def unauthorize_for_peer(self, account: Account, peer_publickeys: [],
pos_lists: [], payer: Account, gas_limit: int,
gas_price: int):
contract_address = bytearray.fromhex(self.CONTRACT_ADDRESS)
if len(peer_publickeys) != len(pos_lists):
raise Exception(
"the length of peer_publickeys should equal the length of pos_lists"
)
param = {
"address": account.get_address().to_bytes(),
"publickeys_length": len(peer_publickeys)
}
for i in range(len(peer_publickeys)):
param["publickey" + str(i)] = peer_publickeys[i]
param["pos_lists_length"] = len(pos_lists)
for i in range(len(pos_lists)):
param["pos_lists" + str(i)] = pos_lists[i]
invoke_code = build_native_invoke_code(contract_address, b'\x00',
"unAuthorizeForPeer", param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
payer.get_address().to_bytes(), invoke_code,
bytearray(), [])
tx.sign_transaction(account)
if payer is not None and account.get_address_base58(
) is not payer.get_address_base58():
tx.add_sign_transaction(payer)
return self.__sdk.get_network().send_raw_transaction(tx)
def withdraw(self, account: Account, peer_publickeys: list,
withdraw_list: list, payer: Account, gas_limit: int,
gas_price: int):
contract_address = bytearray.fromhex(self.CONTRACT_ADDRESS)
if len(peer_publickeys) != len(withdraw_list):
raise Exception(
"the length of peer_publickeys should equal the length of pos_lists"
)
param = {
"address": account.get_address().to_array(),
"publickeys_length": len(peer_publickeys)
}
for i in range(len(peer_publickeys)):
param["publickey" + str(i)] = peer_publickeys[i]
param["pos_lists_length"] = len(withdraw_list)
for i in range(len(withdraw_list)):
param["pos_lists" + str(i)] = withdraw_list[i]
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"withdraw", param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
payer.get_address().to_array(), invoke_code,
bytearray(), [], bytearray())
self.__sdk.sign_transaction(tx, account)
if payer is not None and account.get_address_base58(
) is not payer.get_address_base58():
self.__sdk.add_sign_transaction(tx, payer)
self.__sdk.rpc.send_raw_transaction(tx)
return tx.hash256_explorer()
def query_allowance(self, asset: str, b58_from_address: str, b58_to_address: str) -> int:
"""
:param asset: a string which is used to indicate which asset's allowance we want to get.
:param b58_from_address: a base58 encode address which indicate where the allowance from.
:param b58_to_address: a base58 encode address which indicate where the allowance to.
:return: the amount of allowance in the from of int.
"""
contract_address = self.get_asset_address(asset)
raw_from = Address.b58decode(b58_from_address).to_bytes()
raw_to = Address.b58decode(b58_to_address).to_bytes()
args = {"from": raw_from, "to": raw_to}
invoke_code = build_native_invoke_code(contract_address, b'\x00', "allowance", args)
unix_time_now = int(time())
version = 0
tx_type = 0xd1
gas_price = 0
gas_limit = 0
attributes = bytearray()
signers = list()
tx = Transaction(version, tx_type, unix_time_now, gas_price, gas_limit, None, invoke_code, attributes, signers)
response = self.__sdk.rpc.send_raw_transaction_pre_exec(tx)
try:
allowance = ContractDataParser.to_int(response['Result'])
return allowance
except SDKException:
return 0
def query_balance(self, asset: str, b58_address: str) -> int:
"""
This interface is used to query the account's ONT or ONG balance.
:param asset: a string which is used to indicate which asset we want to check the balance.
:param b58_address: a base58 encode account address.
:return: account balance.
"""
raw_address = Address.b58decode(b58_address).to_bytes()
contract_address = self.get_asset_address(asset)
invoke_code = build_native_invoke_code(contract_address, b'\x00', "balanceOf", raw_address)
unix_time_now = int(time())
version = 0
tx_type = 0xd1
gas_price = 0
gas_limit = 0
attributes = bytearray()
signers = list()
tx = Transaction(version, tx_type, unix_time_now, gas_price, gas_limit, None, invoke_code, attributes, signers)
response = self.__sdk.rpc.send_raw_transaction_pre_exec(tx)
try:
balance = ContractDataParser.to_int(response['Result'])
return balance
except SDKException:
return 0
def new_withdraw_ong_transaction(self, b58_claimer_address: str, b58_recv_address: str, amount: int,
b58_payer_address: str, gas_limit: int, gas_price: int) -> Transaction:
"""
This interface is used to generate a Transaction object that
allow one account to withdraw an amount of ong and transfer them to receive address.
