def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0x7e8881001566f9f89aedb9c5dc3d856a2b81e5235a8196413ed484be91cc0df6":
event_data = get_event_data(codec, self.kick_abi, event)
return Flopper.KickLog(event_data)
else:
event_data = get_event_data(codec, self.log_note_abi, event)
return LogNote(event_data)
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0xc84ce3a1172f0dec3173f04caaa6005151a4bfe40d4c9f3ea28dba5f719b2a7a":
event_data = get_event_data(codec, self.kick_abi, event)
return Flipper.KickLog(event_data)
else:
event_data = get_event_data(codec, self.log_note_abi, event)
return LogNote(event_data)
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0xe6dde59cbc017becba89714a037778d234a84ce7f0a137487142a007e580d609":
event_data = get_event_data(codec, self.kick_abi, event)
return Flapper.KickLog(event_data)
else:
event_data = get_event_data(codec, self.log_note_abi, event)
return LogNote(event_data)
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0x9102bd0b66dcb83f469f1122a583dc797657b114141460c59230fc1b41f48229":
event_data = get_event_data(codec, self.start_auction_abi, event)
return DebtAuctionHouse.StartAuctionLog(event_data)
elif signature == "0x8c63feacc784a7f735e454365ba433f17d17293b02c57d98dad113977dbf0f13":
event_data = get_event_data(codec, self.decrease_sold_amount_abi,
event)
return DebtAuctionHouse.DecreaseSoldAmountLog(event_data)
elif signature == "0xef063949eb6ef5abef19139d9c75a558424ffa759302cfe445f8d2d327376fe4":
event_data = get_event_data(codec, self.settle_auction_abi, event)
return DebtAuctionHouse.SettleAuctionLog(event_data)
def populate_volume(infos: List[ExchangeInfo]) -> List[ExchangeInfo]:
for info in infos:
volume = list()
info.volume = list()
exchange = web3.eth.contract(abi=UNISWAP_EXCHANGE_ABI,
address=info.exchange_address)
i = 0
total_trade_volume = defaultdict(int)
for block_number in get_chart_range():
trade_volume = defaultdict(int)
while i < len(
info.logs) and info.logs[i]['blockNumber'] < block_number:
log = info.logs[i]
i += 1
topic = log['topics'][0].hex()
if topic == EVENT_ETH_PURCHASE:
event = get_event_data(
web3.codec,
exchange.events.EthPurchase._get_event_abi(), log)
trade_volume[event['args'][
'buyer']] += event['args']['eth_bought'] / 0.997
total_trade_volume[event['args'][
'buyer']] += event['args']['eth_bought'] / 0.997
elif topic == EVENT_TOKEN_PURCHASE:
event = get_event_data(
web3.codec,
exchange.events.TokenPurchase._get_event_abi(), log)
trade_volume[event['args']
['buyer']] += event['args']['eth_sold']
total_trade_volume[event['args']
['buyer']] += event['args']['eth_sold']
volume.append(trade_volume)
total_volume = sum(total_trade_volume.values())
valuable_traders = {
t
for (t, v) in total_trade_volume.items() if v > total_volume / 1000
}
info.valuable_traders = list(valuable_traders)
for vol in volume:
filtered_vol = defaultdict(int)
for (t, v) in vol.items():
if t in valuable_traders:
filtered_vol[t] = v
else:
filtered_vol['Other'] += v
info.volume.append(filtered_vol)
logging.info('Volumes of {} exchanges populated'.format(len(infos)))
return infos
def __init__(self, receipt):
self.raw_receipt = receipt
self.transaction_hash = receipt['transactionHash']
self.gas_used = receipt['gasUsed']
self.transfers = []
self.result = None
receipt_logs = receipt['logs']
if (receipt_logs is not None) and (len(receipt_logs) > 0):
self.successful = True
for receipt_log in receipt_logs:
if len(receipt_log['topics']) > 0:
# $ seth keccak $(seth --from-ascii "Transfer(address,address,uint256)")
# 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
if receipt_log['topics'][0] == HexBytes('0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'):
from pymaker.token import ERC20Token
transfer_abi = [abi for abi in ERC20Token.abi if abi.get('name') == 'Transfer'][0]
codec = ABICodec(default_registry)
event_data = get_event_data(codec, transfer_abi, receipt_log)
self.transfers.append(Transfer(token_address=Address(event_data['address']),
from_address=Address(event_data['args']['from']),
to_address=Address(event_data['args']['to']),
value=Wad(event_data['args']['value'])))
# $ seth keccak $(seth --from-ascii "Mint(address,uint256)")
# 0x0f6798a560793a54c3bcfe86a93cde1e73087d944c0ea20544137d4121396885
if receipt_log['topics'][0] == HexBytes('0x0f6798a560793a54c3bcfe86a93cde1e73087d944c0ea20544137d4121396885'):
from pymaker.token import DSToken
transfer_abi = [abi for abi in DSToken.abi if abi.get('name') == 'Mint'][0]
codec = ABICodec(default_registry)
event_data = get_event_data(codec, transfer_abi, receipt_log)
self.transfers.append(Transfer(token_address=Address(event_data['address']),
from_address=Address('0x0000000000000000000000000000000000000000'),
to_address=Address(event_data['args']['guy']),
value=Wad(event_data['args']['wad'])))
# $ seth keccak $(seth --from-ascii "Burn(address,uint256)")
# 0xcc16f5dbb4873280815c1ee09dbd06736cffcc184412cf7a71a0fdb75d397ca5
if receipt_log['topics'][0] == HexBytes('0xcc16f5dbb4873280815c1ee09dbd06736cffcc184412cf7a71a0fdb75d397ca5'):
from pymaker.token import DSToken
transfer_abi = [abi for abi in DSToken.abi if abi.get('name') == 'Burn'][0]
codec = ABICodec(default_registry)
event_data = get_event_data(codec, transfer_abi, receipt_log)
self.transfers.append(Transfer(token_address=Address(event_data['address']),
from_address=Address(event_data['args']['guy']),
to_address=Address('0x0000000000000000000000000000000000000000'),
value=Wad(event_data['args']['wad'])))
else:
self.successful = False
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0x7c5bfdc0a5e8192f6cd4972f382cec69116862fb62e6abff8003874c58e064b8":
event_data = get_event_data(codec, self.kick_abi, event)
return Clipper.KickLog(event_data)
elif signature == "0x05e309fd6ce72f2ab888a20056bb4210df08daed86f21f95053deb19964d86b1":
event_data = get_event_data(codec, self.take_abi, event)
self._get_sender_for_eventlog(event_data)
return Clipper.TakeLog(event_data, self._get_sender_for_eventlog(event_data))
elif signature == "0x275de7ecdd375b5e8049319f8b350686131c219dd4dc450a08e9cf83b03c865f":
event_data = get_event_data(codec, self.redo_abi, event)
return Clipper.RedoLog(event_data)
else:
logger.debug(f"Found event signature {signature}")
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0xdf7b5cd0ee6547c7389d2ac00ee0c1cd3439542399d6c8c520cc69c7409c0990":
event_data = get_event_data(codec, self.start_auction_abi, event)
return FixedDiscountCollateralAuctionHouse.StartAuctionLog(
event_data)
elif signature == "0xa4a1133e32fac37643a1fe1db4631daadb462c8662ae16004e67f0b8bb608383":
event_data = get_event_data(codec, self.buy_collateral_abi, event)
return FixedDiscountCollateralAuctionHouse.BuyCollateralLog(
event_data)
elif signature == "0xef063949eb6ef5abef19139d9c75a558424ffa759302cfe445f8d2d327376fe4":
event_data = get_event_data(codec, self.settle_auction_abi, event)
return FixedDiscountCollateralAuctionHouse.SettleAuctionLog(
event_data)
