def from_genesis_config(cls, config_profile: str) -> 'BeaconChainConfig':
"""
Construct an instance of ``cls`` reading the genesis configuration
data under the local data directory.
"""
if config_profile == "mainnet":
beacon_chain_class = BeaconChain
else:
beacon_chain_class = SkeletonLakeChain
try:
with open(_get_eth2_genesis_config_file_path(
config_profile)) as config_file:
genesis_config = json.load(config_file)
except FileNotFoundError as e:
raise Exception("unable to load genesis config: %s", e)
eth2_config = Eth2Config.from_formatted_dict(
genesis_config["eth2_config"])
# NOTE: have to ``override_lengths`` before we can parse the ``BeaconState``
override_lengths(eth2_config)
genesis_state = from_formatted_dict(genesis_config["genesis_state"],
BeaconState)
genesis_validator_key_map = load_genesis_key_map(
genesis_config["genesis_validator_key_pairs"])
return cls(genesis_state,
eth2_config,
genesis_validator_key_map,
beacon_chain_class=beacon_chain_class)
def main_validator() -> None:
logger = _setup_logging()
parser = parse_cli_args()
arguments = parser.parse_args()
trinity_config = load_trinity_config_from_parser_args(
parser, arguments, APP_IDENTIFIER_VALIDATOR_CLIENT, (ValidatorClientAppConfig,)
)
# NOTE: we do not want the rest of the functionality in
# ``trinity.bootstrap.ensure_data_dir_is_initialized
create_dir_if_missing(trinity_config.data_dir)
validator_client_app_config = trinity_config.get_app_config(
ValidatorClientAppConfig
)
root_dir = validator_client_app_config.root_dir
create_dir_if_missing(root_dir)
try:
genesis_config = _load_genesis_config_at(
validator_client_app_config.genesis_config_path
)
except FileNotFoundError:
genesis_time = Timestamp(int(time.time()))
genesis_config = generate_genesis_config("minimal", genesis_time)
eth2_config = Eth2Config.from_formatted_dict(genesis_config["eth2_config"])
override_lengths(eth2_config)
key_pairs = load_genesis_key_map(genesis_config["genesis_validator_key_pairs"])
genesis_state = from_formatted_dict(genesis_config["genesis_state"], BeaconState)
slots_per_epoch = Slot(eth2_config.SLOTS_PER_EPOCH)
seconds_per_slot = eth2_config.SECONDS_PER_SLOT
genesis_time = genesis_state.genesis_time
config = Config(
key_pairs=key_pairs,
root_data_dir=root_dir,
slots_per_epoch=slots_per_epoch,
seconds_per_slot=seconds_per_slot,
genesis_time=genesis_time,
)
# NOTE: we deviate from the multiprocess-driven Component-based
# application machinery here until said machinery is more stable
# with respect to boot, shutdown and general concurrent control.
trio.run(arguments.func, logger, config, arguments)
def from_genesis_config(cls) -> 'BeaconChainConfig':
"""
Construct an instance of ``cls`` reading the genesis configuration
data under the local data directory.
"""
try:
with open(_get_eth2_genesis_config_file_path()) as config_file:
genesis_config = json.load(config_file)
except FileNotFoundError:
genesis_config = generate_genesis_config("minimal")
eth2_config = Eth2Config.from_formatted_dict(genesis_config["eth2_config"])
# NOTE: have to ``override_lengths`` before we can parse the ``BeaconState``
override_lengths(eth2_config)
genesis_state = from_formatted_dict(genesis_config["genesis_state"], BeaconState)
genesis_validator_key_map = load_genesis_key_map(
genesis_config["genesis_validator_key_pairs"]
)
return cls(genesis_state, eth2_config, genesis_validator_key_map)