:param b58_claimer_address: a base58 encode address which is used to indicate who is the claimer.
:param b58_recv_address: a base58 encode address which is used to indicate who receive the claimed ong.
:param amount: the amount of asset that will be claimed.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which can be used for withdraw ong.
"""
if not isinstance(b58_claimer_address, str) or not isinstance(b58_recv_address, str) or not isinstance(
b58_payer_address, str):
raise SDKException(ErrorCode.param_err('the data type of base58 encode address should be the string.'))
if len(b58_claimer_address) != 34 or len(b58_recv_address) != 34 or len(b58_payer_address) != 34:
raise SDKException(ErrorCode.param_err('the length of base58 encode address should be 34 bytes.'))
if amount <= 0:
raise SDKException(ErrorCode.other_error('the amount should be greater than than zero.'))
if gas_price < 0:
raise SDKException(ErrorCode.other_error('the gas price should be equal or greater than zero.'))
if gas_limit < 0:
raise SDKException(ErrorCode.other_error('the gas limit should be equal or greater than zero.'))
ont_contract_address = self.get_asset_address('ont')
ong_contract_address = self.get_asset_address("ong")
args = {"sender": Address.b58decode(b58_claimer_address).to_bytes(), "from": ont_contract_address,
"to": Address.b58decode(b58_recv_address).to_bytes(), "value": amount}
invoke_code = build_native_invoke_code(ong_contract_address, b'\x00', "transferFrom", args)
unix_time_now = int(time())
payer_array = Address.b58decode(b58_payer_address).to_bytes()
return Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit, payer_array, invoke_code, bytearray(), list())
def register_candidate(self, account: Account, peer_pubkey: str,
init_pos: int, identity: Identity, password: str,
key_no: int, payer: Account, gas_limit: int,
gas_price: int):
contract_address = bytearray.fromhex(self.CONTRACT_ADDRESS)
param = {
"peer_pubkey": peer_pubkey,
"address": account.get_address().to_array(),
"init_pos": init_pos,
"ontid": identity.ont_id.encode(),
"key_no": key_no
}
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"registerCandidate", param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
payer.get_address().to_array(), invoke_code,
bytearray(), [], bytearray())
self.__sdk.sign_transaction(tx, account)
ontid_acc = self.__sdk.wallet_manager.get_account(
identity.ont_id, password)
self.__sdk.add_sign_transaction(tx, ontid_acc)
if account.get_address_base58() is not payer:
self.__sdk.add_sign_transaction(tx, payer)
res = self.__sdk.rpc.send_raw_transaction(tx)
return tx.hash256_explorer()
def new_balance_of_tx(self, owner: Union[str,
Address]) -> InvokeTransaction:
owner = Address.b58decode(owner)
invoke_code = build_native_invoke_code(self._invoke_address,
self._version, 'balanceOf',
owner)
return InvokeTransaction(payload=invoke_code)
def new_approve_transaction(self, asset: str, b58_send_address: str, b58_recv_address: str, amount: int,
b58_payer_address: str, gas_limit: int, gas_price: int) -> Transaction:
"""
This interface is used to generate a Transaction object for approve.
:param asset: a string which is used to indicate which asset we want to approve.
:param b58_send_address: a base58 encode address which indicate where the approve from.
:param b58_recv_address: a base58 encode address which indicate where the approve to.
:param amount: the amount of asset that will be approved.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which can be used for approve.