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0xa4863af70e77aecfe2769e0569806782ba7c6f86fc9a307290a3816fb8a563e5":
event_data = get_event_data(codec, self.start_auction_abi, event)
return PreSettlementSurplusAuctionHouse.StartAuctionLog(event_data)
elif signature == "0xd87c815d5a67c2e130ad04b714d87a6fb69d5a6df0dbb0f1639cd9fe292201f9":
event_data = get_event_data(codec, self.increase_bid_size_abi,
event)
return PreSettlementSurplusAuctionHouse.IncreaseBidSizeLog(
event_data)
elif signature == "0x03af424b0e12d91ea31fe7f2c199fc02c9ede38f9aa1bdc019a8087b41445f7a":
event_data = get_event_data(codec, self.settle_auction_abi, event)
return PreSettlementSurplusAuctionHouse.SettleAuctionLog(
event_data)
def _parse_logs(self, txn_receipt):
for log in txn_receipt['logs']:
try:
decoded_log = get_event_data(self.abi, log)
except MismatchedABI:
continue
yield decoded_log
def test_event_data_extraction(web3,
emitter,
wait_for_transaction,
emitter_log_topics,
emitter_event_ids,
contract_fn,
event_name,
call_args,
expected_args):
emitter_fn = emitter.functions[contract_fn]
event_id = getattr(emitter_event_ids, event_name)
txn_hash = emitter_fn(event_id, *call_args).transact()
txn_receipt = wait_for_transaction(web3, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
event_abi = emitter._find_matching_event_abi(event_name)
event_topic = getattr(emitter_log_topics, event_name)
is_anonymous = event_abi['anonymous']
if is_anonymous:
assert event_topic not in log_entry['topics']
else:
assert event_topic in log_entry['topics']
event_data = get_event_data(event_abi, log_entry)
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt['transactionIndex']
assert is_same_address(event_data['address'], emitter.address)
assert event_data['event'] == event_name
def test_event_data_extraction_bytes(web3, emitter, wait_for_transaction,
emitter_log_topics, emitter_event_ids,
call_args, expected_args):
emitter_fn = emitter.functions.logListArgs
txn_hash = emitter_fn(*call_args).transact()
txn_receipt = wait_for_transaction(web3, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
event_name = 'LogListArgs'
event_abi = emitter._find_matching_event_abi(event_name)
event_topic = getattr(emitter_log_topics, event_name)
assert event_topic in log_entry['topics']
event_data = get_event_data(web3.codec, event_abi, log_entry)
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt['transactionIndex']
assert is_same_address(event_data['address'], emitter.address)
assert event_data['event'] == event_name
def test_event_data_extraction_bytes_with_warning(web3, emitter,
wait_for_transaction,
emitter_log_topics):
with pytest.warns(
DeprecationWarning,
match=
'in v6 it will be invalid to pass a hex string without the "0x" prefix'
):
txn_hash = emitter.functions.logListArgs(['13'], ['54']).transact()
txn_receipt = wait_for_transaction(web3, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
event_name = 'LogListArgs'
event_abi = emitter._find_matching_event_abi(event_name)
event_topic = getattr(emitter_log_topics, event_name)
assert event_topic in log_entry['topics']
event_data = get_event_data(web3.codec, event_abi, log_entry)
expected_args = {
'arg0':
b']\x0b\xf6sp\xbe\xa2L\xa9is\xe4\xab\xb7\xfa+nVJpgt\xa7\x8f:\xa4\x9f\xdb\x93\xf0\x8f\xae', # noqa: E501
'arg1': [b'T\x00']
}
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt[
'transactionIndex']
assert is_same_address(event_data['address'], emitter.address)
assert event_data['event'] == event_name
