async def chain_info(request):
best_height = builder.best_block.height
best_block = builder.best_block
old_block_height = builder.best_chain[0].height - 1
old_block_hash = hexlify(builder.get_block_hash(old_block_height)).decode()
data = {'best': best_block.getinfo()}
difficulty = dict()
for consensus, ratio in V.BLOCK_CONSENSUSES.items():
name = C.consensus2name[consensus]
target = get_bits_by_hash(previous_hash=best_block.hash, consensus=consensus)[1]
block_time = round(V.BLOCK_TIME_SPAN / ratio * 100)
diff = (MAX_256_INT // target) / 100000000
bias = get_bias_by_hash(previous_hash=best_block.previous_hash, consensus=consensus)
difficulty[name] = {
'number': consensus,
'diff': round(diff / 100000000, 8),
'bias': round(bias, 8),
'fixed_diff': round(diff / bias, 8),
'hashrate(kh/s)': round((MAX_256_INT//target)/block_time/1000, 3),
'is_base': V.BLOCK_BASE_CONSENSUS == consensus,
}
data['mining'] = difficulty
data['size'] = best_block.getsize()
data['checkpoint'] = {'height': old_block_height, 'blockhash': old_block_hash}
data['money_supply'] = GompertzCurve.calc_total_supply(best_height)
data['total_supply'] = GompertzCurve.k
return web_base.json_res(data)
def check_block(block: Block):
# 挿入前にBlockの正当性チェック
if len(block.txs) == 0:
raise BlockChainError('Block don\'t have any txs')
elif block.size > C.SIZE_BLOCK_LIMIT:
raise BlockChainError('Block size is too large [{}b>{}b]'.format(block.size, C.SIZE_BLOCK_LIMIT))
bits = get_bits_by_hash(previous_hash=block.previous_hash, consensus=block.flag)[0]
if block.bits != bits:
raise BlockChainError('Block bits differ from calc. [{}!={}]'.format(block.bits, bits))
log.debug("check block success {}".format(block))
def check_block(block: Block):
# 挿入前にBlockの正当性チェック
if block.f_orphan:
raise BlockChainError('Block is orphan.')
elif len(block.txs) == 0:
raise BlockChainError('Block don\'t have any txs.')
elif block.getsize() > C.SIZE_BLOCK_LIMIT:
raise BlockChainError('Block size is too large [{}b>{}b]'.format(block.getsize(), C.SIZE_BLOCK_LIMIT))
bits = get_bits_by_hash(previous_hash=block.previous_hash, consensus=block.flag)[0]
if block.bits != bits:
raise BlockChainError('Block bits differ from calc. [{}!={}]'.format(block.bits, bits))
logging.debug("Checked block {}.".format(block))
def create_mining_block(consensus):
global mining_address
# setup mining address for PoW
with mining_address_lock:
if mining_address is None:
if V.MINING_ADDRESS is None:
with create_db(V.DB_ACCOUNT_PATH) as db:
cur = db.cursor()
mining_address = generate_new_address_by_userid(
C.ANT_UNKNOWN, cur)
db.commit()
else:
mining_address = V.MINING_ADDRESS
if unconfirmed_txs is None:
raise FailedGenerateWarning('unconfirmed_txs is None')
if previous_block is None:
raise FailedGenerateWarning('previous_block is None')
# create proof_tx
reward = GompertzCurve.calc_block_reward(previous_block.height + 1)
fees = sum(tx.gas_amount * tx.gas_price for tx in unconfirmed_txs)
proof_tx = TX.from_dict(
tx={
'type': C.TX_POW_REWARD,
'inputs': list(),
'outputs': [(mining_address, 0, reward + fees)],
'gas_price': 0,
'gas_amount': 0,
'message_type': C.MSG_NONE,
'message': b''
})
proof_tx.update_time()
# create mining block
bits, target = get_bits_by_hash(previous_hash=previous_block.hash,
consensus=consensus)
mining_block = Block.from_dict(
block={
'merkleroot': b'\xff' * 32,
'time': 0,
'previous_hash': previous_block.hash,
'bits': bits,
'nonce': b'\xff\xff\xff\xff'
})
proof_tx.height = previous_block.height + 1
mining_block.height = proof_tx.height
mining_block.flag = consensus
mining_block.bits2target()
mining_block.txs.append(proof_tx)
if unconfirmed_txs is None:
raise FailedGenerateWarning('unconfirmed_txs is None')
mining_block.txs.extend(unconfirmed_txs)
