class OasisMarketMakerKeeper:
"""Keeper acting as a market maker on OasisDEX, on the W-ETH/SAI pair."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='oasis-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout",
type=int,
default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address",
type=str,
required=True,
help="Ethereum address of the Tub contract")
parser.add_argument("--oasis-address",
type=str,
required=True,
help="Ethereum address of the OasisDEX contract")
parser.add_argument("--config",
type=str,
required=True,
help="Bands configuration file")
parser.add_argument("--price-feed",
type=str,
required=True,
help="Source of price feed")
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument(
"--round-places",
type=int,
default=2,
help="Number of decimal places to round order prices to (default=2)"
)
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help="Minimum ETH balance below which keeper will cease operation")
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument(
"--smart-gas-price",
dest='smart_gas_price',
action='store_true',
help=
"Use smart gas pricing strategy, based on the ethgasstation.info feed"
)
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
setup_logging(self.arguments)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.otc = MatchingMarket(web3=self.web3,
address=Address(
self.arguments.oasis_address))
self.tub = Tub(web3=self.web3,
address=Address(self.arguments.tub_address))
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.gem = ERC20Token(web3=self.web3, address=self.tub.gem())
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.bands_config = ReloadableConfig(self.arguments.config)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry,
self.tub)
self.order_book_manager = OrderBookManager(refresh_frequency=3)
self.order_book_manager.get_orders_with(lambda: self.our_orders())
self.order_book_manager.start()
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.on_block(self.on_block)
lifecycle.every(3, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
self.cancel_all_orders()
def on_block(self):
# This method is present only so the lifecycle binds the new block listener, which makes
# it then terminate the keeper if no new blocks have been arriving for 300 seconds.
pass
def approve(self):
"""Approve OasisDEX to access our balances, so we can place orders."""
self.otc.approve(
[self.token_sell(), self.token_buy()],
directly(gas_price=self.gas_price))
def price(self) -> Wad:
return self.price_feed.get_price()
def token_sell(self) -> ERC20Token:
return self.gem
def token_buy(self) -> ERC20Token:
return self.sai
def our_available_balance(self, token: ERC20Token) -> Wad:
return token.balance_of(self.our_address)
def our_orders(self):
return list(
filter(
lambda order: order.maker == self.our_address,
self.otc.get_orders(self.token_sell().address,
self.token_buy().address) +
self.otc.get_orders(self.token_buy().address,
self.token_sell().address)))
def our_sell_orders(self, our_orders: list):
return list(
filter(
lambda order: order.buy_token == self.token_buy().address and
order.pay_token == self.token_sell().address, our_orders))
def our_buy_orders(self, our_orders: list):
return list(
filter(
lambda order: order.buy_token == self.token_sell().address and
order.pay_token == self.token_buy().address, our_orders))
def synchronize_orders(self):
# If market is closed, cancel all orders but do not terminate the keeper.
if self.otc.is_closed():
self.logger.warning("Market is closed. Cancelling all orders.")
self.cancel_all_orders()
return
# If keeper balance is below `--min-eth-balance`, cancel all orders but do not terminate
# the keeper, keep processing blocks as the moment the keeper gets a top-up it should
# resume activity straight away, without the need to restart it.
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(
"Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_all_orders()
return
bands = Bands(self.bands_config)
order_book = self.order_book_manager.get_order_book()
target_price = self.price()
# If the is no target price feed, cancel all orders but do not terminate the keeper.
# The moment the price feed comes back, the keeper will resume placing orders.
if target_price is None:
self.logger.warning(
"No price feed available. Cancelling all orders.")
self.cancel_all_orders()