def test_dynamic_length_argument_extraction(web3, emitter,
wait_for_transaction,
emitter_log_topics,
emitter_event_ids):
string_0 = "this-is-the-first-string-which-exceeds-32-bytes-in-length"
string_1 = "this-is-the-second-string-which-exceeds-32-bytes-in-length"
txn_hash = emitter.functions.logDynamicArgs(string_0, string_1).transact()
txn_receipt = wait_for_transaction(web3, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
event_abi = emitter._find_matching_event_abi('LogDynamicArgs')
event_topic = emitter_log_topics.LogDynamicArgs
assert event_topic in log_entry['topics']
string_0_topic = web3.keccak(text=string_0)
assert string_0_topic in log_entry['topics']
event_data = get_event_data(web3.codec, event_abi, log_entry)
expected_args = {
"arg0": string_0_topic,
"arg1": string_1,
}
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt['transactionIndex']
assert is_same_address(event_data['address'], emitter.address)
assert event_data['event'] == 'LogDynamicArgs'
def test_event_data_extraction(web3, emitter, wait_for_transaction,
emitter_log_topics, emitter_event_ids,
contract_fn, event_name, call_args,
expected_args):
emitter_fn = emitter.functions[contract_fn]
event_id = getattr(emitter_event_ids, event_name)
txn_hash = emitter_fn(event_id, *call_args).transact()
txn_receipt = wait_for_transaction(web3, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
event_abi = emitter._find_matching_event_abi(event_name)
event_topic = getattr(emitter_log_topics, event_name)
is_anonymous = event_abi['anonymous']
if is_anonymous:
assert event_topic not in log_entry['topics']
else:
assert event_topic in log_entry['topics']
event_data = get_event_data(web3.codec, event_abi, log_entry)
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt['transactionIndex']
assert is_same_address(event_data['address'], emitter.address)
assert event_data['event'] == event_name
def test_dynamic_length_argument_extraction(web3,
emitter,
wait_for_transaction,
emitter_log_topics,
emitter_event_ids):
string_0 = "this-is-the-first-string-which-exceeds-32-bytes-in-length"
string_1 = "this-is-the-second-string-which-exceeds-32-bytes-in-length"
txn_hash = emitter.functions.logDynamicArgs(string_0, string_1).transact()
txn_receipt = wait_for_transaction(web3, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
event_abi = emitter._find_matching_event_abi('LogDynamicArgs')
event_topic = emitter_log_topics.LogDynamicArgs
assert event_topic in log_entry['topics']
string_0_topic = web3.keccak(text=string_0)
assert string_0_topic in log_entry['topics']
event_data = get_event_data(event_abi, log_entry)
expected_args = {
"arg0": string_0_topic,
"arg1": string_1,
}
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt['transactionIndex']
assert is_same_address(event_data['address'], emitter.address)
assert event_data['event'] == 'LogDynamicArgs'
def test_argument_extraction_strict_bytes_types(w3_strict_abi, strict_emitter,
wait_for_transaction,
emitter_log_topics):
arg_0 = [b'12']
arg_1 = [b'12']
txn_hash = strict_emitter.functions.logListArgs(arg_0, arg_1).transact()
txn_receipt = wait_for_transaction(w3_strict_abi, txn_hash)
assert len(txn_receipt['logs']) == 1
log_entry = txn_receipt['logs'][0]
assert len(log_entry['topics']) == 2
event_abi = strict_emitter._find_matching_event_abi('LogListArgs')
event_topic = emitter_log_topics.LogListArgs
assert event_topic in log_entry['topics']
encoded_arg_0 = w3_strict_abi.codec.encode_abi(['bytes2'], arg_0)
