async def set_target(self, to_time):
if not self.block_factory.special_min:
await self.set_target_from_last_non_special_min(
self.config.LatestBlock.block)
# todo: keep block target at normal target, for header and block info.
# Only tweak target at validation time, and don't include special_min into header
if self.block_factory.index >= CHAIN.SPECIAL_MIN_FORK: # TODO: use a CHAIN constant
# print("test target", int(to_time), self.last_block_time)
if self.block_factory.target == 0:
# If the node is started when the current block is special_min, then we have a 0 target
await self.set_target_as_previous_non_special_min()
# print('target set to', self.block_factory.target)
delta_t = int(to_time) - self.last_block_time
if delta_t \
> CHAIN.special_min_trigger(self.config.network, self.block_factory.index):
special_target = CHAIN.special_target(
self.block_factory.index, self.block_factory.target,
delta_t, self.config.network)
self.block_factory.special_min = True
self.block_factory.special_target = special_target
self.block_factory.time = int(to_time)
else:
self.block_factory.special_min = False
elif self.block_factory.index < CHAIN.SPECIAL_MIN_FORK: # TODO: use a CHAIN constant
if (int(to_time) - self.last_block_time) > self.target_block_time:
self.block_factory.target = self.max_target
self.block_factory.special_min = True
self.block_factory.time = int(to_time)
else:
self.block_factory.special_min = False
def verify(self):
getcontext().prec = 8
if int(self.version) != int(CHAIN.get_version_for_height(self.index)):
raise Exception("Wrong version for block height", self.version, CHAIN.get_version_for_height(self.index))
txns = self.get_transaction_hashes()
verify_merkle_root = self.get_merkle_root(txns)
if verify_merkle_root != self.merkle_root:
raise Exception("Invalid block merkle root")
header = self.generate_header()
hashtest = self.generate_hash_from_header(self.index, header, str(self.nonce))
# print("header", header, "nonce", self.nonce, "hashtest", hashtest)
if self.hash != hashtest:
getLogger("tornado.application").warning("Verify error hashtest {} header {} nonce {}".format(hashtest, header, self.nonce))
raise Exception('Invalid block hash')
address = P2PKHBitcoinAddress.from_pubkey(bytes.fromhex(self.public_key))
try:
# print("address", address, "sig", self.signature, "pubkey", self.public_key)
result = verify_signature(base64.b64decode(self.signature), self.hash.encode('utf-8'), bytes.fromhex(self.public_key))
if not result:
raise Exception("block signature1 is invalid")
except:
try:
result = VerifyMessage(address, BitcoinMessage(self.hash.encode('utf-8'), magic=''), self.signature)
if not result:
raise
except:
raise Exception("block signature2 is invalid")
# verify reward
coinbase_sum = 0
for txn in self.transactions:
if int(self.index) > CHAIN.CHECK_TIME_FROM and (int(txn.time) > int(self.time) + CHAIN.TIME_TOLERANCE):
#yadacoin.core.config.CONFIG.mongo.db.miner_transactions.remove({'id': txn.transaction_signature}, multi=True)
#raise Exception("Block embeds txn too far in the future")
pass
if txn.coinbase:
for output in txn.outputs:
coinbase_sum += float(output.value)
fee_sum = 0.0
for txn in self.transactions:
if not txn.coinbase:
fee_sum += float(txn.fee)
reward = CHAIN.get_block_reward(self.index)
#if Decimal(str(fee_sum)[:10]) != Decimal(str(coinbase_sum)[:10]) - Decimal(str(reward)[:10]):
"""
KO for block 13949
0.02099999 50.021 50.0
Integrate block error 1 ('Coinbase output total does not equal block reward + transaction fees', 0.020999999999999998, 0.021000000000000796)
"""
if quantize_eight(fee_sum) != quantize_eight(coinbase_sum - reward):
print(fee_sum, coinbase_sum, reward)
raise Exception("Coinbase output total does not equal block reward + transaction fees", fee_sum, (coinbase_sum - reward))
async def sync_bottom_up(self):
#bottom up syncing
last_latest = self.latest_block
self.latest_block = self.config.LatestBlock.block
if last_latest:
if self.latest_block.index > last_latest.index:
