def batch_pre_validate_blocks(
constants_dict: Dict,
blocks_pickled: Dict[bytes, bytes],
header_blocks_pickled: List[bytes],
transaction_generators: List[Optional[bytes]],
check_filter: bool,
expected_difficulty: List[uint64],
expected_sub_slot_iters: List[uint64],
validate_transactions: bool,
) -> List[bytes]:
assert len(header_blocks_pickled) == len(transaction_generators)
blocks = {}
for k, v in blocks_pickled.items():
blocks[k] = BlockRecord.from_bytes(v)
results: List[PreValidationResult] = []
constants: ConsensusConstants = dataclass_from_dict(
ConsensusConstants, constants_dict)
for i in range(len(header_blocks_pickled)):
try:
header_block: HeaderBlock = HeaderBlock.from_bytes(
header_blocks_pickled[i])
generator: Optional[bytes] = transaction_generators[i]
required_iters, error = validate_finished_header_block(
constants,
BlockCache(blocks),
header_block,
check_filter,
expected_difficulty[i],
expected_sub_slot_iters[i],
)
cost_result: Optional[CostResult] = None
error_int: Optional[uint16] = None
if error is not None:
error_int = uint16(error.code.value)
if constants_dict["NETWORK_TYPE"] == NetworkType.MAINNET.value:
cost_result = None
else:
if not error and generator is not None and validate_transactions:
cost_result = calculate_cost_of_program(
SerializedProgram.from_bytes(generator),
constants.CLVM_COST_RATIO_CONSTANT)
results.append(
PreValidationResult(error_int, required_iters, cost_result))
except Exception:
error_stack = traceback.format_exc()
log.error(f"Exception: {error_stack}")
results.append(
PreValidationResult(uint16(Err.UNKNOWN.value), None, None))
return [bytes(r) for r in results]
async def receive_block(
self,
header_block_record: HeaderBlockRecord,
pre_validation_result: Optional[PreValidationResult] = None,
trusted: bool = False,
fork_point_with_peak: Optional[uint32] = None,
) -> Tuple[ReceiveBlockResult, Optional[Err], Optional[uint32]]:
"""
Adds a new block into the blockchain, if it's valid and connected to the current
blockchain, regardless of whether it is the child of a head, or another block.
Returns a header if block is added to head. Returns an error if the block is
invalid. Also returns the fork height, in the case of a new peak.
"""
block = header_block_record.header
genesis: bool = block.height == 0
if self.contains_block(block.header_hash):
return ReceiveBlockResult.ALREADY_HAVE_BLOCK, None, None
if not self.contains_block(block.prev_header_hash) and not genesis:
return (
ReceiveBlockResult.DISCONNECTED_BLOCK,
Err.INVALID_PREV_BLOCK_HASH,
None,
)
if block.height == 0:
prev_b: Optional[BlockRecord] = None
else:
prev_b = self.block_record(block.prev_header_hash)
sub_slot_iters, difficulty = get_next_sub_slot_iters_and_difficulty(
self.constants,
len(block.finished_sub_slots) > 0, prev_b, self)
if trusted is False and pre_validation_result is None:
required_iters, error = validate_finished_header_block(
self.constants, self, block, False, difficulty, sub_slot_iters)
elif trusted:
unfinished_header_block = UnfinishedHeaderBlock(
block.finished_sub_slots,
block.reward_chain_block.get_unfinished(),
block.challenge_chain_sp_proof,
block.reward_chain_sp_proof,
block.foliage,
block.foliage_transaction_block,
block.transactions_filter,
)
required_iters, val_error = validate_unfinished_header_block(
self.constants, self, unfinished_header_block, False,
difficulty, sub_slot_iters, False, True)
error = ValidationError(
Err(val_error)) if val_error is not None else None
else:
assert pre_validation_result is not None
required_iters = pre_validation_result.required_iters
error = (ValidationError(Err(pre_validation_result.error))
if pre_validation_result.error is not None else None)
if error is not None:
return ReceiveBlockResult.INVALID_BLOCK, error.code, None
assert required_iters is not None
block_record = block_to_block_record(
self.constants,
self,
required_iters,
None,
block,
)
