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Genesis beacon state: refactor update eth1 data (#8704)

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This commit is contained in:
terence tsao
2021-04-03 14:19:48 -07:00
committed by GitHub
parent 528cd89616
commit 1c6c058bba
1 changed files with 41 additions and 30 deletions
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71
beacon-chain/core/state/state.go
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@@ -56,41 +56,13 @@ import (
// return state
// This method differs from the spec so as to process deposits beforehand instead of the end of the function.
func GenesisBeaconState(deposits []*ethpb.Deposit, genesisTime uint64, eth1Data *ethpb.Eth1Data) (iface.BeaconState, error) {
if eth1Data == nil {
return nil, errors.New("no eth1data provided for genesis state")
}
state, err := EmptyGenesisState()
if err != nil {
return nil, err
}
// Process initial deposits.
var leaves [][]byte
for _, deposit := range deposits {
if deposit == nil || deposit.Data == nil {
return nil, fmt.Errorf("nil deposit or deposit with nil data cannot be processed: %v", deposit)
}
hash, err := deposit.Data.HashTreeRoot()
if err != nil {
return nil, err
}
leaves = append(leaves, hash[:])
}
var trie *trieutil.SparseMerkleTrie
if len(leaves) > 0 {
trie, err = trieutil.GenerateTrieFromItems(leaves, params.BeaconConfig().DepositContractTreeDepth)
if err != nil {
return nil, err
}
} else {
trie, err = trieutil.NewTrie(params.BeaconConfig().DepositContractTreeDepth)
if err != nil {
return nil, err
}
}
depositRoot := trie.Root()
eth1Data.DepositRoot = depositRoot[:]
err = state.SetEth1Data(eth1Data)
// Process initial deposits.
state, err = updateGenesisEth1Data(state, deposits, eth1Data)
if err != nil {
return nil, err
}
@@ -258,3 +230,42 @@ func IsValidGenesisState(chainStartDepositCount, currentTime uint64) bool {
}
return true
}
func updateGenesisEth1Data(state iface.BeaconState, deposits []*ethpb.Deposit, eth1Data *ethpb.Eth1Data) (iface.BeaconState, error) {
if eth1Data == nil {
return nil, errors.New("no eth1data provided for genesis state")
}
var leaves [][]byte
for _, deposit := range deposits {
if deposit == nil || deposit.Data == nil {
return nil, fmt.Errorf("nil deposit or deposit with nil data cannot be processed: %v", deposit)
}
hash, err := deposit.Data.HashTreeRoot()
if err != nil {
return nil, err
}
leaves = append(leaves, hash[:])
}
var trie *trieutil.SparseMerkleTrie
var err error
if len(leaves) > 0 {
trie, err = trieutil.GenerateTrieFromItems(leaves, params.BeaconConfig().DepositContractTreeDepth)
if err != nil {
return nil, err
}
} else {
trie, err = trieutil.NewTrie(params.BeaconConfig().DepositContractTreeDepth)
if err != nil {
return nil, err
}
}
depositRoot := trie.Root()
eth1Data.DepositRoot = depositRoot[:]
err = state.SetEth1Data(eth1Data)
if err != nil {
return nil, err
}
return state, nil
}