self.app_log.info(
'Block height: %s | time: %s' %
(self.latest_block.index,
datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")))
latest_consensus = await self.mongo.async_db.consensus.find_one({
'index':
self.latest_block.index + 1,
'block.version':
CHAIN.get_version_for_height(self.latest_block.index + 1),
'ignore': {
'$ne': True
}
})
if latest_consensus:
self.remove_pending_transactions_now_in_chain(latest_consensus)
self.remove_fastgraph_transactions_now_in_chain(latest_consensus)
latest_consensus = await Block.from_dict(latest_consensus['block'])
if self.debug:
self.app_log.info("Latest consensus_block {}".format(
latest_consensus.index))
records = await self.mongo.async_db.consensus.find({
'index':
self.latest_block.index + 1,
'block.version':
CHAIN.get_version_for_height(self.latest_block.index + 1),
'ignore': {
'$ne': True
}
}).to_list(length=100)
for record in sorted(records,
key=lambda x: int(x['block']['target'], 16)):
try:
block = await Block.from_dict(record['block'])
except:
continue
blockchain = await Blockchain.init_async([block])
if await self.integrate_blockchain_with_existing_chain(
blockchain):
return True
else:
# this path should be for syncing only.
# Stack:
# search_network_for_new
# request_blocks
# getblocks <--- rpc request
# blocksresponse <--- rpc response
# integrate_blockchain_with_existing_chain
return await self.search_network_for_new()
async def integrate_block_with_existing_chain(self,
block: Block,
extra_blocks=None):
"""Even in case of retrace, this is the only place where we insert a new block into the block collection and update BU"""
self.app_log.warning('integrate_block_with_existing_chain')
try:
# TODO: reorg the checks, to have the faster ones first.
# Like, here we begin with checking every tx one by one, when <e did not even check index and provided hash matched previous one.
bc = await Blockchain.init_async()
result = await bc.test_block(block)
if not result:
return False
# self.mongo.db.blocks.update({'index': block.index}, block.to_dict(), upsert=True)
# self.mongo.db.blocks.remove({'index': {"$gt": block.index}}, multi=True)
# todo: is this useful? can we have more blocks above? No because if we had, we would have raised just above
await self.mongo.async_db.blocks.delete_many(
{'index': {
"$gte": block.index
}})
db_block = block.to_dict()
db_block['updated_at'] = time()
await self.mongo.async_db.blocks.replace_one(
{'index': block.index}, db_block, upsert=True)
await self.mongo.async_db.miner_transactions.delete_many({
'id': {
'$in':
[x.transaction_signature for x in block.transactions]
}
})
await self.config.LatestBlock.update_latest_block()
self.app_log.info("New block inserted for height: {}".format(
block.index))
latest_consensus = await self.mongo.async_db.consensus.find_one({
'index':
block.index + 1,
'block.version':
CHAIN.get_version_for_height(block.index + 1),
'ignore': {
'$ne': True
}
})
if not latest_consensus:
await self.config.LatestBlock.block_checker(
) # This will trigger mining pool to generate a new block to mine
if self.config.mp:
await self.config.mp.refresh()
await StratumServer.block_checker()
if not self.syncing:
await self.config.nodeShared().send_block(
self.config.LatestBlock.block)
return True
except Exception as e:
from traceback import format_exc
self.app_log.warning("{}".format(format_exc()))
async def get_previous_consensus_block_from_local(self, block):
#table cleanup
new_blocks = self.mongo.async_db.consensus.find({
'block.hash':
block.prev_hash,
'block.index': (block.index - 1),
'block.version':
CHAIN.get_version_for_height((block.index - 1))
})
async for new_block in new_blocks:
new_block = await Block.from_dict(new_block['block'])
yield new_block
async def init_async(cls):
self = cls()
self.config = get_config()
self.mongo = self.config.mongo
self.app_log = getLogger("tornado.application")
self.target_block_time = CHAIN.target_block_time(self.config.network)
self.max_target = CHAIN.MAX_TARGET