# Always add the block to the database
async with self.block_store.db_wrapper.lock:
try:
await self.block_store.db_wrapper.begin_transaction()
await self.block_store.add_block_record(
header_block_record, block_record)
self.add_block_record(block_record)
self.clean_block_record(block_record.height -
self.constants.BLOCKS_CACHE_SIZE)
fork_height: Optional[uint32] = await self._reconsider_peak(
block_record, genesis, fork_point_with_peak)
await self.block_store.db_wrapper.commit_transaction()
except BaseException as e:
self.log.error(f"Error during db transaction: {e}")
await self.block_store.db_wrapper.rollback_transaction()
raise
if fork_height is not None:
self.log.info(
f"💰 Updated wallet peak to height {block_record.height}, weight {block_record.weight}, "
)
return ReceiveBlockResult.NEW_PEAK, None, fork_height
else:
return ReceiveBlockResult.ADDED_AS_ORPHAN, None, None
async def receive_block(
self,
block: HeaderBlock) -> Tuple[ReceiveBlockResult, Optional[Err]]:
if self.contains_block(block.header_hash):
return ReceiveBlockResult.ALREADY_HAVE_BLOCK, None
if not self.contains_block(
block.prev_header_hash) and block.height > 0:
return ReceiveBlockResult.DISCONNECTED_BLOCK, None
if (len(block.finished_sub_slots) > 0 and
block.finished_sub_slots[0].challenge_chain.new_sub_slot_iters
is not None):
assert block.finished_sub_slots[
0].challenge_chain.new_difficulty is not None # They both change together
sub_slot_iters: uint64 = block.finished_sub_slots[
0].challenge_chain.new_sub_slot_iters
difficulty: uint64 = block.finished_sub_slots[
0].challenge_chain.new_difficulty
else:
sub_slot_iters = self._sub_slot_iters
difficulty = self._difficulty
required_iters, error = validate_finished_header_block(
self.constants, self, block, False, difficulty, sub_slot_iters,
False)
if error is not None:
return ReceiveBlockResult.INVALID_BLOCK, error.code
if required_iters is None:
return ReceiveBlockResult.INVALID_BLOCK, Err.INVALID_POSPACE
block_record: BlockRecord = block_to_block_record(
self.constants, self, required_iters, None, block, sub_slot_iters)
self.add_block_record(block_record)
if self._peak is None:
if block_record.is_transaction_block:
latest_timestamp = block_record.timestamp
else:
latest_timestamp = None
self._height_to_hash[
block_record.height] = block_record.header_hash
await self.set_peak_block(block, latest_timestamp)
return ReceiveBlockResult.NEW_PEAK, None
elif block_record.weight > self._peak.weight:
if block_record.prev_hash == self._peak.header_hash:
fork_height: int = self._peak.height
else:
fork_height = find_fork_point_in_chain(self, block_record,
self._peak)
await self._rollback_to_height(fork_height)
curr_record: BlockRecord = block_record
latest_timestamp = self._latest_timestamp
while curr_record.height > fork_height:
self._height_to_hash[
curr_record.height] = curr_record.header_hash
if curr_record.timestamp is not None and curr_record.timestamp > latest_timestamp:
latest_timestamp = curr_record.timestamp
if curr_record.height == 0:
break
curr_record = self.block_record(curr_record.prev_hash)
self._sub_slot_iters = block_record.sub_slot_iters
self._difficulty = uint64(
block_record.weight -
self.block_record(block_record.prev_hash).weight)
await self.set_peak_block(block, latest_timestamp)
self.clean_block_records()
return ReceiveBlockResult.NEW_PEAK, None
return ReceiveBlockResult.ADDED_AS_ORPHAN, None
async def receive_block(
self,
block: FullBlock,
pre_validation_result: Optional[PreValidationResult] = None,
fork_point_with_peak: Optional[uint32] = None,
summaries_to_check: List[SubEpochSummary] = None, # passed only on long sync
) -> Tuple[ReceiveBlockResult, Optional[Err], Optional[uint32]]:
"""
This method must be called under the blockchain lock
Adds a new block into the blockchain, if it's valid and connected to the current
blockchain, regardless of whether it is the child of a head, or another block.
