def from_payload(cls, payload: dict, *args, **kwargs) -> 'LocalFileBasedNodeStorage':
storage_type = payload[cls._TYPE_LABEL]
if not storage_type == cls._name:
raise cls.NodeStorageError("Wrong storage type. got {}".format(storage_type))
del payload['storage_type']
payload = cast_paths_from(cls, payload)
return cls(*args, **payload, **kwargs)
def deserialize(cls,
payload: str,
deserializer=json.loads,
payload_label: Optional[str] = None) -> dict:
"""Returns the JSON deserialized content of `payload`"""
deserialized_payload = deserializer(payload)
version = deserialized_payload.pop('version', UNKNOWN_VERSION)
if version != cls.VERSION:
label = f"'{payload_label}' " if payload_label else ""
raise cls.OldVersion(
f"Configuration {label} is the wrong version "
f"Expected version {cls.VERSION}; Got version {version}")
deserialized_payload = cast_paths_from(cls, deserialized_payload)
return deserialized_payload
def assemble(cls, filepath: Optional[Path] = None, **overrides) -> dict:
"""
Warning: This method allows mutation and may result in an inconsistent configuration.
"""
payload = cls._read_configuration_file(filepath=filepath)
node_storage = cls.load_node_storage(
storage_payload=payload['node_storage'],
federated_only=payload['federated_only'])
max_gas_price = payload.get('max_gas_price') # gwei
if max_gas_price:
max_gas_price = Decimal(max_gas_price)
# Assemble
payload.update(
dict(node_storage=node_storage, max_gas_price=max_gas_price))
payload = cast_paths_from(cls, payload)
# Filter out None values from **overrides to detect, well, overrides...
# Acts as a shim for optional CLI flags.
overrides = {k: v for k, v in overrides.items() if v is not None}
payload = {**payload, **overrides}
return payload