"""
if not isinstance(b58_send_address, str) or not isinstance(b58_recv_address, str):
raise SDKException(ErrorCode.param_err('the data type of base58 encode address should be the string.'))
if len(b58_send_address) != 34 or len(b58_recv_address) != 34:
raise SDKException(ErrorCode.param_err('the length of base58 encode address should be 34 bytes.'))
if amount <= 0:
raise SDKException(ErrorCode.other_error('the amount should be greater than than zero.'))
if gas_price < 0:
raise SDKException(ErrorCode.other_error('the gas price should be equal or greater than zero.'))
if gas_limit < 0:
raise SDKException(ErrorCode.other_error('the gas limit should be equal or greater than zero.'))
contract_address = self.get_asset_address(asset)
raw_send = Address.b58decode(b58_send_address).to_bytes()
raw_recv = Address.b58decode(b58_recv_address).to_bytes()
raw_payer = Address.b58decode(b58_payer_address).to_bytes()
args = {"from": raw_send, "to": raw_recv, "amount": amount}
invoke_code = build_native_invoke_code(contract_address, b'\x00', 'approve', args)
return Transaction(0, 0xd1, int(time()), gas_price, gas_limit, raw_payer, invoke_code, bytearray(), list())
def query_allowance(self, asset: str, b58_from_address: str,
b58_to_address: str) -> int:
"""
:param asset: a string which is used to indicate which asset's allowance we want to get.
:param b58_from_address: a base58 encode address which indicate where the allowance from.
:param b58_to_address: a base58 encode address which indicate where the allowance to.
:return: the amount of allowance in the from of int.
"""
contract_address = util.get_asset_address(asset)
raw_from = Address.b58decode(b58_from_address).to_array()
raw_to = Address.b58decode(b58_to_address).to_array()
args = {"from": raw_from, "to": raw_to}
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"allowance", args)
unix_time_now = int(time())
payer = Address(ZERO_ADDRESS).to_array()
version = 0
tx_type = 0xd1
gas_price = 0
gas_limit = 0
attributes = bytearray()
signers = list()
hash_value = bytearray()
tx = Transaction(version, tx_type, unix_time_now, gas_price, gas_limit,
payer, invoke_code, attributes, signers, hash_value)
allowance = self.__sdk.rpc.send_raw_transaction_pre_exec(tx)
array = bytearray(binascii.a2b_hex(allowance.encode('ascii')))
array.reverse()
try:
allowance = int(binascii.b2a_hex(array).decode('ascii'), 16)
except ValueError:
allowance = 0
return allowance
def make_transfer(self, contract_address: str, new_admin_ont_id: str, key_no: str, payer: str, gas_limit: str,gas_price: str):
param = {"contract_address": a2b_hex(contract_address.encode()), 'new_admin_ont_id': new_admin_ont_id.encode('utf-8'), 'key_no': key_no}
invoke_code = build_native_invoke_code(bytearray.fromhex(self.contract_address), bytes([0]), "transfer", param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit, payer.get_address().to_array(), invoke_code,
bytearray(), [], bytearray())
return tx
def get_public_keys(self, ont_id: str):
args = dict(ontid=ont_id.encode('utf-8'))
invoke_code = build_vm.build_native_invoke_code(self._contract_address, self._version, 'getPublicKeys', args)
tx = Transaction(0, TxType.InvokeNeoVm, 0, 0, b'', invoke_code)
response = self._sdk.default_network.send_raw_transaction_pre_exec(tx)
pub_keys = OntId.parse_pub_keys(ont_id, response['Result'])
return pub_keys
def delegate(self, identity: Identity, password: str, key_no: int,
contract_address: str, to_ont_id: str, role: str, period: int,
level: int, payer: Account, gas_limit: int, gas_price: int):
contract_address = bytearray.fromhex(contract_address)
param = {
"contract_address": contract_address,
"ont_id": identity.ont_id.encode('utf-8'),
"to_ont_id": to_ont_id.encode('utf-8'),
"role": role.encode('utf-8'),
"period": period,
"level": level,
"key_no": key_no
}
invoke_code = build_native_invoke_code(
bytearray.fromhex(self.contract_address), bytes([0]), "delegate",
param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
payer.get_address().to_array(), invoke_code,
bytearray(), [], bytearray())
account = self.__sdk.wallet_manager.get_account(
identity.ont_id, password)
self.__sdk.sign_transaction(tx, account)