Returns a header if block is added to head. Returns an error if the block is
invalid. Also returns the fork height, in the case of a new peak.
"""
genesis: bool = block.height == 0
if self.contains_block(block.header_hash):
return ReceiveBlockResult.ALREADY_HAVE_BLOCK, None, None
if not self.contains_block(block.prev_header_hash) and not genesis:
return (
ReceiveBlockResult.DISCONNECTED_BLOCK,
Err.INVALID_PREV_BLOCK_HASH,
None,
)
if not genesis and (self.block_record(block.prev_header_hash).height + 1) != block.height:
return ReceiveBlockResult.INVALID_BLOCK, Err.INVALID_HEIGHT, None
npc_result: Optional[NPCResult] = None
if pre_validation_result is None:
if block.height == 0:
prev_b: Optional[BlockRecord] = None
else:
prev_b = self.block_record(block.prev_header_hash)
sub_slot_iters, difficulty = get_next_sub_slot_iters_and_difficulty(
self.constants, len(block.finished_sub_slots) > 0, prev_b, self
)
if block.is_transaction_block():
if block.transactions_generator is not None:
try:
block_generator: Optional[BlockGenerator] = await self.get_block_generator(block)
except ValueError:
return ReceiveBlockResult.INVALID_BLOCK, Err.GENERATOR_REF_HAS_NO_GENERATOR, None
assert block_generator is not None and block.transactions_info is not None
npc_result = get_name_puzzle_conditions(
block_generator, min(self.constants.MAX_BLOCK_COST_CLVM, block.transactions_info.cost), False
)
removals, tx_additions = tx_removals_and_additions(npc_result.npc_list)
else:
removals, tx_additions = [], []
header_block = get_block_header(block, tx_additions, removals)
else:
npc_result = None
header_block = get_block_header(block, [], [])
required_iters, error = validate_finished_header_block(
self.constants,
self,
header_block,
False,
difficulty,
sub_slot_iters,
)
if error is not None:
return ReceiveBlockResult.INVALID_BLOCK, error.code, None
else:
npc_result = pre_validation_result.npc_result
required_iters = pre_validation_result.required_iters
assert pre_validation_result.error is None
assert required_iters is not None
error_code, _ = await validate_block_body(
self.constants,
self,
self.block_store,
self.coin_store,
self.get_peak(),
block,
block.height,
npc_result,
fork_point_with_peak,
self.get_block_generator,
)
if error_code is not None:
return ReceiveBlockResult.INVALID_BLOCK, error_code, None
block_record = block_to_block_record(
self.constants,
self,
required_iters,
block,
None,
)
# Always add the block to the database
async with self.block_store.db_wrapper.lock:
try:
# Perform the DB operations to update the state, and rollback if something goes wrong
await self.block_store.db_wrapper.begin_transaction()
await self.block_store.add_full_block(block, block_record)
fork_height, peak_height, records = await self._reconsider_peak(
block_record, genesis, fork_point_with_peak, npc_result
)
await self.block_store.db_wrapper.commit_transaction()
# Then update the memory cache. It is important that this task is not cancelled and does not throw
self.add_block_record(block_record)
for fetched_block_record in records:
self.__height_to_hash[fetched_block_record.height] = fetched_block_record.header_hash
if fetched_block_record.sub_epoch_summary_included is not None:
self.__sub_epoch_summaries[
fetched_block_record.height
] = fetched_block_record.sub_epoch_summary_included
if peak_height is not None:
self._peak_height = peak_height
self.block_store.cache_block(block)
except BaseException:
await self.block_store.db_wrapper.rollback_transaction()
raise
if fork_height is not None:
return ReceiveBlockResult.NEW_PEAK, None, fork_height
else:
return ReceiveBlockResult.ADDED_AS_ORPHAN, None, None
