def get_keeper_params(oracles_contract: Contract,
multicall_contract: Contract) -> Parameters:
"""Returns keeper params for checking whether to submit the votes."""
calls = [
{
"target": oracles_contract.address,
"callData": oracles_contract.encodeABI(fn_name="paused"),
},
{
"target": oracles_contract.address,
"callData":
oracles_contract.encodeABI(fn_name="currentRewardsNonce"),
},
{
"target":
oracles_contract.address,
"callData":
oracles_contract.encodeABI(fn_name="currentValidatorsNonce"),
},
{
"target":
oracles_contract.address,
"callData":
oracles_contract.encodeABI(fn_name="getRoleMemberCount",
args=[ORACLE_ROLE]),
},
]
response = multicall_contract.functions.aggregate(calls).call()[1]
paused = bool(Web3.toInt(primitive=response[0]))
rewards_nonce = Web3.toInt(primitive=response[1])
validators_nonce = Web3.toInt(primitive=response[2])
total_oracles = Web3.toInt(primitive=response[3])
calls = []
for i in range(total_oracles):
calls.append({
"target":
oracles_contract.address,
"callData":
oracles_contract.encodeABI(fn_name="getRoleMember",
args=[ORACLE_ROLE, i]),
})
response = multicall_contract.functions.aggregate(calls).call()[1]
oracles: List[ChecksumAddress] = []
for addr in response:
oracles.append(Web3.toChecksumAddress(Web3.toBytes(Web3.toInt(addr))))
return Parameters(
paused=paused,
rewards_nonce=rewards_nonce,
validators_nonce=validators_nonce,
oracles=oracles,
)
def get_constructor_arguments(contract: Contract,
args: Optional[list] = None,
kwargs: Optional[dict] = None):
"""Get constructor arguments for Etherscan verify.
https://etherscanio.freshdesk.com/support/solutions/articles/16000053599-contract-verification-constructor-arguments
"""
# return contract._encode_constructor_data(args=args, kwargs=kwargs)
constructor_abi = get_constructor_abi(contract.abi)
# constructor_abi can be none in case of libraries
if constructor_abi is None:
return to_hex(contract.bytecode)
if args is not None:
return contract.encodeABI(constructor_abi['name'], args)[2:] # No 0x
else:
constructor_abi = get_constructor_abi(contract.abi)
kwargs = kwargs or {}
arguments = merge_args_and_kwargs(constructor_abi, [], kwargs)
# deploy_data = add_0x_prefix(
# contract._encode_abi(constructor_abi, arguments)
# )
# TODO: Looks like recent Web3.py ABI change
deploy_data = encode_abi(contract.web3, constructor_abi, arguments)
return deploy_data
def execute(self,
to_contract: Contract,
func: str,
args=None,
amount_in_eth: Optional[Decimal] = None,
max_gas=300000):
"""Calls a smart contract from the hosted wallet.
Creates a transaction that is proxyed through hosted wallet execute method. We need to have ABI as Populus Contract instance.
:param wallet_address: Wallet address
:param contract: Contract to called as address bound Populus Contract class
:param func: Method name to be called
:param args: Arguments passed to the method
:param value: Additional value carried in the call in ETH
:param gas: The max amount of gas the coinbase account is allowed to pay for this transaction.
:return: txid of the execution as hex string
"""
assert isinstance(to_contract, Contract)
if amount_in_eth:
assert isinstance(amount_in_eth,
Decimal) # Don't let floats slip through
value = to_wei(amount_in_eth)
else:
value = 0
# Encode function arguments
# function_abi = to_contract._find_matching_fn_abi(func, args)
# 4 byte function hash
# function_selector = function_abi_to_4byte_selector(function_abi)
# data payload passed to the function
arg_data = to_contract.encodeABI(func, args=args)
call_data = arg_data # Latest web3 behavior, no manual function selector needed
# test_event_execute() call data should look like
# function selector + random int as 256-bit
# 0x5093dc7d000000000000000000000000000000000000000000000000000000002a3f58fe
# web3 takes bytes argument as actual bytes, not hex
call_data = binascii.unhexlify(call_data[2:])
tx_info = {
# The Ethereum account that pays the gas for this operation
"from": self.contract.web3.eth.coinbase,
"gas": max_gas,
}
txid = self.contract.transact(tx_info).execute(to_contract.address,
value, max_gas,
call_data)
return txid
def execute(
self, to_contract: Contract, func: str, args=None, amount_in_eth: Optional[Decimal] = None, max_gas=100000
):
"""Calls a smart contract from the hosted wallet.
Creates a transaction that is proxyed through hosted wallet execute method. We need to have ABI as Populus Contract instance.
:param wallet_address: Wallet address
:param contract: Contract to called as address bound Populus Contract class
:param func: Method name to be called
:param args: Arguments passed to the method
:param value: Additional value carried in the call in ETH
:param gas: The max amount of gas the coinbase account is allowed to pay for this transaction.
:return: txid of the execution as hex string
"""
assert isinstance(to_contract, Contract)
if amount_in_eth:
assert isinstance(amount_in_eth, Decimal) # Don't let floats slip through
value = to_wei(amount_in_eth)
else:
value = 0
# Encode function arguments
function_abi = to_contract._find_matching_fn_abi(func, args)
# 4 byte function hash
function_selector = function_abi_to_4byte_selector(function_abi)
# data payload passed to the function
arg_data = to_contract.encodeABI(func, args=args)
call_data = function_selector + arg_data[2:]
# test_event_execute() call data should look like
# function selector + random int as 256-bit
# 0x5093dc7d000000000000000000000000000000000000000000000000000000002a3f58fe
# web3 takes bytes argument as actual bytes, not hex
call_data = binascii.unhexlify(call_data[2:])
tx_info = {
# The Ethereum account that pays the gas for this operation
"from": self.contract.web3.eth.coinbase,
"gas": max_gas,
}
txid = self.contract.transact(tx_info).execute(to_contract.address, value, max_gas, call_data)
return txid
