def from_json(web3: Web3, conf: str):
conf = json.loads(conf)
mom = DSGuard(web3, Address(conf['MCD_MOM']))
vat = Vat(web3, Address(conf['MCD_VAT']))
vow = Vow(web3, Address(conf['MCD_VOW']))
drip = Drip(web3, Address(conf['MCD_DRIP']))
pit = Pit(web3, Address(conf['MCD_PIT']))
cat = Cat(web3, Address(conf['MCD_CAT']))
flap = Flapper(web3, Address(conf['MCD_FLAP']))
flop = Flopper(web3, Address(conf['MCD_FLOP']))
dai = DSToken(web3, Address(conf['MCD_DAI']))
dai_adapter = DaiAdapter(web3, Address(conf['MCD_JOIN_DAI']))
dai_move = DaiVat(web3, Address(conf['MCD_MOVE_DAI']))
mkr = DSToken(web3, Address(conf['MCD_GOV']))
collaterals = []
for name in conf['COLLATERALS']:
collateral = Collateral(Ilk(name))
collateral.gem = DSToken(web3, Address(conf[name]))
collateral.adapter = GemAdapter(web3, Address(conf[f'MCD_JOIN_{name}']))
collateral.mover = GemVat(web3, Address(conf[f'MCD_MOVE_{name}']))
collateral.flipper = Flipper(web3, Address(conf[f'MCD_FLIP_{name}']))
collateral.pip = DSValue(web3, Address(conf[f'PIP_{name}']))
collateral.spotter = Spotter(web3, Address(conf[f'MCD_SPOT_{name}']))
collaterals.append(collateral)
return DssDeployment.Config(mom, vat, vow, drip, pit, cat, flap, flop, dai, dai_adapter, dai_move, mkr,
collaterals)
def skim(self, ilk: Ilk, address: Address) -> Transact:
"""Cancels undercollateralized CDP debt to determine collateral shortfall"""
assert isinstance(ilk, Ilk)
assert isinstance(address, Address)
return Transact(self, self.web3, self.abi, self.address,
self._contract, 'skim',
[ilk.toBytes(), address.address])
def open(self, ilk: Ilk, address: Address) -> Transact:
assert isinstance(ilk, Ilk)
assert isinstance(address, Address)
return Transact(self, self.web3, self.abi, self.address,
self._contract, 'open',
[ilk.toBytes(), address.address])
def from_json(web3: Web3, conf: str):
conf = json.loads(conf)
pause = DSPause(web3, Address(conf['MCD_PAUSE']))
vat = Vat(web3, Address(conf['MCD_VAT']))
vow = Vow(web3, Address(conf['MCD_VOW']))
jug = Jug(web3, Address(conf['MCD_JUG']))
cat = Cat(web3, Address(conf['MCD_CAT']))
dai = DSToken(web3, Address(conf['MCD_DAI']))
dai_adapter = DaiJoin(web3, Address(conf['MCD_JOIN_DAI']))
flapper = Flapper(web3, Address(conf['MCD_FLAP']))
flopper = Flopper(web3, Address(conf['MCD_FLOP']))
mkr = DSToken(web3, Address(conf['MCD_GOV']))
spotter = Spotter(web3, Address(conf['MCD_SPOT']))
collaterals = {}
for name in DssDeployment.Config._infer_collaterals_from_addresses(conf.keys()):
ilk = Ilk(name[0].replace('_', '-'))
if name[1] == "ETH":
gem = DSEthToken(web3, Address(conf[name[1]]))
else:
gem = DSToken(web3, Address(conf[name[1]]))
# TODO: If problematic, skip pip for deployments which use a medianizer.
collateral = Collateral(ilk=ilk, gem=gem,
adapter=GemJoin(web3, Address(conf[f'MCD_JOIN_{name[0]}'])),
flipper=Flipper(web3, Address(conf[f'MCD_FLIP_{name[0]}'])),
pip=DSValue(web3, Address(conf[f'PIP_{name[1]}'])))
collaterals[ilk.name] = collateral
return DssDeployment.Config(pause, vat, vow, jug, cat, flapper, flopper,
dai, dai_adapter, mkr, spotter, collaterals)
def test_ilk(self, mcd):
assert mcd.vat.ilk('XXX') == Ilk('XXX',
rate=Ray(0),
ink=Wad(0),
art=Wad(0),
spot=Ray(0),
line=Rad(0),
dust=Rad(0))
def test_ilk(self, mcd):
assert mcd.vat.ilk('XXX') == Ilk('XXX',
rate=Ray(0), ink=Wad(0), art=Wad(0), spot=Ray(0), line=Rad(0), dust=Rad(0))
ilk = mcd.collaterals["ETH-C"].ilk
assert ilk.line == Rad.from_number(1000000)
assert ilk.dust == Rad.from_number(20)
representation = repr(ilk)
assert "ETH-C" in representation
def from_json(web3: Web3, conf: str):
conf = json.loads(conf)
pause = DSPause(web3, Address(conf['MCD_PAUSE']))
vat = Vat(web3, Address(conf['MCD_VAT']))
vow = Vow(web3, Address(conf['MCD_VOW']))
jug = Jug(web3, Address(conf['MCD_JUG']))
cat = Cat(web3, Address(conf['MCD_CAT']))
dai = DSToken(web3, Address(conf['MCD_DAI']))
dai_adapter = DaiJoin(web3, Address(conf['MCD_JOIN_DAI']))
flapper = Flapper(web3, Address(conf['MCD_FLAP']))
flopper = Flopper(web3, Address(conf['MCD_FLOP']))
pot = Pot(web3, Address(conf['MCD_POT']))
mkr = DSToken(web3, Address(conf['MCD_GOV']))
spotter = Spotter(web3, Address(conf['MCD_SPOT']))
ds_chief = DSChief(web3, Address(conf['MCD_ADM']))
esm = ShutdownModule(web3, Address(conf['MCD_ESM']))
end = End(web3, Address(conf['MCD_END']))
proxy_registry = ProxyRegistry(web3,
Address(conf['PROXY_REGISTRY']))
dss_proxy_actions = DssProxyActionsDsr(
web3, Address(conf['PROXY_ACTIONS_DSR']))
collaterals = {}
for name in DssDeployment.Config._infer_collaterals_from_addresses(
conf.keys()):
ilk = Ilk(name[0].replace('_', '-'))
if name[1] == "ETH":
gem = DSEthToken(web3, Address(conf[name[1]]))
else:
gem = DSToken(web3, Address(conf[name[1]]))
