def validate_timestamp(self, blockchain):
timestamp = self.timestamp
validate_not_none(f'{self.humanized_class_name} timestamp', timestamp)
validate_type(f'{self.humanized_class_name} timestamp', timestamp,
datetime)
validate_is_none(f'{self.humanized_class_name} timestamp timezone',
timestamp.tzinfo)
block_number = self.block_number
assert block_number is not None
if block_number > 0:
prev_block_number = block_number - 1
prev_block = blockchain.get_block_by_number(prev_block_number)
if prev_block is None:
logger.debug('Partial blockchain detected')
blockchain_state = blockchain.get_closest_blockchain_state_snapshot(
block_number)
validate_not_none('Closest blockchain state', blockchain_state)
if blockchain_state.is_initial():
raise ValidationError(
'Unexpected initial account root file found')
validate_exact_value('Blockchain state last block number',
blockchain_state.last_block_number,
prev_block_number)
assert blockchain_state.last_block_timestamp
min_timestamp = blockchain_state.last_block_timestamp
else:
min_timestamp = prev_block.message.timestamp
validate_gt_value(f'{self.humanized_class_name} timestamp',
timestamp, min_timestamp)
def validate_next_block_identifier(self, is_initial):
if is_initial:
validate_is_none(
f'Initial {self.humanized_class_name} next_block_identifier',
self.next_block_identifier)
else:
validate_type(f'{self.humanized_class_name} next_block_identifier',
self.next_block_identifier, str)
def validate_last_block_number(self, is_initial):
if is_initial:
validate_is_none(
f'Initial {self.humanized_class_name} last_block_number',
self.last_block_number)
else:
validate_type(f'{self.humanized_class_name} last_block_number',
self.last_block_number, int)
validate_gte_value(
f'{self.humanized_class_name} last_block_number',
self.last_block_number, 0)
def validate_last_block_timestamp(self, is_initial):
timestamp = self.last_block_timestamp
if is_initial:
validate_is_none(
f'Initial {self.humanized_class_name} last_block_timestamp',
timestamp)
else:
validate_not_none(
f'{self.humanized_class_name} last_block_timestamp', timestamp)
validate_type(f'{self.humanized_class_name} last_block_timestamp',
timestamp, datetime)
validate_is_none(
f'{self.humanized_class_name} last_block_timestamp timezone',
timestamp.tzinfo)