def construct_erc20_tx(self,addressFrom,addressTo,value,gasPrice=None):
'''
构造eth未签名交易
'''
contract_instance=self.get_contract_instance(CONTRACT_ADDRESS, CONTRACT_ABI)
tx_dict = contract_instance.functions.transfer(
checksum_encode(addressTo),
int(value*(10**8))
).buildTransaction({
'from': addressFrom,
'nonce': self.web3.eth.getTransactionCount(addressFrom),
})
tx = Transaction(
nonce=tx_dict.get("nonce"),
gasprice=tx_dict.get("gasPrice") if not gasPrice else gasPrice,
startgas=tx_dict.get("gas"),
to=tx_dict.get("to"),
value=tx_dict.get("value"),
data=binascii.unhexlify(tx_dict.get("data")[2:]))
UnsignedTransaction = Transaction.exclude(['v', 'r', 's'])
unsigned_tx = rlp.encode(tx, UnsignedTransaction)
before_hash = utils.sha3(unsigned_tx)
return binascii.hexlify(unsigned_tx).decode(),binascii.hexlify(before_hash).decode()
def invoke_contract(self,
invoker,
contract,
method,
args,
gasLimit=800000):
tx_dict = contract.functions[method](*args).buildTransaction({
"gas":
gasLimit,
'gasPrice':
self.web3.eth.gasPrice,
'nonce':
self.web3.eth.getTransactionCount(checksum_encode(invoker)),
})
tx = Transaction(nonce=tx_dict.get("nonce"),
gasprice=tx_dict.get("gasPrice"),
startgas=tx_dict.get("gas"),
to=tx_dict.get("to"),
value=tx_dict.get("value"),
data=binascii.unhexlify(tx_dict.get("data")[2:]))
UnsignedTransaction = Transaction.exclude(['v', 'r', 's'])
unsigned_tx = rlp.encode(tx, UnsignedTransaction)
return binascii.hexlify(unsigned_tx).decode()
def write_contract(self, invoker, contractAddress, method, args,gasPrice=None):
'''
调用合约里实现的方法
'''
invoker = checksum_encode(invoker)
contractAddress = checksum_encode(contractAddress)
contract_instance = self.get_contract_instance(contractAddress)
if not contract_instance:
return None
tx_dict = contract_instance.functions[method](*args).buildTransaction({
'gasPrice': self.web3.eth.gasPrice if not gasPrice else gasPrice,
'from':invoker,
'nonce': self.web3.eth.getTransactionCount(invoker),
})
tx = Transaction(
nonce=tx_dict.get("nonce"),
gasprice=tx_dict.get("gasPrice"),
startgas=tx_dict.get("gas"),
to=tx_dict.get("to"),
value=tx_dict.get("value"),
data=binascii.unhexlify(tx_dict.get("data")[2:]))
UnsignedTransaction = Transaction.exclude(['v', 'r', 's'])
unsigned_tx = rlp.encode(tx, UnsignedTransaction)
return binascii.hexlify(unsigned_tx).decode()
def get_tx_rawhash(tx, network_id=None):
"""Get a tx's rawhash.
Copied from ethereum.transactions.Transaction.sign
"""
if network_id is None:
rawhash = utils.sha3(
rlp.encode(tx, Transaction.exclude(['v', 'r', 's'])))
else:
assert 1 <= network_id < 2**63 - 18
rlpdata = rlp.encode(
rlp.infer_sedes(tx).serialize(tx)[:-3] + [network_id, b'', b''])
rawhash = utils.sha3(rlpdata)
return rawhash
def construct_eth_tx(self, addressFrom, addressTo, value, gasPrice=None):
'''
构造eth未签名交易
'''
tx = Transaction(
nonce=self.web3.eth.getTransactionCount(addressFrom),
gasprice=self.web3.eth.gasPrice if not gasPrice else gasPrice,
startgas=21000,
to=addressTo,
value=int(value),
data=b'')
UnsignedTransaction = Transaction.exclude(['v', 'r', 's'])
unsigned_tx = rlp.encode(tx, UnsignedTransaction)
before_hash = utils.sha3(unsigned_tx)
return binascii.hexlify(unsigned_tx).decode()
def invoke_contract(self, invoker, contract, method, args,gasPrice=None):
'''
调用合约里实现的方法
'''
tx_dict = contract.functions[method](*args).buildTransaction({
'gasPrice': self.web3.eth.gasPrice if not gasPrice else gasPrice,
'nonce': self.web3.eth.getTransactionCount(invoker),
})
tx = Transaction(
nonce=tx_dict.get("nonce"),
gasprice=tx_dict.get("gasPrice"),
startgas=tx_dict.get("gas"),
to=tx_dict.get("to"),
value=tx_dict.get("value"),
data=binascii.unhexlify(tx_dict.get("data")[2:]))
UnsignedTransaction = Transaction.exclude(['v', 'r', 's'])
unsigned_tx = rlp.encode(tx, UnsignedTransaction)
return binascii.hexlify(unsigned_tx).decode()