self.__sdk.add_sign_transaction(tx, payer)
res = self.__sdk.rpc.send_raw_transaction(tx)
return res
def assign_funcs_to_role(self, admin_identity: Identity, password: str,
key_no: int, contract_address: str, role: str,
function_name: list, payer: Account,
gas_limit: int, gas_price: int):
contract_address = bytearray.fromhex(contract_address)
param = {
"contract_address": contract_address,
"ontid": admin_identity.ont_id.encode('utf-8'),
"role": role.encode('utf-8')
}
param['length'] = len(function_name)
for i in range(len(function_name)):
param['name' + str(i)] = function_name[i]
param['key_no'] = key_no
invoke_code = build_native_invoke_code(
bytearray.fromhex(self.contract_address), bytes([0]),
"assignFuncsToRole", param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
payer.get_address().to_array(), invoke_code,
bytearray(), [], bytearray())
account = self.__sdk.wallet_manager.get_account(
admin_identity.ont_id, password)
self.__sdk.sign_transaction(tx, account)
self.__sdk.add_sign_transaction(tx, payer)
res = self.__sdk.rpc.send_raw_transaction(tx)
return res
def new_transfer_from_transaction(self, asset: str, b58_send_address: str, b58_from_address: str,
b58_recv_address: str, amount: int, b58_payer_address: str, gas_limit: int,
gas_price: int) -> Transaction:
"""
This interface is used to generate a Transaction object that allow one account to transfer
a amount of ONT or ONG Asset to another account, in the condition of the first account had been approved.
:param asset: a string which is used to indicate which asset we want to transfer.
:param b58_send_address: a base58 encode address which indicate where the asset from.
:param b58_from_address: a base58 encode address which indicate where the asset from.
:param b58_recv_address: a base58 encode address which indicate where the asset to.
:param amount: the amount of asset that will be transferred.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which allow one account to transfer a amount of asset to another account.
"""
raw_sender = Address.b58decode(b58_send_address).to_bytes()
raw_from = Address.b58decode(b58_from_address).to_bytes()
raw_to = Address.b58decode(b58_recv_address).to_bytes()
raw_payer = Address.b58decode(b58_payer_address).to_bytes()
contract_address = self.get_asset_address(asset)
args = {"sender": raw_sender, "from": raw_from, "to": raw_to, "amount": amount}
invoke_code = build_native_invoke_code(contract_address, b'\x00', "transferFrom", args)
unix_time_now = int(time())
return Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit, raw_payer, invoke_code, bytearray(), list())
def new_add_recovery_transaction(ont_id: str, hex_public_key: str,
b58_recovery_address: str,
b58_payer_address: str, gas_limit: int,
gas_price: int):
"""
This interface is used to generate a Transaction object which is used to add the recovery.
:param ont_id: ontid.
:param hex_public_key: the hexadecimal public key in the form of string.
:param b58_recovery_address: a base58 encode address which indicate who is the recovery.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return:
"""
contract_address = ONTID_CONTRACT_ADDRESS
bytes_recovery_address = Address.b58decode(
b58_recovery_address).to_array()
bytearray_public_key = bytearray.fromhex(hex_public_key)
args = {
"ontid": ont_id.encode(),
"recovery": bytes_recovery_address,
"pubkey": bytearray_public_key
}
invoke_code = build_vm.build_native_invoke_code(
contract_address, bytes([0]), "addRecovery", args)
unix_time_now = int(time())
bytes_payer_address = Address.b58decode(b58_payer_address).to_array()
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
bytes_payer_address, invoke_code, bytearray(), [],
bytearray())
return tx
def new_add_attribute_transaction(ont_id: str, hex_public_key: str,
attribute_list: list,
b58_payer_address: str, gas_limit: int,
gas_price: int):
"""
This interface is used to generate a Transaction object which is used to add attribute.
:param ont_id: ontid.
:param hex_public_key: the hexadecimal public key in the form of string.
:param attribute_list: a list of attributes we want to add.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which is used to add attribute.