mining_block.update_merkleroot()
mining_block.update_time(proof_tx.time)
return mining_block
async def chain_info(request):
try:
best_height = chain_builder.best_block.height
best_block = chain_builder.best_block
old_block_height = chain_builder.best_chain[0].height - 1
old_block_hash = chain_builder.get_block_hash(old_block_height).hex()
data = {'best': best_block.getinfo()}
difficulty = dict()
for consensus, ratio in V.BLOCK_CONSENSUSES.items():
name = C.consensus2name[consensus]
bits, target = get_bits_by_hash(previous_hash=best_block.hash,
consensus=consensus)
target = float(target)
block_time = round(V.BLOCK_TIME_SPAN / ratio * 100)
diff = round(DEFAULT_TARGET / target, 8)
bias = get_bias_by_hash(previous_hash=best_block.previous_hash,
consensus=consensus)
difficulty[name] = {
'number':
consensus,
'bits':
bits.to_bytes(4, 'big').hex(),
'diff':
round(diff, 8),
'bias':
round(bias, 8),
'fixed_diff':
round(diff / bias, 8),
'hashrate(kh/s)':
round((MAX_256_FLOAT / target) / block_time / 1000, 3)
}
data['mining'] = difficulty
data['size'] = best_block.size
data['checkpoint'] = {
'height': old_block_height,
'blockhash': old_block_hash
}
data['money_supply'] = GompertzCurve.calc_total_supply(best_height)
data['total_supply'] = GompertzCurve.k
if F_ADD_CASHE_INFO:
data['cashe'] = {
'get_bits_by_hash': str(get_bits_by_hash.cache_info()),
'get_bias_by_hash': str(get_bias_by_hash.cache_info())
}
return utils.json_res(data)
except Exception:
return utils.error_res()
def create_mining_block(consensus):
global mining_address
# create proof_tx
mining_address = mining_address or V.MINING_ADDRESS or new_key()
reward = GompertzCurve.calc_block_reward(previous_block.height + 1)
fees = sum(tx.gas_amount * tx.gas_price for tx in unconfirmed_txs)
proof_tx = TX(
tx={
'type': C.TX_POW_REWARD,
'inputs': list(),
'outputs': [(mining_address, 0, reward + fees)],
'gas_price': 0,
'gas_amount': 0,
'message_type': C.MSG_PLAIN if V.MINING_MESSAGE else C.MSG_NONE,
'message': V.MINING_MESSAGE if V.MINING_MESSAGE else b''
})
proof_tx.update_time()
# create mining block
bits, target = get_bits_by_hash(previous_hash=previous_block.hash,
consensus=consensus)
mining_block = Block(
block={
'merkleroot': b'\xff' * 32,
'time': 0,
'previous_hash': previous_block.hash,
'bits': bits,
'nonce': b'\xff\xff\xff\xff'
})
proof_tx.height = previous_block.height + 1
mining_block.height = proof_tx.height
mining_block.flag = consensus
mining_block.bits2target()
mining_block.txs.append(proof_tx)
mining_block.txs.extend(unconfirmed_txs)
mining_block.update_merkleroot()
mining_block.update_time(proof_tx.time)
return mining_block
async def getinfo(*args, **kwargs):
"""
method "getinfo"
"""
consensus = int(kwargs['password'])
best_block = chain_builder.best_block
# difficulty
bits, target = get_bits_by_hash(previous_hash=best_block.hash,
consensus=consensus)
difficulty = (0xffffffffffffffff // target) / 100000000
# balance
users = user_account.get_balance(confirm=6)
return {
"version": __version__,
"protocolversion": __chain_version__,
"balance": round(users.get(0, 0) / pow(10, V.COIN_DIGIT), 8),
"blocks": best_block.height,
"moneysupply": GompertzCurve.calc_total_supply(best_block.height),
"connections": len(V.P2P_OBJ.core.user),
"testnet": V.BECH32_HRP == 'test',
"difficulty": round(difficulty, 8),
"paytxfee": round(V.COIN_MINIMUM_PRICE / pow(10, V.COIN_DIGIT), 8),
"errors": __message__,
}
def proof_of_stake(self):
global staking_limit
limit_deque = deque(maxlen=10)
self.event_close.set()
while self.event_close.is_set():
# check start mining
if previous_block is None or unconfirmed_txs is None or unspents_txs is None:
sleep(0.1)
continue
if len(unspents_txs) == 0:
logging.info("No unspents for staking, wait 180s..")