return
# If there are any orders to be cancelled, cancel them. It is deliberate that we wait with topping-up
# bands until the next block. This way we would create new orders based on the most recent price and
# order book state. We could theoretically retrieve both (`target_price` and `our_orders`) again here,
# but it just seems cleaner to do it in one place instead of in two.
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(order_book.orders),
our_sell_orders=self.our_sell_orders(order_book.orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Do not place new orders if order book state is not confirmed
if order_book.orders_being_placed or order_book.orders_being_cancelled:
self.logger.debug(
"Order book is in progress, not placing new orders")
return
# Place new orders
self.create_orders(
bands.new_orders(
our_buy_orders=self.our_buy_orders(order_book.orders),
our_sell_orders=self.our_sell_orders(order_book.orders),
our_buy_balance=self.our_available_balance(self.token_buy()),
our_sell_balance=self.our_available_balance(self.token_sell()),
target_price=target_price)[0])
def cancel_all_orders(self):
# Wait for the order book to stabilize
while True:
order_book = self.order_book_manager.get_order_book()
if not order_book.orders_being_cancelled and not order_book.orders_being_placed:
break
# Cancel all open orders
self.cancel_orders(self.order_book_manager.get_order_book().orders)
self.order_book_manager.wait_for_order_cancellation()
def cancel_orders(self, orders):
for order in orders:
self.order_book_manager.cancel_order(
order.order_id, lambda: self.otc.kill(order.order_id).transact(
gas_price=self.gas_price).successful)
def create_orders(self, new_orders):
def place_order_function(new_order: NewOrder):
assert (isinstance(new_order, NewOrder))
if new_order.is_sell:
pay_token = self.token_sell().address
buy_token = self.token_buy().address
else:
pay_token = self.token_buy().address
buy_token = self.token_sell().address
transact = self.otc.make(pay_token=pay_token,
pay_amount=new_order.pay_amount,
buy_token=buy_token,
buy_amount=new_order.buy_amount).transact(
gas_price=self.gas_price)
if transact is not None and transact.successful and transact.result is not None:
return Order(market=self.otc,
order_id=transact.result,
maker=self.our_address,
pay_token=pay_token,
pay_amount=new_order.pay_amount,
buy_token=buy_token,
buy_amount=new_order.buy_amount,
timestamp=0)
else:
return None
for new_order in new_orders:
self.order_book_manager.place_order(
lambda: place_order_function(new_order))
class OkexMarketMakerKeeper:
"""Keeper acting as a market maker on OKEX."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='okex-market-maker-keeper')
parser.add_argument(
"--okex-api-server",
type=str,
default="https://www.okex.com",
help=
"Address of the OKEX API server (default: 'https://www.okex.com')")
parser.add_argument("--okex-api-key",
type=str,
required=True,
help="API key for the OKEX API")
parser.add_argument("--okex-secret-key",
type=str,
required=True,
help="Secret key for the OKEX API")
parser.add_argument(
"--pair",
type=str,
required=True,
help="Token pair on which the keeper should operate")
parser.add_argument("--config",
type=str,
required=True,
help="Buy/sell bands configuration file")
parser.add_argument("--price-feed",
type=str,
help="Source of price feed")
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
logging.basicConfig(
format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
logging.getLogger('urllib3.connectionpool').setLevel(logging.INFO)
logging.getLogger('requests.packages.urllib3.connectionpool').setLevel(
logging.INFO)
self.bands_config = ReloadableConfig(self.arguments.config)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry)
self.okex_api = OKEXApi(api_server=self.arguments.okex_api_server,
api_key=self.arguments.okex_api_key,
secret_key=self.arguments.okex_secret_key,
timeout=9.5)
def main(self):
with Lifecycle() as lifecycle:
lifecycle.on_startup(self.startup)
lifecycle.every(1, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.our_orders()
self.logger.info(f"OKEX API key seems to be valid")
self.logger.info(
f"Keeper configured to work on the '{self.pair()}' pair")
def shutdown(self):
self.cancel_orders(self.our_orders())
def pair(self):
return self.arguments.pair.lower()
def token_sell(self) -> str:
return self.arguments.pair.split('_')[0].lower()
def token_buy(self) -> str:
return self.arguments.pair.split('_')[1].lower()
def our_balances(self) -> dict:
return self.okex_api.get_balances()
def our_balance(self, our_balances: dict, token: str) -> Wad:
return Wad.from_number(our_balances['free'][token])
def our_orders(self) -> list:
return self.okex_api.get_orders(self.pair())
def our_sell_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.is_sell, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(filter(lambda order: not order.is_sell, our_orders))
