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support modifying genesis.json for capella (#12283)

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Co-authored-by: kasey <kasey@users.noreply.github.com>
This commit is contained in:
kasey 2023-04-14 15:32:40 -05:00 committed by GitHub
parent 52d72c989e
commit c09977d8a8
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2 changed files with 24 additions and 8 deletions
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8
cmd/prysmctl/testnet/generate_genesis.go
View File

@ -260,9 +260,17 @@ func generateGenesis(ctx context.Context) (state.BeaconState, error) {
if err := json.Unmarshal(gbytes, gen); err != nil {
return nil, err
}
// set timestamps for genesis and shanghai fork
gen.Timestamp = f.GenesisTime
gen.Config.ShanghaiTime = interop.GethShanghaiTime(f.GenesisTime, params.BeaconConfig())
if v > version.Altair {
// set ttd to zero so EL goes post-merge immediately
gen.Config.TerminalTotalDifficulty = big.NewInt(0)
}
} else {
gen = interop.GethTestnetGenesis(f.GenesisTime, params.BeaconConfig())
}
if f.GethGenesisJsonOut != "" {
gbytes, err := json.MarshalIndent(gen, "", "\t")
if err != nil {

24
runtime/interop/genesis.go
View File

@ -77,14 +77,9 @@ var minerBalance = big.NewInt(0)
// The following value is for the key used by the e2e test "miner" node.
const DefaultCliqueSigner = "0x0000000000000000000000000000000000000000000000000000000000000000878705ba3f8bc32fcf7f4caa1a35e72af65cf7660000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
// GethTestnetGenesis creates a genesis.json for eth1 clients with a set of defaults suitable for ephemeral testnets,
// like in an e2e test. The parameters are minimal but the full value is returned unmarshaled so that it can be
// customized as desired.
func GethTestnetGenesis(genesisTime uint64, cfg *clparams.BeaconChainConfig) *core.Genesis {
ttd, ok := big.NewInt(0).SetString(clparams.BeaconConfig().TerminalTotalDifficulty, 10)
if !ok {
panic(fmt.Sprintf("unable to parse TerminalTotalDifficulty as an integer = %s", clparams.BeaconConfig().TerminalTotalDifficulty))
}
// GethShanghaiTime calculates the absolute time of the shanghai (aka capella) fork block
// by adding the relative time of the capella the fork epoch to the given genesis timestamp.
func GethShanghaiTime(genesisTime uint64, cfg *clparams.BeaconChainConfig) *uint64 {
var shanghaiTime *uint64
if cfg.CapellaForkEpoch != math.MaxUint64 {
startSlot, err := slots.EpochStart(cfg.CapellaForkEpoch)
@ -94,6 +89,19 @@ func GethTestnetGenesis(genesisTime uint64, cfg *clparams.BeaconChainConfig) *co
shanghaiTime = &newTime
}
}
return shanghaiTime
}
// GethTestnetGenesis creates a genesis.json for eth1 clients with a set of defaults suitable for ephemeral testnets,
// like in an e2e test. The parameters are minimal but the full value is returned unmarshaled so that it can be
// customized as desired.
func GethTestnetGenesis(genesisTime uint64, cfg *clparams.BeaconChainConfig) *core.Genesis {
ttd, ok := big.NewInt(0).SetString(clparams.BeaconConfig().TerminalTotalDifficulty, 10)
if !ok {
panic(fmt.Sprintf("unable to parse TerminalTotalDifficulty as an integer = %s", clparams.BeaconConfig().TerminalTotalDifficulty))
}
shanghaiTime := GethShanghaiTime(genesisTime, cfg)
cc := &params.ChainConfig{
ChainID: big.NewInt(defaultTestChainId),
HomesteadBlock: bigz,