/// <summary>
/// Initiate the exit of the validator with index ``index``.
/// </summary>
public void InitiateValidatorExit(BeaconState state, ValidatorIndex index)
{
// Return if validator already initiated exit
var validator = state.Validators[(int)(ulong)index];
if (validator.ExitEpoch != _chainConstants.FarFutureEpoch)
{
return;
}
// Compute exit queue epoch
var exitEpochs = state.Validators
.Where(x => x.ExitEpoch != _chainConstants.FarFutureEpoch)
.Select(x => x.ExitEpoch);
var maxExitEpoch = exitEpochs.DefaultIfEmpty().Max();
var currentEpoch = _beaconStateAccessor.GetCurrentEpoch(state);
var activationExitEpoch = _beaconChainUtility.ComputeActivationExitEpoch(currentEpoch);
var exitQueueEpoch = Epoch.Max(maxExitEpoch, activationExitEpoch);
var exitQueueChurn = state.Validators.Where(x => x.ExitEpoch == exitQueueEpoch).Count();
var validatorChurnLimit = _beaconStateAccessor.GetValidatorChurnLimit(state);
if ((ulong)exitQueueChurn >= validatorChurnLimit)
{
exitQueueEpoch += new Epoch(1);
}
// Set validator exit epoch and withdrawable epoch
validator.SetExitEpoch(exitQueueEpoch);
var withdrawableEpoch = validator.ExitEpoch + _timeParameterOptions.CurrentValue.MinimumValidatorWithdrawabilityDelay;
validator.SetWithdrawableEpoch(withdrawableEpoch);
}
public Gwei GetLatestAttestingBalance(IStore store, Hash32 root)
{
if (!store.TryGetCheckpointState(store.JustifiedCheckpoint, out var state))
{
throw new Exception();
}
var currentEpoch = _beaconStateAccessor.GetCurrentEpoch(state);
var activeIndexes = _beaconStateAccessor.GetActiveValidatorIndices(state, currentEpoch);
if (!store.TryGetBlock(root, out var rootBlock))
{
throw new Exception();
}
var rootSlot = rootBlock.Slot;
var balance = new Gwei(0);
foreach (var index in activeIndexes)
{
if (store.TryGetLatestMessage(index, out var latestMessage))
{
var ancestor = GetAncestor(store, latestMessage.Root, rootSlot);
if (ancestor == root)
{
var validator = state.Validators[(int)(ulong)index];
balance += validator.EffectiveBalance;
}
}
}
return(balance);
}
public IEnumerable <PendingAttestation> GetMatchingSourceAttestations(BeaconState state, Epoch epoch)
{
var currentEpoch = _beaconStateAccessor.GetCurrentEpoch(state);
var previousEpoch = _beaconStateAccessor.GetPreviousEpoch(state);
if (epoch != currentEpoch && epoch != previousEpoch)
{
throw new ArgumentOutOfRangeException(nameof(epoch), epoch, $"The epoch for attestions must be either the current epoch {currentEpoch} or previous epoch {previousEpoch}.");
}
if (epoch == currentEpoch)
{
return(state.CurrentEpochAttestations);
}
return(state.PreviousEpochAttestations);
}
