def amount_check(tx, payfee_coin_id):
# Inputs
input_coins = CoinObject()
for txhash, txindex in tx.inputs:
input_tx = tx_builder.get_tx(txhash)
if input_tx is None:
raise BlockChainError('Not found input tx {}'.format(
hexlify(txhash).decode()))
address, coin_id, amount = input_tx.outputs[txindex]
input_coins[coin_id] += amount
# Outputs
output_coins = CoinObject()
for address, coin_id, amount in tx.outputs:
if amount <= 0:
raise BlockChainError('Input amount is more than 0')
output_coins[coin_id] += amount
# Fee
fee_coins = CoinObject(coin_id=payfee_coin_id,
amount=tx.gas_price * tx.gas_amount)
# Check all plus amount
remain_amount = input_coins - output_coins - fee_coins
if not remain_amount.is_all_plus_amount():
raise BlockChainError(
'There are minus amount coins. {}={}-{}-{}'.format(
remain_amount, input_coins, output_coins, fee_coins))
def start_contract_tx(c_address,
c_method,
cur,
c_args=None,
outputs=None,
sender=C.ANT_UNKNOWN,
gas_price=None,
additional_gas_amount=None,
retention=10800):
# TXを作成
now = int(time.time()) - V.BLOCK_GENESIS_TIME
c_redeem = create_new_user_keypair(C.ANT_NAME_UNKNOWN, cur)
message = bjson.dumps((c_address, c_method, c_args or tuple(), c_redeem),
compress=False)
tx = TX(
tx={
'version': __chain_version__,
'type': C.TX_START_CONTRACT,
'time': now,
'deadline': now + retention,
'inputs': list(),
'outputs': outputs or list(),
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': C.MSG_BYTE,
'message': message
})
check_output_format(tx.outputs)
tx.gas_amount = tx.getsize() + 96
tx.serialize()
# fill unspents
fee_coin_id = 0
input_address = fill_inputs_outputs(
tx, cur, fee_coin_id, additional_gas_amount
or V.CONTRACT_MINIMUM_AMOUNT)
fee_coins = CoinObject(fee_coin_id, tx.gas_price * tx.gas_amount)
movements = UserCoins()
movements[sender] -= fee_coins
movements[C.ANT_OUTSIDE] += fee_coins
# account check
send_coins = CoinObject()
check_enough_amount(sender, send_coins, fee_coins)
if sender in (C.ANT_OUTSIDE, C.ANT_RESERVED):
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
def create_contract_tx(c_bin,
cur,
sender=C.ANT_UNKNOWN,
c_cs=None,
gas_price=None,
retention=10800):
assert isinstance(c_bin, bytes), 'contract is bytes code.'
assert isinstance(sender, int), 'Sender is id.'
if c_cs:
for k, v in c_cs.items():
assert isinstance(k, bytes), 'Key is bytes.'
assert isinstance(v, bytes), 'Value is bytes.'
# TXを作成
now = int(time.time()) - V.BLOCK_GENESIS_TIME
ck = create_new_user_keypair(C.ANT_NAME_CONTRACT, cur)
c_address = convert_address(ck, V.BLOCK_CONTRACT_PREFIX)
message = bjson.dumps((c_address, c_bin, c_cs), compress=False)
tx = TX(
tx={
'version': __chain_version__,
'type': C.TX_CREATE_CONTRACT,
'time': now,
'deadline': now + retention,
'inputs': list(),
'outputs': list(),
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': C.MSG_BYTE,
'message': message
})
tx.gas_amount = tx.getsize() + C.CONTRACT_CREATE_FEE + 96
# fill unspents
fee_coin_id = 0
input_address = fill_inputs_outputs(tx, cur, fee_coin_id,
C.CONTRACT_CREATE_FEE)
fee_coins = CoinObject(fee_coin_id, tx.gas_price * tx.gas_amount)
movements = UserCoins()
movements[sender] -= fee_coins
movements[C.ANT_OUTSIDE] += fee_coins
# account check
send_coins = CoinObject()
check_enough_amount(sender, send_coins, fee_coins)
if sender in (C.ANT_OUTSIDE, C.ANT_RESERVED):
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 c_address, tx
def input_output_digest(tx):
require_cks = set()
coins = CoinObject()
for txhash, txindex in tx.inputs:
input_tx = tx_builder.get_tx(txhash=txhash)
if input_tx is None:
raise BlockChainError('input tx is None. {}:{}'.format(