padded_arg_0 = encoded_arg_0.ljust(32, b'\x00')
arg_0_topic = w3_strict_abi.keccak(padded_arg_0)
assert arg_0_topic in log_entry['topics']
event_data = get_event_data(w3_strict_abi.codec, event_abi, log_entry)
expected_args = {"arg0": arg_0_topic, "arg1": arg_1}
assert event_data['args'] == expected_args
assert event_data['blockHash'] == txn_receipt['blockHash']
assert event_data['blockNumber'] == txn_receipt['blockNumber']
assert event_data['transactionIndex'] == txn_receipt['transactionIndex']
assert is_same_address(event_data['address'], strict_emitter.address)
assert event_data['event'] == 'LogListArgs'
def populate_providers(infos: List[ExchangeInfo],
saved_block: int) -> List[ExchangeInfo]:
for info in infos:
exchange = web3.eth.contract(abi=UNISWAP_EXCHANGE_ABI,
address=info.exchange_address)
for log in info.logs:
if log['blockNumber'] < saved_block:
continue
if log['topics'][0].hex(
) != EVENT_TRANSFER or log['address'] != info.exchange_address:
continue
event = get_event_data(exchange.events.Transfer._get_event_abi(),
log)
if event['args'][
'_from'] == '0x0000000000000000000000000000000000000000':
info.providers[event['args']['_to']] += event['args']['_value']
elif event['args'][
'_to'] == '0x0000000000000000000000000000000000000000':
info.providers[event['args']
['_from']] -= event['args']['_value']
owner = exchange.functions.owner().call(
block_identifier=log['blockNumber'])
info.providers[owner] = exchange.functions.balanceOf(
owner).call(block_identifier=log['blockNumber'])
else:
info.providers[event['args']
['_from']] -= event['args']['_value']
info.providers[event['args']['_to']] += event['args']['_value']
logging.info('Loaded info about providers of {} exchanges'.format(
len(infos)))
return infos
def _parse_logs(self, txn_receipt):
for log in txn_receipt['logs']:
try:
decoded_log = get_event_data(self.abi, log)
except MismatchedABI:
continue
yield decoded_log
def build_filter(self):
builder = EventFilterBuilder(
self._get_event_abi(),
self.web3.codec,
formatter=get_event_data(self.web3.codec, self._get_event_abi()))
builder.address = self.address
return builder
def _parse_logs(self, txn_receipt, errors):
try:
errors.name
except AttributeError:
raise AttributeError(f'Error flag must be one of: {EventLogErrorFlags.flag_options()}')
for log in txn_receipt['logs']:
try:
rich_log = get_event_data(self.web3.codec, self.abi, log)
except (MismatchedABI, LogTopicError, InvalidEventABI, TypeError) as e:
if errors == DISCARD:
continue
elif errors == IGNORE:
new_log = MutableAttributeDict(log)
new_log['errors'] = e
rich_log = AttributeDict(new_log)
elif errors == STRICT:
raise e
else:
warnings.warn(
f'The log with transaction hash: {log.transactionHash} and '
f'logIndex: {log.logIndex} encountered the following error '
f'during processing: {type(e).__name__}({e}). It has been discarded.'
)
continue
yield rich_log
def _fetch_events_for_all_contracts(web3, event, argument_filters: dict,
from_block: int,
to_block: int) -> Iterable:
"""Get events using eth_getLoggers API.
This method is detached from any contract instance.
This is a stateless method, as opposed to createFilter.
It can be safely called against nodes which do not provide `eth_newFilter` API, like Infura.
"""
if from_block is None:
raise TypeError(
"Missing mandatory keyword argument to getLoggers: fromBlock")
# Currently no way to poke this using a public Web3.py API.
# This will return raw underlying ABI JSON object for the event
abi = event._get_event_abi()
