def _set_topic_value(self, *, topics: List[Tuple[str, Any]],
log: Dict[str, Any]) -> None:
if len(topics) != len(log['topics'][1:]):
raise LogParsingError("Error parsing log topics, expect"
"{} topics but get {}.".format(
len(topics), len(log['topics'][1:])))
for (i, topic) in enumerate(topics):
val = self._parse_value(val_type=topic[1],
val=log['topics'][i + 1])
setattr(self, topic[0], val)
def _set_data_value(self, *, data: List[Tuple[str, Any]],
log: Dict[str, Any]) -> None:
data_bytes = decode_hex(log['data'])
if len(data) * 32 != len(data_bytes):
raise LogParsingError("Error parsing log data, expect"
"{} data but get {}.".format(
len(data), len(data_bytes)))
for (i, (name, type_)) in enumerate(data):
val = self._parse_value(val_type=type_,
val=data_bytes[i * 32:(i + 1) * 32])
setattr(self, name, val)
def _parse_value(self, *, val_type: str,
val: bytes) -> Union[bool, Address, bytes, int]:
if val_type == 'bool':
return bool(big_endian_to_int(val))
elif val_type == 'address':
return to_canonical_address(val[-20:])
elif val_type == 'bytes32':
return val
elif 'int' in val_type:
return big_endian_to_int(val)
else:
raise LogParsingError(
"Error parsing the type of given value. Expect bool/address/bytes32/int*"
"but get {}.".format(val_type))
def _extract_event_abi(self, *, event_name: str) -> Dict[str, Any]:
for func in get_smc_json()['abi']:
if func['name'] == event_name and func['type'] == 'event':
return func
raise LogParsingError("Can not find event {}".format(event_name))