def batch_pre_validate_blocks(
constants_dict: Dict,
blocks_pickled: Dict[bytes, bytes],
full_blocks_pickled: Optional[List[bytes]],
header_blocks_pickled: Optional[List[bytes]],
prev_transaction_generators: List[Optional[bytes]],
npc_results: Dict[uint32, bytes],
check_filter: bool,
expected_difficulty: List[uint64],
expected_sub_slot_iters: List[uint64],
) -> List[bytes]:
blocks = {}
for k, v in blocks_pickled.items():
blocks[k] = BlockRecord.from_bytes(v)
results: List[PreValidationResult] = []
constants: ConsensusConstants = dataclass_from_dict(
ConsensusConstants, constants_dict)
if full_blocks_pickled is not None and header_blocks_pickled is not None:
assert ValueError("Only one should be passed here")
if full_blocks_pickled is not None:
for i in range(len(full_blocks_pickled)):
try:
block: FullBlock = FullBlock.from_bytes(full_blocks_pickled[i])
tx_additions: List[Coin] = []
removals: List[bytes32] = []
npc_result: Optional[NPCResult] = None
if block.height in npc_results:
npc_result = NPCResult.from_bytes(
npc_results[block.height])
assert npc_result is not None
if npc_result.npc_list is not None:
removals, tx_additions = tx_removals_and_additions(
npc_result.npc_list)
else:
removals, tx_additions = [], []
if block.transactions_generator is not None and npc_result is None:
prev_generator_bytes = prev_transaction_generators[i]
assert prev_generator_bytes is not None
assert block.transactions_info is not None
block_generator: BlockGenerator = BlockGenerator.from_bytes(
prev_generator_bytes)
assert block_generator.program == block.transactions_generator
npc_result = get_name_puzzle_conditions(
block_generator,
min(constants.MAX_BLOCK_COST_CLVM,
block.transactions_info.cost), True)
removals, tx_additions = tx_removals_and_additions(
npc_result.npc_list)
header_block = get_block_header(block, tx_additions, removals)
required_iters, error = validate_finished_header_block(
constants,
BlockCache(blocks),
header_block,
check_filter,
expected_difficulty[i],
expected_sub_slot_iters[i],
)
error_int: Optional[uint16] = None
if error is not None:
error_int = uint16(error.code.value)
results.append(
PreValidationResult(error_int, required_iters, npc_result))
except Exception:
error_stack = traceback.format_exc()
log.error(f"Exception: {error_stack}")
results.append(
PreValidationResult(uint16(Err.UNKNOWN.value), None, None))
elif header_blocks_pickled is not None:
for i in range(len(header_blocks_pickled)):
try:
header_block = HeaderBlock.from_bytes(header_blocks_pickled[i])
required_iters, error = validate_finished_header_block(
constants,
BlockCache(blocks),
header_block,
check_filter,
expected_difficulty[i],
expected_sub_slot_iters[i],
)
error_int = None
if error is not None:
error_int = uint16(error.code.value)
results.append(
PreValidationResult(error_int, required_iters, None))
except Exception:
error_stack = traceback.format_exc()
log.error(f"Exception: {error_stack}")
results.append(
PreValidationResult(uint16(Err.UNKNOWN.value), None, None))
return [bytes(r) for r in results]
async def receive_block(
self,
block: FullBlock,
pre_validation_result: Optional[PreValidationResult] = None,
fork_point_with_peak: Optional[uint32] = None,
) -> Tuple[ReceiveBlockResult, Optional[Err], Optional[uint32]]:
"""
This method must be called under the blockchain lock
Adds a new block into the blockchain, if it's valid and connected to the current
blockchain, regardless of whether it is the child of a head, or another block.
Returns a header if block is added to head. Returns an error if the block is
invalid. Also returns the fork height, in the case of a new peak.
