def from_json(json_str: str) -> MixerDescription:
json_dict = json.loads(json_str)
mixer = InstanceDescription.from_json_dict(json_dict["mixer"])
token_dict = json_dict.get("token", None)
token = InstanceDescription.from_json_dict(token_dict) \
if token_dict else None
return MixerDescription(mixer, token)
def from_json_dict(json_dict: Dict[str, Any]) -> MixerDescription:
zeth_mixer = json_dict["zeth_mixer"]
mixer = InstanceDescription.from_json_dict(json_dict)
token_dict = cast(Optional[Dict[str, Any]],
zeth_mixer.get("token", None))
token = InstanceDescription.from_json_dict(token_dict) \
if token_dict else None
permitted_dispatcher = \
cast(Optional[str], zeth_mixer.get("permitted_dispatcher", None))
vk_hash = cast(Optional[str], zeth_mixer.get("vk_hash", None))
return MixerDescription(mixer, token, permitted_dispatcher, vk_hash)
def deploy(ctx: Context, verification_key_hash: str,
dispatcher_instance_file: str, instance_file: str) -> None:
"""
Deploy the contract for a dummy application.
"""
eth_network = ctx.obj["eth_network"]
# Load the dispatcher instance
with open(dispatcher_instance_file, "r") as dispatcher_instance_f:
dispatcher_desc = InstanceDescription.from_json_dict(
json.load(dispatcher_instance_f))
# Verification key hash as an array of evm words.
verification_key_hash_evm = list(
hex_to_uint256_list(verification_key_hash))
print(f"verification_key_hash_evm = {verification_key_hash_evm}")
web3 = open_web3_from_network(eth_network)
eth_address = load_eth_address(ctx.obj["eth_addr"])
eth_private_key_data = load_eth_private_key(ctx.obj["eth_private_key"])
instance_desc = InstanceDescription.deploy(
web3, DUMMY_APP_CONTRACT_FILE, "DummyApplication", eth_address,
eth_private_key_data, DUMMY_APP_CONTRACT_DEPLOY_GAS,
{"allow_paths": CONTRACTS_DIR},
[dispatcher_desc.address, verification_key_hash_evm])
with open(instance_file, "w") as instance_file_f:
json.dump(instance_desc.to_json_dict(), instance_file_f)
print(f"Instance file written to '{instance_file}'")
def get_dispatcher_contract(self) -> Any:
"""
Load (and cache) the dispatcher contract instance.
"""
if not self._dispatcher_contract:
with open(self.instance_file, "r") as instance_f:
instance_dict = json.load(instance_f)
instance = InstanceDescription.from_json_dict(instance_dict)
self._dispatcher_contract = DispatcherContract(
self.get_web3(), instance, self.get_wrapper_snark())
return self._dispatcher_contract
def load_contract_address(contract_addr: str) -> str:
"""
Parse a string as either an eth address, or a contract instance file.
"""
if contract_addr.startswith("0x"):
return Web3.toChecksumAddress(contract_addr)
if exists(contract_addr):
with open(contract_addr, "r") as instance_f:
instance = InstanceDescription.from_json_dict(
json.load(instance_f))
return Web3.toChecksumAddress(instance.address)
raise ClickException(
f"failed to parse as address or instance file: {contract_addr}")
def submit_batch(
ctx: Context,
batch_file: str,
application_instance_file: str,
wait: bool) -> None:
"""
Submit an aggregated transaction ("batch") to a zecale dispatcher contract
instance.
"""
cmd_ctx: CommandContext = ctx.obj
aggregator_config = cmd_ctx.get_aggregator_configuration()
wrapper_snark = aggregator_config.wrapper_snark
pp = aggregator_config.wrapper_pairing_parameters
# Load the batch
aggregated_tx = load_aggregated_transaction(wrapper_snark, batch_file)
# Load the application instance address
with open(application_instance_file, "r") as app_instance_f:
app_instance = InstanceDescription.from_json_dict(
json.load(app_instance_f))
# Open the dispatcher client and submit the batch to it
eth_addr, eth_private_key = cmd_ctx.get_eth_key_and_address()
dispatcher_contract = cmd_ctx.get_dispatcher_contract()
tx_id = dispatcher_contract.process_batch(
pp, aggregated_tx, app_instance.address, eth_addr, eth_private_key)
print(tx_id.hex())
if wait:
tx_receipt = cmd_ctx.get_web3().eth.waitForTransactionReceipt(
tx_id, 10000)
gas_used = tx_receipt.gasUsed
status = tx_receipt.status
print(f"(gasUsed={gas_used}, status={status})")
if status != 1:
raise ClickException("transaction failed")
# This is kept for convenience during contract development. Can be
# removed once the contract code is stable.
dispatcher_contract.dump_logs(tx_receipt)
def get(ctx: Context, scalar: int, instance_file: str,
check: Optional[int]) -> None:
"""
Query the deployed contract to find the value stored for a given scalar.
(These values are the parameters submitted along side the proof for the
given scalar.)
"""
eth_network = ctx.obj["eth_network"]
# Load the contract instance
with open(instance_file, "r") as instance_f:
instance_desc = InstanceDescription.from_json_dict(
json.load(instance_f))
# Instantiate
web3 = open_web3_from_network(eth_network)
app_contract = instance_desc.instantiate(web3)
result: int = app_contract.functions.get(scalar).call()
print(f"{scalar}: {result}")
if (check is not None) and (result != check):
raise ClickException("state check failed")