def synchronize_orders(self):
bands = Bands(self.bands_config)
our_balances = self.our_balances()
our_orders = self.our_orders()
target_price = self.price_feed.get_price()
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_orders(our_orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Place new orders
self.create_orders(
bands.new_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=self.our_balance(our_balances,
self.token_buy()),
our_sell_balance=self.our_balance(our_balances,
self.token_sell()),
target_price=target_price))
def cancel_orders(self, orders):
for order in orders:
self.okex_api.cancel_order(self.pair(), order.order_id)
def create_orders(self, orders):
for order in orders:
amount = order.pay_amount if order.is_sell else order.buy_amount
self.okex_api.place_order(pair=self.pair(),
is_sell=order.is_sell,
price=order.price,
amount=amount)
class ParadexMarketMakerKeeper:
"""Keeper acting as a market maker on Paradex."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='paradex-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout",
type=int,
default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument(
"--eth-key-file",
type=str,
required=True,
help="File with the private key file for the Ethereum account")
parser.add_argument(
"--eth-password-file",
type=str,
required=True,
help="File with the private key password for the Ethereum account")
parser.add_argument(
"--exchange-address",
type=str,
required=True,
help="Ethereum address of the 0x Exchange contract")
parser.add_argument(
"--paradex-api-server",
type=str,
default='https://api.paradex.io/consumer',
help=
"Address of the Paradex API (default: 'https://api.paradex.io/consumer')"
)
parser.add_argument("--paradex-api-key",
type=str,
required=True,
help="API key for the Paradex API")
parser.add_argument(
"--paradex-api-timeout",
type=float,
default=9.5,
help=
"Timeout for accessing the Paradex API (in seconds, default: 9.5)")
parser.add_argument(
"--pair",
type=str,
required=True,
help="Token pair (sell/buy) on which the keeper will operate")
parser.add_argument("--buy-token-address",
type=str,
required=True,
help="Ethereum address of the buy token")
parser.add_argument("--sell-token-address",
type=str,
required=True,
help="Ethereum address of the sell token")
parser.add_argument("--config",
type=str,
required=True,
help="Bands configuration file")
parser.add_argument("--price-feed",
type=str,
required=True,
help="Source of price feed")
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument(
"--order-expiry",
type=int,
required=True,
help="Expiration time of created orders (in seconds)")
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help="Minimum ETH balance below which keeper will cease operation")
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument(
"--smart-gas-price",
dest='smart_gas_price',
action='store_true',
help=
"Use smart gas pricing strategy, based on the ethgasstation.info feed"
)
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
setup_logging(self.arguments)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.bands_config = ReloadableConfig(self.arguments.config)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry)
self.zrx_exchange = ZrxExchange(web3=self.web3,
address=Address(
self.arguments.exchange_address))
self.paradex_api = ParadexApi(
self.zrx_exchange, self.arguments.paradex_api_server,
self.arguments.paradex_api_key, self.arguments.paradex_api_timeout,
self.arguments.eth_key_file,
self.read_password(self.arguments.eth_password_file))
@staticmethod
def read_password(filename: str):
with open(filename) as file:
return "".join(line.rstrip() for line in file)
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.every(3, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
self.cancel_orders(self.our_orders())
def approve(self):
self.zrx_exchange.approve(
[self.token_sell(), self.token_buy()],
directly(gas_price=self.gas_price))
def price(self) -> Wad:
return self.price_feed.get_price()
def pair(self):
return self.arguments.pair.upper()
def token_sell(self) -> ERC20Token:
return ERC20Token(web3=self.web3,
address=Address(self.arguments.sell_token_address))
def token_buy(self) -> ERC20Token:
return ERC20Token(web3=self.web3,
address=Address(self.arguments.buy_token_address))
def our_total_balance(self, token: ERC20Token) -> Wad:
return token.balance_of(self.our_address)
def our_orders(self) -> list:
return self.paradex_api.get_orders(self.pair())
def our_sell_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.is_sell, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(filter(lambda order: not order.is_sell, our_orders))
def synchronize_orders(self):
"""Update our positions in the order book to reflect keeper parameters."""
