utils.BeaconCheckpointFlag.Name)); err == nil && len(c) <= 32 {
copy(config.Checkpoint[:len(c)], c)
} else {
utils.Fatalf("Invalid hex string", "beacon.checkpoint", ctx.String(utils.BeaconCheckpointFlag.Name), "error", err)
}
}
return config
}