"""
genesis: bool = block.height == 0
if self.contains_block(block.header_hash):
return ReceiveBlockResult.ALREADY_HAVE_BLOCK, None, None
if not self.contains_block(block.prev_header_hash) and not genesis:
return (
ReceiveBlockResult.DISCONNECTED_BLOCK,
Err.INVALID_PREV_BLOCK_HASH,
None,
)
if not genesis and (self.block_record(block.prev_header_hash).height + 1) != block.height:
return ReceiveBlockResult.INVALID_BLOCK, Err.INVALID_HEIGHT, None
if pre_validation_result is None:
if block.height == 0:
prev_b: Optional[BlockRecord] = None
else:
prev_b = self.block_record(block.prev_header_hash)
sub_slot_iters, difficulty = get_next_sub_slot_iters_and_difficulty(
self.constants, len(block.finished_sub_slots) > 0, prev_b, self
)
required_iters, error = validate_finished_header_block(
self.constants,
self,
block.get_block_header(),
False,
difficulty,
sub_slot_iters,
)
if error is not None:
return ReceiveBlockResult.INVALID_BLOCK, error.code, None
else:
required_iters = pre_validation_result.required_iters
assert pre_validation_result.error is None
assert required_iters is not None
error_code, _ = await validate_block_body(
self.constants,
self,
self.block_store,
self.coin_store,
self.get_peak(),
block,
block.height,
pre_validation_result.cost_result if pre_validation_result is not None else None,
fork_point_with_peak,
)
if error_code is not None:
return ReceiveBlockResult.INVALID_BLOCK, error_code, None
block_record = block_to_block_record(
self.constants,
self,
required_iters,
block,
None,
)
# Always add the block to the database
async with self.block_store.db_wrapper.lock:
try:
await self.block_store.db_wrapper.begin_transaction()
await self.block_store.add_full_block(block, block_record)
fork_height, peak_height, records = await self._reconsider_peak(
block_record, genesis, fork_point_with_peak
)
await self.block_store.db_wrapper.commit_transaction()
self.add_block_record(block_record)
for fetched_block_record in records:
self.__height_to_hash[fetched_block_record.height] = fetched_block_record.header_hash
if fetched_block_record.sub_epoch_summary_included is not None:
self.__sub_epoch_summaries[
fetched_block_record.height
] = fetched_block_record.sub_epoch_summary_included
if peak_height is not None:
self._peak_height = peak_height
except BaseException:
await self.block_store.db_wrapper.rollback_transaction()
raise
if fork_height is not None:
return ReceiveBlockResult.NEW_PEAK, None, fork_height
else:
return ReceiveBlockResult.ADDED_AS_ORPHAN, None, None
async def receive_block(
self,
header_block_record: HeaderBlockRecord,
pre_validation_result: Optional[PreValidationResult] = None,
trusted: bool = False,
fork_point_with_peak: Optional[uint32] = None,
additional_coin_spends: List[CoinSpend] = None,
) -> Tuple[ReceiveBlockResult, Optional[Err], Optional[uint32]]:
"""
Adds a new block into the blockchain, if it's valid and connected to the current
blockchain, regardless of whether it is the child of a head, or another block.
Returns a header if block is added to head. Returns an error if the block is
invalid. Also returns the fork height, in the case of a new peak.
