async def get_block_records_close_to_peak(
self, blocks_n: int
) -> Tuple[Dict[bytes32, BlockRecord], Optional[bytes32]]:
"""
Returns a dictionary with all blocks that have height >= peak height - blocks_n, as well as the
peak header hash.
"""
peak = await self.get_peak()
if peak is None:
return {}, None
ret: Dict[bytes32, BlockRecord] = {}
if self.db_wrapper.db_version == 2:
async with self.db.execute(
"SELECT header_hash, block_record FROM full_blocks WHERE height >= ?",
(peak[1] - blocks_n,),
) as cursor:
for row in await cursor.fetchall():
header_hash = bytes32(row[0])
ret[header_hash] = BlockRecord.from_bytes(row[1])
else:
formatted_str = f"SELECT header_hash, block from block_records WHERE height >= {peak[1] - blocks_n}"
async with self.db.execute(formatted_str) as cursor:
for row in await cursor.fetchall():
header_hash = bytes32(self.maybe_from_hex(row[0]))
ret[header_hash] = BlockRecord.from_bytes(row[1])
return ret, peak[0]
async def get_block_records_in_range(
self,
start: int,
stop: int,
) -> Dict[bytes32, BlockRecord]:
"""
Returns a dictionary with all blocks in range between start and stop
if present.
"""
ret: Dict[bytes32, BlockRecord] = {}
if self.db_wrapper.db_version == 2:
async with self.db.execute(
"SELECT header_hash, block_record FROM full_blocks WHERE height >= ? AND height <= ?",
(start, stop),
) as cursor:
for row in await cursor.fetchall():
header_hash = bytes32(row[0])
ret[header_hash] = BlockRecord.from_bytes(row[1])
else:
formatted_str = f"SELECT header_hash, block from block_records WHERE height >= {start} and height <= {stop}"
async with await self.db.execute(formatted_str) as cursor:
for row in await cursor.fetchall():
header_hash = bytes32(self.maybe_from_hex(row[0]))
ret[header_hash] = BlockRecord.from_bytes(row[1])
return ret
async def get_block_records_by_hash(self, header_hashes: List[bytes32]):
"""
Returns a list of Block Records, ordered by the same order in which header_hashes are passed in.
Throws an exception if the blocks are not present
"""
if len(header_hashes) == 0:
return []
all_blocks: Dict[bytes32, BlockRecord] = {}
if self.db_wrapper.db_version == 2:
async with self.db.execute(
"SELECT header_hash,block_record FROM full_blocks "
f'WHERE header_hash in ({"?," * (len(header_hashes) - 1)}?)',
tuple(header_hashes),
) as cursor:
for row in await cursor.fetchall():
header_hash = bytes32(row[0])
all_blocks[header_hash] = BlockRecord.from_bytes(row[1])
else:
formatted_str = f'SELECT block from block_records WHERE header_hash in ({"?," * (len(header_hashes) - 1)}?)'
async with self.db.execute(formatted_str, tuple([hh.hex() for hh in header_hashes])) as cursor:
for row in await cursor.fetchall():
block_rec: BlockRecord = BlockRecord.from_bytes(row[0])
all_blocks[block_rec.header_hash] = block_rec
ret: List[BlockRecord] = []
for hh in header_hashes:
if hh not in all_blocks:
raise ValueError(f"Header hash {hh} not in the blockchain")
ret.append(all_blocks[hh])
return ret
async def get_block_records_close_to_peak(
self, blocks_n: int
) -> Tuple[Dict[bytes32, BlockRecord], Optional[bytes32]]:
"""
Returns a dictionary with all blocks, as well as the header hash of the peak,
if present.