hexlify(txhash).decode(), txindex))
address, coin_id, amount = input_tx.outputs[txindex]
require_cks.add(address)
coins[coin_id] += amount
coins[0] -= tx.gas_amount * tx.gas_price
for address, coin_id, amount in tx.outputs:
coins[coin_id] -= amount
return require_cks, coins
async def move_many(request):
try:
post = await web_base.content_type_json_check(request)
ant_from = post.get('from', C.ANT_NAME_UNKNOWN)
ant_to = post['to']
coins = CoinObject()
for k, v in post['coins'].items():
coins[int(k)] += int(v)
with closing(create_db(V.DB_ACCOUNT_PATH)) as db:
cur = db.cursor()
_from = read_name2user(ant_from, cur)
_to = read_name2user(ant_to, cur)
txhash = user_account.move_balance(_from, _to, coins, cur)
db.commit()
return web_base.json_res({
'txhash': hexlify(txhash).decode(),
'from_id': _from, 'to_id': _to})
except Exception as e:
return web.Response(text=str(e), status=400)
async def send_from_user(request):
start = time()
if P.F_NOW_BOOTING:
return web.Response(text='Now booting...', status=403)
post = await web_base.content_type_json_check(request)
with closing(create_db(V.DB_ACCOUNT_PATH)) as db:
cur = db.cursor()
try:
from_name = post.get('from', C.ANT_NAME_UNKNOWN)
from_id = read_name2user(from_name, cur)
to_address = post['address']
coin_id = int(post.get('coin_id', 0))
amount = int(post['amount'])
coins = CoinObject(coin_id, amount)
message = post.get('message', None)
if message:
msg_type = C.MSG_PLAIN
msg_body = message.encode()
else:
msg_type = C.MSG_NONE
msg_body = b''
new_tx = send_from(from_id,
to_address,
coins,
cur,
msg_type=msg_type,
msg_body=msg_body)
if not send_newtx(new_tx=new_tx, outer_cur=cur):
raise BaseException('Failed to send new tx.')
db.commit()
return web_base.json_res({
'hash': hexlify(new_tx.hash).decode(),
'gas_amount': new_tx.gas_amount,
'gas_price': new_tx.gas_price,
'fee': new_tx.gas_amount * new_tx.gas_price,
'time': round(time() - start, 3)
})
except Exception as e:
db.rollback()
return web_base.error_res()
def change_mintcoin(mint_id,
cur,
amount=0,
message=None,
additional_issue=None,
image=None,
sender=C.ANT_UNKNOWN):
mint_old = get_mintcoin(mint_id)
assert mint_old, 'Not defined MintCoin {}'.format(mint_id)
mint_new = MintCoinObject(None)
mint_new.version = mint_old.version + 1
mint_new.coin_id = mint_id
mint_new.amount = amount
mint_new.additional_issue = additional_issue
mint_address = get_address(mint_old.owner, prefix=V.BLOCK_PREFIX)
uuid, sk, pk = read_address2keypair(mint_address, cur)
mint_new.owner = pk
mint_new.image = image
mint_new.message = message
# マージチェック
mint_new.marge(mint_old)
# Message内署名
mint_new.generate_sign(sk)
mint_new.serialize()
mint_new.check_param()
mint_new.check_sign()
logging.info("New Mintcoin skeleton created coin_id={}".format(
mint_new.coin_id))
# movement
movements = UserCoins()
minting_coins = CoinObject(mint_id, amount)
movements[sender] += minting_coins
movements[C.ANT_OUTSIDE] -= minting_coins
# TXを作成する
base_coin_id = 0
now = int(time.time()) - V.BLOCK_GENESIS_TIME
tx = TX(
tx={
'version':
__chain_version__,
'type':
C.TX_MINT_COIN,
'time':
now,
'deadline':
now + 10800,
'inputs':
list(),
'outputs': [(MINTCOIN_DUMMY_ADDRESS, base_coin_id,
amount)] if 0 < amount else list(),
'gas_price':
V.COIN_MINIMUM_PRICE,
'gas_amount':
1,
'message_type':
C.MSG_BYTE,
'message':
mint_new.binary
})
tx.gas_amount = tx.getsize() + 96 + C.MINTCOIN_FEE
tx.serialize()
fee_coin_id = 0
input_address = fill_inputs_outputs(tx, cur, fee_coin_id, C.MINTCOIN_FEE)
fee_coins = CoinObject(fee_coin_id, tx.gas_price * tx.gas_amount)
# check amount
check_enough_amount(sender, CoinObject(base_coin_id, amount), fee_coins)