"""
contract_address = ONTID_CONTRACT_ADDRESS
args = {"ontid": ont_id.encode(), "length": len(attribute_list)}
for i in range(len(attribute_list)):
args["key" + str(i)] = bytes(attribute_list[i]["key"].encode())
args["type" + str(i)] = bytes(attribute_list[i]["type"].encode())
args["value" + str(i)] = bytes(attribute_list[i]["value"].encode())
args["pubkey"] = bytearray.fromhex(hex_public_key)
invoke_code = build_vm.build_native_invoke_code(
contract_address, bytes([0]), "addAttributes", args)
unix_time_now = int(time())
array_payer_address = Address.b58decode(b58_payer_address).to_array()
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
array_payer_address, invoke_code, bytearray(), [],
bytearray())
return tx
def new_add_public_key_transaction(ont_id: str,
hex_public_key_or_recovery: str,
hex_new_public_key: str, payer: str,
gas_limit: int, gas_price: int):
"""
This interface is used to send a Transaction object which is used to add public key.
:param ont_id: ontid.
:param hex_public_key_or_recovery: the old hexadecimal public key in the form of string.
:param hex_new_public_key: the new hexadecimal public key in the form of string.
:param payer: an Account object which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which is used to add public key.
"""
contract_address = ONTID_CONTRACT_ADDRESS
args = {
"ontid": ont_id.encode(),
"pubkey": bytearray.fromhex(hex_new_public_key),
"pubkey_or_recovery": bytearray.fromhex(hex_public_key_or_recovery)
}
invoke_code = build_vm.build_native_invoke_code(
contract_address, bytes([0]), "addKey", args)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
Address.b58decode(payer).to_array(), invoke_code,
bytearray(), [], bytearray())
return tx
def new_remove_attribute_transaction(ont_id: str, hex_public_key: str,
path: str, b58_payer_address: str,
gas_limit: int, gas_price: int):
"""
This interface is used to generate a Transaction object which is used to remove attribute.
:param ont_id: ontid.
:param hex_public_key: the hexadecimal public key in the form of string.
:param path: a string which is used to indicate which attribute we want to remove.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which is used to remove attribute.
"""
contract_address = ONTID_CONTRACT_ADDRESS
args = {
"ontid": ont_id.encode(),
"key": bytes(path.encode()),
"pubkey": bytearray.fromhex(hex_public_key)
}
invoke_code = build_vm.build_native_invoke_code(
contract_address, bytes([0]), "removeAttribute", args)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
Address.b58decode(b58_payer_address).to_array(),
invoke_code, bytearray(), [], bytearray())
return tx
def query_balance(self, asset: str, b58_address: str) -> int:
"""
This interface is used to query the account's ONT or ONG balance.
:param asset: a string which is used to indicate which asset we want to check the balance.
:param b58_address: a base58 encode account address.
:return: account balance.
"""
raw_address = Address.b58decode(b58_address).to_array()
contract_address = util.get_asset_address(asset)
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"balanceOf", raw_address)
unix_time_now = int(time())
payer = Address(ZERO_ADDRESS).to_array()
version = 0
tx_type = 0xd1
gas_price = 0
gas_limit = 0
attributes = bytearray()
signers = list()
hash_value = bytearray()
tx = Transaction(version, tx_type, unix_time_now, gas_price, gas_limit,
payer, invoke_code, attributes, signers, hash_value)
balance = self.__sdk.rpc.send_raw_transaction_pre_exec(tx)
array = bytearray(binascii.a2b_hex(balance.encode('ascii')))
array.reverse()
try:
balance = int(binascii.b2a_hex(array).decode('ascii'), 16)
except ValueError:
balance = 0
return balance
async def get_ddo(ont_id):
contract_address = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03'
version = b'\x00'
remote = 'http://dappnode1.ont.io:20336/'
sdk = Ontology(rpc_address=remote)
args = dict(ontid=ont_id.encode('utf-8'))
invoke_code = build_vm.build_native_invoke_code(contract_address, version,
'getDDO', args)
tx = Transaction(0, 0xd1, 0, 0, b'', invoke_code)
response = await sdk.aio_rpc.send_raw_transaction_pre_exec(tx)
serialized_ddo = response['Result']
if len(serialized_ddo) == 0:
return dict()
if isinstance(serialized_ddo, str):
