def create_signed_attestation_at_slot(state: BeaconState, config: Eth2Config,
state_machine: BaseBeaconStateMachine,
attestation_slot: Slot,
beacon_block_root: Hash32,
validator_privkeys: Dict[ValidatorIndex,
int],
committee: Tuple[ValidatorIndex, ...],
shard: Shard) -> Attestation:
"""
Create the attestations of the given ``attestation_slot`` slot with ``validator_privkeys``.
"""
state_transition = state_machine.state_transition
state = state_transition.apply_state_transition(
state,
future_slot=attestation_slot,
)
target_epoch = compute_epoch_of_slot(
attestation_slot,
config.SLOTS_PER_EPOCH,
)
target_root = _get_target_root(state, config, beacon_block_root)
parent_crosslink = state.current_crosslinks[shard]
attestation_data = AttestationData(
beacon_block_root=beacon_block_root,
source=Checkpoint(
epoch=state.current_justified_checkpoint.epoch,
root=state.current_justified_checkpoint.root,
),
target=Checkpoint(
root=target_root,
epoch=target_epoch,
),
crosslink=Crosslink(
shard=shard,
parent_root=parent_crosslink.hash_tree_root,
start_epoch=parent_crosslink.end_epoch,
end_epoch=target_epoch,
))
return _create_mock_signed_attestation(
state,
attestation_data,
attestation_slot,
committee,
len(committee),
keymapper(lambda index: state.validators[index].pubkey,
validator_privkeys),
config.SLOTS_PER_EPOCH,
)
def create_signed_attestation_at_slot(
state: BeaconState,
config: Eth2Config,
state_machine: BaseBeaconStateMachine,
attestation_slot: Slot,
beacon_block_root: SigningRoot,
validator_privkeys: Dict[ValidatorIndex, int],
committee: Tuple[ValidatorIndex, ...],
committee_index: CommitteeIndex,
attesting_indices: Sequence[CommitteeValidatorIndex],
) -> Attestation:
"""
Create the attestations of the given ``attestation_slot`` slot with ``validator_privkeys``.
"""
state_transition = state_machine.state_transition
state = state_transition.apply_state_transition(
state, future_slot=attestation_slot)
target_epoch = compute_epoch_at_slot(attestation_slot,
config.SLOTS_PER_EPOCH)
target_root = _get_target_root(state, config, beacon_block_root)
attestation_data = AttestationData(
slot=attestation_slot,
index=committee_index,
beacon_block_root=beacon_block_root,
source=Checkpoint(
epoch=state.current_justified_checkpoint.epoch,
root=state.current_justified_checkpoint.root,
),
target=Checkpoint(root=target_root, epoch=target_epoch),
)
return _create_mock_signed_attestation(
state,
attestation_data,
attestation_slot,
committee,
len(committee),
keymapper(lambda index: state.validators[index].pubkey,
validator_privkeys),
config.SLOTS_PER_EPOCH,
is_for_simulation=False,
attesting_indices=attesting_indices,
)
def create_signed_attestation_at_slot(
state: BeaconState,
config: Eth2Config,
state_machine: BaseBeaconStateMachine,
attestation_slot: Slot,
beacon_block_root: Root,
validator_privkeys: Dict[ValidatorIndex, int],
committee: Tuple[ValidatorIndex, ...],
committee_index: CommitteeIndex,
attesting_indices: Sequence[CommitteeValidatorIndex],
) -> Attestation:
"""
Create the aggregated attestation of the given ``attestation_slot`` slot
of the given committee.
"""
state_transition = state_machine.state_transition
state = state_transition.apply_state_transition(
state, future_slot=attestation_slot)
attestation_data = create_atteatsion_data(
state,
config,
state_machine,
attestation_slot,
beacon_block_root,
committee_index,
)
return _create_mock_signed_attestation(
state,
attestation_data,
attestation_slot,
committee,
len(committee),
keymapper(lambda index: state.validators[index].pubkey,
validator_privkeys),
config.SLOTS_PER_EPOCH,
is_for_simulation=False,
attesting_indices=attesting_indices,
)