def sample_proposer_slashing_params(sample_block_header_params):
block_header_data = BeaconBlockHeader(**sample_block_header_params)
return {
'proposer_index': 1,
'header_1': block_header_data,
'header_2': block_header_data,
}
def sample_beacon_state_params(config, genesis_slot, genesis_epoch,
sample_fork_params, sample_eth1_data_params,
sample_block_header_params,
sample_crosslink_record_params):
return {
# Versioning
'genesis_time':
0,
'slot':
genesis_slot + 100,
'fork':
Fork(**sample_fork_params),
# History
'latest_block_header':
BeaconBlockHeader(**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(**sample_eth1_data_params),
'eth1_data_votes': (),
'eth1_deposit_index':
0,
# Registry
'validators': (),
'balances': (),
# Shuffling
'start_shard':
1,
'randao_mixes': (ZERO_HASH32, ) * config.EPOCHS_PER_HISTORICAL_VECTOR,
'active_index_roots':
(ZERO_HASH32, ) * config.EPOCHS_PER_HISTORICAL_VECTOR,
# Slashings
'slashed_balances': (0, ) * config.EPOCHS_PER_SLASHED_BALANCES_VECTOR,
# Attestations
'previous_epoch_attestations': (),
'current_epoch_attestations': (),
# Crosslinks
'previous_crosslinks':
((Crosslink(**sample_crosslink_record_params), ) * config.SHARD_COUNT),
'current_crosslinks':
((Crosslink(**sample_crosslink_record_params), ) * config.SHARD_COUNT),
# Justification
'previous_justified_epoch':
0,
'previous_justified_root':
b'\x99' * 32,
'current_justified_epoch':
0,
'current_justified_root':
b'\x55' * 32,
'justification_bitfield':
0,
# Finality
'finalized_epoch':
0,
'finalized_root':
b'\x33' * 32,
}
def sample_proposer_slashing_params(sample_block_header_params):
block_header_data = BeaconBlockHeader(**sample_block_header_params)
return {
"proposer_index": 1,
"header_1": block_header_data,
"header_2": block_header_data,
}
def sample_beacon_state_params(
config,
genesis_slot,
genesis_epoch,
sample_fork_params,
sample_eth1_data_params,
sample_block_header_params,
sample_crosslink_record_params,
):
return {
# Versioning
"genesis_time":
0,
"slot":
genesis_slot + 100,
"fork":
Fork(**sample_fork_params),
# History
"latest_block_header":
BeaconBlockHeader(**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(**sample_eth1_data_params),
"eth1_data_votes": (),
"eth1_deposit_index":
0,
# Registry
"validators": (),
"balances": (),
# Shuffling
"start_shard":
1,
"randao_mixes": (ZERO_HASH32, ) * config.EPOCHS_PER_HISTORICAL_VECTOR,
"active_index_roots":
(ZERO_HASH32, ) * config.EPOCHS_PER_HISTORICAL_VECTOR,
"compact_committees_roots":
(ZERO_HASH32, ) * config.EPOCHS_PER_HISTORICAL_VECTOR,
# Slashings
"slashings": (0, ) * config.EPOCHS_PER_SLASHINGS_VECTOR,
# Attestations
"previous_epoch_attestations": (),
"current_epoch_attestations": (),
# Crosslinks
"previous_crosslinks":
((Crosslink(**sample_crosslink_record_params), ) * config.SHARD_COUNT),
"current_crosslinks":
((Crosslink(**sample_crosslink_record_params), ) * config.SHARD_COUNT),
# Justification
"justification_bits": (False, ) * JUSTIFICATION_BITS_LENGTH,
"previous_justified_checkpoint":
Checkpoint(epoch=0, root=b"\x99" * 32),
"current_justified_checkpoint":
Checkpoint(epoch=0, root=b"\x55" * 32),
# Finality
"finalized_checkpoint":
Checkpoint(epoch=0, root=b"\x33" * 32),
}
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 get_temporary_block_header(block: BeaconBlock) -> BeaconBlockHeader:
"""
Return the block header corresponding to a block with ``state_root`` set to ``ZERO_HASH32``.