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(
"Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_orders(self.our_orders())
return
bands = Bands(self.bands_config)
our_orders = self.our_orders()
target_price = self.price()
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_orders(our_orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# In case of Paradex, balances returned by `our_total_balance` still contain amounts "locked"
# by currently open orders, so we need to explicitly subtract these amounts.
our_buy_balance = self.our_total_balance(
self.token_buy()) - Bands.total_amount(
self.our_buy_orders(our_orders))
our_sell_balance = self.our_total_balance(
self.token_sell()) - Bands.total_amount(
self.our_sell_orders(our_orders))
# Place new orders
self.create_orders(
bands.new_orders(our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=our_buy_balance,
our_sell_balance=our_sell_balance,
target_price=target_price)[0])
def cancel_orders(self, orders):
for order in orders:
self.paradex_api.cancel_order(order.order_id)
def create_orders(self, orders):
for order in orders:
amount = order.pay_amount if order.is_sell else order.buy_amount
self.paradex_api.place_order(self.pair(), order.is_sell,
order.price, amount,
self.arguments.order_expiry)
exit(-1)
class EtherDeltaMarketMakerKeeper:
"""Keeper acting as a market maker on EtherDelta, on the ETH/SAI pair."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='etherdelta-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout",
type=int,
default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address",
type=str,
required=True,
help="Ethereum address of the Tub contract")
parser.add_argument("--etherdelta-address",
type=str,
required=True,
help="Ethereum address of the EtherDelta contract")
parser.add_argument(
"--etherdelta-socket",
type=str,
required=True,
help="Ethereum address of the EtherDelta API socket")
parser.add_argument(
"--etherdelta-number-of-attempts",
type=int,
default=3,
help=
"Number of attempts of running the tool to talk to the EtherDelta API socket"
)
parser.add_argument(
"--etherdelta-retry-interval",
type=int,
default=10,
help=
"Retry interval for sending orders over the EtherDelta API socket")
parser.add_argument(
"--etherdelta-timeout",
type=int,
default=120,
help="Timeout for sending orders over the EtherDelta API socket")
parser.add_argument("--config",
type=str,
required=True,
help="Buy/sell bands configuration file")
parser.add_argument(
"--price-feed",
type=str,
help=
"Source of price feed. Tub price feed will be used if not specified"
)
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of non-Tub price feed (in seconds, default: 120)"
)
parser.add_argument("--order-age",
type=int,
required=True,
help="Age of created orders (in blocks)")
parser.add_argument(
"--order-expiry-threshold",
type=int,
default=0,
help=
"Remaining order age (in blocks) at which order is considered already expired, which"
" means the keeper will send a new replacement order slightly ahead"
)
parser.add_argument(
"--order-no-cancel-threshold",
type=int,
default=0,
help=
"Remaining order age (in blocks) below which keeper does not try to cancel orders,"
" assuming that they will probably expire before the cancel transaction gets mined"
)
parser.add_argument(
"--eth-reserve",
type=float,
required=True,
help=
"Amount of ETH which will never be deposited so the keeper can cover gas"
)
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help=
"Minimum ETH balance below which keeper with either terminate or not start at all"
)
parser.add_argument(
"--min-eth-deposit",
type=float,
required=True,
help=
"Minimum amount of ETH that can be deposited in one transaction")
parser.add_argument(
"--min-sai-deposit",
type=float,
required=True,
help=
"Minimum amount of SAI that can be deposited in one transaction")
parser.add_argument(
'--cancel-on-shutdown',
dest='cancel_on_shutdown',
action='store_true',
help=
"Whether should cancel all open orders on EtherDelta on keeper shutdown"
)
parser.add_argument(
'--withdraw-on-shutdown',
dest='withdraw_on_shutdown',
action='store_true',
help=
"Whether should withdraw all tokens from EtherDelta on keeper shutdown"
)
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument(
"--gas-price-increase",
type=int,
help="Gas price increase (in Wei) if no confirmation within"
" `--gas-price-increase-every` seconds")
parser.add_argument(
"--gas-price-increase-every",
type=int,
default=120,
help="Gas price increase frequency (in seconds, default: 120)")
parser.add_argument("--gas-price-max",
type=int,
help="Maximum gas price (in Wei)")
parser.add_argument("--gas-price-file",
type=str,
help="Gas price configuration file")
parser.add_argument(
"--smart-gas-price",
dest='smart_gas_price',
action='store_true',
help=
"Use smart gas pricing strategy, based on the ethgasstation.info feed"
)
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
parser.set_defaults(cancel_on_shutdown=False,
withdraw_on_shutdown=False)
self.arguments = parser.parse_args(args)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.tub = Tub(web3=self.web3,