stream = StreamManager.get_stream(bytearray.fromhex(serialized_ddo))
elif isinstance(serialized_ddo, bytes):
stream = StreamManager.get_stream(serialized_ddo)
else:
raise SDKException(
ErrorCode.params_type_error('unexpected data type {}'.format(
type(serialized_ddo))))
reader = BinaryReader(stream)
try:
public_key_bytes = reader.read_var_bytes()
except SDKException:
public_key_bytes = b''
try:
attribute_bytes = reader.read_var_bytes()
except SDKException:
attribute_bytes = b''
try:
recovery_bytes = reader.read_var_bytes()
except SDKException:
recovery_bytes = b''
if len(recovery_bytes) != 0:
b58_recovery = Address(recovery_bytes).b58encode()
else:
b58_recovery = ''
try:
controller = reader.read_var_bytes().decode('utf-8')
except SDKException:
controller = ''
try:
recovery = reader.read_var_bytes().decode('utf-8')
except SDKException:
recovery = ''
pub_keys = ontid.OntId.parse_pub_keys(ont_id, public_key_bytes)
attribute_list = ontid.OntId.parse_attributes(attribute_bytes)
return dict(
id=ont_id,
keys=pub_keys,
ctrl=controller,
attributes=attribute_list,
recovery=recovery if recovery else b58_recovery,
)
def get_public_keys(self, ont_id: str):
args = dict(ontid=ont_id.encode('utf-8'))
invoke_code = build_vm.build_native_invoke_code(self.__contract_address, self.__version, 'getPublicKeys', args)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, 0, 0, None, invoke_code, bytearray(), [])
response = self.__sdk.get_network().send_raw_transaction_pre_exec(tx)
pub_keys = OntId.parse_pub_keys(ont_id, response['Result'])
return pub_keys
def new_allowance_tx(self, from_address: Union[str, Address],
to_address: Union[str, Address]) -> InvokeTransaction:
args = dict(from_address=Address.b58decode(from_address),
to_address=Address.b58decode(to_address))
invoke_code = build_native_invoke_code(self._invoke_address,
self._version, 'allowance',
args)
return InvokeTransaction(payload=invoke_code)
def query_decimals(self, asset: str):
contract_address = util.get_asset_address(asset)
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"decimals", bytearray())
unix_timenow = int(time())
payer = Address(ZERO_ADDRESS).to_array()
tx = Transaction(0, 0xd1, unix_timenow, 0, 0, payer, invoke_code,
bytearray(), [], bytearray())
res = self.__sdk.rpc.send_raw_transaction_preexec(tx)
return res
def verify_token(self, identity: Identity, password: str, key_no: int, contract_address: str, function_name: str):
contract_address = bytearray.fromhex(contract_address)
param = {"contract_address": contract_address, "ontid": identity.ont_id.encode('utf-8'), "function_name": function_name.encode('utf-8'), "key_no": key_no}
invoke_code = build_native_invoke_code(bytearray.fromhex(self.contract_address), bytes([0]), "verifyToken", param)
unix_time_now = int(time())
tx = Transaction(0, 0xd1, unix_time_now, 0, 0, Address(ZERO_ADDRESS).to_array(), invoke_code, bytearray(), [], bytearray())
account = self.__sdk.wallet_manager.get_account(identity.ont_id, password)
self.__sdk.sign_transaction(tx, account)
res = self.__sdk.rpc.send_raw_transaction_pre_exec(tx)
return res
def query_symbol(self, asset: str) -> str:
contract_address = util.get_asset_address(asset)
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"symbol", bytearray())
unix_time_now = int(time())
payer = Address(ZERO_ADDRESS).to_array()
tx = Transaction(0, 0xd1, unix_time_now, 0, 0, payer, invoke_code,
bytearray(), [], bytearray())
res = self.__sdk.rpc.send_raw_transaction_pre_exec(tx)
return bytes.fromhex(res).decode()
def new_registry_ontid_transaction(ont_id: str, pubkey: str, payer: str,
gas_limit: int, gas_price: int):
contract_address = ONTID_CONTRACT_ADDRESS
args = {"ontid": ont_id.encode(), "pubkey": bytearray.fromhex(pubkey)}
invoke_code = build_vm.build_native_invoke_code(
contract_address, bytes([0]), "regIDWithPublicKey", args)
unix_time_now = int(time())
return Transaction(0, 0xd1, unix_time_now, gas_price, gas_limit,
Address.b58decode(payer).to_array(), invoke_code,
bytearray(), [], bytearray())
def new_transfer_transaction(asset: str, b58_from_address: str,
b58_to_address: str, amount: int,
b58_payer_address: str, gas_limit: int,
gas_price: int) -> Transaction:
"""
This interface is used to generate a Transaction object for transfer.
