/// <summary>
/// Initiate the exit of the validator with index ``index``.
/// </summary>
public void InitiateValidatorExit(BeaconState state, ValidatorIndex index)
{
// Return if validator already initiated exit
Validator validator = state.Validators[(int)index];
if (validator.ExitEpoch != _chainConstants.FarFutureEpoch)
{
return;
}
// Compute exit queue epoch
IEnumerable <Epoch> exitEpochs = state.Validators
.Where(x => x.ExitEpoch != _chainConstants.FarFutureEpoch)
.Select(x => x.ExitEpoch);
Epoch maxExitEpoch = exitEpochs.DefaultIfEmpty().Max();
Epoch currentEpoch = _beaconStateAccessor.GetCurrentEpoch(state);
Epoch activationExitEpoch = _beaconChainUtility.ComputeActivationExitEpoch(currentEpoch);
Epoch exitQueueEpoch = Epoch.Max(maxExitEpoch, activationExitEpoch);
int exitQueueChurn = state.Validators.Count(x => x.ExitEpoch == exitQueueEpoch);
ulong validatorChurnLimit = _beaconStateAccessor.GetValidatorChurnLimit(state);
if ((ulong)exitQueueChurn >= validatorChurnLimit)
{
exitQueueEpoch += new Epoch(1);
}
// Set validator exit epoch and withdrawable epoch
validator.SetExitEpoch(exitQueueEpoch);
Epoch withdrawableEpoch = validator.ExitEpoch + _timeParameterOptions.CurrentValue.MinimumValidatorWithdrawabilityDelay;
validator.SetWithdrawableEpoch(withdrawableEpoch);
}
