class Miner:
def __init__(self,
chain_manager,
pre_block_logic,
mining_address: bytes,
mining_thread_count):
self.lock = threading.RLock()
self.qryptonight_7_miner = CNv1Miner(pre_block_logic,
mining_address,
mining_thread_count,
self.lock)
self.qrandomx_miner = QRandomXMiner(chain_manager,
pre_block_logic,
mining_address,
mining_thread_count,
self.lock)
self._qn = Qryptonight()
self._chain_manager = chain_manager
self._pre_block_logic = pre_block_logic
self._mining_block = None
self._current_difficulty = None
self._current_target = None
self._measurement = None
self._current_miner = self.qrandomx_miner
def isRunning(self):
return self._current_miner.isRunning
def get_miner(self, height, dev_config: DevConfig):
if height < dev_config.hard_fork_heights[0]:
self._current_miner = self.qryptonight_7_miner
return self.qryptonight_7_miner
else:
self._current_miner = self.qrandomx_miner
return self.qrandomx_miner
def solutionAvailable(self):
return self._current_miner.solutionAvailable()
def prepare_next_unmined_block_template(self,
mining_address,
tx_pool,
parent_block: Block,
parent_difficulty,
dev_config: DevConfig):
miner = self.get_miner(parent_block.block_number + 1, dev_config)
try:
logger.debug('Miner-Try - prepare_next_unmined_block_template')
with self.lock:
logger.debug('Miner-Locked - prepare_next_unmined_block_template')
logger.debug('Miner-TryCancel - prepare_next_unmined_block_template')
miner.cancel()
logger.debug('Miner-Cancel - prepare_next_unmined_block_template')
self._mining_block = self.create_block(last_block=parent_block,
mining_nonce=0,
tx_pool=tx_pool,
miner_address=mining_address)
parent_metadata = self._chain_manager.get_block_metadata(parent_block.headerhash)
self._measurement = self._chain_manager.get_measurement(dev_config,
self._mining_block.timestamp,
self._mining_block.prev_headerhash,
parent_metadata)
self._current_difficulty, self._current_target = DifficultyTracker.get(
measurement=self._measurement,
parent_difficulty=parent_difficulty,
dev_config=dev_config)
except Exception as e:
logger.warning("Exception in start_mining")
logger.exception(e)
def start_mining(self,
parent_block: Block,
parent_difficulty,
dev_config: DevConfig):
logger.debug('!!! Mine #{} | {} ({}) | {} -> {} | {} '.format(
self._mining_block.block_number,
self._measurement, self._mining_block.timestamp - parent_block.timestamp,
UInt256ToString(parent_difficulty), UInt256ToString(self._current_difficulty),
bin2hstr(bytearray(self._current_target))
))
logger.debug('!!! Mine #{} | blob: {}'.format(
self._mining_block.block_number,
bin2hstr(bytearray(self._mining_block.mining_blob(dev_config)))
))
miner = self.get_miner(parent_block.block_number + 1, dev_config)
miner.start_mining(self._mining_block, self._current_target, dev_config)
def create_block(self,
last_block,
mining_nonce,
tx_pool: TransactionPool,
miner_address) -> Optional[Block]:
seed_block = self._chain_manager.get_block_by_number(self._qn.get_seed_height(last_block.block_number + 1))
dev_config = self._chain_manager.get_config_by_block_number(block_number=last_block.block_number + 1)
dummy_block = Block.create(dev_config=dev_config,
block_number=last_block.block_number + 1,
prev_headerhash=last_block.headerhash,
prev_timestamp=last_block.timestamp,
transactions=[],
miner_address=miner_address,
seed_height=seed_block.block_number,
seed_hash=seed_block.headerhash)
dummy_block.set_nonces(dev_config, mining_nonce, 0)
t_pool2 = tx_pool.transactions
block_size = dummy_block.size
block_size_limit = self._chain_manager.get_block_size_limit(last_block, dev_config)
transactions = []
state_container = self._chain_manager.new_state_container(set(),
last_block.block_number,
True,
None)
for tx_set in t_pool2:
tx = tx_set[1].transaction
# Skip Transactions for later, which doesn't fit into block
if block_size + tx.size + dev_config.tx_extra_overhead > block_size_limit:
continue
if not self._chain_manager.update_state_container(tx, state_container):
logger.error("[create_block] Error updating state_container")
return None
if not tx.validate_all(state_container, check_nonce=False):
if not state_container.revert_update():
return None