:param asset: a string which is used to indicate which asset we want to transfer.
:param b58_from_address: a base58 encode address which indicate where the asset from.
:param b58_to_address: a base58 encode address which indicate where the asset to.
:param amount: the amount of asset that will be transferred.
:param b58_payer_address: a base58 encode address which indicate who will pay for the transaction.
:param gas_limit: an int value that indicate the gas limit.
:param gas_price: an int value that indicate the gas price.
:return: a Transaction object which can be used for transfer.
"""
if not isinstance(b58_from_address, str) or not isinstance(
b58_to_address, str) or not isinstance(b58_payer_address, str):
raise SDKException(
ErrorCode.param_err(
'the data type of base58 encode address should be the string.'
))
if len(b58_from_address) != 34 or len(b58_to_address) != 34 or len(
b58_payer_address) != 34:
raise SDKException(
ErrorCode.param_err(
'the length of base58 encode address should be 34 bytes.'))
if amount <= 0:
raise SDKException(
ErrorCode.other_error(
'the amount should be greater than than zero.'))
if gas_price < 0:
raise SDKException(
ErrorCode.other_error(
'the gas price should be equal or greater than zero.'))
if gas_limit < 0:
raise SDKException(
ErrorCode.other_error(
'the gas limit should be equal or greater than zero.'))
contract_address = util.get_asset_address(asset)
raw_from = Address.b58decode(b58_from_address).to_array()
raw_to = Address.b58decode(b58_to_address).to_array()
raw_payer = Address.b58decode(b58_payer_address).to_array()
state = [{"from": raw_from, "to": raw_to, "amount": amount}]
invoke_code = build_native_invoke_code(contract_address, bytes([0]),
"transfer", state)
unix_time_now = int(time())
version = 0
tx_type = 0xd1
attributes = bytearray()
signers = list()
hash_value = bytearray()
return Transaction(version, tx_type, unix_time_now, gas_price,
gas_limit, raw_payer, invoke_code, attributes,
signers, hash_value)
def new_get_ddo_transaction(ont_id: str):
contract_address = ONTID_CONTRACT_ADDRESS
args = {"ontid": ont_id.encode()}
invoke_code = build_vm.build_native_invoke_code(
contract_address, bytes([0]), "getDDO", args)
unix_time_now = int(time())
payer = Address(
a2b_hex("0000000000000000000000000000000000000000".encode())
).to_array()
return Transaction(0, 0xd1, unix_time_now, 0, 0, payer, invoke_code,
bytearray(), [], bytearray())
def query_balance(self, asset: str, addr: str):
contract_address = util.get_asset_address(asset)
invoke_code = build_native_invoke_code(
contract_address, bytes([0]), "balanceOf",
Address.decodeBase58(addr).to_array())
unix_timenow = int(time())
payer = Address(ZERO_ADDRESS).to_array()
tx = Transaction(0, 0xd1, unix_timenow, 0, 0, payer, invoke_code,
bytearray(), [], bytearray())
res = self.__sdk.rpc.send_raw_transaction_preexec(tx)
return int(res, 16)
def __generate_transaction(self, method: str, args: dict, b58_payer_address: str or None, gas_limit: int,
gas_price: int):
if isinstance(b58_payer_address, str):
payer = Address.b58decode(b58_payer_address).to_bytes()
elif b58_payer_address is None:
payer = None
else:
raise SDKException(ErrorCode.require_str_params)
invoke_code = build_vm.build_native_invoke_code(self.__contract_address, self.__version, method, args)
tx = Transaction(0, 0xd1, int(time()), gas_price, gas_limit, payer, invoke_code, bytearray(), [])
return tx
