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[Altair] Sync committee pools (#2321)

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Add pools supporting sync committees:
- naive sync aggregation pool
- observed sync contributions pool
- observed sync contributors pool
- observed sync aggregators pool

Add SSZ types and tests related to sync committee signatures.

Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: realbigsean <seananderson33@gmail.com>
This commit is contained in:
realbigsean
2021-07-15 00:52:02 +00:00
parent 8fa6e463ca
commit a3a7f39b0d
59 changed files with 5277 additions and 933 deletions
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13
consensus/state_processing/src/upgrade/altair.rs
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@@ -1,5 +1,6 @@
use crate::common::{get_attestation_participation_flag_indices, get_attesting_indices};
use std::mem;
use std::sync::Arc;
use types::{
BeaconState, BeaconStateAltair, BeaconStateError as Error, ChainSpec, EthSpec, Fork,
ParticipationFlags, PendingAttestation, RelativeEpoch, SyncCommittee, VariableList,
@@ -52,6 +53,8 @@ pub fn upgrade_to_altair<E: EthSpec>(
VariableList::new(vec![ParticipationFlags::default(); pre.validators.len()])?;
let inactivity_scores = VariableList::new(vec![0; pre.validators.len()])?;
let temp_sync_committee = Arc::new(SyncCommittee::temporary()?);
// Where possible, use something like `mem::take` to move fields from behind the &mut
// reference. For other fields that don't have a good default value, use `clone`.
//
@@ -94,8 +97,8 @@ pub fn upgrade_to_altair<E: EthSpec>(
// Inactivity
inactivity_scores,
// Sync committees
current_sync_committee: SyncCommittee::temporary()?, // not read
next_sync_committee: SyncCommittee::temporary()?, // not read
current_sync_committee: temp_sync_committee.clone(), // not read
next_sync_committee: temp_sync_committee, // not read
// Caches
committee_caches: mem::take(&mut pre.committee_caches),
pubkey_cache: mem::take(&mut pre.pubkey_cache),
@@ -109,9 +112,9 @@ pub fn upgrade_to_altair<E: EthSpec>(
// Fill in sync committees
// Note: A duplicate committee is assigned for the current and next committee at the fork
// boundary
let sync_committee = post.get_next_sync_committee(spec)?;
post.as_altair_mut()?.current_sync_committee = sync_committee.clone();
post.as_altair_mut()?.next_sync_committee = sync_committee;
let sync_committee = Arc::new(post.get_next_sync_committee(spec)?);
*post.current_sync_committee_mut()? = sync_committee.clone();
*post.next_sync_committee_mut()? = sync_committee;
*pre_state = post;