def cancel_all_offers(self):
# 取消当前交易对的所有委单
offers = self.handle_offers_data()
builder = Builder(secret=self.seed, network=self.network, horizon=self.horizon_url)
for offer in offers:
builder.append_manage_offer_op(selling_code=self.selling_asset.code,
selling_issuer=self.selling_asset.issuer,
buying_code=self.buying_asset.code,
buying_issuer=self.buying_asset.issuer,
amount='0',
price='1',
offer_id=offer['id'])
builder.sign()
builder.submit()
def create_offers(self):
# 创建挂单。这里是两个订单
# 买入价格 = 买一价 * (1 - buying_rate)
# 卖出价格 = 卖一价 * (1 + selling_rate)
market_price = self.get_price()
builder = Builder(secret=self.seed, network=self.network, horizon=self.horizon_url)
# 卖出 base_asset
selling_price = round(float(market_price['ask']) * (1 + self.selling_rate), 7)
builder.append_manage_offer_op(selling_code=self.selling_asset.code, selling_issuer=self.selling_asset.issuer,
buying_code=self.buying_asset.code,
buying_issuer=self.buying_asset.issuer,
amount=self.selling_amount, price=selling_price)
# 买入 base_asset
buying_tmp_price = float(market_price['bid']) * (1 - self.buying_rate)
buying_price = round(1 / buying_tmp_price, 7)
buying_amount = round(self.buying_amount * buying_tmp_price, 7)
builder.append_manage_offer_op(selling_code=self.buying_asset.code,
selling_issuer=self.buying_asset.issuer,
buying_code=self.selling_asset.code,
buying_issuer=self.selling_asset.issuer,
amount=buying_amount,
price=buying_price)
builder.sign()
builder.submit()
def make_offer( systemdb, source_name, asset_name, asset_source_name, amount, quote_name, quote_source_name, price, offer__id): q = Query() a_sk = systemdb.search(q.name == source_name)[0]['sk'] b = Builder(secret = a_sk, network = 'TESTNET') if asset_source_name == None: q_pk = systemdb.search(q.name == quote_source_name)[0]['pk'] b.append_manage_offer_op(asset_name, None, quote_name, q_pk, amount, price, offer_id = offer__id) elif quote_source_name == None: as_pk = systemdb.search(q.name == asset_source_name)[0]['pk'] b.append_manage_offer_op(asset_name, as_pk, quote_name, None, amount, price, offer_id = offer__id) else: as_pk = systemdb.search(q.name == asset_source_name)[0]['pk'] q_pk = systemdb.search(q.name == quote_source_name)[0]['pk'] b.append_manage_offer_op(asset_name, as_pk, quote_name, q_pk, amount, price, offer_id = offer__id) b.sign() response = b.submit() print response
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()
