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Extend block reward APIs (#3290)

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## Proposed Changes

Add a new HTTP endpoint `POST /lighthouse/analysis/block_rewards` which takes a vec of `BeaconBlock`s as input and outputs the `BlockReward`s for them.

Augment the `BlockReward` struct with the attestation data for attestations in the block, which simplifies access to this information from blockprint. Using attestation data I've been able to make blockprint up to 95% accurate across Prysm/Lighthouse/Teku/Nimbus. I hope to go even higher using a bunch of synthetic blocks produced for Prysm/Nimbus/Lodestar, which are underrepresented in the current training data.
This commit is contained in:
Michael Sproul
2022-06-29 04:50:37 +00:00
parent 36453929d5
commit 53b2b500db
7 changed files with 136 additions and 11 deletions
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19
beacon_node/beacon_chain/src/block_reward.rs
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@@ -2,7 +2,7 @@ use crate::{BeaconChain, BeaconChainError, BeaconChainTypes};
use eth2::lighthouse::{AttestationRewards, BlockReward, BlockRewardMeta};
use operation_pool::{AttMaxCover, MaxCover};
use state_processing::per_block_processing::altair::sync_committee::compute_sync_aggregate_rewards;
use types::{BeaconBlockRef, BeaconState, EthSpec, ExecPayload, Hash256, RelativeEpoch};
use types::{BeaconBlockRef, BeaconState, EthSpec, ExecPayload, Hash256};
impl<T: BeaconChainTypes> BeaconChain<T> {
pub fn compute_block_reward<Payload: ExecPayload<T::EthSpec>>(
@@ -10,13 +10,13 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
block: BeaconBlockRef<'_, T::EthSpec, Payload>,
block_root: Hash256,
state: &BeaconState<T::EthSpec>,
include_attestations: bool,
) -> Result<BlockReward, BeaconChainError> {
if block.slot() != state.slot() {
return Err(BeaconChainError::BlockRewardSlotError);
}
let active_indices = state.get_cached_active_validator_indices(RelativeEpoch::Current)?;
let total_active_balance = state.get_total_balance(active_indices, &self.spec)?;
let total_active_balance = state.get_total_active_balance()?;
let mut per_attestation_rewards = block
.body()
.attestations()
@@ -60,11 +60,24 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
.map(|cover| cover.fresh_validators_rewards)
.collect();
// Add the attestation data if desired.
let attestations = if include_attestations {
block
.body()
.attestations()
.iter()
.map(|a| a.data.clone())
.collect()
} else {
vec![]
};
let attestation_rewards = AttestationRewards {
total: attestation_total,
prev_epoch_total,
curr_epoch_total,
per_attestation_rewards,
attestations,
};
// Sync committee rewards.