# Depending on the Solidity version used to compile
# the contract that uses the ABI,
# it might have Solidity ABI encoding v1 or v2.
# We just assume the default that you set on Web3 object here.
# More information here https://eth-abi.readthedocs.io/en/latest/index.html
codec: ABICodec = web3.codec
# Here we need to poke a bit into Web3 internals, as this
# functionality is not exposed by default.
# Construct JSON-RPC raw filter presentation based on human readable Python descriptions
# Namely, convert event names to their keccak signatures
# More information here:
# https://github.com/ethereum/web3.py/blob/e176ce0793dafdd0573acc8d4b76425b6eb604ca/web3/_utils/filters.py#L71
data_filter_set, event_filter_params = construct_event_filter_params(
abi,
codec,
address=argument_filters.get("address"),
argument_filters=argument_filters,
fromBlock=from_block,
toBlock=to_block,
)
logger.debug("Querying eth_getLoggers with the following parameters: %s",
event_filter_params)
# Call JSON-RPC API on your Ethereum node.
# get_logs() returns raw AttributedDict entries
logs = web3.eth.getLogs(event_filter_params)
# Convert raw binary data to Python proxy objects as described by ABI
all_events = []
for log in logs:
# Convert raw JSON-RPC log result to human readable event by using ABI data
# More information how processLog works here
# https://github.com/ethereum/web3.py/blob/fbaf1ad11b0c7fac09ba34baff2c256cffe0a148/web3/_utils/events.py#L200
evt = get_event_data(codec, abi, log)
# Note: This was originally yield,
# but deferring the timeout exception caused the throttle logic not to work
all_events.append(evt)
return all_events
def from_event(cls, event: dict):
assert(isinstance(event, dict))
topics = event.get('topics')
if topics and topics[0] == HexBytes('0x0bcc4c97732e47d9946f229edb95f5b6323f601300e4690de719993f3c371129'):
log_fill_abi = [abi for abi in ZrxExchange.abi if abi.get('name') == 'LogFill'][0]
event_data = get_event_data(log_fill_abi, event)
return LogFill(event_data)
def from_event(cls, event: dict):
assert(isinstance(event, dict))
topics = event.get('topics')
if topics and topics[0] == HexBytes('0x3383e3357c77fd2e3a4b30deea81179bc70a795d053d14d5b7f2f01d0fd4596f'):
log_take_abi = [abi for abi in SimpleMarket.abi if abi.get('name') == 'LogTake'][0]
event_data = get_event_data(log_take_abi, event)
return LogTake(event_data)
def createFilter(
self, *, # PEP 3102
argument_filters=None,
fromBlock=None,
toBlock="latest",
address=None,
topics=None):
"""
Create filter object that tracks logs emitted by this contract event.
:param filter_params: other parameters to limit the events
"""
if fromBlock is None:
raise TypeError("Missing mandatory keyword argument to createFilter: fromBlock")
if argument_filters is None:
argument_filters = dict()
_filters = dict(**argument_filters)
event_abi = self._get_event_abi()
check_for_forbidden_api_filter_arguments(event_abi, _filters)
_, event_filter_params = construct_event_filter_params(
self._get_event_abi(),
self.web3.codec,
contract_address=self.address,
argument_filters=_filters,
fromBlock=fromBlock,
toBlock=toBlock,
address=address,
topics=topics,
)
filter_builder = EventFilterBuilder(event_abi, self.web3.codec)
filter_builder.address = event_filter_params.get('address')
filter_builder.fromBlock = event_filter_params.get('fromBlock')
filter_builder.toBlock = event_filter_params.get('toBlock')
match_any_vals = {
arg: value for arg, value in _filters.items()
if not is_array_type(filter_builder.args[arg].arg_type) and is_list_like(value)
}
for arg, value in match_any_vals.items():
filter_builder.args[arg].match_any(*value)
match_single_vals = {
arg: value for arg, value in _filters.items()