tx_pool.remove_tx_from_pool(tx)
continue
if not self._chain_manager.apply_txn(tx, state_container):
logger.error("[create_block] Failed to apply txn")
if not state_container.revert_update():
return None
continue
addr_from_pk_state = state_container.addresses_state[tx.addr_from]
addr_from_pk = Transaction.get_slave(tx)
if addr_from_pk:
addr_from_pk_state = state_container.addresses_state[addr_from_pk]
tx._data.nonce = addr_from_pk_state.nonce
block_size += tx.size + dev_config.tx_extra_overhead
transactions.append(tx)
block = Block.create(dev_config=dev_config,
block_number=last_block.block_number + 1,
prev_headerhash=last_block.headerhash,
prev_timestamp=last_block.timestamp,
transactions=transactions,
miner_address=miner_address,
seed_height=seed_block.block_number,
seed_hash=seed_block.headerhash)
return block
def get_block_to_mine(self,
wallet_address,
tx_pool,
last_block,
last_block_difficulty) -> list:
dev_config = self._chain_manager.get_config_by_block_number(last_block.block_number + 1)
try:
mining_address = bytes(hstr2bin(wallet_address[1:].decode()))
if not OptimizedAddressState.address_is_valid(mining_address):
raise ValueError("[get_block_to_mine] Invalid Wallet Address %s", wallet_address)
except Exception as e:
raise ValueError("Error while decoding wallet address %s", e)
if self._mining_block:
if last_block.headerhash == self._mining_block.prev_headerhash:
if self._mining_block.transactions[0].coinbase.addr_to == mining_address:
return [bin2hstr(self._mining_block.mining_blob(dev_config)),
int(bin2hstr(self._current_difficulty), 16)]
else:
self._mining_block.update_mining_address(dev_config, mining_address) # Updates only Miner Address
self.prepare_next_unmined_block_template(mining_address,
tx_pool,
last_block,
last_block_difficulty,
dev_config=dev_config)
return [bin2hstr(self._mining_block.mining_blob(dev_config)),
int(bin2hstr(self._current_difficulty), 16)]
def submit_mined_block(self, blob: bytes) -> bool:
dev_config = self._chain_manager.get_config_by_block_number(self._mining_block.block_number - 1)
if not self._mining_block.verify_blob(blob, dev_config):
return False
blockheader = copy.deepcopy(self._mining_block.blockheader)
blockheader.set_mining_nonce_from_blob(blob, dev_config)
dev_config = self._chain_manager.get_config_by_block_number(blockheader.block_number)
if not self._chain_manager.validate_mining_nonce(blockheader, dev_config):
return False
self._mining_block.set_nonces(dev_config,
blockheader.mining_nonce,
blockheader.extra_nonce)
cloned_block = copy.deepcopy(self._mining_block)
return self._pre_block_logic(cloned_block)
def cancel(self):
self.qryptonight_7_miner.cancel()
self.qrandomx_miner.cancel()
def validate(self, chain_manager, future_blocks: OrderedDict) -> bool:
if chain_manager.get_block_is_duplicate(self):
logger.warning('Duplicate Block #%s %s', self.block_number, bin2hstr(self.headerhash))
return False
parent_block = chain_manager.get_block(self.prev_headerhash)
dev_config = chain_manager.get_config_by_block_number(self.block_number)
# If parent block not found in state, then check if its in the future block list
if not parent_block:
try:
parent_block = future_blocks[self.prev_headerhash]
except KeyError:
logger.warning('Parent block not found')
logger.warning('Parent block headerhash %s', bin2hstr(self.prev_headerhash))
return False
if not self._validate_parent_child_relation(parent_block):
logger.warning('Failed to validate blocks parent child relation')
return False
if not chain_manager.validate_mining_nonce(self.blockheader, dev_config):
logger.warning('Failed PoW Validation')
return False
if len(self.transactions) == 0:
return False
try:
state_container = chain_manager.new_state_container(set(),
self.block_number,
False,
None)
coinbase_txn = Transaction.from_pbdata(self.transactions[0])
coinbase_amount = coinbase_txn.amount
if not coinbase_txn.validate_all(state_container):
return False
if self.block_number != 2078158:
for proto_tx in self.transactions[1:]:
if proto_tx.WhichOneof('transactionType') == 'coinbase':
logger.warning("Multiple coinbase transaction found")
return False
except Exception as e:
logger.warning('Exception %s', e)
