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Add config PROPORTIONAL_SLASHING_MULTIPLIER (#7275)

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* Add config
* Merge refs/heads/master into prop-slashing-mul
* Fixed a typo reported by Radek
* Merge branch 'prop-slashing-mul' of github.com:prysmaticlabs/prysm into prop-slashing-mul
This commit is contained in:
terence tsao
2020-09-19 15:04:24 -07:00
committed by GitHub
parent 303edbde58
commit 1f6afa8547
4 changed files with 16 additions and 12 deletions
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5
beacon-chain/core/epoch/epoch_processing.go
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@@ -147,10 +147,11 @@ func ProcessRegistryUpdates(state *stateTrie.BeaconState) (*stateTrie.BeaconStat
// def process_slashings(state: BeaconState) -> None:
// epoch = get_current_epoch(state)
// total_balance = get_total_active_balance(state)
// adjusted_total_slashing_balance = min(sum(state.slashings) * PROPORTIONAL_SLASHING_MULTIPLIER, total_balance)
// for index, validator in enumerate(state.validators):
// if validator.slashed and epoch + EPOCHS_PER_SLASHINGS_VECTOR // 2 == validator.withdrawable_epoch:
// increment = EFFECTIVE_BALANCE_INCREMENT # Factored out from penalty numerator to avoid uint64 overflow
// penalty_numerator = validator.effective_balance // increment * min(sum(state.slashings) * 3, total_balance)
// penalty_numerator = validator.effective_balance // increment * adjusted_total_slashing_balance
// penalty = penalty_numerator // total_balance * increment
// decrease_balance(state, ValidatorIndex(index), penalty)
func ProcessSlashings(state *stateTrie.BeaconState) (*stateTrie.BeaconState, error) {
@@ -173,10 +174,10 @@ func ProcessSlashings(state *stateTrie.BeaconState) (*stateTrie.BeaconState, err
// a callback is used here to apply the following actions to all validators
// below equally.
increment := params.BeaconConfig().EffectiveBalanceIncrement
minSlashing := mathutil.Min(totalSlashing*params.BeaconConfig().ProportionalSlashingMultiplier, totalBalance)
err = state.ApplyToEveryValidator(func(idx int, val *ethpb.Validator) (bool, error) {
correctEpoch := (currentEpoch + exitLength/2) == val.WithdrawableEpoch
if val.Slashed && correctEpoch {
minSlashing := mathutil.Min(totalSlashing*3, totalBalance)
penaltyNumerator := val.EffectiveBalance / increment * minSlashing
penalty := penaltyNumerator / totalBalance * increment
if err := helpers.DecreaseBalance(state, uint64(idx), penalty); err != nil {