address=Address(self.arguments.tub_address))
self.vox = Vox(web3=self.web3, address=self.tub.vox())
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.gem = ERC20Token(web3=self.web3, address=self.tub.gem())
logging.basicConfig(
format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
logging.getLogger('urllib3.connectionpool').setLevel(logging.INFO)
logging.getLogger('requests.packages.urllib3.connectionpool').setLevel(
logging.INFO)
self.bands_config = ReloadableConfig(self.arguments.config)
self.eth_reserve = Wad.from_number(self.arguments.eth_reserve)
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.min_eth_deposit = Wad.from_number(self.arguments.min_eth_deposit)
self.min_sai_deposit = Wad.from_number(self.arguments.min_sai_deposit)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry,
self.tub, self.vox)
if self.eth_reserve <= self.min_eth_balance:
raise Exception(
"--eth-reserve must be higher than --min-eth-balance")
assert (self.arguments.order_expiry_threshold >= 0)
assert (self.arguments.order_no_cancel_threshold >=
self.arguments.order_expiry_threshold)
self.etherdelta = EtherDelta(web3=self.web3,
address=Address(
self.arguments.etherdelta_address))
self.etherdelta_api = EtherDeltaApi(
client_tool_directory="lib/pymaker/utils/etherdelta-client",
client_tool_command="node main.js",
api_server=self.arguments.etherdelta_socket,
number_of_attempts=self.arguments.etherdelta_number_of_attempts,
retry_interval=self.arguments.etherdelta_retry_interval,
timeout=self.arguments.etherdelta_timeout)
self.our_orders = list()
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.on_block(self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
if self.arguments.cancel_on_shutdown:
self.cancel_all_orders()
if self.arguments.withdraw_on_shutdown:
self.withdraw_everything()
def approve(self):
"""Approve EtherDelta to access our tokens, so we can deposit them with the exchange"""
token_addresses = filter(
lambda address: address != EtherDelta.ETH_TOKEN,
[self.token_sell(), self.token_buy()])
tokens = list(
map(lambda address: ERC20Token(web3=self.web3, address=address),
token_addresses))
self.etherdelta.approve(tokens, directly(gas_price=self.gas_price))
def place_order(self, order: Order):
self.our_orders.append(order)
self.etherdelta_api.publish_order(order)
def price(self) -> Wad:
return self.price_feed.get_price()
def token_sell(self) -> Address:
return EtherDelta.ETH_TOKEN
def token_buy(self) -> Address:
return self.sai.address
def our_balance(self, token: Address) -> Wad:
if token == EtherDelta.ETH_TOKEN:
return self.etherdelta.balance_of(self.our_address)
else:
return self.etherdelta.balance_of_token(token, self.our_address)
def our_sell_orders(self):
return list(
filter(
lambda order: order.buy_token == self.token_buy() and order.
pay_token == self.token_sell(), self.our_orders))
def our_buy_orders(self):
return list(
filter(
lambda order: order.buy_token == self.token_sell() and order.
pay_token == self.token_buy(), self.our_orders))
def synchronize_orders(self):
# If keeper balance is below `--min-eth-balance`, cancel all orders but do not terminate
# the keeper, keep processing blocks as the moment the keeper gets a top-up it should
# resume activity straight away, without the need to restart it.
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(
"Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_all_orders()
return
bands = Bands(self.bands_config)
block_number = self.web3.eth.blockNumber
target_price = self.price()
# If the is no target price feed, cancel all orders but do not terminate the keeper.
# The moment the price feed comes back, the keeper will resume placing orders.
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_all_orders()
return
# Remove expired orders from the local order list
self.remove_expired_orders(block_number)
# Cancel orders
cancellable_orders = bands.cancellable_orders(self.our_buy_orders(),
self.our_sell_orders(),
target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders, block_number)
return
# Place new orders
self.top_up_bands(bands.buy_bands, bands.sell_bands, target_price)
@staticmethod
def is_order_age_above_threshold(order: Order, block_number: int,
threshold: int):
return block_number >= order.expires - threshold # we do >= 0, which makes us effectively detect an order
# as expired one block earlier than the contract, but
# this is desirable from the keeper point of view
def is_expired(self, order: Order, block_number: int):
return self.is_order_age_above_threshold(
order, block_number, self.arguments.order_expiry_threshold)
def is_non_cancellable(self, order: Order, block_number: int):
return self.is_order_age_above_threshold(
order, block_number, self.arguments.order_no_cancel_threshold)
def remove_expired_orders(self, block_number: int):
self.our_orders = list(
filter(lambda order: not self.is_expired(order, block_number),
self.our_orders))
def cancel_orders(self, orders: Iterable, block_number: int):
"""Cancel orders asynchronously."""
