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validator.go
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validator.go
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package electra
import (
"context"
"errors"
"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
"github.com/prysmaticlabs/prysm/v5/config/params"
"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
)
// SwitchToCompoundingValidator
//
// Spec definition:
//
// def switch_to_compounding_validator(state: BeaconState, index: ValidatorIndex) -> None:
// validator = state.validators[index]
// if has_eth1_withdrawal_credential(validator):
// validator.withdrawal_credentials = COMPOUNDING_WITHDRAWAL_PREFIX + validator.withdrawal_credentials[1:]
// queue_excess_active_balance(state, index)
func SwitchToCompoundingValidator(ctx context.Context, s state.BeaconState, idx primitives.ValidatorIndex) error {
v, err := s.ValidatorAtIndex(idx)
if err != nil {
return err
}
if len(v.WithdrawalCredentials) == 0 {
return errors.New("validator has no withdrawal credentials")
}
if helpers.HasETH1WithdrawalCredential(v) {
v.WithdrawalCredentials[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
if err := s.UpdateValidatorAtIndex(idx, v); err != nil {
return err
}
return queueExcessActiveBalance(ctx, s, idx)
}
return nil
}
// queueExcessActiveBalance
//
// Spec definition:
//
// def queue_excess_active_balance(state: BeaconState, index: ValidatorIndex) -> None:
// balance = state.balances[index]
// if balance > MIN_ACTIVATION_BALANCE:
// excess_balance = balance - MIN_ACTIVATION_BALANCE
// state.balances[index] = MIN_ACTIVATION_BALANCE
// state.pending_balance_deposits.append(
// PendingBalanceDeposit(index=index, amount=excess_balance)
// )
func queueExcessActiveBalance(ctx context.Context, s state.BeaconState, idx primitives.ValidatorIndex) error {
bal, err := s.BalanceAtIndex(idx)
if err != nil {
return err
}
if bal > params.BeaconConfig().MinActivationBalance {
excessBalance := bal - params.BeaconConfig().MinActivationBalance
if err := s.UpdateBalancesAtIndex(idx, params.BeaconConfig().MinActivationBalance); err != nil {
return err
}
return s.AppendPendingBalanceDeposit(idx, excessBalance)
}
return nil
}
// QueueEntireBalanceAndResetValidator queues the entire balance and resets the validator. This is used in electra fork logic.
//
// Spec definition:
//
// def queue_entire_balance_and_reset_validator(state: BeaconState, index: ValidatorIndex) -> None:
// balance = state.balances[index]
// state.balances[index] = 0
// validator = state.validators[index]
// validator.effective_balance = 0
// validator.activation_eligibility_epoch = FAR_FUTURE_EPOCH
// state.pending_balance_deposits.append(
// PendingBalanceDeposit(index=index, amount=balance)
// )
//
//nolint:dupword
func QueueEntireBalanceAndResetValidator(ctx context.Context, s state.BeaconState, idx primitives.ValidatorIndex) error {
bal, err := s.BalanceAtIndex(idx)
if err != nil {
return err
}
if err := s.UpdateBalancesAtIndex(idx, 0); err != nil {
return err
}
v, err := s.ValidatorAtIndex(idx)
if err != nil {
return err
}
v.EffectiveBalance = 0
v.ActivationEligibilityEpoch = params.BeaconConfig().FarFutureEpoch
if err := s.UpdateValidatorAtIndex(idx, v); err != nil {
return err
}
return s.AppendPendingBalanceDeposit(idx, bal)
}