def delete_chronological_block_window(self, timestamp):
validate_uint256(timestamp, title='timestamp')
if timestamp % TIME_BETWEEN_HEAD_HASH_SAVE != 0:
raise InvalidHeadRootTimestamp("Can only save or load chronological block for timestamps in increments of {} seconds.".format(TIME_BETWEEN_HEAD_HASH_SAVE))
self.logger.debug("deleting chronological block window for timestamp {}".format(timestamp))
chronological_window_lookup_key = SchemaV1.make_chronological_window_lookup_key(timestamp)
try:
del(self.db[chronological_window_lookup_key])
except KeyError:
pass
def save_chronological_block_window(self, data, timestamp):
validate_uint256(timestamp, title='timestamp')
if timestamp % TIME_BETWEEN_HEAD_HASH_SAVE != 0:
raise InvalidHeadRootTimestamp("Can only save or load chronological block for timestamps in increments of {} seconds.".format(TIME_BETWEEN_HEAD_HASH_SAVE))
chronological_window_lookup_key = SchemaV1.make_chronological_window_lookup_key(timestamp)
encoded_data = rlp.encode(data,sedes=rlp.sedes.FCountableList(rlp.sedes.FList([f_big_endian_int, hash32])))
self.db.set(
chronological_window_lookup_key,
encoded_data,
)
def load_chronological_block_window(self, timestamp: Timestamp) -> Optional[List[Union[int, Hash32]]]:
validate_uint256(timestamp, title='timestamp')
if timestamp % TIME_BETWEEN_HEAD_HASH_SAVE != 0:
raise InvalidHeadRootTimestamp("Can only save or load chronological block for timestamps in increments of {} seconds.".format(TIME_BETWEEN_HEAD_HASH_SAVE))
chronological_window_lookup_key = SchemaV1.make_chronological_window_lookup_key(timestamp)
try:
data = rlp.decode(self.db[chronological_window_lookup_key], sedes=rlp.sedes.FCountableList(rlp.sedes.FList([f_big_endian_int, hash32])), use_list = True)
data.sort()
return data
except KeyError:
return None