"""
res = await self.db.execute(
"SELECT header_hash, height from block_records WHERE is_peak = 1")
row = await res.fetchone()
await res.close()
if row is None:
return {}, None
header_hash_bytes, peak_height = row
peak: bytes32 = bytes32(bytes.fromhex(header_hash_bytes))
formatted_str = f"SELECT header_hash, block from block_records WHERE height >= {peak_height - blocks_n}"
cursor = await self.db.execute(formatted_str)
rows = await cursor.fetchall()
await cursor.close()
ret: Dict[bytes32, BlockRecord] = {}
for row in rows:
header_hash_bytes, block_record_bytes = row
header_hash = bytes.fromhex(header_hash_bytes)
ret[header_hash] = BlockRecord.from_bytes(block_record_bytes)
return ret, peak
async def get_block_record(self, header_hash: bytes32) -> Optional[BlockRecord]:
cursor = await self.db.execute(
"SELECT block from block_records WHERE header_hash=?",
(header_hash.hex(),),
)
row = await cursor.fetchone()
await cursor.close()
if row is not None:
return BlockRecord.from_bytes(row[0])
return None
async def get_block_records_at(self, heights: List[uint32]) -> List[BlockRecord]:
if len(heights) == 0:
return []
heights_db = tuple(heights)
formatted_str = (
f'SELECT block from block_records WHERE height in ({"?," * (len(heights_db) - 1)}?) ORDER BY height ASC;'
)
cursor = await self.db.execute(formatted_str, heights_db)
rows = await cursor.fetchall()
await cursor.close()
return [BlockRecord.from_bytes(row[0]) for row in rows]
async def get_block_record(self, header_hash: bytes32) -> Optional[BlockRecord]:
if self.db_wrapper.db_version == 2:
async with self.db.execute(
"SELECT block_record FROM full_blocks WHERE header_hash=?",
(header_hash,),
) as cursor:
row = await cursor.fetchone()
if row is not None:
return BlockRecord.from_bytes(row[0])
else:
async with self.db.execute(
"SELECT block from block_records WHERE header_hash=?",
(header_hash.hex(),),
) as cursor:
row = await cursor.fetchone()
if row is not None:
return BlockRecord.from_bytes(row[0])
return None
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 get_block_records(
self, ) -> Tuple[Dict[bytes32, BlockRecord], Optional[bytes32]]:
"""
Returns a dictionary with all blocks, as well as the header hash of the peak,
if present.
"""
cursor = await self.db.execute("SELECT * from block_records")
rows = await cursor.fetchall()
await cursor.close()
ret: Dict[bytes32, BlockRecord] = {}
peak: Optional[bytes32] = None
for row in rows:
header_hash = bytes.fromhex(row[0])
ret[header_hash] = BlockRecord.from_bytes(row[3])
if row[5]:
assert peak is None # Sanity check, only one peak
peak = header_hash
return ret, peak
async def get_block_records_in_range(
self,
start: int,
stop: int,
) -> Dict[bytes32, BlockRecord]:
"""
Returns a dictionary with all blocks in range between start and stop
if present.
"""
formatted_str = f"SELECT header_hash, block from block_records WHERE height >= {start} and height <= {stop}"
cursor = await self.db.execute(formatted_str)
rows = await cursor.fetchall()
await cursor.close()
ret: Dict[bytes32, BlockRecord] = {}
for row in rows:
header_hash = bytes.fromhex(row[0])
ret[header_hash] = BlockRecord.from_bytes(row[1])
return ret
async def get_block_records_in_range(
self,
start: int,
stop: int,
) -> Dict[bytes32, BlockRecord]:
"""
Returns a dictionary with all blocks, as well as the header hash of the peak,
if present.
"""
formatted_str = f"SELECT header_hash, block from block_records WHERE height >= {start} and height <= {stop}"
cursor = await self.db.execute(formatted_str)
rows = await cursor.fetchall()
await cursor.close()
ret: Dict[bytes32, BlockRecord] = {}
for row in rows:
header_hash_bytes, block_record_bytes = row
header_hash = bytes.fromhex(header_hash_bytes)
ret[header_hash] = BlockRecord.from_bytes(block_record_bytes)
return ret
async def get_block_records_by_hash(self, header_hashes: List[bytes32]):
"""
Returns a list of Block Records, ordered by the same order in which header_hashes are passed in.