self.inbound = {}
self.connected_ips = {}
self.last_block_time = 0
self.index = 0
last_block = await self.config.BU.get_latest_block()
if last_block:
self.last_block_time = int(last_block['time'])
self.index = last_block['index']
self.last_refresh = 0
self.block_factory = None
await self.refresh()
return self
async def generate(
cls,
transactions=None,
public_key=None,
private_key=None,
force_version=None,
index=0,
force_time=None,
prev_hash=None,
nonce=None,
target=CHAIN.MAX_TARGET
):
config = get_config()
app_log = getLogger("tornado.application")
if force_version is None:
version = CHAIN.get_version_for_height(index)
else:
version = force_version
if force_time:
xtime = str(int(force_time))
else:
xtime = str(int(time.time()))
index = int(index)
if index == 0:
prev_hash = ''
elif prev_hash is None and index != 0:
prev_hash = LatestBlock.block.hash
transactions = transactions or []
transaction_objs = []
fee_sum = 0.0
used_sigs = []
used_inputs = {}
for txn in transactions:
try:
if isinstance(txn, Transaction):
transaction_obj = txn
else:
transaction_obj = Transaction.from_dict(txn)
if transaction_obj.transaction_signature in used_sigs:
print('duplicate transaction found and removed')
continue
await transaction_obj.verify()
used_sigs.append(transaction_obj.transaction_signature)
except:
raise InvalidTransactionException("invalid transactions")
try:
if int(index) > CHAIN.CHECK_TIME_FROM and (int(transaction_obj.time) > int(xtime) + CHAIN.TIME_TOLERANCE):
config.mongo.db.miner_transactions.remove({'id': transaction_obj.transaction_signature}, multi=True)
app_log.debug("Block embeds txn too far in the future {} {}".format(xtime, transaction_obj.time))
continue
if transaction_obj.inputs:
failed = False
used_ids_in_this_txn = []
for x in transaction_obj.inputs:
if config.BU.is_input_spent(x.id, transaction_obj.public_key):
failed = True
if x.id in used_ids_in_this_txn:
failed = True
if (x.id, transaction_obj.public_key) in used_inputs:
failed = True
used_inputs[(x.id, transaction_obj.public_key)] = transaction_obj
used_ids_in_this_txn.append(x.id)
if failed:
continue
transaction_objs.append(transaction_obj)
fee_sum += float(transaction_obj.fee)
except Exception as e:
await config.mongo.async_db.miner_transactions.delete_many({'id': transaction_obj.transaction_signature})
config.app_log.debug('Exception {}'.format(e))
continue
block_reward = CHAIN.get_block_reward(index)
coinbase_txn = await Transaction.generate(
public_key=public_key,
private_key=private_key,
outputs=[{
'value': block_reward + float(fee_sum),
'to': str(P2PKHBitcoinAddress.from_pubkey(bytes.fromhex(public_key)))
}],
coinbase=True
)
transaction_objs.append(coinbase_txn)
transactions = transaction_objs
block = await cls.init_async(
version=version,
block_time=xtime,
block_index=index,
prev_hash=prev_hash,
transactions=transactions,
public_key=public_key,
target=target
)
txn_hashes = block.get_transaction_hashes()
block.set_merkle_root(txn_hashes)
block.target = target
block.header = block.generate_header()
if nonce:
block.nonce = str(nonce)
block.hash = block.generate_hash_from_header(
block.index,
block.header,
str(block.nonce)
)
block.signature = TU.generate_signature(block.hash, private_key)
return block
async def test_block(self,
block,
extra_blocks=[],
simulate_last_block=None):
try:
block.verify()
except Exception as e:
self.config.app_log.warning(
"Integrate block error 1: {}".format(e))
return False
async def get_txns(txns):
for x in txns:
yield x
async def get_inputs(inputs):
for x in inputs:
yield x
if block.index == 0:
return True
if simulate_last_block:
last_block = simulate_last_block
else:
last_block_data = await self.config.mongo.async_db.blocks.find_one(
{'index': block.index - 1})
if last_block_data:
last_block = await Block.from_dict(last_block_data)
else:
return False
if block.index >= CHAIN.FORK_10_MIN_BLOCK:
target = await CHAIN.get_target_10min(block.index, last_block,
block, extra_blocks)
else:
target = await CHAIN.get_target(block.index, last_block, block,
extra_blocks)
delta_t = int(time()) - int(last_block.time)
special_target = CHAIN.special_target(block.index, block.target,
delta_t,
get_config().network)
if block.index >= 35200 and delta_t < 600 and block.special_min:
return False
used_inputs = {}
i = 0
async for transaction in get_txns(block.transactions):
if extra_blocks:
transaction.extra_blocks = extra_blocks
self.config.app_log.warning('verifying txn: {} block: {}'.format(
i, block.index))
i += 1
try:
await transaction.verify()
except InvalidTransactionException as e:
self.config.app_log.warning(e)
return False
except InvalidTransactionSignatureException as e:
self.config.app_log.warning(e)
return False
except MissingInputTransactionException as e:
self.config.app_log.warning(e)
return False
except NotEnoughMoneyException as e:
self.config.app_log.warning(e)
return False
except Exception as e:
self.config.app_log.warning(e)
return False
if transaction.inputs:
failed = False
used_ids_in_this_txn = []
async for x in get_inputs(transaction.inputs):
txn = self.config.BU.get_transaction_by_id(x.id,
instance=True)
if not txn:
txn = await transaction.find_in_extra_blocks(x)
if not txn:
failed = True
if self.config.BU.is_input_spent(x.id,
transaction.public_key,
from_index=block.index):
failed = True
if x.id in used_ids_in_this_txn:
failed = True
if (x.id, transaction.public_key) in used_inputs:
failed = True
used_inputs[(x.id, transaction.public_key)] = transaction
used_ids_in_this_txn.append(x.id)
if failed and block.index >= CHAIN.CHECK_DOUBLE_SPEND_FROM:
return False
elif failed and block.index < CHAIN.CHECK_DOUBLE_SPEND_FROM:
continue
if block.index >= 35200 and delta_t < 600 and block.special_min:
self.config.app_log.warning(
f'Failed: {block.index} >= {35200} and {delta_t} < {600} and {block.special_min}'
)
return False
if int(block.index) > CHAIN.CHECK_TIME_FROM and int(block.time) < int(
last_block.time):
self.config.app_log.warning(
f'Failed: {int(block.index)} > {CHAIN.CHECK_TIME_FROM} and {int(block.time)} < {int(last_block.time)}'
)
return False
if last_block.index != (block.index -
1) or last_block.hash != block.prev_hash:
self.config.app_log.warning(
f'Failed: {last_block.index} != {(block.index - 1)} or {last_block.hash} != {block.prev_hash}'
)
return False
if int(block.index) > CHAIN.CHECK_TIME_FROM and (
int(block.time) <
(int(last_block.time) + 600)) and block.special_min:
self.config.app_log.warning(
f'Failed: {int(block.index)} > {CHAIN.CHECK_TIME_FROM} and ({int(block.time)} < ({int(last_block.time)} + {600})) and {block.special_min}'
)
return False
target_block_time = CHAIN.target_block_time(self.config.network)
checks_passed = False
if (block.index >= CHAIN.BLOCK_V5_FORK) and int(
block.little_hash(), 16) < target:
self.config.app_log.warning('5')
checks_passed = True
elif (int(block.hash, 16) < target):
self.config.app_log.warning('6')
checks_passed = True
elif (block.special_min and int(block.hash, 16) < special_target):
self.config.app_log.warning('7')
checks_passed = True
elif (block.special_min and block.index < 35200):
self.config.app_log.warning('8')
checks_passed = True
elif (block.index >= 35200 and block.index < 38600
and block.special_min and
(int(block.time) - int(last_block.time)) > target_block_time):
self.config.app_log.warning('9')
checks_passed = True
else:
self.config.app_log.warning(
"Integrate block error - index and time error")
if not checks_passed:
return False
return True
async def get(self):
def get_ticker():
return requests.get('https://safe.trade/api/v2/peatio/public/markets/tickers')
try:
if not hasattr(self.config, 'ticker'):
self.config.ticker = get_ticker()
self.config.last_update = time.time()
if (time.time() - self.config.last_update) > (600 * 6):
self.config.ticker = get_ticker()
self.config.last_update = time.time()
last_btc = self.config.ticker.json()['ydabtc']['ticker']['last']
except:
last_btc = 0
