def __init__(self, tub: Tub):
self.tub = tub
super().__init__(
source_token=self.tub.gem(),
target_token=self.tub.skr(),
rate=(Ray.from_number(1) / Ray(tub.ask(Wad.from_number(1)))),
max_source_amount=Wad.from_number(
1000000), #1 mio ETH = infinity ;)
method="tub.join()")
class DAIv1(Market):
def __init__(self, web3, dai_tub = '0x448a5065aeBB8E423F0896E6c5D525C040f59af3'):
self.web3 = web3
self.tub = Tub(web3=web3, address=Address(dai_tub))
self.tap = Tap(web3=web3, address=self.tub.tap())
self.tokens = {
'MKR': ERC20Token(web3, self.tub.gov()),
'PETH': ERC20Token(web3, self.tub.skr()),
'WETH': ERC20Token(web3, self.tub.gem()),
'DAI': ERC20Token(web3, self.tub.sai()),
}
def get_cup(self, cup_id):
cup = self.tub.cups(cup_id)
return { 'id': cup.cup_id,
'lad': cup.lad.address,
'art': float(cup.art),
'ink': float(cup.ink),
'safe': self.tub.safe(cup_id)
}
def get_cups(self):
last_cup_id = self.tub.cupi()
cups = map(self.get_cup, range(1, last_cup_id+1))
not_empty_cups = filter(lambda cup: cup['lad'] != "0x0000000000000000000000000000000000000000", cups)
return list(not_empty_cups)
def get_pairs(self):
pairs = ['PETH/DAI', 'PETH/WETH']
return pairs
def get_orders(self, base, quote):
depth = {'bids': [], 'asks': []}
# PETH/DAI order book
if base == 'PETH' and quote == 'DAI':
# boom is a taker using a bid side from maker tap
# a taker convert PETH to DAI using tap.bid(1) as price
# maker side offer DAI in exchange for PETH (flap)
# DAI qty offered by is min(joy - woe, 0)
order = { 'price': float(self.tap.bid(Wad.from_number(1))),
'amount': float(min(self.tap.joy() - self.tap.woe(), Wad.from_number(0))),
'id': 'take:tap.boom()',
}
if order['amount'] > 0:
depth['bids'].append(order)
# bust is a taker using ask side from maker tap
# a taker convert DAI to PETH using tap.ask(1) as price
# maker side offer PETH from fog (flip) and PETH minted to cover woe (flop)
# PETH qty offered by maker is fog+min(woe-joy, 0)/ask
order = { 'price': float(self.tap.ask(Wad.from_number(1))),
'amount': float(self.tap.fog() + min(self.tap.woe() - self.tap.joy(), Wad.from_number(0)) / self.tap.ask(Wad.from_number(1))),
'id': 'take:tap.bust()',
}
if order['amount'] > 0:
depth['asks'].append(order)
# PETH/WETH order book
if base == 'PETH' and quote == 'WETH':
# exit is a taker using a bid side from maker tub
# a taker PETH to WETH using tub.bid(1) as price
# maker side offer WETH in exchange for PETH
# WETH qty offered by maker is infinity (2**32 as a large number for infinity ...)
order = { 'price': float(self.tub.bid(Wad.from_number(1))),
'amount': float(2**32),
'id': 'take:tub.exit()',
}
depth['bids'].append(order)
# join is a taker using ask side from maker tub
# a taker convert WETH to PETH usgin tub.ask(1) as price
# maker side offer PETH in exchange for WETH
# PETH qty offered by maker is infinity (2**32 as a large number for infinity ...)
order = { 'price': float(self.tub.ask(Wad.from_number(1))),
'amount': float(2**32),
'id': 'take:tub.join()',
}
depth['asks'].append(order)
return depth
def get_accounts(self, manager_url):
accounts = {}
for addr in requests.get(manager_url).json():
accounts[addr] = {
'balance' : self.web3.eth.getBalance(addr),
}
accounts[addr]['tokens'] = {}
for name, token in self.tokens.items():
balance = token.balance_of(Address(addr))
allowance = token.allowance_of(Address(addr), self.tub.address)
#TODO check tap allowance ...
if float(allowance) or float(balance):
accounts[addr]['tokens'][name] = {
'allowance': float(allowance),
'balance': float(balance),
}
return accounts