def __init__(self, from_addr, to_addr, amount, utxo_set):
inputs = []
outputs = []
wallets = ws.Wallets()
wallet = wallets.get_wallet(from_addr)
pubkey_hash = utils.hash_public_key(wallet.public_key)
acc, valid_outputs = utxo_set.find_spendable_outputs(
pubkey_hash, amount)
if acc < amount:
print('Not enough funds')
sys.exit()
# inputs
for tx_id, outs in valid_outputs.items():
for out in outs:
input = TXInput(tx_id, out, None, wallet.public_key)
inputs.append(input)
# outputs
outputs.append(TXOutput(amount, to_addr))
if acc > amount:
outputs.append(TXOutput(acc - amount, from_addr))
self._tx = Transaction(None, inputs, outputs).set_id()
self._utxo_set = utxo_set
self._sign_utxo(wallet.private_key)
print('Signing complete\n')
def send(from_addr, to_addr, amount):
bc = Blockchain()
utxo_set = UTXOSet(bc)
tx = UTXOTx(from_addr, to_addr, amount, utxo_set)
inputs = []
outputs = []
for vin in tx.vin:
ctxin = TXInput()
ctxin._tx_id = vin.tx_id
ctxin._vin = vin.vout
ctxin._sig = vin.signature
ctxin._public_key = vin.public_key
inputs.append(ctxin)
for vout in tx.vout:
outputs.append(TXOutput(vout.value, vout.address))
txnew = Transaction()
txnew._id = tx.ID
txnew._vin = inputs
txnew._vout = outputs
return txnew
def __init__(self, to, data=None):
if not data:
data = 'Reward to {0}'.format(to)
tx_id = None
vin = [TXInput('', -1, None, data)]
vout = [TXOutput(TXOutput.subsidy, to)]
self._tx = Transaction(tx_id, vin, vout).set_id()
def __init__(self, to_account, data=None):
if data == None:
data = ''.join(
random.sample(string.ascii_letters + string.digits, 20))
vins = [TXInput(None, -1, data)]
vouts = [TXOutput(to_account, CoinbaseTx.subsidy)]
super(CoinbaseTx, self).__init__(vins, vouts)
def __init__(self, to, data=None):
if not data:
# data = 'Reward to {0}'.format(to)
data = ''.join(random.choice(
string.ascii_uppercase + string.digits) for _ in range(20))
tx_id = None
vin = [TXInput('', -1, None, data)]
vout = [TXOutput(TXOutput.subsidy, to)]
self._tx = Transaction(tx_id, vin, vout).set_id()
def _trimmed_copy(self):
inputs = []
outputs = []
for vin in self.vin:
inputs.append(TXInput(vin.tx_id, vin.vout, None, None))
for vout in self.vout:
outputs.append(TXOutput(vout.value, vout.address))
return Transaction(self.ID, inputs, outputs)
def __init__(self, from_addr, to_addr, amount, utxo_set):
inputs = []
outputs = []
# log('UTXOTx')
wallets = ws.Wallets()
wallet = wallets.get_wallet(from_addr)
pubkey_hash = utils.hash_public_key(wallet.public_key)
acc, valid_outputs = utxo_set.find_spendable_outputs(
pubkey_hash, amount)
if acc < amount:
# log.error('Not enough funds')
utils.logg('Not enough funds')
sys.exit()
# Build a list of inputs
for tx_id, outs in valid_outputs.items():
for out in outs:
ctxin = TXInput()
ctxin._tx_id = tx_id
ctxin._vout = out
ctxin._signature = None
ctxin._public_key = wallet.public_key
inputs.append(ctxin)
# Build a list of outputs
outputs.append(TXOutput(amount, to_addr))
if acc > amount:
# A change
outputs.append(TXOutput(acc-amount, from_addr))
self._tx = Transaction()
self._tx.vin = inputs
self._tx.vout = outputs
self._tx.set_id()
self._utxo_set = utxo_set
self._sign_utxo(wallet.private_key)
def __init__(self, from_account, to_account, amount, blockchain):
inputs = []
outputs = []
acc, valid_outputs = blockchain.find_spendable_outputs(
from_account, amount)
if acc < amount:
raise NotEnoughFundsError()
# 构建交易输入列表
for tx_id, outs in valid_outputs.items():
for idx, out in enumerate(outs):
input = TXInput(tx_id, idx, from_account)
inputs.append(input)
# 构建交易输出列表
outputs.append(TXOutput(to_account, amount))
# 找零
if acc > amount:
outputs.append(TXOutput(from_account, acc - amount))
super(UTXOTransaction, self).__init__(inputs, outputs)
def _trimmed_copy(self):
inputs = []
outputs = []
for vin in self.vin:
ctxin = TXInput()
ctxin._tx_id = vin.tx_id
ctxin._vin = vin.vout
ctxin._sig = None
ctxin._public_key = None
inputs.append(ctxin)
for vout in self.vout:
outputs.append(TXOutput(vout.value, vout.address))
txnew = Transaction()
txnew._id = self.ID
txnew._vin = inputs
txnew._vout = outputs
return txnew
def __init__(self, tx_id=None, vin=None, vout=None):
self._id = tx_id
self._vin = [TXInput()]
self._vout = [TXOutput()]