await self.config.LatestBlock.block_checker()
pool_public_key = self.config.pool_public_key if hasattr(self.config, 'pool_public_key') else self.config.public_key
total_blocks_found = await self.config.mongo.async_db.blocks.count_documents(
{
'public_key': pool_public_key
}
)
expected_blocks = 144
pool_blocks_found_list = await self.config.mongo.async_db.blocks.find(
{
'public_key': pool_public_key,
'time': {'$gte': time.time() - ( 600 * 144 )}
},
{
'_id': 0
}
).sort([('index', -1)]).to_list(100)
expected_blocks = 144
mining_time_interval = 240
shares_count = await self.config.mongo.async_db.shares.count_documents({'time': {'$gte': time.time() - mining_time_interval}})
if shares_count > 0:
pool_hash_rate = (shares_count * 69905) / mining_time_interval
else:
pool_hash_rate = 0
net_blocks_found = self.config.mongo.async_db.blocks.find({'time': {'$gte': time.time() - ( 600 * 144 )}})
net_blocks_found = await net_blocks_found.to_list(length=expected_blocks*10)
if len(net_blocks_found) > 0:
avg_net_target = 0
for block in net_blocks_found:
avg_net_target += int(block['target'], 16)
avg_net_target = avg_net_target / len(net_blocks_found)
net_difficulty = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffff / avg_net_target
network_hash_rate = ((len(net_blocks_found)/expected_blocks)*net_difficulty * 2**32 / 600)
else:
net_difficulty = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffff / 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffff
network_hash_rate = 0
miner_count_pool_stat = await self.config.mongo.async_db.pool_stats.find_one({'stat': 'miner_count'})
worker_count_pool_stat = await self.config.mongo.async_db.pool_stats.find_one({'stat': 'worker_count'})
payouts = await self.config.mongo.async_db.share_payout.find({}, {'_id': 0}).sort([('index', -1)]).to_list(100)
self.render_as_json({
'pool': {
'hashes_per_second': pool_hash_rate,
'miner_count': miner_count_pool_stat['value'],
'worker_count': worker_count_pool_stat['value'],
'payout_scheme': 'PPLNS',
'pool_fee': self.config.pool_take,
'min_payout': 0,
'url': getattr(self.config, 'pool_url', f'{self.config.peer_host}:{self.config.stratum_pool_port}'),
'last_five_blocks': [{'timestamp': x['time'], 'height': x['index']} for x in pool_blocks_found_list[:5]],
'blocks_found': total_blocks_found,
'fee': self.config.pool_take,
'payout_frequency': self.config.payout_frequency,
'payouts': payouts,
'blocks': pool_blocks_found_list[:100]
},
'network': {
'height': self.config.LatestBlock.block.index,
'reward': CHAIN.get_block_reward(self.config.LatestBlock.block.index),
'last_block': self.config.LatestBlock.block.time,
'hashes_per_second': network_hash_rate,
'difficulty': net_difficulty
},
'market': {
'last_btc': last_btc
},
'coin': {
'algo': 'randomx YDA',
'circulating': self.config.LatestBlock.block.index * 50,
'max_supply': 21000000
}
})
async def on_miner_nonce(self,
nonce: str,
job: Job,
address: str = '') -> bool:
nonce = nonce + job.extra_nonce.encode().hex()
hash1 = self.block_factory.generate_hash_from_header(
self.block_factory.index, self.block_factory.header, nonce)
if self.block_factory.index >= CHAIN.BLOCK_V5_FORK:
hash1_test = self.little_hash(hash1)
else:
hash1_test = hash1
if (int(hash1_test, 16) > self.block_factory.target
and self.config.network != 'regnet'
and (self.block_factory.special_min
and int(hash1, 16) > self.block_factory.special_target)):
return False
block_candidate = await self.block_factory.copy()
block_candidate.hash = hash1
block_candidate.nonce = nonce
if block_candidate.special_min:
delta_t = int(block_candidate.time) - int(self.last_block_time)
special_target = CHAIN.special_target(block_candidate.index,
block_candidate.target,
delta_t, self.config.network)
block_candidate.special_target = special_target
if (block_candidate.index >= 35200 and
(int(block_candidate.time) - int(self.last_block_time)) < 600
and block_candidate.special_min):
self.app_log.warning(
"Special min block too soon: hash {} header {} nonce {}".
