mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
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d17996f8b0
* Update V3 from V4 * Fix build v3 -> v4 * Update ssz * Update beacon_chain.pb.go * Fix formatter import * Update update-mockgen.sh comment to v4 * Fix conflicts. Pass build and tests * Fix test
64 lines
2.6 KiB
Go
64 lines
2.6 KiB
Go
package interop
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import (
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"context"
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"time"
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"github.com/pkg/errors"
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coreState "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
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statenative "github.com/prysmaticlabs/prysm/v4/beacon-chain/state/state-native"
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"github.com/prysmaticlabs/prysm/v4/config/params"
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"github.com/prysmaticlabs/prysm/v4/container/trie"
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ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
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)
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// GeneratePreminedGenesisState deterministically given a genesis time and number of validators.
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// If a genesis time of 0 is supplied it is set to the current time.
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func GeneratePreminedGenesisState(ctx context.Context, genesisTime, numValidators uint64, e1d *ethpb.Eth1Data) (*ethpb.BeaconState, []*ethpb.Deposit, error) {
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privKeys, pubKeys, err := DeterministicallyGenerateKeys(0 /*startIndex*/, numValidators)
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if err != nil {
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return nil, nil, errors.Wrapf(err, "could not deterministically generate keys for %d validators", numValidators)
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}
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depositDataItems, depositDataRoots, err := DepositDataFromKeys(privKeys, pubKeys)
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if err != nil {
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return nil, nil, errors.Wrap(err, "could not generate deposit data from keys")
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}
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return GeneratePreminedGenesisStateFromDepositData(ctx, genesisTime, depositDataItems, depositDataRoots, e1d)
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}
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// GeneratePreminedGenesisStateFromDepositData creates a genesis state given a list of
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// deposit data items and their corresponding roots.
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func GeneratePreminedGenesisStateFromDepositData(
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ctx context.Context, genesisTime uint64, depositData []*ethpb.Deposit_Data, depositDataRoots [][]byte, e1d *ethpb.Eth1Data,
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) (*ethpb.BeaconState, []*ethpb.Deposit, error) {
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t, err := trie.GenerateTrieFromItems(depositDataRoots, params.BeaconConfig().DepositContractTreeDepth)
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if err != nil {
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return nil, nil, errors.Wrap(err, "could not generate Merkle trie for deposit proofs")
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}
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deposits, err := GenerateDepositsFromData(depositData, t)
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if err != nil {
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return nil, nil, errors.Wrap(err, "could not generate deposits from the deposit data provided")
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}
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root, err := t.HashTreeRoot()
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if err != nil {
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return nil, nil, errors.Wrap(err, "could not hash tree root of deposit trie")
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}
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if genesisTime == 0 {
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genesisTime = uint64(time.Now().Unix())
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}
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beaconState, err := coreState.PreminedGenesisBeaconState(ctx, deposits, genesisTime, ðpb.Eth1Data{
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DepositRoot: root[:],
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DepositCount: uint64(len(deposits)),
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BlockHash: e1d.BlockHash,
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})
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if err != nil {
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return nil, nil, errors.Wrap(err, "could not generate genesis state")
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}
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pbState, err := statenative.ProtobufBeaconStatePhase0(beaconState.ToProtoUnsafe())
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if err != nil {
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return nil, nil, err
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}
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return pbState, deposits, nil
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}
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