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Altair consensus changes and refactors (#2279)

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## Proposed Changes

Implement the consensus changes necessary for the upcoming Altair hard fork.

## Additional Info

This is quite a heavy refactor, with pivotal types like the `BeaconState` and `BeaconBlock` changing from structs to enums. This ripples through the whole codebase with field accesses changing to methods, e.g. `state.slot` => `state.slot()`.


Co-authored-by: realbigsean <seananderson33@gmail.com>
This commit is contained in:
Michael Sproul
2021-07-09 06:15:32 +00:00
parent 89361573d4
commit b4689e20c6
271 changed files with 9652 additions and 8444 deletions
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22
consensus/state_processing/src/common/initiate_validator_exit.rs
View File

@@ -3,40 +3,36 @@ use std::cmp::max;
use types::{BeaconStateError as Error, *};
/// Initiate the exit of the validator of the given `index`.
///
/// Spec v0.12.1
pub fn initiate_validator_exit<T: EthSpec>(
state: &mut BeaconState<T>,
index: usize,
spec: &ChainSpec,
) -> Result<(), Error> {
if index >= state.validators.len() {
return Err(Error::UnknownValidator(index as u64));
}
// Return if the validator already initiated exit
if state.validators[index].exit_epoch != spec.far_future_epoch {
if state.get_validator(index)?.exit_epoch != spec.far_future_epoch {
return Ok(());
}
// Ensure the exit cache is built.
state.exit_cache.build(&state.validators, spec)?;
state.build_exit_cache(spec)?;
// Compute exit queue epoch
let delayed_epoch = state.compute_activation_exit_epoch(state.current_epoch(), spec)?;
let mut exit_queue_epoch = state
.exit_cache
.exit_cache()
.max_epoch()?
.map_or(delayed_epoch, |epoch| max(epoch, delayed_epoch));
let exit_queue_churn = state.exit_cache.get_churn_at(exit_queue_epoch)?;
let exit_queue_churn = state.exit_cache().get_churn_at(exit_queue_epoch)?;
if exit_queue_churn >= state.get_churn_limit(spec)? {
exit_queue_epoch.safe_add_assign(1)?;
}
state.exit_cache.record_validator_exit(exit_queue_epoch)?;
state.validators[index].exit_epoch = exit_queue_epoch;
state.validators[index].withdrawable_epoch =
state
.exit_cache_mut()
.record_validator_exit(exit_queue_epoch)?;
state.get_validator_mut(index)?.exit_epoch = exit_queue_epoch;
state.get_validator_mut(index)?.withdrawable_epoch =
exit_queue_epoch.safe_add(spec.min_validator_withdrawability_delay)?;
Ok(())