def calc_return_balance(start_tx, c_address, redeem_address):
""" Calc redeem balance """
balance = Accounting()
for address, coin_id, amount in start_tx.outputs:
if address == c_address:
balance[redeem_address][coin_id] += amount
return balance
def calc_tx_movement(tx, c_address, redeem_address, emulate_gas):
""" Calc tx inner movement """
account = Accounting()
for txhash, txindex in tx.inputs:
input_tx = tx_builder.get_tx(txhash=txhash)
address, coin_id, amount = input_tx.outputs[txindex]
account[address][coin_id] -= amount
account[redeem_address][0] += (tx.gas_amount+emulate_gas) * tx.gas_price
account[c_address][0] -= emulate_gas * tx.gas_price
for address, coin_id, amount in tx.outputs:
account[address][coin_id] += amount
return account
def read_txhash2log(txhash, cur):
d = cur.execute(
"""
SELECT `type`,`user`,`coin_id`,`amount`,`time` FROM `log` WHERE `hash`=?
""", (txhash, )).fetchall()
if len(d) == 0:
return None
movement = Accounting()
_type = _time = None
for _type, user, coin_id, amount, _time in d:
movement.add_coins(user, coin_id, amount)
return MoveLog(txhash, _type, movement, _time, False)
def read_txhash2movelog(txhash, cur):
"""read MoveLog by txhash"""
d = cur.execute(
"""
SELECT `type`,`user`,`coin_id`,`amount`,`time` FROM `log` WHERE `hash`=?
""", (txhash, )).fetchall()
if len(d) == 0:
return None
movement = Accounting()
ntype = ntime = None
for ntype, user, coin_id, amount, ntime in d:
movement[user][coin_id] += amount
return MoveLog(txhash, ntype, movement, ntime)
def move_balance(self, _from, _to, coins, outer_cur=None):
assert isinstance(coins, Balance), 'coins is Balance.'
with closing(create_db(V.DB_ACCOUNT_PATH)) as db:
cur = outer_cur or db.cursor()
try:
# DataBaseに即書き込む(Memoryに入れない)
movements = Accounting()
movements[_from] -= coins
movements[_to] += coins
txhash = insert_log(movements, cur)
if outer_cur is None:
db.commit()
self.db_balance += movements
return txhash
except Exception:
logging.error("Failed move_balance,", exc_info=True)
db.rollback()
def init(self, f_delete=False):
assert f_delete is False, 'Unsafe function!'
with closing(create_db(V.DB_ACCOUNT_PATH)) as db:
cur = db.cursor()
memory_sum = Accounting()
for move_log in read_log_iter(cur):
# logに記録されてもBlockに取り込まれていないならTXは存在せず
if builder.db.read_tx(move_log.txhash):
memory_sum += move_log.movement
else:
logging.debug("It's unknown log {}".format(move_log))
if f_delete:
delete_log(move_log.txhash, cur)
if f_delete:
logging.warning("Delete user's old unconfirmed tx.")
db.commit()
self.db_balance += memory_sum
def affect_new_tx(self, tx, outer_cur=None):
with closing(create_db(V.DB_ACCOUNT_PATH)) as db:
cur = outer_cur or db.cursor()
movement = Accounting()
# send_from_applyで登録済み
if tx.hash in self.memory_movement:
return
# memory_movementに追加
for txhash, txindex in tx.inputs:
input_tx = tx_builder.get_tx(txhash)
address, coin_id, amount = input_tx.outputs[txindex]
user = read_address2user(address, cur)
if user is not None:
movement.add_coins(user, coin_id, -1 * amount)
for address, coin_id, amount in tx.outputs:
user = read_address2user(address, cur)
if user is not None:
movement.add_coins(user, coin_id, amount)
# check
if len(movement) == 0:
return # 無関係である
move_log = MoveLog(tx.hash, tx.type, movement, tx.time, True, tx)
self.memory_movement[tx.hash] = move_log
logging.debug("Affect account new tx. {}".format(tx))
def __init__(self):
self.db_balance = Accounting()
# {txhash: (_type, movement, _time),..}
self.memory_movement = dict()
def send_many(sender,
send_pairs,
cur,
fee_coin_id=0,
gas_price=None,
msg_type=C.MSG_NONE,
msg_body=b'',
subtract_fee_from_amount=False,
retention=10800):
assert isinstance(sender, int), 'Sender is user id'
assert 0 < len(send_pairs), 'Empty send_pairs'
# send_pairs check
movements = Accounting()
send_coins = Balance()
outputs = list()
coins = Balance()
for address, coin_id, amount in send_pairs:
assert isinstance(address, str)
assert isinstance(coin_id, int) and isinstance(amount, int), 'CoinID, amount is int'
coins[coin_id] += amount
outputs.append((address, coin_id, amount))
user = read_address2userid(address=address, cur=cur)
if user is not None:
movements[user][coin_id] += amount # send to myself
movements[sender] -= coins
# movements[C.ANT_OUTSIDE] += coins
# tx
now = int(time() - V.BLOCK_GENESIS_TIME)
tx = TX.from_dict(
tx={
'version': __chain_version__,
'type': C.TX_TRANSFER,
'time': now,
'deadline': now + retention,
'inputs': list(),
'outputs': outputs,
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': msg_type,
'message': msg_body
})
tx.gas_amount = tx.size + C.SIGNATURE_GAS
# fill unspents
input_address = fill_inputs_outputs(tx=tx, cur=cur, fee_coin_id=fee_coin_id)
# subtract fee from amount
if subtract_fee_from_amount:
if fee_coin_id != 0:
raise BlockChainError('subtract_fee option require fee_coin_id=0')
subtract_fee = subtract_fee_from_user_balance(tx)
# fee returns to sender's balance
movements[sender][0] += subtract_fee
send_coins[0] -= subtract_fee
fee_coins = Balance(coin_id=fee_coin_id, amount=tx.gas_price * tx.gas_amount)
# check enough balance account have
for address, coin_id, amount in send_pairs:
send_coins[coin_id] += amount
check_enough_amount(sender=sender, send_coins=send_coins, fee_coins=fee_coins, cur=cur)
# replace dummy address
replace_redeem_dummy_address(tx, cur)
# setup signature
tx.serialize()
setup_signature(tx, input_address)
movements[sender] -= fee_coins
# movements[C.ANT_OUTSIDE] += fee_coins
insert_movelog(movements, cur, tx.type, tx.time, tx.hash)
return tx
def change_mintcoin(mint_id,
cur,
amount=None,
description=None,
image=None,
setting=None,
new_address=None,
gas_price=None,
sender=C.ANT_UNKNOWN,
retention=10800):
assert amount or description or image or setting or new_address
params = dict()
if description:
params['description'] = description
if image:
params['image'] = image
if new_address:
params['address'] = new_address
if len(params) == 0:
params = None
if not params and not setting and not amount:
raise BlockChainError('No update found.')
m_before = get_mintcoin_object(coin_id=mint_id)
if m_before.version == -1:
raise BlockChainError('Not init mintcoin. {}'.format(m_before))
result = check_mintcoin_new_format(m_before=m_before,
new_params=params,
new_setting=setting)
if isinstance(result, str):
raise BlockChainError('check_mintcoin_new_format(): {}'.format(result))
msg_body = bjson.dumps((mint_id, params, setting), compress=False)
tx = TX(
tx={
'type': C.TX_MINT_COIN,
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': C.MSG_BYTE,
'message': msg_body
})
if amount:
tx.outputs.append((MINTCOIN_DUMMY_ADDRESS, 0, amount))
send_coins = Balance(0, amount)
minting_coins = Balance(mint_id, amount)
else:
send_coins = Balance(0, 0)
minting_coins = Balance(0, 0)
tx.update_time(retention)
additional_gas = C.MINTCOIN_GAS + C.SIGNATURE_GAS # for mint_coin user signature
tx.gas_amount = tx.size + C.SIGNATURE_GAS + additional_gas
tx.serialize()
# fill unspents
fee_coin_id = 0
input_address = fill_inputs_outputs(tx=tx,
cur=cur,
fee_coin_id=fee_coin_id,
additional_gas=additional_gas)
input_address.add(m_before.address)
fee_coins = Balance(coin_id=fee_coin_id,
amount=tx.gas_price * tx.gas_amount)
# check amount
check_enough_amount(sender=sender,
send_coins=send_coins,
fee_coins=fee_coins)
# replace dummy address
replace_redeem_dummy_address(tx=tx, cur=cur)
# replace dummy mint_id
replace_mint_dummy_address(tx=tx,
mint_address=m_before.address,
mint_id=mint_id,
f_raise=False)
# setup signature
tx.serialize()
setup_signature(tx=tx, input_address=input_address)
# movement
movements = Accounting()
movements[sender] += minting_coins
movements[C.ANT_OUTSIDE] -= minting_coins
movements[sender] -= fee_coins
movements[C.ANT_OUTSIDE] += fee_coins
