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Fix race condition in VC block proposal service (#1282)

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Closes #918
Closes #923
This commit is contained in:
Michael Sproul
2020-07-07 14:03:21 +10:00
committed by GitHub
parent 5bc8fea2e0
commit 20a48df80a
12 changed files with 329 additions and 179 deletions
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6
consensus/types/src/beacon_state.rs
View File

@@ -510,7 +510,13 @@ impl<T: EthSpec> BeaconState<T> {
///
/// Spec v0.12.1
pub fn get_beacon_proposer_index(&self, slot: Slot, spec: &ChainSpec) -> Result<usize, Error> {
// Proposer indices are only known for the current epoch, due to the dependence on the
// effective balances of validators, which change at every epoch transition.
let epoch = slot.epoch(T::slots_per_epoch());
if epoch != self.current_epoch() {
return Err(Error::SlotOutOfBounds);
}
let seed = self.get_beacon_proposer_seed(slot, spec)?;
let indices = self.get_active_validator_indices(epoch, spec)?;

2
consensus/types/src/beacon_state/tests.rs
View File

@@ -95,7 +95,7 @@ fn test_cache_initialization<'a, T: EthSpec>(
state.build_committee_cache(relative_epoch, spec).unwrap();
// Assert a call to a cache-using function passes.
let _ = state.get_beacon_proposer_index(slot, spec).unwrap();
state.get_beacon_committee(slot, 0).unwrap();
// Drop the cache.
state.drop_committee_cache(relative_epoch);