format(block_candidate.hash, block_candidate.header,
block_candidate.nonce))
return False
accepted = False
if ((int(block_candidate.target) +
0x0000F00000000000000000000000000000000000000000000000000000000000
) > int(hash1, 16) or
(block_candidate.index >= CHAIN.BLOCK_V5_FORK and
(int(block_candidate.target) +
0x0000F00000000000000000000000000000000000000000000000000000000000
) > int(block_candidate.little_hash(), 16))):
# submit share only now, not to slow down if we had a block
await self.mongo.async_db.shares.update_one(
{'hash': block_candidate.hash}, {
'$set': {
'address': address,
'index': block_candidate.index,
'hash': block_candidate.hash,
'nonce': nonce,
'time': int(time())
}
},
upsert=True)
accepted = True
if (int(block_candidate.target) > int(block_candidate.hash, 16)
or (block_candidate.index >= CHAIN.BLOCK_V5_FORK
and int(block_candidate.target) > int(
block_candidate.little_hash(), 16))):
block_candidate.signature = self.config.BU.generate_signature(
block_candidate.hash, self.config.private_key)
try:
block_candidate.verify()
except Exception as e:
self.app_log.warning(
"Verify error {} - hash {} header {} nonce {}".format(
e, block_candidate.hash, block_candidate.header,
block_candidate.nonce))
return False
# accept winning block
await self.accept_block(block_candidate)
# Conversion to dict is important, or the object may change
self.app_log.debug('block ok')
return {
'hash': block_candidate.hash,
'nonce': nonce,
'height': block_candidate.index,
'id': block_candidate.signature
}
elif (block_candidate.special_min and
(int(block_candidate.special_target) > int(
block_candidate.hash, 16))
or (block_candidate.index >= CHAIN.BLOCK_V5_FORK
and block_candidate.special_min and
(int(block_candidate.special_target) > int(
block_candidate.little_hash(), 16)))):
block_candidate.signature = self.config.BU.generate_signature(
block_candidate.hash, self.config.private_key)
try:
block_candidate.verify()
except Exception as e:
self.app_log.warning(
"Verify error {} - hash {} header {} nonce {}".format(
e, block_candidate.hash, block_candidate.header,
block_candidate.nonce))
return False
# accept winning block
await self.accept_block(block_candidate)
# Conversion to dict is important, or the object may change
self.app_log.debug('block ok - special_min')
return {
'hash': block_candidate.hash,
'nonce': nonce,
'height': block_candidate.index,
'id': block_candidate.signature
}
if accepted:
return {
'hash': block_candidate.hash,
'nonce': nonce,
'height': block_candidate.index,
'id': block_candidate.signature
}
async def get(self):
def get_ticker():
return requests.get(
'https://safe.trade/api/v2/peatio/public/markets/tickers')
try:
if not hasattr(self.config, 'ticker'):
self.config.ticker = get_ticker()
self.config.last_update = time.time()
if (time.time() - self.config.last_update) > (600 * 6):
self.config.ticker = get_ticker()
self.config.last_update = time.time()
last_btc = self.config.ticker.json()['ydabtc']['ticker']['last']
except:
last_btc = 0
shares_count = await self.config.mongo.async_db.shares.count_documents(
{'index': {
'$gte': self.config.LatestBlock.block.index - 10
}})
blocks_found = await self.config.mongo.async_db.share_payout.count_documents(
{})
last_block_found_payout = await self.config.mongo.async_db.share_payout.find_one(
{}, sort=[('index', -1)])
if last_block_found_payout:
last_block_found = await self.config.mongo.async_db.blocks.find_one(
{'index': last_block_found_payout['index']})
else:
last_block_found = None
prev_block = await self.config.mongo.async_db.blocks.find_one(
{'index': self.config.LatestBlock.block.index - 10})
seconds_elapsed = int(self.config.LatestBlock.block.time) - int(
prev_block['time'])
expected_blocks = 144
difficulty = CHAIN.MAX_TARGET_V3 / self.config.LatestBlock.block.target
net_blocks_found = self.config.mongo.async_db.blocks.find({
'index': {
'$gte': self.config.LatestBlock.block.index - 288
}