return False
# Build transaction merkle tree, calculate fee reward, and then see if BlockHeader also agrees.
hashedtransactions = []
for tx in self.transactions:
tx = Transaction.from_pbdata(tx)
hashedtransactions.append(tx.txhash)
fee_reward = 0
for index in range(1, len(self.transactions)):
fee_reward += self.transactions[index].fee
qn = Qryptonight()
seed_block = chain_manager.get_block_by_number(qn.get_seed_height(self.block_number))
self.blockheader._seed_height = seed_block.block_number
self.blockheader._seed_hash = seed_block.headerhash
if not self.blockheader.validate(fee_reward,
coinbase_amount,
merkle_tx_hash(hashedtransactions),
dev_config):
return False
return True
class MiningAPIService(MiningAPIServicer):
MAX_REQUEST_QUANTITY = 100
def __init__(self, qrlnode: QRLNode):
self.qrlnode = qrlnode
self._qn = Qryptonight()
@GrpcExceptionWrapper(qrlmining_pb2.GetBlockMiningCompatibleResp,
StatusCode.UNKNOWN)
def GetBlockMiningCompatible(
self, request: qrlmining_pb2.GetBlockMiningCompatibleReq,
context) -> qrlmining_pb2.GetBlockMiningCompatibleResp:
blockheader, block_metadata = self.qrlnode.get_blockheader_and_metadata(
request.height)
response = qrlmining_pb2.GetBlockMiningCompatibleResp()
if blockheader is not None and block_metadata is not None:
response = qrlmining_pb2.GetBlockMiningCompatibleResp(
blockheader=blockheader.pbdata,
blockmetadata=block_metadata.pbdata)
return response
@GrpcExceptionWrapper(qrlmining_pb2.GetLastBlockHeaderResp,
StatusCode.UNKNOWN)
def GetLastBlockHeader(self, request: qrlmining_pb2.GetLastBlockHeaderReq,
context) -> qrlmining_pb2.GetLastBlockHeaderResp:
response = qrlmining_pb2.GetLastBlockHeaderResp()
blockheader, block_metadata = self.qrlnode.get_blockheader_and_metadata(
request.height)
response.difficulty = int(bin2hstr(block_metadata.block_difficulty),
16)
response.height = self.qrlnode.block_height
response.timestamp = blockheader.timestamp
response.reward = blockheader.block_reward + blockheader.fee_reward
response.hash = bin2hstr(blockheader.headerhash)
response.depth = self.qrlnode.block_height - blockheader.block_number
return response
@GrpcExceptionWrapper(qrlmining_pb2.GetBlockToMineResp, StatusCode.UNKNOWN)
def GetBlockToMine(self, request: qrlmining_pb2.GetBlockToMineReq,
context) -> qrlmining_pb2.GetBlockToMineResp:
response = qrlmining_pb2.GetBlockToMineResp()
blocktemplate_blob_and_difficulty = self.qrlnode.get_block_to_mine(
request.wallet_address)
if blocktemplate_blob_and_difficulty:
response.blocktemplate_blob = blocktemplate_blob_and_difficulty[0]
response.difficulty = blocktemplate_blob_and_difficulty[1]
response.height = self.qrlnode.block_height + 1
response.reserved_offset = config.dev.extra_nonce_offset
seed_block_number = self._qn.get_seed_height(response.height)
response.seed_hash = bin2hstr(
self.qrlnode.get_block_header_hash_by_number(
seed_block_number))
return response
@GrpcExceptionWrapper(qrlmining_pb2.GetBlockToMineResp, StatusCode.UNKNOWN)
def SubmitMinedBlock(self, request: qrlmining_pb2.SubmitMinedBlockReq,
context) -> qrlmining_pb2.SubmitMinedBlockResp:
response = qrlmining_pb2.SubmitMinedBlockResp()
response.error = not self.qrlnode.submit_mined_block(request.blob)
return response