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Add last of 0.5.0 upgrades. Woo!

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This commit is contained in:
Paul Hauner
2019-03-19 19:43:31 +11:00
parent 35b90728c7
commit baca2c90ab
3 changed files with 40 additions and 31 deletions
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36
eth2/state_processing/src/per_epoch_processing/process_slashings.rs
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@@ -2,34 +2,32 @@ use types::{BeaconStateError as Error, *};
/// Process slashings.
///
/// Note: Utilizes the cache and will fail if the appropriate cache is not initialized.
///
/// Spec v0.4.0
pub fn process_slashings(state: &mut BeaconState, spec: &ChainSpec) -> Result<(), Error> {
/// Spec v0.5.0
pub fn process_slashings(
state: &mut BeaconState,
current_total_balance: u64,
spec: &ChainSpec,
) -> Result<(), Error> {
let current_epoch = state.current_epoch(spec);
let active_validator_indices =
state.get_cached_active_validator_indices(RelativeEpoch::Current, spec)?;
let total_balance = state.get_total_balance(&active_validator_indices[..], spec)?;
let total_at_start = state.get_slashed_balance(current_epoch + 1, spec)?;
let total_at_end = state.get_slashed_balance(current_epoch, spec)?;
let total_penalities = total_at_end - total_at_start;
for (index, validator) in state.validator_registry.iter().enumerate() {
if validator.slashed
&& (current_epoch
== validator.withdrawable_epoch - Epoch::from(spec.latest_slashed_exit_length / 2))
{
// TODO: check the following two lines are correct.
let total_at_start = state.get_slashed_balance(current_epoch + 1, spec)?;
let total_at_end = state.get_slashed_balance(current_epoch, spec)?;
let total_penalities = total_at_end.saturating_sub(total_at_start);
let should_penalize = current_epoch.as_usize()
== validator.withdrawable_epoch.as_usize() - spec.latest_slashed_exit_length / 2;
if validator.slashed && should_penalize {
let effective_balance = state.get_effective_balance(index, spec)?;
let penalty = std::cmp::max(
effective_balance * std::cmp::min(total_penalities * 3, total_balance)
/ total_balance,
effective_balance * std::cmp::min(total_penalities * 3, current_total_balance)
/ current_total_balance,
effective_balance / spec.min_penalty_quotient,
);
safe_sub_assign!(state.validator_balances[index], penalty);
state.validator_balances[index] -= penalty;
}
}