def extract(self, tx: Transaction):
cl = inject.instance(ParityEthJsonRpc)
tx._reciept = cl.eth_getTransactionReceipt(tx.hash)
mapper = TxReceiptLogMapper()
for log_dict in tx._reciept['logs']:
receipt_log = mapper.dict_to_receipt_log(log_dict)
topics = receipt_log.topics
if topics is None or len(topics) < 1:
logger.warning(
"Topics are empty in log {} of transaction {}".format(
receipt_log.log_index, receipt_log.transaction_hash))
continue
if topics[0] == TRANSFER_EVENT_TOPIC:
topics_with_data = topics + split_to_words(receipt_log.data)
if len(topics_with_data) != 4:
logger.warning(
"The number of topics and data parts is not equal to 4 in log {} of transaction {}"
.format(receipt_log.log_index,
receipt_log.transaction_hash))
continue
token_transfer = TokenTransfer()
token_transfer.value_id = to_normalized_address(
receipt_log.address)
token_transfer.from_address = word_to_address(
topics_with_data[1])
token_transfer.to_address = word_to_address(
topics_with_data[2])
token_transfer.value = hex_to_dec(topics_with_data[3])
token_transfer.transaction_hash = receipt_log.transaction_hash
token_transfer.block_number = tx.block_number
token_transfer.transaction_hash = tx.hash
yield token_transfer