if not is_array_type(filter_builder.args[arg].arg_type) and not is_list_like(value)
}
for arg, value in match_single_vals.items():
filter_builder.args[arg].match_single(value)
log_filter = filter_builder.deploy(self.web3)
log_filter.log_entry_formatter = get_event_data(self.web3.codec, self._get_event_abi())
log_filter.builder = filter_builder
return log_filter
def parse_event(self, event):
signature = Web3.toHex(event['topics'][0])
codec = ABICodec(default_registry)
if signature == "0xdf7b5cd0ee6547c7389d2ac00ee0c1cd3439542399d6c8c520cc69c7409c0990":
event_data = get_event_data(codec, self.start_auction_abi, event)
return EnglishCollateralAuctionHouse.StartAuctionLog(event_data)
elif signature == "0xd87c815d5a67c2e130ad04b714d87a6fb69d5a6df0dbb0f1639cd9fe292201f9":
event_data = get_event_data(codec, self.increase_bid_size_abi,
event)
return EnglishCollateralAuctionHouse.IncreaseBidSizeLog(event_data)
elif signature == "0x8c63feacc784a7f735e454365ba433f17d17293b02c57d98dad113977dbf0f13":
event_data = get_event_data(codec, self.decrease_sold_amount_abi,
event)
return EnglishCollateralAuctionHouse.DecreaseSoldAmountLog(
event_data)
elif signature == "0x03af424b0e12d91ea31fe7f2c199fc02c9ede38f9aa1bdc019a8087b41445f7a":
event_data = get_event_data(codec, self.settle_auction_abi, event)
return EnglishCollateralAuctionHouse.SettleAuctionLog(event_data)
def decode_log_with_fallback(abis_to_try, log):
for abi in abis_to_try:
try:
log_with_replaced_topic = deepcopy(log)
log_with_replaced_topic['topics'][0] = event_abi_to_log_topic(abi)
return get_event_data(w3.codec, abi, log_with_replaced_topic)
except DecodingError:
logger.debug('trying fallback log decoder')
raise DecodingError('could not decode log')
def createFilter(
self, *, # PEP 3102
argument_filters=None,
fromBlock=None,
toBlock="latest",
address=None,
topics=None):
"""
Create filter object that tracks logs emitted by this contract event.
:param filter_params: other parameters to limit the events
"""
if fromBlock is None:
raise TypeError("Missing mandatory keyword argument to createFilter: fromBlock")
if argument_filters is None:
argument_filters = dict()
_filters = dict(**argument_filters)
event_abi = self._get_event_abi()
check_for_forbidden_api_filter_arguments(event_abi, _filters)
_, event_filter_params = construct_event_filter_params(
self._get_event_abi(),
contract_address=self.address,
argument_filters=_filters,
fromBlock=fromBlock,
toBlock=toBlock,
address=address,
topics=topics,
)
filter_builder = EventFilterBuilder(event_abi)
filter_builder.address = event_filter_params.get('address')
filter_builder.fromBlock = event_filter_params.get('fromBlock')
filter_builder.toBlock = event_filter_params.get('toBlock')
match_any_vals = {
arg: value for arg, value in _filters.items()
if not is_array_type(filter_builder.args[arg].arg_type) and is_list_like(value)
}
for arg, value in match_any_vals.items():
filter_builder.args[arg].match_any(*value)
match_single_vals = {
arg: value for arg, value in _filters.items()
if not is_array_type(filter_builder.args[arg].arg_type) and not is_list_like(value)
}
for arg, value in match_single_vals.items():
filter_builder.args[arg].match_single(value)
log_filter = filter_builder.deploy(self.web3)
log_filter.log_entry_formatter = get_event_data(self._get_event_abi())
log_filter.builder = filter_builder
return log_filter
def prepare(tx):
tx = get_event_data(ABI, tx)
return dict(
network='ethereum',
direction='in' if tx.args['from'] == ZERO_ADDRESS else 'out',
tx=encode_hex(tx.transactionHash),
value=Decimal(tx.args.value) / 10**8,
block=tx.blockNumber,
ts=timestamp(tx.blockNumber),
)
