5394726caf
Added a new field `exit_cache` to the BeaconState, which caches the number of validators exiting at each epoch.
47 lines
1.6 KiB
Rust
47 lines
1.6 KiB
Rust
use crate::common::initiate_validator_exit;
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use types::{BeaconStateError as Error, *};
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/// Slash the validator with index ``index``.
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///
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/// Spec v0.6.1
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pub fn slash_validator(
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state: &mut BeaconState,
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slashed_index: usize,
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opt_whistleblower_index: Option<usize>,
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spec: &ChainSpec,
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) -> Result<(), Error> {
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if slashed_index >= state.validator_registry.len() || slashed_index >= state.balances.len() {
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return Err(BeaconStateError::UnknownValidator);
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}
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let current_epoch = state.current_epoch(spec);
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initiate_validator_exit(state, slashed_index, spec)?;
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state.validator_registry[slashed_index].slashed = true;
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state.validator_registry[slashed_index].withdrawable_epoch =
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current_epoch + Epoch::from(spec.latest_slashed_exit_length);
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let slashed_balance = state.get_effective_balance(slashed_index, spec)?;
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state.set_slashed_balance(
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current_epoch,
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state.get_slashed_balance(current_epoch, spec)? + slashed_balance,
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spec,
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)?;
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let proposer_index =
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state.get_beacon_proposer_index(state.slot, RelativeEpoch::Current, spec)?;
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let whistleblower_index = opt_whistleblower_index.unwrap_or(proposer_index);
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let whistleblowing_reward = slashed_balance / spec.whistleblowing_reward_quotient;
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let proposer_reward = whistleblowing_reward / spec.proposer_reward_quotient;
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safe_add_assign!(state.balances[proposer_index], proposer_reward);
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safe_add_assign!(
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state.balances[whistleblower_index],
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whistleblowing_reward - proposer_reward
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);
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safe_sub_assign!(state.balances[slashed_index], whistleblowing_reward);
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Ok(())
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}
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