"""
return BeaconBlockHeader(
slot=block.slot,
previous_block_root=block.previous_block_root,
state_root=ZERO_HASH32,
block_body_root=block.body.root,
signature=EMPTY_SIGNATURE,
)
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 create_block_header_with_signature(
state: BeaconState,
body_root: Hash32,
privkey: int,
slots_per_epoch: int,
parent_root: Hash32 = SAMPLE_HASH_1,
state_root: Hash32 = SAMPLE_HASH_2) -> BeaconBlockHeader:
block_header = BeaconBlockHeader(
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.copy(signature=block_header_signature)
def create_block_header_with_signature(
state: BeaconState,
block_body_root: Hash32,
privkey: int,
slots_per_epoch: int,
previous_block_root: bytes = b'\x11' * 32,
state_root: bytes = b'\x22' * 32) -> BeaconBlockHeader:
block_header = BeaconBlockHeader(
slot=state.slot,
previous_block_root=previous_block_root,
state_root=state_root,
block_body_root=block_body_root,
)
block_header_signature = sign_transaction(
message_hash=block_header.signed_root,
privkey=privkey,
fork=state.fork,
slot=block_header.slot,
signature_domain=SignatureDomain.DOMAIN_BEACON_BLOCK,
slots_per_epoch=slots_per_epoch,
)
return block_header.copy(signature=block_header_signature)
def sample_beacon_state_params(config, 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 sample_beacon_state_params(genesis_slot,
genesis_epoch,
sample_fork_params,
sample_eth1_data_params,
sample_block_header_params):
return {
'slot': genesis_slot + 100,
'genesis_time': 0,
'fork': Fork(**sample_fork_params),
'validator_registry': (),
'validator_balances': (),
'validator_registry_update_epoch': 0,
'latest_randao_mixes': (),
'previous_shuffling_start_shard': 1,
'current_shuffling_start_shard': 2,
'previous_shuffling_epoch': genesis_epoch,
'current_shuffling_epoch': genesis_epoch,
'previous_shuffling_seed': b'\x77' * 32,
'current_shuffling_seed': b'\x88' * 32,
'previous_epoch_attestations': (),
'current_epoch_attestations': (),
'previous_justified_epoch': 0,
'current_justified_epoch': 0,
'previous_justified_root': b'\x99' * 32,
'current_justified_root': b'\x55' * 32,
'justification_bitfield': 0,
'finalized_epoch': 0,
'finalized_root': b'\x33' * 32,
'latest_crosslinks': (),
'latest_block_roots': (),
'latest_state_roots': (),
'latest_active_index_roots': (),
'latest_slashed_balances': (),
'latest_block_header': BeaconBlockHeader(**sample_block_header_params),
'historical_roots': (),
'latest_eth1_data': Eth1Data(**sample_eth1_data_params),
'eth1_data_votes': (),
'deposit_index': 0,
}
def sample_beacon_state_params(config, genesis_slot, genesis_epoch,
sample_fork_params, sample_eth1_data_params,
sample_block_header_params,
sample_crosslink_record_params):
return {
'slot':
genesis_slot + 100,
'genesis_time':
0,
'fork':
Fork(**sample_fork_params),
'validator_registry': (),
'validator_balances': (),
'validator_registry_update_epoch':
0,
'latest_randao_mixes':
(ZERO_HASH32, ) * config.LATEST_RANDAO_MIXES_LENGTH,
'previous_shuffling_start_shard':
1,
'current_shuffling_start_shard':
2,
'previous_shuffling_epoch':
genesis_epoch,
'current_shuffling_epoch':
genesis_epoch,
'previous_shuffling_seed':
b'\x77' * 32,
'current_shuffling_seed':
b'\x88' * 32,
'previous_epoch_attestations': (),
'current_epoch_attestations': (),
'previous_justified_epoch':
0,
'current_justified_epoch':
0,
'previous_justified_root':
b'\x99' * 32,
'current_justified_root':
b'\x55' * 32,
'justification_bitfield':
0,
'finalized_epoch':
0,
'finalized_root':
b'\x33' * 32,
'latest_crosslinks':
((Crosslink(**sample_crosslink_record_params), ) * config.SHARD_COUNT),
'latest_block_roots':
(ZERO_HASH32, ) * config.SLOTS_PER_HISTORICAL_ROOT,
'latest_state_roots':
(ZERO_HASH32, ) * config.SLOTS_PER_HISTORICAL_ROOT,
'latest_active_index_roots':
(ZERO_HASH32, ) * config.LATEST_ACTIVE_INDEX_ROOTS_LENGTH,
'latest_slashed_balances': (0, ) * config.LATEST_SLASHED_EXIT_LENGTH,
'latest_block_header':
BeaconBlockHeader(**sample_block_header_params),
'historical_roots': (),
'latest_eth1_data':
Eth1Data(**sample_eth1_data_params),
'eth1_data_votes': (),
'deposit_index':
0,
}