def from_receipt(cls, receipt: Receipt):
assert(isinstance(receipt, Receipt))
if receipt.logs is not None:
for log in receipt.logs:
if len(log['topics']) > 0 and log['topics'][0] == HexBytes('0x773ff502687307abfa024ac9f62f9752a0d210dac2ffd9a29e38e12e2ea82c82'):
log_make_abi = [abi for abi in SimpleMarket.abi if abi.get('name') == 'LogMake'][0]
event_data = get_event_data(log_make_abi, log)
yield LogMake(event_data)
def __decode_event(self, log, abi):
if isinstance(log["topics"][0], str):
log["topics"][0] = decode_hex(log["topics"][0])
elif isinstance(log["topics"][0], int):
log["topics"][0] = decode_hex(hex(log["topics"][0]))
event_id = log["topics"][0]
events = filter_by_type("event", abi)
topic_to_event_abi = {event_abi_to_log_topic(event_abi): event_abi for event_abi in events}
event_abi = topic_to_event_abi[event_id]
return get_event_data(event_abi, log)
def process_transaction(web3, tx_hash, block_gauge, token_flow_counter, fees_counter):
tx = web3.eth.getTransaction(tx_hash)
tx_logs = web3.eth.getTransactionReceipt(tx_hash).logs
block_number = tx.blockNumber
block_timestamp = web3.eth.get_block(block_number)["timestamp"]
erc20_abi = json.load(open("interfaces/ERC20.json", "r"))
erc20 = web3.eth.contract(abi=erc20_abi)
erc20_transfer_abi = erc20.events.Transfer._get_event_abi()
tokens = {
transfer: 0
for transfer in [
"ren_minted",
"ren_received",
"ren_bought",
"ren_burned",
"ren_sent",
"wbtc_received",
"wbtc_sent",
"fee_badger",
"fee_renvm",
]
}
for log in tx_logs:
try:
event_data = get_event_data(web3.codec, erc20_transfer_abi, log)
tokens = update_tokens(tx_hash, event_data, tokens)
except MismatchedABI: # not ERC20 transfer, so skip
continue
balances = calc_balances(tokens)
# update counters
block_gauge.labels("block_number").set(block_number)
block_gauge.labels("block_timestamp").set(block_timestamp)
token_flow_counter.labels("BTC", "mint", "in").inc(balances["btc_in"])
token_flow_counter.labels("BTC", "burn", "out").inc(balances["btc_out"])
token_flow_counter.labels("WBTC", "burn", "in").inc(balances["wbtc_received"])
token_flow_counter.labels("WBTC", "mint", "out").inc(balances["wbtc_sent"])
token_flow_counter.labels("renBTC", "burn", "in").inc(balances["ren_received"])
token_flow_counter.labels("renBTC", "mint", "out").inc(balances["ren_sent"])
fees_counter.labels("Badger DAO").inc(balances["fee_badger_dao"])
fees_counter.labels("Badger Bridge Team").inc(balances["fee_badger_bridge"])
fees_counter.labels("RenVM Darknodes").inc(balances["fee_darknodes"])
logger.info(
f"Processed event: block timestamp {block_timestamp} block number {block_number}, hash {tx_hash}"
)
return tokens, balances
def from_event(cls, event: AttributeDict, contract_abi: list):
assert isinstance(event, AttributeDict)
assert isinstance(contract_abi, list)
log_note_abi = [abi for abi in contract_abi if abi.get('name') == 'LogNote'][0]
try:
codec = ABICodec(default_registry)
event_data = get_event_data(codec, log_note_abi, event)
return LogNote(event_data)
except ValueError:
# event is not a LogNote
return None
def from_event(cls, event: dict):
assert isinstance(event, dict)
topics = event.get('topics')
if topics and topics[0] == HexBytes('0x99b5620489b6ef926d4518936cfec15d305452712b88bd59da2d9c10fb0953e8'):
log_bite_abi = [abi for abi in Cat.abi if abi.get('name') == 'Bite'][0]
codec = ABICodec(default_registry)
event_data = get_event_data(codec, log_bite_abi, event)
return Cat.LogBite(event_data)
else:
logging.warning(f'[from_event] Invalid topic in {event}')
def build_filter(self):
builder = EventFilterBuilder(
self._get_event_abi(),
formatter=get_event_data(self._get_event_abi()))
builder.address = self.address
return builder