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
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_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])
