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Consensus context with proposer index caching (#3604)

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## Issue Addressed

Closes https://github.com/sigp/lighthouse/issues/2371

## Proposed Changes

Backport some changes from `tree-states` that remove duplicated calculations of the `proposer_index`.

With this change the proposer index should be calculated only once for each block, and then plumbed through to every place it is required.

## Additional Info

In future I hope to add more data to the consensus context that is cached on a per-epoch basis, like the effective balances of validators and the base rewards.

There are some other changes to remove indexing in tests that were also useful for `tree-states` (the `tree-states` types don't implement `Index`).
This commit is contained in:
Michael Sproul
2022-10-15 22:25:54 +00:00
parent e4cbdc1c77
commit 59ec6b71b8
21 changed files with 388 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
consensus/state_processing/src/per_block_processing/signature_sets.rs
View File

@@ -76,6 +76,7 @@ pub fn block_proposal_signature_set<'a, T, F, Payload: ExecPayload<T>>(
get_pubkey: F,
signed_block: &'a SignedBeaconBlock<T, Payload>,
block_root: Option<Hash256>,
verified_proposer_index: Option<u64>,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>>
where
@@ -83,8 +84,12 @@ where
F: Fn(usize) -> Option<Cow<'a, PublicKey>>,
{
let block = signed_block.message();
let proposer_index = state.get_beacon_proposer_index(block.slot(), spec)? as u64;
let proposer_index = if let Some(proposer_index) = verified_proposer_index {
proposer_index
} else {
state.get_beacon_proposer_index(block.slot(), spec)? as u64
};
if proposer_index != block.proposer_index() {
return Err(Error::IncorrectBlockProposer {
block: block.proposer_index(),
@@ -156,13 +161,18 @@ pub fn randao_signature_set<'a, T, F, Payload: ExecPayload<T>>(
state: &'a BeaconState<T>,
get_pubkey: F,
block: BeaconBlockRef<'a, T, Payload>,
verified_proposer_index: Option<u64>,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>>
where
T: EthSpec,
F: Fn(usize) -> Option<Cow<'a, PublicKey>>,
{
let proposer_index = state.get_beacon_proposer_index(block.slot(), spec)?;
let proposer_index = if let Some(proposer_index) = verified_proposer_index {
proposer_index
} else {
state.get_beacon_proposer_index(block.slot(), spec)? as u64
};
let domain = spec.get_domain(
block.slot().epoch(T::slots_per_epoch()),
@@ -178,7 +188,7 @@ where
Ok(SignatureSet::single_pubkey(
block.body().randao_reveal(),
get_pubkey(proposer_index).ok_or(Error::ValidatorUnknown(proposer_index as u64))?,
get_pubkey(proposer_index as usize).ok_or(Error::ValidatorUnknown(proposer_index))?,
message,
))
}