"""
if additional_coin_spends is None:
additional_coin_spends = []
block = header_block_record.header
genesis: bool = block.height == 0
if self.contains_block(block.header_hash):
return ReceiveBlockResult.ALREADY_HAVE_BLOCK, None, None
if not self.contains_block(block.prev_header_hash) and not genesis:
return (
ReceiveBlockResult.DISCONNECTED_BLOCK,
Err.INVALID_PREV_BLOCK_HASH,
None,
)
if block.height == 0:
prev_b: Optional[BlockRecord] = None
else:
prev_b = self.block_record(block.prev_header_hash)
sub_slot_iters, difficulty = get_next_sub_slot_iters_and_difficulty(
self.constants, len(block.finished_sub_slots) > 0, prev_b, self
)
if trusted is False and pre_validation_result is None:
required_iters, error = validate_finished_header_block(
self.constants, self, block, False, difficulty, sub_slot_iters
)
elif trusted:
unfinished_header_block = UnfinishedHeaderBlock(
block.finished_sub_slots,
block.reward_chain_block.get_unfinished(),
block.challenge_chain_sp_proof,
block.reward_chain_sp_proof,
block.foliage,
block.foliage_transaction_block,
block.transactions_filter,
)
required_iters, val_error = validate_unfinished_header_block(
self.constants, self, unfinished_header_block, False, difficulty, sub_slot_iters, False, True
)
error = val_error if val_error is not None else None
else:
assert pre_validation_result is not None
required_iters = pre_validation_result.required_iters
error = (
ValidationError(Err(pre_validation_result.error)) if pre_validation_result.error is not None else None
)
if error is not None:
return ReceiveBlockResult.INVALID_BLOCK, error.code, None
assert required_iters is not None
block_record = block_to_block_record(
self.constants,
self,
required_iters,
None,
block,
)
heights_changed: Set[Tuple[uint32, Optional[bytes32]]] = set()
# Always add the block to the database
async with self.wallet_state_manager_lock:
async with self.block_store.db_wrapper.lock:
try:
await self.block_store.db_wrapper.begin_transaction()
await self.block_store.add_block_record(header_block_record, block_record, additional_coin_spends)
self.add_block_record(block_record)
self.clean_block_record(block_record.height - self.constants.BLOCKS_CACHE_SIZE)
fork_height, records_to_add = await self._reconsider_peak(
block_record, genesis, fork_point_with_peak, additional_coin_spends, heights_changed
)
for record in records_to_add:
if record.sub_epoch_summary_included is not None:
self.__sub_epoch_summaries[record.height] = record.sub_epoch_summary_included
await self.block_store.db_wrapper.commit_transaction()
except BaseException as e:
self.log.error(f"Error during db transaction: {e}")
if self.block_store.db_wrapper.db._connection is not None:
await self.block_store.db_wrapper.rollback_transaction()
self.remove_block_record(block_record.header_hash)
self.block_store.rollback_cache_block(block_record.header_hash)
await self.coin_store.rebuild_wallet_cache()
await self.tx_store.rebuild_tx_cache()
await self.pool_store.rebuild_cache()
for height, replaced in heights_changed:
# If it was replaced change back to the previous value otherwise pop the change
if replaced is not None:
self.__height_to_hash[height] = replaced
else:
self.__height_to_hash.pop(height)
raise
if fork_height is not None:
self.log.info(f"💰 Updated wallet peak to height {block_record.height}, weight {block_record.weight}, ")
return ReceiveBlockResult.NEW_PEAK, None, fork_height
else:
return ReceiveBlockResult.ADDED_AS_ORPHAN, None, None
def batch_pre_validate_blocks(
constants_dict: Dict,
blocks_pickled: Dict[bytes, bytes],
full_blocks_pickled: Optional[List[bytes]],
header_blocks_pickled: Optional[List[bytes]],
prev_transaction_generators: List[Optional[bytes]],
npc_results: Dict[uint32, bytes],
check_filter: bool,
expected_difficulty: List[uint64],
expected_sub_slot_iters: List[uint64],
validate_signatures: bool,
) -> List[bytes]:
blocks: Dict[bytes, BlockRecord] = {}
for k, v in blocks_pickled.items():
blocks[k] = BlockRecord.from_bytes(v)
results: List[PreValidationResult] = []
constants: ConsensusConstants = dataclass_from_dict(
ConsensusConstants, constants_dict)
