def do_test_bloom(test_logs):
"""
The logs sections is a mapping between the blooms and their corresponding logentries.
Each logentry has the format:
address: The address of the logentry.
data: The data of the logentry.
topics: The topics of the logentry, given as an array of values.
"""
for data in test_logs:
address = data['address']
# Test via bloom
b = bloom.bloom_insert(0, decode_hex(address))
for t in data['topics']:
b = bloom.bloom_insert(b, decode_hex(t))
# Test via Log
topics = [decode_int_from_hex(x) for x in data['topics']]
log = pb.Log(decode_hex(address), topics, '')
log_bloom = bloom.b64(bloom.bloom_from_list(log.bloomables()))
assert encode_hex(log_bloom) == encode_hex_from_int(b)
assert str_to_bytes(data['bloom']) == encode_hex(log_bloom)
def _get_logs(self, topics, event_name=None):
"""
Get logs of the events that occur.
topics: a list of topics to search based on
event_name: the name of the event
"""
# set topic to the ID if the name is specified
if event_name == None:
event_topic = None
else:
event_topic = self._get_event_id_by_name(event_name)
# add the event type to the topics
topics = [event_topic] + topics
# encode topics to be sent to the eth client
topics = [encode_api_data(topic) for topic in topics]
# gets logs from eth client
logs = ethclient.get_logs(
from_block='earliest',
address=self.address,
topics=topics,
)
# decode logs using the ABI
decoded_logs = []
for log in logs:
logobj = processblock.Log(
log['address'][2:],
[big_endian_to_int(decode_hex(topic[2:])) for topic in log['topics']],
decode_hex(log['data'][2:])
)
decoded_log = self._contracttranslator.listen(logobj, noprint=True)
decoded_logs.append(decoded_log)
return decoded_logs
def _get_logs(self, topics, event_name=None):
"""
Get logs (events).
topics: a list of topics to search for.
event_name: the name of the event.
"""
# Set the event topic to the event ID if the event name is specified.
if event_name is None:
event_topic = None
else:
event_topic = self._get_event_id_by_name(event_name)
# Prepent the event type to the topics.
topics = [event_topic] + topics
# Encode topics to be sent to the Ethereum client.
topics = [encode_api_data(topic, padding=32) for topic in topics]
# Get logs from Ethereum client.
logs = ethclient.get_logs(
from_block='earliest',
address=self.address,
topics=topics,
)
# Decode logs using the contract ABI.
decoded_logs = []
for log in logs:
logobj = processblock.Log(log['address'][2:], [
big_endian_to_int(decode_hex(topic[2:]))
for topic in log['topics']
], decode_hex(log['data'][2:]))
decoded_log = self._contracttranslator.listen(logobj, noprint=True)
decoded_logs.append(decoded_log)
return decoded_logs