def sample_proposer_slashing_params(sample_block_header_params,
sample_signature):
block_header_data = BeaconBlockHeader.create(**sample_block_header_params)
signed_block_header = SignedBeaconBlockHeader.create(
message=block_header_data, signature=sample_signature)
return {
"signed_header_1": signed_block_header,
"signed_header_2": signed_block_header,
}
def genesis_state(eth2_config, genesis_time, genesis_validators):
balances = tuple(validator.effective_balance for validator in genesis_validators)
state = BeaconState.create(
latest_block_header=BeaconBlockHeader.create(
body_root=BeaconBlockBody.create().hash_tree_root
),
validators=genesis_validators,
balances=balances,
config=eth2_config,
)
state.genesis_time = genesis_time
return state
def sample_beacon_state_params(
config,
genesis_slot,
genesis_epoch,
sample_fork_params,
sample_eth1_data_params,
sample_block_header_params,
):
return {
# Versioning
"genesis_time":
0,
"slot":
genesis_slot + 100,
"fork":
Fork.create(**sample_fork_params),
# History
"latest_block_header":
BeaconBlockHeader.create(**sample_block_header_params),
"block_roots": (ZERO_HASH32, ) * config.SLOTS_PER_HISTORICAL_ROOT,
"state_roots": (ZERO_HASH32, ) * config.SLOTS_PER_HISTORICAL_ROOT,
"historical_roots": (),
# Eth1
"eth1_data":
Eth1Data.create(**sample_eth1_data_params),
"eth1_data_votes": (),
"eth1_deposit_index":
0,
# Registry
"validators": (),
"balances": (),
# Shuffling
"randao_mixes": (ZERO_HASH32, ) * config.EPOCHS_PER_HISTORICAL_VECTOR,
# Slashings
"slashings": (0, ) * config.EPOCHS_PER_SLASHINGS_VECTOR,
# Attestations
"previous_epoch_attestations": (),
"current_epoch_attestations": (),
# Justification
"justification_bits": (False, ) * JUSTIFICATION_BITS_LENGTH,
"previous_justified_checkpoint":
Checkpoint.create(epoch=0, root=b"\x99" * 32),
"current_justified_checkpoint":
Checkpoint.create(epoch=0, root=b"\x55" * 32),
# Finality
"finalized_checkpoint":
Checkpoint.create(epoch=0, root=b"\x33" * 32),
}
def create_block_header_with_signature(
state: BeaconState,
body_root: Hash32,
privkey: int,
slots_per_epoch: int,
parent_root: SigningRoot = SAMPLE_HASH_1,
state_root: Hash32 = SAMPLE_HASH_2,
) -> BeaconBlockHeader:
block_header = BeaconBlockHeader.create(
slot=state.slot,
parent_root=parent_root,
state_root=state_root,
body_root=body_root,
)
block_header_signature = sign_transaction(
message_hash=block_header.signing_root,
privkey=privkey,
state=state,
slot=block_header.slot,
signature_domain=SignatureDomain.DOMAIN_BEACON_PROPOSER,
slots_per_epoch=slots_per_epoch,
)
return block_header.set("signature", block_header_signature)