sleep(180)
continue
start = time()
# create staking block
bits, target = get_bits_by_hash(previous_hash=previous_block.hash,
consensus=C.BLOCK_POS)
reward = GompertzCurve.calc_block_reward(previous_block.height + 1)
staking_block = Block(
block={
'merkleroot': b'\xff' * 32,
'time': 0,
'previous_hash': previous_block.hash,
'bits': bits,
'nonce': b'\xff\xff\xff\xff'
})
staking_block.height = previous_block.height + 1
staking_block.flag = C.BLOCK_POS
staking_block.bits2target()
staking_block.txs.append(None) # Dummy proof tx
staking_block.txs.extend(unconfirmed_txs)
calculate_nam = 0
for proof_tx in unspents_txs.copy():
address = proof_tx.outputs[0][0]
proof_tx.outputs[0] = (address, 0,
proof_tx.pos_amount + reward)
proof_tx.update_time()
calculate_nam += 1
# next check block
if previous_block is None or unconfirmed_txs is None or unspents_txs is None:
logging.debug("Reset by \"nothing params found\"")
sleep(1)
break
elif previous_block.hash != staking_block.previous_hash:
logging.debug("Reset by \"Don't match previous_hash\"")
sleep(1)
break
elif not proof_tx.pos_check(
previous_hash=previous_block.hash,
pos_target_hash=staking_block.target_hash):
continue
else:
# Staked yay!!
proof_tx.height = staking_block.height
proof_tx.signature = [
message2signature(proof_tx.b, proof_tx.outputs[0][0])
]
staking_block.txs[0] = proof_tx
# Fit block size
while staking_block.getsize() > C.SIZE_BLOCK_LIMIT:
tx = staking_block.txs.pop()
if tx.type == C.TX_FINISH_CONTRACT:
staking_block.txs.pop()
staking_block.update_time(proof_tx.time)
staking_block.update_merkleroot()
confirmed_generating_block(staking_block)
break
else:
# check time
used = time() - start
remain = 1.0 - used
max_limit = max(50, int(calculate_nam / max(0.0001, used)))
limit_deque.append(int(max_limit * self.power_limit))
staking_limit = sum(limit_deque) // len(limit_deque)
if int(time()) % 90 == 0:
logging.info("Staking... margin={}% limit={}".format(
round(remain * 100, 1), staking_limit))
self.hashrate = (calculate_nam, time())
sleep(max(0.0, remain))
logging.info("Close signal")
def proof_of_capacity(self):
dir_path: str = self.config.get('path',
os.path.join(V.DB_HOME_DIR, 'plots'))
while self.f_enable:
# check start mining
if previous_block is None or unconfirmed_txs is None:
sleep(0.1)
continue
if not os.path.exists(dir_path):
sleep(30)
continue
s = time()
previous_hash = previous_block.hash
height = previous_block.height + 1
block_time = int(s - V.BLOCK_GENESIS_TIME)
bits, target = get_bits_by_hash(previous_hash=previous_hash,
consensus=C.BLOCK_CAP_POS)
reward = GompertzCurve.calc_block_reward(height)
# start staking by capacity
count = 0
for file_name in os.listdir(dir_path):
m = optimize_file_name_re.match(file_name)
if m is None:
continue
count += int(m.group(3)) - int(m.group(2))
if count < 1:
log.debug("not found plot file, wait 60 sec")
sleep(60)
continue
# let's seek files
nonce, work_hash, address = multi_seek(dir=dir_path,
previous_hash=previous_hash,
target=target.to_bytes(
32, 'little'),
time=block_time,
worker=os.cpu_count())
if work_hash is None:
# return failed => (None, None, err-msg)
if int(s) % 300 == 0:
log.debug("PoC mining info by \"{}\"".format(address))
else:
# return success => (nonce, workhash, address)
if previous_block is None or unconfirmed_txs is None:
continue
if previous_block.hash != previous_hash:
continue
# Staked by capacity yay!!
total_fee = sum(tx.gas_price * tx.gas_amount
for tx in unconfirmed_txs)
staked_block = Block.from_dict(
block={
'version': 0, # always 0
'previous_hash': previous_hash,
'merkleroot': b'\x00' * 32,
'time': 0,
'bits': bits,
'nonce': nonce,
'height': height,
'flag': C.BLOCK_CAP_POS
})
staked_proof_tx = TX.from_dict(
tx={
'type': C.TX_POS_REWARD,
'time': block_time,
'deadline': block_time + 10800,
'gas_price': 0,
'gas_amount': 0,
'outputs': [(address, 0, reward + total_fee)]
})
staked_block.txs.append(staked_proof_tx)
staked_block.txs.extend(unconfirmed_txs)
while staked_block.size > C.SIZE_BLOCK_LIMIT:
staked_block.txs.pop()
staked_block.update_time(staked_proof_tx.time)
staked_block.update_merkleroot()
staked_block.work_hash = work_hash
signature = sign_message_by_address(raw=staked_block.b,
address=address)
staked_proof_tx.signature.append(signature)
confirmed_generating_block(staked_block)
# finish all
used_time = time() - s
self.hashrate = (count, time())
sleep(max(1 - used_time, 0))
log.info("Close signal")
def proof_of_stake(self):
global staking_limit
limit_deque = deque(maxlen=10)
while self.f_enable:
# check start mining
if previous_block is None or unconfirmed_txs is None or unspents_txs is None:
sleep(0.1)
continue
if len(unspents_txs) == 0:
log.info("No unspents for staking, wait 180s")
sleep(180)
continue
start = time()
# create staking block
bits, target = get_bits_by_hash(previous_hash=previous_block.hash,
consensus=C.BLOCK_COIN_POS)
reward = GompertzCurve.calc_block_reward(previous_block.height + 1)
staking_block = Block.from_dict(
block={
'version': 0, # always 0
'merkleroot': b'\xff' * 32,
'time': 0,
'previous_hash': previous_block.hash,
'bits': bits,
'nonce': b'\xff\xff\xff\xff'
})
staking_block.height = previous_block.height + 1
staking_block.flag = C.BLOCK_COIN_POS
staking_block.bits2target()
staking_block.txs.append(None) # Dummy proof tx
if unconfirmed_txs is None:
raise FailedGenerateWarning('unconfirmed_txs is None')
staking_block.txs.extend(unconfirmed_txs)
calculate_nam = 0
for proof_tx in unspents_txs.copy():
address = proof_tx.outputs[0][0]
proof_tx.outputs[0] = (address, 0,
proof_tx.pos_amount + reward)
proof_tx.update_time()
calculate_nam += 1
# next check block
if previous_block is None or unconfirmed_txs is None or unspents_txs is None:
log.debug("Reset by \"nothing params found\"")
sleep(1)
break
elif previous_block.hash != staking_block.previous_hash:
log.debug("Reset by \"Don't match previous_hash\"")
sleep(1)
break
elif not stake_coin_check(
tx=proof_tx,
previous_hash=previous_block.hash,
target_hash=staking_block.target_hash):
continue
else:
# Staked yay!!
proof_tx.height = staking_block.height
staking_block.txs[0] = proof_tx
# Fit block size
while staking_block.size > C.SIZE_BLOCK_LIMIT:
staking_block.txs.pop()
staking_block.update_time(proof_tx.time)
staking_block.update_merkleroot()
signature = sign_message_by_address(raw=staking_block.b,
address=address)
proof_tx.signature.append(signature)
confirmed_generating_block(staking_block)
break
else:
# check time
used = time() - start
remain = 1.0 - used
max_limit = max(50, int(calculate_nam / max(0.0001, used)))
limit_deque.append(int(max_limit * self.power_limit))
staking_limit = sum(limit_deque) // len(limit_deque)
if int(time()) % 90 == 0:
log.info("Staking... margin={}% limit={}".format(
round(remain * 100, 1), staking_limit))
self.hashrate = (calculate_nam, time())
sleep(max(0.0, remain + random() - 0.5))
log.info("Close signal")
