def tx(self, account, cosigner_keypair, weight):
builder = Builder(address=account.get_info()['account_id'])
builder.append_set_options_op(
high_threshold=10,
low_threshold=1,
master_weight=10,
med_threshold=1,
signer_weight=weight,
signer_address=cosigner_keypair.address().decode(),
signer_type='ed25519PublicKey')
return builder.gen_te()
def call(self):
keypair = self.keypair()
builder = Builder(address=keypair.address().decode(),
sequence=self.random_sequence(),
secret=keypair.seed())
builder.sign()
builder.add_memo(self.memo())
builder.add_time_bounds(self.build_time_bounds())
builder.append_payment_op(source=Keypair.random(),
destination=keypair.address().decode(),
amount='0.000001')
builder.sign()
te = builder.gen_te()
return te.xdr()
def tx(self, account, asset):
builder = Builder(address=account['account_id'])
builder.append_op(ChangeTrust(opts={'asset': asset}))
return builder.gen_te()
tau_unix = int(time.mktime(tau.timetuple()))
tau_plus_delta = tau + datetime.timedelta(seconds=DELTA)
tau_plus_delta_unix = int(time.mktime(tau_plus_delta.timetuple()))
tx_timebound = TimeBounds(
minTime=tau_unix, maxTime=tau_plus_delta_unix)
counter_tx_timebound = TimeBounds(minTime=0, maxTime=tau_unix)
builder_t_1_1 = Builder(secret=kp_a_1_seed,
sequence=starting_sequence_a_1+1)
builder_t_1_1.append_payment_op(
kp_alice.address().decode(), PRIZE, 'XLM')
builder_t_1_1.append_payment_op(
kp_carol.address().decode(), PAWN, 'XLM')
builder_t_1_1.add_time_bounds(tx_timebound)
t_1_1 = builder_t_1_1.gen_tx()
hash_t_1_1 = builder_t_1_1.gen_te().hash_meta()
builder_t_1_2 = Builder(secret=kp_a_1_seed,
sequence=starting_sequence_a_1+1)
builder_t_1_2.append_payment_op(
kp_bob.address().decode(), COUNTERPRIZE, 'XLM')
builder_t_1_2.add_time_bounds(counter_tx_timebound)
t_1_2 = builder_t_1_2.gen_tx()
hash_t_1_2 = builder_t_1_2.gen_te().hash_meta()
builder_t_2_2 = Builder(secret=kp_a_2_seed,
sequence=starting_sequence_a_2+1)
builder_t_2_2.append_payment_op(
kp_bob.address().decode(), PRIZE, 'XLM')
builder_t_2_2.append_payment_op(
kp_carol.address().decode(), PAWN, 'XLM')
def build_te(self):
builder = Builder(address=self.user_account.get_info()['account_id'])
te = builder.gen_te()
return te
def genptxs(
systemdb,
timestamp):
"""generates contract ptxs 1-3 given systemdb, including a contract manifest
in production, will add ptxs will be hosted along with manifest on e.g. IPFS
"""
q = Query()
a_sk = systemdb.search(q.name == 'Contract')[0]['sk']
a_pk = systemdb.search(q.name == 'Contract')[0]['pk']
pr_pk = systemdb.search(q.name == 'Printer')[0]['pk']
pi_pk = systemdb.search(q.name == 'Pipe')[0]['pk']
UND = systemdb.search(q.type == 'manifest')[0]['UND']
UND_pk = systemdb.search(q.type == 'manifest')[0]['UND_source']
QUO = systemdb.search(q.type == 'manifest')[0]['QUO']
QUO_pk = systemdb.search(q.type == 'manifest')[0]['QUO_source']
strike = systemdb.search(q.type == 'manifest')[0]['strike']
size = systemdb.search(q.type == 'manifest')[0]['size']
address = Address(address=a_pk, network='TESTNET')
address.get()
####2 PREAUTH TX ONE #####
b = Builder(
secret = str(a_sk),
horizon_uri = 'https://horizon.stellar.org',
network = 'TESTNET',
sequence = int(address.sequence)+3)
"""seq incremented by two bc acct will need to add hash signer, data entry, and lock
"""
strikeXsize = str(int(strike)*int(size))
b.append_payment_op(pr_pk, '0.5', 'OCA', pr_pk)
if QUO_pk == None:
b.append_payment_op(pi_pk, strikeXsize, QUO, asset_issuer=None)
else:
b.append_payment_op(pi_pk, strikeXsize, QUO, QUO_pk)
b.append_manage_offer_op('SPA', pr_pk, 'OCA', pr_pk, '0.0000001', '5000000', offer_id=0)
b.append_manage_offer_op('GTA', pr_pk, 'SPA', pr_pk, '1', '0.0000001', offer_id=0)
price = str(float(1)/int(size))
b.append_manage_offer_op(UND, UND_pk, 'GTA', pr_pk, str(size), price, offer_id=0)
envelope1 = b.gen_te()
hashish1 = envelope1.hash_meta()
xdr1 = b.gen_xdr()
systemdb.insert({
'type': 'ptx',
'name': 'ptx1',
'xdr': xdr1
})
####2 PREAUTH TX TWO #####
b2 = Builder(
secret = a_sk,
horizon_uri ='https://horizon.stellar.org',
network = 'TESTNET',
sequence = int(address.sequence)+3)
b2.append_payment_op(pi_pk, str(strike), UND, UND_pk)
b2.append_set_options_op(master_weight=1, low_threshold=0, med_threshold=0, high_threshold=0)
envelope2 = b2.gen_te()
hashish2 = envelope2.hash_meta()
xdr2 = b2.gen_xdr()
systemdb.insert({
'type': 'ptx',
'name': 'ptx2',
'xdr': xdr2
})
####2 PREAUTH TX THREE #####
b3 = Builder(
secret = a_sk,
horizon_uri ='https://horizon.stellar.org',
network = 'TESTNET',
sequence = int(address.sequence)+4)
b3.append_set_options_op(master_weight=1, low_threshold=0, med_threshold=0, high_threshold=0)
envelope3 = b3.gen_te()
hashish3 = envelope3.hash_meta()
xdr3 = b3.gen_xdr()
systemdb.insert({
'type': 'ptx',
'name': 'ptx3',
'xdr': xdr3
})
bX = Builder(secret = a_sk, network='TESTNET')
bX.append_pre_auth_tx_signer(hashish1, 1, source=None)
bX.append_pre_auth_tx_signer(hashish2, 1, source=None)
bX.append_pre_auth_tx_signer(hashish3, 1, source=None)
bX.sign()
print bX.submit()