Examples with SszVector tech.pegasys.teku.infrastructure.ssz.SszVector used on opensource projects

Example 1 with SszVector

use of tech.pegasys.teku.infrastructure.ssz.SszVector in project teku by ConsenSys.

the class SyncCommitteeUtil method getSyncSubcommittees.

public Map<UInt64, SyncSubcommitteeAssignments> getSyncSubcommittees(final BeaconState state, final UInt64 epoch) {
    final UInt64 syncCommitteePeriod = computeSyncCommitteePeriod(epoch);
    final UInt64 currentEpoch = beaconStateAccessors.getCurrentEpoch(state);
    final UInt64 currentSyncCommitteePeriod = computeSyncCommitteePeriod(currentEpoch);
    checkArgument(isStateUsableForCommitteeCalculationAtEpoch(state, epoch), "State must be in the same or previous sync committee period. Cannot calculate epoch %s from state at slot %s", epoch, state.getSlot());
    final BeaconStateAltair altairState = BeaconStateAltair.required(state);
    return BeaconStateCache.getTransitionCaches(altairState).getSyncCommitteeCache().get(syncCommitteePeriod, period -> {
        final SyncCommittee syncCommittee;
        if (syncCommitteePeriod.equals(currentSyncCommitteePeriod)) {
            syncCommittee = altairState.getCurrentSyncCommittee();
        } else {
            syncCommittee = altairState.getNextSyncCommittee();
        }
        final int subcommitteeSize = getSubcommitteeSize();
        final SszVector<SszPublicKey> pubkeys = syncCommittee.getPubkeys();
        final Map<UInt64, SyncSubcommitteeAssignments.Builder> subcommitteeAssignments = new HashMap<>();
        for (int index = 0; index < pubkeys.size(); index++) {
            final BLSPublicKey pubkey = pubkeys.get(index).getBLSPublicKey();
            final UInt64 validatorIndex = UInt64.valueOf(validatorsUtil.getValidatorIndex(altairState, pubkey).orElseThrow(() -> new IllegalStateException("Unknown validator assigned to sync committee: " + pubkey)));
            final int subcommitteeIndex = index / subcommitteeSize;
            final int subcommitteeParticipationIndex = index - (subcommitteeIndex * subcommitteeSize);
            // Note we're using plain HashMap here instead of a concurrent alternative as they
            // are created once here and then never modified so safe to access from multiple
            // threads.
            subcommitteeAssignments.computeIfAbsent(validatorIndex, __ -> SyncSubcommitteeAssignments.builder()).addAssignment(subcommitteeIndex, subcommitteeParticipationIndex).addCommitteeIndex(index);
        }
        return subcommitteeAssignments.entrySet().stream().collect(toUnmodifiableMap(Map.Entry::getKey, entry -> entry.getValue().build()));
    });
}