def decode_call_method_response(buf: bytes) -> CallMethodResponse:
call_method_response_msg = StreamReader(buf)
if call_method_response_msg.get_size() == 0:
raise RuntimeError(f'response is corrupt and cannot be decoded')
# decode request status
request_status = request_status_decode(
call_method_response_msg.read_uint16())
# decode method arguments
output_arguments = method_arguments_opaque_decode(
call_method_response_msg.read_bytes())
# decode execution result
execution_result = execution_result_decode(
call_method_response_msg.read_uint16())
# read block height
block_height = call_method_response_msg.read_uint64()
# decode block timestamp
block_timestamp = unix_nano_to_date(call_method_response_msg.read_uint64())
return CallMethodResponse(request_status=request_status,
execution_result=execution_result,
output_arguments=output_arguments,
block_height=block_height,
block_timestamp=block_timestamp)
def method_arguments_opaque_decode(buf: bytes) -> List[MethodArgument]:
args = list()
method_args_reader = StreamReader(buf)
while not method_args_reader.done_reading():
arg = StreamReader(method_args_reader.read_bytes())
name = arg.read_bytes() # not using the arg name
arg_type = arg.read_uint16()
if arg_type == 0:
val = arg.read_uint32()
args.append(Uint32Arg(val))
elif arg_type == 1:
val = arg.read_uint64()
args.append(Uint64Arg(val))
elif arg_type == 2:
val = arg.read_string()
args.append(StringArg(val))
elif arg_type == 3:
val = arg.read_bytes()
args.append(BytesArg(val))
else:
raise ValueError(
f'received MethodArgument {name} has an unknown type: {arg_type}'
)
return args
def decode_send_transaction_response(buf: bytes) -> SendTransactionResponse:
send_transaction_response_msg = StreamReader(buf)
if send_transaction_response_msg.get_size() == 0:
raise RuntimeError(f'response is corrupt and cannot be decoded')
# decode request status
request_status = request_status_decode(
send_transaction_response_msg.read_uint16())
# read transaction receipt message
transaction_receipt_msg = StreamReader(
send_transaction_response_msg.read_bytes())
# read tx hash
tx_hash = transaction_receipt_msg.read_bytes()
# decode execution result
execution_result = execution_result_decode(
transaction_receipt_msg.read_uint16())
# decode method arguments
output_arguments = method_arguments_opaque_decode(
transaction_receipt_msg.read_bytes())
# decode transaction status
transaction_status = transaction_status_decode(
send_transaction_response_msg.read_uint16())
# read block height
block_height = send_transaction_response_msg.read_uint64()
# decode block timestamp
block_timestamp = unix_nano_to_date(
send_transaction_response_msg.read_uint64())
return SendTransactionResponse(request_status=request_status,
tx_hash=tx_hash,
execution_result=execution_result,
output_arguments=output_arguments,
transaction_status=transaction_status,
block_height=block_height,
block_timestamp=block_timestamp)
def test_read_uint64(self):
stream = bytes([0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF])
reader = StreamReader(stream)
expected = 18446744073709551615
self.assertEqual(expected, reader.read_uint64())
reader.close()