if full_blocks_pickled is not None and header_blocks_pickled is not None:
assert ValueError("Only one should be passed here")
# In this case, we are validating full blocks, not headers
if full_blocks_pickled is not None:
for i in range(len(full_blocks_pickled)):
try:
block: FullBlock = FullBlock.from_bytes(full_blocks_pickled[i])
tx_additions: List[Coin] = []
removals: List[bytes32] = []
npc_result: Optional[NPCResult] = None
if block.height in npc_results:
npc_result = NPCResult.from_bytes(
npc_results[block.height])
assert npc_result is not None
if npc_result.npc_list is not None:
removals, tx_additions = tx_removals_and_additions(
npc_result.npc_list)
else:
removals, tx_additions = [], []
if block.transactions_generator is not None and npc_result is None:
prev_generator_bytes = prev_transaction_generators[i]
assert prev_generator_bytes is not None
assert block.transactions_info is not None
block_generator: BlockGenerator = BlockGenerator.from_bytes(
prev_generator_bytes)
assert block_generator.program == block.transactions_generator
npc_result = get_name_puzzle_conditions(
block_generator,
min(constants.MAX_BLOCK_COST_CLVM,
block.transactions_info.cost),
cost_per_byte=constants.COST_PER_BYTE,
mempool_mode=False,
height=block.height,
)
removals, tx_additions = tx_removals_and_additions(
npc_result.npc_list)
if npc_result is not None and npc_result.error is not None:
results.append(
PreValidationResult(uint16(npc_result.error), None,
npc_result, False))
continue
header_block = get_block_header(block, tx_additions, removals)
# TODO: address hint error and remove ignore
# error: Argument 1 to "BlockCache" has incompatible type "Dict[bytes, BlockRecord]"; expected
# "Dict[bytes32, BlockRecord]" [arg-type]
required_iters, error = validate_finished_header_block(
constants,
BlockCache(blocks), # type: ignore[arg-type]
header_block,
check_filter,
expected_difficulty[i],
expected_sub_slot_iters[i],
)
error_int: Optional[uint16] = None
if error is not None:
error_int = uint16(error.code.value)
successfully_validated_signatures = False
# If we failed CLVM, no need to validate signature, the block is already invalid
if error_int is None:
# If this is False, it means either we don't have a signature (not a tx block) or we have an invalid
# signature (which also puts in an error) or we didn't validate the signature because we want to
# validate it later. receive_block will attempt to validate the signature later.
if validate_signatures:
if npc_result is not None and block.transactions_info is not None:
pairs_pks, pairs_msgs = pkm_pairs(
npc_result.npc_list,
constants.AGG_SIG_ME_ADDITIONAL_DATA)
pks_objects: List[G1Element] = [
G1Element.from_bytes(pk) for pk in pairs_pks
]
if not AugSchemeMPL.aggregate_verify(
pks_objects, pairs_msgs, block.
transactions_info.aggregated_signature):
error_int = uint16(
Err.BAD_AGGREGATE_SIGNATURE.value)
else:
successfully_validated_signatures = True
results.append(
PreValidationResult(error_int, required_iters, npc_result,
successfully_validated_signatures))
except Exception:
error_stack = traceback.format_exc()
log.error(f"Exception: {error_stack}")
results.append(
PreValidationResult(uint16(Err.UNKNOWN.value), None, None,
False))
# In this case, we are validating header blocks
elif header_blocks_pickled is not None:
for i in range(len(header_blocks_pickled)):
try:
header_block = HeaderBlock.from_bytes(header_blocks_pickled[i])
# TODO: address hint error and remove ignore
# error: Argument 1 to "BlockCache" has incompatible type "Dict[bytes, BlockRecord]"; expected
# "Dict[bytes32, BlockRecord]" [arg-type]
required_iters, error = validate_finished_header_block(
constants,
BlockCache(blocks), # type: ignore[arg-type]
header_block,
check_filter,
expected_difficulty[i],
expected_sub_slot_iters[i],
)
error_int = None
if error is not None:
error_int = uint16(error.code.value)
results.append(
PreValidationResult(error_int, required_iters, None,
False))
except Exception:
error_stack = traceback.format_exc()
log.error(f"Exception: {error_stack}")
results.append(
PreValidationResult(uint16(Err.UNKNOWN.value), None, None,
False))
return [bytes(r) for r in results]