Throws an exception if the blocks are not present
"""
if len(header_hashes) == 0:
return []
header_hashes_db = tuple([hh.hex() for hh in header_hashes])
formatted_str = f'SELECT block from block_records WHERE header_hash in ({"?," * (len(header_hashes_db) - 1)}?)'
cursor = await self.db.execute(formatted_str, header_hashes_db)
rows = await cursor.fetchall()
await cursor.close()
all_blocks: Dict[bytes32, BlockRecord] = {}
for row in rows:
block_rec: BlockRecord = BlockRecord.from_bytes(row[0])
all_blocks[block_rec.header_hash] = block_rec
ret: List[BlockRecord] = []
for hh in header_hashes:
if hh not in all_blocks:
raise ValueError(f"Header hash {hh} not in the blockchain")
ret.append(all_blocks[hh])
return ret
async def get_block_records_close_to_peak(
self, blocks_n: int
) -> Tuple[Dict[bytes32, BlockRecord], Optional[bytes32]]:
"""
Returns a dictionary with all blocks that have height >= peak height - blocks_n, as well as the
peak header hash.
"""
res = await self.db.execute("SELECT * from block_records WHERE is_peak = 1")
peak_row = await res.fetchone()
await res.close()
if peak_row is None:
return {}, None
formatted_str = f"SELECT header_hash, block from block_records WHERE height >= {peak_row[2] - blocks_n}"
cursor = await self.db.execute(formatted_str)
rows = await cursor.fetchall()
await cursor.close()
ret: Dict[bytes32, BlockRecord] = {}
for row in rows:
header_hash = bytes.fromhex(row[0])
ret[header_hash] = BlockRecord.from_bytes(row[1])
return ret, bytes.fromhex(peak_row[0])
async def _validate_weight_proof_inner(
self, weight_proof: WeightProof, skip_segment_validation: bool
) -> Tuple[bool, uint32, List[SubEpochSummary], List[BlockRecord]]:
assert len(weight_proof.sub_epochs) > 0
if len(weight_proof.sub_epochs) == 0:
return False, uint32(0), [], []
peak_height = weight_proof.recent_chain_data[
-1].reward_chain_block.height
log.info(f"validate weight proof peak height {peak_height}")
summaries, sub_epoch_weight_list = _validate_sub_epoch_summaries(
self._constants, weight_proof)
if summaries is None:
log.error("weight proof failed sub epoch data validation")
return False, uint32(0), [], []
seed = summaries[-2].get_hash()
rng = random.Random(seed)
if not validate_sub_epoch_sampling(rng, sub_epoch_weight_list,
weight_proof):
log.error("failed weight proof sub epoch sample validation")
return False, uint32(0), [], []
constants, summary_bytes, wp_segment_bytes, wp_recent_chain_bytes = vars_to_bytes(
self._constants, summaries, weight_proof)
vdf_tasks: List[asyncio.Future] = []
recent_blocks_validation_task: asyncio.Future = asyncio.get_running_loop(
).run_in_executor(
self._executor,
_validate_recent_blocks_and_get_records,
constants,
wp_recent_chain_bytes,
summary_bytes,
pathlib.Path(self._executor_shutdown_tempfile.name),
)
try:
if not skip_segment_validation:
segments_validated, vdfs_to_validate = _validate_sub_epoch_segments(
constants, rng, wp_segment_bytes, summary_bytes)
if not segments_validated:
return False, uint32(0), [], []
vdf_chunks = chunks(vdfs_to_validate, self._num_processes)
for chunk in vdf_chunks:
byte_chunks = []
for vdf_proof, classgroup, vdf_info in chunk:
byte_chunks.append(
(bytes(vdf_proof), bytes(classgroup),
bytes(vdf_info)))
vdf_task: asyncio.Future = asyncio.get_running_loop(
).run_in_executor(
self._executor,
_validate_vdf_batch,
constants,
byte_chunks,
pathlib.Path(self._executor_shutdown_tempfile.name),
)
vdf_tasks.append(vdf_task)
for vdf_task in vdf_tasks:
validated = await vdf_task
if not validated:
return False, uint32(0), [], []
valid_recent_blocks, records_bytes = await recent_blocks_validation_task
finally:
recent_blocks_validation_task.cancel()
for vdf_task in vdf_tasks:
vdf_task.cancel()
if not valid_recent_blocks:
log.error("failed validating weight proof recent blocks")
# Verify the data
return False, uint32(0), [], []
records = [BlockRecord.from_bytes(b) for b in records_bytes]
# TODO fix find fork point
return True, uint32(0), summaries, records
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]
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]