# replace dummy address
replace_redeem_dummy_address(tx, cur)
# replace dummy mint_id
if amount > 0:
replace_mint_dummy_address(tx, mint_address, mint_id)
# 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 mint_new, tx
def issue_mintcoin(name,
unit,
amount,
digit,
cur,
gas_price=None,
message='',
additional_issue=True,
image=None,
sender=C.ANT_UNKNOWN):
mint = MintCoinObject(None)
new_mint_id = get_new_coin_id()
mint.version = 0
mint.coin_id = new_mint_id
mint.name = name
mint.unit = unit
mint.digit = digit
mint.supply_before = 0
mint.amount = amount
mint.additional_issue = additional_issue
new_mint_address = create_new_user_keypair(C.ANT_NAME_UNKNOWN, cur)
uuid, sk, pk = read_address2keypair(new_mint_address, cur)
mint.owner = pk
mint.image = image
mint.message = message
# Message内署名
mint.generate_sign(sk)
mint.serialize()
mint.check_param()
mint.check_sign()
logging.info("New Mintcoin skeleton created coin_id={}".format(
mint.coin_id))
# movement
movements = UserCoins()
minting_coins = CoinObject(new_mint_id, amount)
movements[sender] += minting_coins
movements[C.ANT_OUTSIDE] -= minting_coins
# TXを作成する
base_coin_id = 0
now = int(time.time()) - V.BLOCK_GENESIS_TIME
tx = TX(
tx={
'version': __chain_version__,
'type': C.TX_MINT_COIN,
'time': now,
'deadline': now + 10800,
'inputs': list(),
'outputs': [(MINTCOIN_DUMMY_ADDRESS, base_coin_id, amount)],
'gas_price': gas_price or V.COIN_MINIMUM_PRICE,
'gas_amount': 1,
'message_type': C.MSG_BYTE,
'message': mint.binary
})
tx.gas_amount = tx.getsize() + 96 + C.MINTCOIN_FEE
tx.serialize()
# fill unspents
fee_coin_id = 0
input_address = fill_inputs_outputs(tx, cur, fee_coin_id, C.MINTCOIN_FEE)
fee_coins = CoinObject(fee_coin_id, tx.gas_price * tx.gas_amount)
# check amount
check_enough_amount(sender, CoinObject(base_coin_id, amount), fee_coins)
# replace dummy address
replace_redeem_dummy_address(tx, cur)
# replace dummy mint_id
replace_mint_dummy_address(tx, new_mint_address, new_mint_id)
# 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 mint, tx
def fill_inputs_outputs(finish_tx,
c_address,
start_hash,
redeem_gas,
dust_percent=0.8,
utxo_cashe=None):
assert finish_tx.gas_price > 0, "Gas params is none zero."
# outputsの合計を取得
output_coins = CoinObject()
for address, coin_id, amount in finish_tx.outputs.copy():
if address == DUMMY_REDEEM_ADDRESS:
# 償還Outputは再構築するので消す
finish_tx.outputs.remove((address, coin_id, amount))
continue
output_coins[coin_id] += amount
# 一時的にfeeの概算
fee_coins = CoinObject(coin_id=0,
amount=finish_tx.gas_price * finish_tx.gas_amount)
# 必要なだけinputsを取得
finish_tx.inputs.clear()
need_coins = output_coins + fee_coins
input_coins = CoinObject()
f_dust_skipped = False
if utxo_cashe is None:
utxo_iter = get_utxo_iter({c_address})
utxo_cashe = list()
f_put_cashe = True
else:
utxo_iter = utxo_cashe
f_put_cashe = False
for dummy, height, txhash, txindex, coin_id, amount in utxo_iter:
if f_put_cashe:
utxo_cashe.append(
(dummy, height, txhash, txindex, coin_id, amount))
if coin_id not in need_coins:
continue
elif need_coins[coin_id] * dust_percent > amount:
f_dust_skipped = True
continue
need_coins[coin_id] -= amount
input_coins[coin_id] += amount
finish_tx.inputs.append((txhash, txindex))
if need_coins.is_all_minus_amount():
break
else:
if f_dust_skipped and dust_percent > 0.00001:
new_dust_percent = round(dust_percent * 0.7, 6)
logging.debug("Retry by lower dust percent. {}=>{}".format(
dust_percent, new_dust_percent))
return fill_inputs_outputs(finish_tx, c_address, start_hash,
redeem_gas, new_dust_percent)
elif len(finish_tx.inputs) > 255:
logging.debug(
'Too many inputs, unspent tx\'s amount is too small.')