insert_log(movements, cur, tx.type, tx.time, tx.hash)
return tx
def issue_mintcoin(name,
unit,
digit,
amount,
cur,
description=None,
image=None,
additional_issue=True,
change_address=True,
gas_price=None,
sender=C.ANT_UNKNOWN,
retention=10800):
mint_id = get_new_coin_id()
sender_name = read_user2name(user=sender, cur=cur)
mint_address = create_new_user_keypair(name=sender_name, cur=cur)
params = {
"name": name,
"unit": unit,
"digit": digit,
"address": mint_address,
"description": description,
"image": image
}
setting = {
"additional_issue": additional_issue,
"change_address": change_address
}
m_before = get_mintcoin_object(coin_id=mint_id)
result = check_mintcoin_new_format(m_before=m_before,
new_params=params,
new_setting=setting)
if isinstance(result, str):
raise BlockChainError('check_mintcoin_new_format(): {}'.format(result))
msg_body = bjson.dumps((mint_id, params, setting), compress=False)
tx = TX(
tx={
'type': C.TX_MINT_COIN,
'inputs': list(),
'outputs': [(MINTCOIN_DUMMY_ADDRESS, 0, amount)],
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': C.MSG_BYTE,
'message': msg_body
})
tx.update_time(retention)
additional_gas = C.MINTCOIN_GAS
tx.gas_amount = tx.size + C.SIGNATURE_GAS + additional_gas
tx.serialize()
# fill unspents
fee_coin_id = 0
input_address = fill_inputs_outputs(tx=tx,
cur=cur,
fee_coin_id=fee_coin_id,
additional_gas=additional_gas)
# input_address.add(mint_address)
fee_coins = Balance(coin_id=fee_coin_id,
amount=tx.gas_price * tx.gas_amount)
# check amount
check_enough_amount(sender=sender,
send_coins=Balance(0, amount),
fee_coins=fee_coins)
# replace dummy address
replace_redeem_dummy_address(tx=tx, cur=cur)
# replace dummy mint_id
replace_mint_dummy_address(tx=tx,
mint_address=mint_address,
mint_id=mint_id,
f_raise=True)
# setup signature
tx.serialize()
setup_signature(tx=tx, input_address=input_address)
# movement
movements = Accounting()
minting_coins = Balance(mint_id, amount)
movements[sender] += minting_coins
movements[C.ANT_OUTSIDE] -= minting_coins
movements[sender] -= fee_coins
movements[C.ANT_OUTSIDE] += fee_coins
insert_log(movements, cur, tx.type, tx.time, tx.hash)
return mint_id, tx
def send_many(sender,
send_pairs,
cur,
fee_coin_id=0,
gas_price=None,
msg_type=C.MSG_NONE,
msg_body=b'',
f_balance_check=True,
retention=10800):
assert isinstance(sender, int), 'Sender is user id.'
assert 0 < len(send_pairs), 'Empty send_pairs.'
# send_pairs check
movements = Accounting()
outputs = list()
coins = Balance()
for address, coin_id, amount in send_pairs:
assert isinstance(
address,
str) and len(address) == 40, 'Recipient is 40 letter string.'
assert isinstance(coin_id, int) and isinstance(
amount, int), 'CoinID, amount is int.'
coins[coin_id] += amount
outputs.append((address, coin_id, amount))
movements[sender] -= coins
movements[C.ANT_OUTSIDE] += coins
# tx
now = int(time.time() - V.BLOCK_GENESIS_TIME)
tx = TX(
tx={
'version': __chain_version__,
'type': C.TX_TRANSFER,
'time': now,
'deadline': now + retention,
'inputs': list(),
'outputs': outputs,
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': msg_type,
'message': msg_body
})
tx.gas_amount = tx.size + C.SIGNATURE_GAS
# fill unspents
input_address = fill_inputs_outputs(tx, cur, fee_coin_id, additional_gas=0)
# account check
fee_coins = Balance(coin_id=fee_coin_id,
amount=tx.gas_price * tx.gas_amount)
if f_balance_check:
# 残高が十分にあるかチェック
send_coins = Balance()
for address, coin_id, amount in send_pairs:
send_coins[coin_id] += amount
check_enough_amount(sender, send_coins, fee_coins)
if sender in (C.ANT_OUTSIDE, C.ANT_RESERVED):
# 内部アカウントは不可
raise BlockChainError('Not allowed inner account.')
# replace dummy address
replace_redeem_dummy_address(tx, cur)
# setup signature
tx.serialize()
setup_signature(tx, input_address)
movements[sender] -= fee_coins
movements[C.ANT_OUTSIDE] += fee_coins
insert_log(movements, cur, tx.type, tx.time, tx.hash)
return tx