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Use advanced epoch cache when preparing proposals (#13377)

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This commit is contained in:
Potuz
2023-12-27 09:42:51 -03:00
committed by GitHub
parent d0bf03e863
commit e80db9554d
3 changed files with 72 additions and 3 deletions
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33
beacon-chain/core/helpers/validators.go
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@@ -281,6 +281,39 @@ func cachedProposerIndexAtSlot(slot primitives.Slot, root [32]byte) (primitives.
return proposerIndices[slot%params.BeaconConfig().SlotsPerEpoch], nil
}
// cachedUnsafeProposerIndexAtSlot returns the proposer index at the given slot
// from the unsafe cache computed in the previous epoch
func cachedUnsafeProposerIndexAtSlot(slot primitives.Slot, root [32]byte) (primitives.ValidatorIndex, error) {
proposerIndices, has := proposerIndicesCache.UnsafeProposerIndices(slots.ToEpoch(slot), root)
if !has {
cache.ProposerIndicesCacheMiss.Inc()
return 0, errProposerIndexMiss
}
if len(proposerIndices) != int(params.BeaconConfig().SlotsPerEpoch) {
cache.ProposerIndicesCacheMiss.Inc()
return 0, errProposerIndexMiss
}
return proposerIndices[slot%params.BeaconConfig().SlotsPerEpoch], nil
}
// UnsafeBeaconProposerIndexAtSlot returns the proposer index at the given slot
// if it has been cached one epoch in advance
func UnsafeBeaconProposerIndexAtSlot(state state.ReadOnlyBeaconState, slot primitives.Slot) (primitives.ValidatorIndex, error) {
e := slots.ToEpoch(slot)
if e < 2 {
return 0, errProposerIndexMiss
}
s, err := slots.EpochEnd(e - 2)
if err != nil {
return 0, err
}
r, err := StateRootAtSlot(state, s)
if err != nil {
return 0, err
}
return cachedUnsafeProposerIndexAtSlot(slot, [32]byte(r))
}
// BeaconProposerIndexAtSlot returns proposer index at the given slot from the
// point of view of the given state as head state
func BeaconProposerIndexAtSlot(ctx context.Context, state state.ReadOnlyBeaconState, slot primitives.Slot) (primitives.ValidatorIndex, error) {