# PIP contract may be a DSValue, OSM, or bogus address.
pip_address = Address(conf[f'PIP_{name[1]}'])
network = DssDeployment.NETWORKS.get(web3.net.version,
"testnet")
if network == "testnet":
pip = DSValue(web3, pip_address)
else:
pip = OSM(web3, pip_address)
collateral = Collateral(
ilk=ilk,
gem=gem,
adapter=GemJoin(web3,
Address(conf[f'MCD_JOIN_{name[0]}'])),
flipper=Flipper(web3,
Address(conf[f'MCD_FLIP_{name[0]}'])),
pip=pip)
collaterals[ilk.name] = collateral
return DssDeployment.Config(pause, vat, vow, jug, cat, flapper,
flopper, pot, dai, dai_adapter, mkr,
spotter, ds_chief, esm, end,
proxy_registry, dss_proxy_actions,
collaterals)
def deploy(web3: Web3, vat: Address, ilk: Ilk, gem: Address):
assert isinstance(web3, Web3)
assert isinstance(vat, Address)
assert isinstance(ilk, Ilk)
assert isinstance(gem, Address)
return GemMock(
web3=web3,
address=Contract._deploy(
web3, GemMock.abi, GemMock.bin,
[vat.address, ilk.toBytes(), gem.address]))
def flow(self, ilk: Ilk) -> Transact:
"""Calculate the `fix`, the cash price for a given collateral"""
assert isinstance(ilk, Ilk)
return Transact(self, self.web3, self.abi, self.address, self._contract, 'flow', [ilk.toBytes()])
def free(self, ilk: Ilk) -> Transact:
"""Releases excess collateral after `skim`ming"""
assert isinstance(ilk, Ilk)
return Transact(self, self.web3, self.abi, self.address, self._contract, 'free', [ilk.toBytes()])
def skip(self, ilk: Ilk, flip_id: int) -> Transact:
"""Cancel a flip auction and seize it's collateral"""
assert isinstance(ilk, Ilk)
assert isinstance(flip_id, int)
return Transact(self, self.web3, self.abi, self.address, self._contract, 'skip', [ilk.toBytes(), flip_id])
def cage(self, ilk: Ilk) -> Transact:
"""Set the `cage` price for the collateral"""
assert isinstance(ilk, Ilk)
return Transact(self, self.web3, self.abi, self.address, self._contract, 'cage(bytes32)', [ilk.toBytes()])
def out(self, ilk: Ilk, address: Address) -> Wad:
assert isinstance(ilk, Ilk)
assert isinstance(address, Address)
return Wad(self._contract.functions.out(ilk.toBytes(), address.address).call())
def fix(self, ilk: Ilk) -> Ray:
"""Final cash price for the collateral"""
assert isinstance(ilk, Ilk)
return Ray(self._contract.functions.fix(ilk.toBytes()).call())
def test_ilk(self, d: DssDeployment):
assert d.vat.ilk('XXX') == Ilk('XXX',
take=Ray(0),
rate=Ray(0),
ink=Wad(0),
art=Wad(0))
def gap(self, ilk: Ilk) -> Wad:
"""Collateral shortfall (difference of debt and collateral"""
assert isinstance(ilk, Ilk)
return Wad(self._contract.functions.gap(ilk.toBytes()).call())
def tag(self, ilk: Ilk) -> Ray:
"""Cage price for the collateral"""
assert isinstance(ilk, Ilk)
return Ray(self._contract.functions.tag(ilk.toBytes()).call())
def test_rely(self, d: DssDeployment, other_address: Address):
# when
assert d.vat.rely(other_address).transact()
# then
assert d.vat.init(Ilk('ETH')).transact(from_address=other_address)
def ilk(self):
return Ilk.fromBytes(self._contract.functions.ilk().call())
def cash(self, ilk: Ilk, dai: Wad):
"""Exchange an amount of dai (already `pack`ed in the `bag`) for collateral"""
assert isinstance(ilk, Ilk)
assert isinstance(dai, Wad)
return Transact(self, self.web3, self.abi, self.address, self._contract, 'cash', [ilk.toBytes(), dai.value])
def art(self, ilk: Ilk) -> Wad:
"""Total debt for the collateral"""
assert isinstance(ilk, Ilk)
return Wad(self._contract.functions.Art(ilk.toBytes()).call())
def ilk(self):
return Ilk.fromBytes(self._contract.call().ilk())
def ilk(self, cdpid: int) -> Ilk:
'''Returns Ilk for respective CDP ID'''
assert isinstance(cdpid, int)
ilk = Ilk.fromBytes(self._contract.functions.ilks(cdpid).call())
return ilk
