public void ProcessDeposit(BeaconState state, Deposit deposit)
{
_logger.LogInformation(Event.ProcessDeposit, "Process block operation deposit {Deposit} for state {BeaconState}.", deposit, state);
var gweiValues = _gweiValueOptions.CurrentValue;
// Verify the Merkle branch
var isValid = _beaconChainUtility.IsValidMerkleBranch(
deposit.Data.HashTreeRoot(),
deposit.Proof,
_chainConstants.DepositContractTreeDepth + 1, // Add 1 for the 'List' length mix-in
state.Eth1DepositIndex,
state.Eth1Data.DepositRoot);
if (!isValid)
{
throw new Exception($"Invalid Merle branch for deposit for validator poublic key {deposit.Data.PublicKey}");
}
// Deposits must be processed in order
state.IncreaseEth1DepositIndex();
var publicKey = deposit.Data.PublicKey;
var amount = deposit.Data.Amount;
var validatorPublicKeys = state.Validators.Select(x => x.PublicKey).ToList();
if (!validatorPublicKeys.Contains(publicKey))
{
// Verify the deposit signature (proof of possession) for new validators
// Note: The deposit contract does not check signatures.
// Note: Deposits are valid across forks, thus the deposit domain is retrieved directly from 'computer_domain'.
var domain = _beaconChainUtility.ComputeDomain(_signatureDomainOptions.CurrentValue.Deposit);
if (!_cryptographyService.BlsVerify(publicKey, deposit.Data.SigningRoot(), deposit.Data.Signature, domain))
{
return;
}
var effectiveBalance = Gwei.Min(amount - (amount % gweiValues.EffectiveBalanceIncrement), gweiValues.MaximumEffectiveBalance);
var newValidator = new Validator(
publicKey,
deposit.Data.WithdrawalCredentials,
effectiveBalance
,
_chainConstants.FarFutureEpoch,
_chainConstants.FarFutureEpoch,
_chainConstants.FarFutureEpoch,
_chainConstants.FarFutureEpoch);
state.AddValidatorWithBalance(newValidator, amount);
}
else
{
var index = (ValidatorIndex)(ulong)validatorPublicKeys.IndexOf(publicKey);
_beaconStateMutator.IncreaseBalance(state, index, amount);
}
}
public static BeaconState CreateGenesisState(IServiceProvider testServiceProvider, ulong numberOfValidators)
{
ChainConstants chainConstants = testServiceProvider.GetService <ChainConstants>();
GweiValues gweiValues = testServiceProvider.GetService <IOptions <GweiValues> >().Value;
InitialValues initialValues = testServiceProvider.GetService <IOptions <InitialValues> >().Value;
TimeParameters timeParameters = testServiceProvider.GetService <IOptions <TimeParameters> >().Value;
StateListLengths stateListLengths = testServiceProvider.GetService <IOptions <StateListLengths> >().Value;
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
var eth1BlockHash = new Bytes32(Enumerable.Repeat((byte)0x42, 32).ToArray());
var state = new BeaconState(
0,
new Core2.Containers.Fork(new ForkVersion(new byte[ForkVersion.Length]), new ForkVersion(new byte[ForkVersion.Length]), Epoch.Zero),
new Eth1Data(Root.Zero, numberOfValidators, eth1BlockHash),
//numberOfValidators,
new BeaconBlockHeader(cryptographyService.HashTreeRoot(BeaconBlockBody.Zero)),
Enumerable.Repeat(eth1BlockHash, (int)stateListLengths.EpochsPerHistoricalVector).ToArray(),
timeParameters.SlotsPerHistoricalRoot,
stateListLengths.EpochsPerHistoricalVector,
stateListLengths.EpochsPerSlashingsVector,
chainConstants.JustificationBitsLength
);
// We directly insert in the initial validators,
// as it is much faster than creating and processing genesis deposits for every single test case.
for (var index = (ulong)0; index < numberOfValidators; index++)
{
var validator = BuildMockValidator(chainConstants, initialValues, gweiValues, timeParameters, index, gweiValues.MaximumEffectiveBalance);
state.AddValidatorWithBalance(validator, gweiValues.MaximumEffectiveBalance);
state.IncreaseEth1DepositIndex();
}
// Process genesis activations
foreach (var validator in state.Validators)
{
if (validator.EffectiveBalance >= gweiValues.MaximumEffectiveBalance)
{
validator.SetEligible(chainConstants.GenesisEpoch);
validator.SetActive(chainConstants.GenesisEpoch);
}
}
return(state);
}