return False
else:
# 失敗に変更
logging.debug('Insufficient balance. inputs={} needs={}'.format(
input_coins, need_coins))
return False
# redeemを計算
redeem_coins = input_coins - output_coins - fee_coins
for coin_id, amount in redeem_coins:
finish_tx.outputs.append((DUMMY_REDEEM_ADDRESS, coin_id, amount))
# Feeをチェックし再計算するか決める
finish_tx.serialize()
need_gas_amount = finish_tx.getsize() - redeem_gas
if finish_tx.gas_amount == need_gas_amount:
return True
elif need_gas_amount > 0:
# FINISH_TXのみGasは負の値
# Gas使いすぎ,失敗に変更
logging.debug(
'Too match gas used. need_gas={}'.format(need_gas_amount))
return False
else:
# insufficient gas
logging.debug("Retry calculate tx fee. [{}=>{}+{}={}]".format(
finish_tx.gas_amount, finish_tx.getsize(), redeem_gas,
need_gas_amount))
finish_tx.gas_amount = need_gas_amount
return fill_inputs_outputs(finish_tx, c_address, start_hash,
redeem_gas, dust_percent, utxo_cashe)
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 = UserCoins()
outputs = list()
coins = CoinObject()
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 = CoinObject(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 = CoinObject()
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
def check_tx_mint_coin(tx, include_block):
if not (0 < len(tx.inputs) and 0 < len(tx.outputs) <= 2):
raise BlockChainError('Input and output is more than 1.')
elif tx.message_type != C.MSG_BYTE:
raise BlockChainError('TX_MINT_COIN message is bytes.')
elif include_block and 0 == include_block.txs.index(tx):
raise BlockChainError('tx index is not proof tx.')
elif tx.gas_amount < tx.getsize() + C.MINTCOIN_FEE:
raise BlockChainError('Insufficient gas amount [{}<{}+{}]'.format(
tx.gas_amount, tx.getsize(), C.MINTCOIN_FEE))
coins = CoinObject()
for txhash, txindex in tx.inputs:
input_tx = tx_builder.get_tx(txhash)
if input_tx is None:
raise BlockChainError('Not found BaseTX {} of {}'.format(
hexlify(txhash).decode(), tx))
address, coin_id, amount = input_tx.outputs[txindex]
coins[coin_id] += amount
if coin_id != 0:
raise BlockChainError(
'TX_MINT_COIN inputs are all coinID 0. {}'.format(coin_id))
for address, coin_id, amount in tx.outputs:
coins[coin_id] -= amount
payfee_coin_id = 0
coins[payfee_coin_id] -= tx.gas_amount * tx.gas_price
if sum(coins.values()) < 0:
print(tx.getinfo())
raise BlockChainError('mintcoin amount sum is {}'.format(
sum(coins.values())))
mint = MintCoinObject(txhash=tx.hash, binary=tx.message)
mint_id = get_mint_id_from_tx(coins)
if mint_id:
# 追加発行あり
if set(coins.keys()) != {0, mint_id}:
raise BlockChainError('Allowed two coin_ids [{}!={}]'.format(
set(coins.keys()), {0, mint_id}))
if mint_id != mint.coin_id:
raise BlockChainError('Differ coin_id [{}!={}]'.format(
mint_id, mint.coin_id))
elif coins[mint_id] * -1 != mint.amount:
raise BlockChainError('Differ amount [{}!={}]'.format(
coins[mint_id] * -1, mint.amount))
else:
# 追加発行なし
if set(coins.keys()) != {0}:
raise BlockChainError('Allowed one coin_id [{}!={}]'.format(
set(coins.keys()), {0}))
if mint.amount != 0:
raise BlockChainError('No amount [{}!=0]'.format(mint.amount))
mint_id = mint.coin_id
try:
# 読み込んでおかしなところがなければOK
old_mint = get_mintcoin(mint_id=mint_id, best_block=include_block)