}).sort([('index', -1)])
include_blocks = []
async for x in net_blocks_found:
if int(x['time']) > time.time() - 600:
include_blocks.append(x)
network_hash_rate = ((len(include_blocks) / expected_blocks) *
difficulty * 2**32 / 600)
self.render_as_json({
'pool': {
'hashes_per_second': (shares_count * 1000) / float(
seconds_elapsed / 60
), # it takes 1000H/s to produce 1 0x0000f... share per minute
'miner_count':
len(self.config.poolServer.inbound_streams['Miner'].keys()),
'last_block':
last_block_found['time'] if last_block_found else 0,
'payout_scheme':
'PPLNS',
'pool_fee':
self.config.pool_take,
'blocks_found':
blocks_found,
'min_payout':
0,
'url':
f'{self.config.peer_host}:{self.config.stratum_pool_port}'
},
'network': {
'height':
self.config.LatestBlock.block.index,
'reward':
CHAIN.get_block_reward(self.config.LatestBlock.block.index),
'last_block':
self.config.LatestBlock.block.time,
'hashes_per_second':
network_hash_rate
},
'market': {
'last_btc': last_btc
}
})
async def insert_block(self, block, stream):
self.app_log.debug('insert_block')
try:
await self.mongo.async_db.blocks.delete_many(
{'index': {
"$gte": block.index
}})
db_block = block.to_dict()
db_block['updated_at'] = time()
await self.mongo.async_db.blocks.replace_one(
{'index': block.index}, db_block, upsert=True)
await self.mongo.async_db.miner_transactions.delete_many({
'id': {
'$in':
[x.transaction_signature for x in block.transactions]
}
})
await self.config.LatestBlock.update_latest_block()
self.app_log.info("New block inserted for height: {}".format(
block.index))
latest_consensus = await self.mongo.async_db.consensus.find_one({
'index':
block.index + 1,
'block.version':
CHAIN.get_version_for_height(block.index + 1),
'ignore': {
'$ne': True
}
})
if not latest_consensus:
await self.config.LatestBlock.block_checker(
) # This will trigger mining pool to generate a new block to mine
if not self.syncing:
if stream and stream.syncing:
return True
await self.config.nodeShared.send_block(
self.config.LatestBlock.block)
if self.config.mp:
if self.syncing:
return True
try:
await self.config.mp.refresh()
except Exception as e:
self.app_log.warning("{}".format(format_exc()))
try:
await StratumServer.block_checker()
except Exception as e:
self.app_log.warning("{}".format(format_exc()))
return True
except Exception as e:
from traceback import format_exc
self.app_log.warning("{}".format(format_exc()))
async def sync_bottom_up(self):
#bottom up syncing
last_latest = self.latest_block
self.latest_block = self.config.LatestBlock.block
if last_latest:
if self.latest_block.index > last_latest.index:
self.app_log.info(
'Block height: %s | time: %s' %
(self.latest_block.index,
datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")))
self.config.health.consensus.last_activity = time()
latest_consensus = await self.mongo.async_db.consensus.find_one({
'index':
self.latest_block.index + 1,
'block.version':
CHAIN.get_version_for_height(self.latest_block.index + 1),
'ignore': {
'$ne': True
}
})
if latest_consensus:
self.remove_pending_transactions_now_in_chain(latest_consensus)
self.remove_fastgraph_transactions_now_in_chain(latest_consensus)
latest_consensus = await Block.from_dict(latest_consensus['block'])
if self.debug:
self.app_log.info("Latest consensus_block {}".format(
latest_consensus.index))
records = await self.mongo.async_db.consensus.find({
'index':
self.latest_block.index + 1,
'block.version':
CHAIN.get_version_for_height(self.latest_block.index + 1),
'ignore': {
'$ne': True
}
}).to_list(length=100)
for record in sorted(records,
key=lambda x: int(x['block']['target'], 16)):
try:
block = await Block.from_dict(record['block'])
except:
continue
stream = await self.config.peer.get_peer_by_id(
record['peer']['rid'])
if stream and hasattr(stream,
'peer') and stream.peer.authenticated:
await self.block_queue.add(
ProcessingQueueItem(await Blockchain.init_async(block),
stream))
return True
else:
# this path is for syncing only.
# Stack:
# search_network_for_new
# request_blocks
# getblocks <--- rpc request
# blocksresponse <--- rpc response
# process_block_queue
return await self.search_network_for_new()
async def test_block(self, block):
try:
block.verify()
except Exception as e:
self.config.app_log.warning("Integrate block error 1: {}".format(e))
return False
async def get_txns(txns):
for x in txns:
yield x
async def get_inputs(inputs):
for x in inputs:
yield x
if block.index == 0:
return True
last_block = await Block.from_dict(await self.config.mongo.async_db.blocks.find_one({'index': block.index - 1}))
if block.index >= CHAIN.FORK_10_MIN_BLOCK:
target = await CHAIN.get_target_10min(block.index, last_block, block)
else:
target = await CHAIN.get_target(block.index, last_block, block)
delta_t = int(time()) - int(last_block.time)
special_target = CHAIN.special_target(block.index, block.target, delta_t, get_config().network)
if block.index >= 35200 and delta_t < 600 and block.special_min:
return False
used_inputs = {}
i = 0
async for transaction in get_txns(block.transactions):
self.config.app_log.warning('verifying txn: {} block: {}'.format(i, block.index))
i += 1
try:
await transaction.verify()
except InvalidTransactionException as e:
self.config.app_log.warning(e)
return False
except InvalidTransactionSignatureException as e:
self.config.app_log.warning(e)
return False
except MissingInputTransactionException as e:
self.config.app_log.warning(e)
except NotEnoughMoneyException as e:
self.config.app_log.warning(e)
return False
except Exception as e:
self.config.app_log.warning(e)
return False
if transaction.inputs:
failed = False
used_ids_in_this_txn = []
async for x in get_inputs(transaction.inputs):
if self.config.BU.is_input_spent(x.id, transaction.public_key, from_index=block.index):
failed = True
if x.id in used_ids_in_this_txn:
failed = True
if (x.id, transaction.public_key) in used_inputs:
failed = True
used_inputs[(x.id, transaction.public_key)] = transaction
used_ids_in_this_txn.append(x.id)
if failed and block.index >= CHAIN.CHECK_DOUBLE_SPEND_FROM:
return False
elif failed and block.index < CHAIN.CHECK_DOUBLE_SPEND_FROM:
continue
if block.index >= 35200 and delta_t < 600 and block.special_min:
self.config.app_log.warning('1')
return False
if int(block.index) > CHAIN.CHECK_TIME_FROM and int(block.time) < int(last_block.time):
self.config.app_log.warning('2')
return False
if last_block.index != (block.index - 1) or last_block.hash != block.prev_hash:
self.config.app_log.warning('3')
return False
if int(block.index) > CHAIN.CHECK_TIME_FROM and (int(block.time) < (int(last_block.time) + 600)) and block.special_min:
self.config.app_log.warning('4')
return False
if block.index >= 35200 and delta_t < 600 and block.special_min:
self.config.app_log.warning('5')
return False
target_block_time = CHAIN.target_block_time(self.config.network)
checks_passed = False
if (int(block.hash, 16) < target):
self.config.app_log.warning('6')
checks_passed = True
elif (block.special_min and int(block.hash, 16) < special_target):
self.config.app_log.warning('7')
checks_passed = True
elif (block.special_min and block.index < 35200):
self.config.app_log.warning('8')
checks_passed = True
elif (block.index >= 35200 and block.index < 38600 and block.special_min and (int(block.time) - int(last_block.time)) > target_block_time):
self.config.app_log.warning('9')
checks_passed = True
else:
self.config.app_log.warning("Integrate block error - index and time error")
if not checks_passed:
return False
return True