if include_block is None:
mint.marge(old_mint)
except MintCoinError as e:
raise BlockChainError('Failed check mint coin "{}"'.format(e))
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 = CoinObject(0, amount)
minting_coins = CoinObject(mint_id, amount)
else:
send_coins = CoinObject(0, 0)
minting_coins = CoinObject(0, 0)
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(m_before.address)
fee_coins = CoinObject(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 = UserCoins()
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 = CoinObject(coin_id=fee_coin_id,
amount=tx.gas_price * tx.gas_amount)
# check amount
check_enough_amount(sender=sender,
send_coins=CoinObject(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 = UserCoins()
minting_coins = CoinObject(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 fill_inputs_outputs(tx,
cur,
fee_coin_id=0,
additional_fee=0,
dust_percent=0.8,
utxo_cashe=None):
assert tx.gas_price > 0, "Gas params is none zero."
# outputsの合計を取得
output_coins = CoinObject()
for address, coin_id, amount in tx.outputs.copy():
if address == DUMMY_REDEEM_ADDRESS:
# 償還Outputは再構築するので消す
tx.outputs.remove((address, coin_id, amount))
continue
output_coins[coin_id] += amount
# 一時的にfeeの概算
fee_coins = CoinObject(coin_id=fee_coin_id,
amount=tx.gas_price * tx.gas_amount)
# 必要なだけinputsを取得
tx.inputs.clear()
need_coins = output_coins + fee_coins
input_coins = CoinObject()
input_address = set()
f_dust_skipped = False
if utxo_cashe is None:
utxo_iter = get_unspents_iter(cur)
utxo_cashe = list()
f_put_cashe = True
else:
utxo_iter = utxo_cashe
f_put_cashe = False
for address, height, txhash, txindex, coin_id, amount in utxo_iter:
if f_put_cashe:
utxo_cashe.append(
(address, height, txhash, txindex, coin_id, amount))
if coin_id not in need_coins:
continue
elif need_coins[coin_id] * dust_percent > amount:
f_dust_skipped = True
continue
need_coins[coin_id] -= amount
input_coins[coin_id] += amount
input_address.add(address)
tx.inputs.append((txhash, txindex))
if need_coins.is_all_minus_amount():
break
else:
if f_dust_skipped and dust_percent > 0.00001:
new_dust_percent = round(dust_percent * 0.7, 6)
logging.debug("Retry by lower dust percent. {}=>{}".format(
dust_percent, new_dust_percent))
return fill_inputs_outputs(tx, cur, fee_coin_id, additional_fee,
new_dust_percent, utxo_cashe)
elif len(tx.inputs) > 255:
raise BlockChainError(
'Too many inputs, unspent tx\'s amount is too small.')
else:
raise BlockChainError(
'Insufficient balance. inputs={} needs={}'.format(
input_coins, need_coins))
# redeemを計算
redeem_coins = input_coins - output_coins - fee_coins
for coin_id, amount in redeem_coins:
tx.outputs.append((DUMMY_REDEEM_ADDRESS, coin_id, amount))
# Feeをチェックし再計算するか決める
tx.serialize()
need_gas_amount = tx.getsize() + len(input_address) * 96 + additional_fee
if 0 <= tx.gas_amount - need_gas_amount < 10000:
# input/outputを混ぜる
return input_address
else:
# insufficient gas
logging.debug("Retry calculate tx fee. [{}=>{}+{}={}]".format(
tx.gas_amount,
tx.getsize() + len(input_address) * 96, additional_fee,
need_gas_amount))
tx.gas_amount = need_gas_amount
return fill_inputs_outputs(tx, cur, fee_coin_id, additional_fee,
dust_percent, utxo_cashe)