cancellable_orders = list(
filter(
lambda order: not self.is_non_cancellable(order, block_number),
orders))
synchronize([
self.etherdelta.cancel_order(order).transact_async(
gas_price=self.gas_price) for order in cancellable_orders
])
self.our_orders = list(set(self.our_orders) - set(cancellable_orders))
def cancel_all_orders(self):
"""Cancel all our orders."""
self.cancel_orders(self.our_orders, self.web3.eth.blockNumber)
def withdraw_everything(self):
eth_balance = self.etherdelta.balance_of(self.our_address)
if eth_balance > Wad(0):
self.etherdelta.withdraw(eth_balance).transact(
gas_price=self.gas_price)
sai_balance = self.etherdelta.balance_of_token(self.sai.address,
self.our_address)
if sai_balance > Wad(0):
self.etherdelta.withdraw_token(self.sai.address,
sai_balance).transact()
def top_up_bands(self, buy_bands: list, sell_bands: list,
target_price: Wad):
"""Create new buy and sell orders in all send and buy bands if necessary."""
self.top_up_buy_bands(buy_bands, target_price)
self.top_up_sell_bands(sell_bands, target_price)
def top_up_sell_bands(self, sell_bands: list, target_price: Wad):
"""Ensure our sell engagement is not below minimum in all sell bands. Place new orders if necessary."""
our_balance = self.our_balance(self.token_sell())
for band in sell_bands:
orders = [
order for order in self.our_sell_orders()
if band.includes(order, target_price)
]
total_amount = self.total_amount(orders)
if total_amount < band.min_amount:
if self.deposit_for_sell_order_if_needed(band.avg_amount -
total_amount):
return
price = band.avg_price(target_price)
pay_amount = self.fix_amount(
Wad.min(
band.avg_amount - total_amount, our_balance -
self.total_amount(self.our_sell_orders())))
buy_amount = self.fix_amount(pay_amount * price)
if (pay_amount >= band.dust_cutoff) and (
pay_amount > Wad(0)) and (buy_amount > Wad(0)):
self.logger.debug(
f"Using price {price} for new sell order")
order = self.etherdelta.create_order(
pay_token=self.token_sell(),
pay_amount=pay_amount,
buy_token=self.token_buy(),
buy_amount=buy_amount,
expires=self.web3.eth.blockNumber +
self.arguments.order_age)
self.place_order(order)
def top_up_buy_bands(self, buy_bands: list, target_price: Wad):
"""Ensure our buy engagement is not below minimum in all buy bands. Place new orders if necessary."""
our_balance = self.our_balance(self.token_buy())
for band in buy_bands:
orders = [
order for order in self.our_buy_orders()
if band.includes(order, target_price)
]
total_amount = self.total_amount(orders)
if total_amount < band.min_amount:
if self.deposit_for_buy_order_if_needed(band.avg_amount -
total_amount):
return
price = band.avg_price(target_price)
pay_amount = self.fix_amount(
Wad.min(
band.avg_amount - total_amount, our_balance -
self.total_amount(self.our_buy_orders())))
buy_amount = self.fix_amount(pay_amount / price)
if (pay_amount >= band.dust_cutoff) and (
pay_amount > Wad(0)) and (buy_amount > Wad(0)):
self.logger.debug(f"Using price {price} for new buy order")
order = self.etherdelta.create_order(
pay_token=self.token_buy(),
pay_amount=pay_amount,
buy_token=self.token_sell(),
buy_amount=buy_amount,
expires=self.web3.eth.blockNumber +
self.arguments.order_age)
self.place_order(order)
def depositable_balance(self, token: Address) -> Wad:
if token == EtherDelta.ETH_TOKEN:
return Wad.max(
eth_balance(self.web3, self.our_address) - self.eth_reserve,
Wad(0))
else:
return ERC20Token(web3=self.web3,
address=token).balance_of(self.our_address)
def deposit_for_sell_order_if_needed(self, desired_order_pay_amount: Wad):
if self.our_balance(self.token_sell()) < desired_order_pay_amount:
return self.deposit_for_sell_order()
else:
return False
def deposit_for_sell_order(self):
depositable_eth = self.depositable_balance(self.token_sell())
if depositable_eth > self.min_eth_deposit:
return self.etherdelta.deposit(depositable_eth).transact(
gas_price=self.gas_price).successful
else:
return False
def deposit_for_buy_order_if_needed(self, desired_order_pay_amount: Wad):
if self.our_balance(self.token_buy()) < desired_order_pay_amount:
return self.deposit_for_buy_order()
else:
return False
def deposit_for_buy_order(self):
depositable_sai = self.depositable_balance(self.token_buy())
if depositable_sai > self.min_sai_deposit:
return self.etherdelta.deposit_token(
self.sai.address,
depositable_sai).transact(gas_price=self.gas_price).successful
else:
return False
def total_amount(self, orders):
return reduce(operator.add,
map(lambda order: order.remaining_sell_amount, orders),
Wad(0))
@staticmethod
def fix_amount(amount: Wad) -> Wad:
# for some reason, the EtherDelta backend rejects offchain orders with some amounts
# for example, the following order:
# self.etherdelta.place_order_offchain(self.sai.address, Wad(93033469375510291122),
# EtherDelta.ETH_TOKEN, Wad(400000000000000000),
# self.web3.eth.blockNumber + 50)
# will get placed correctly, but if we substitute 93033469375510291122 for 93033469375510237227
# the backend will not accept it. this is 100% reproductible with above amounts,
# although I wasn't able to figure out the actual reason
#
# what I have noticed is that rounding the amount seems to help,
# so this is what this particular method does
return Wad(int(amount.value / 10**9) * 10**9)
class RadarRelayMarketMakerKeeper:
"""Keeper acting as a market maker on RadarRelay, on the WETH/SAI pair."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='radarrelay-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout",
type=int,
default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address",
type=str,
required=True,
help="Ethereum address of the Tub contract")
parser.add_argument(
"--exchange-address",
type=str,
required=True,
help="Ethereum address of the 0x Exchange contract")
parser.add_argument("--weth-address",
type=str,
required=True,
help="Ethereum address of the WETH token")
parser.add_argument("--relayer-api-server",
type=str,
required=True,
help="Address of the 0x Relayer API")
parser.add_argument("--config",
type=str,
required=True,
help="Buy/sell bands configuration file")
parser.add_argument(
"--price-feed",
type=str,
help=
"Source of price feed. Tub price feed will be used if not specified"
)
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of non-Tub price feed (in seconds, default: 120)"
)
parser.add_argument(
"--order-expiry",
type=int,
required=True,
help="Expiration time of created orders (in seconds)")
parser.add_argument(
"--order-expiry-threshold",
type=int,
default=0,
help=
"Order expiration time at which order is considered already expired (in seconds)"
)
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help=
"Minimum ETH balance below which keeper with either terminate or not start at all"
)
parser.add_argument(
'--cancel-on-shutdown',
dest='cancel_on_shutdown',
action='store_true',
help=
"Whether should cancel all open orders on RadarRelay on keeper shutdown"
)
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument(
"--gas-price-increase",
type=int,
help="Gas price increase (in Wei) if no confirmation within"
" `--gas-price-increase-every` seconds")
parser.add_argument(
"--gas-price-increase-every",
type=int,
default=120,
help="Gas price increase frequency (in seconds, default: 120)")
parser.add_argument("--gas-price-max",
type=int,
help="Maximum gas price (in Wei)")
parser.add_argument("--gas-price-file",
type=str,
help="Gas price configuration file")
parser.add_argument(
"--smart-gas-price",
dest='smart_gas_price',
action='store_true',
help=
"Use smart gas pricing strategy, based on the ethgasstation.info feed"
)
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.tub = Tub(web3=self.web3,
address=Address(self.arguments.tub_address))
self.vox = Vox(web3=self.web3, address=self.tub.vox())
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.ether_token = ERC20Token(web3=self.web3,
address=Address(
self.arguments.weth_address))
logging.basicConfig(
format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
logging.getLogger('urllib3.connectionpool').setLevel(logging.INFO)
logging.getLogger('requests.packages.urllib3.connectionpool').setLevel(
logging.INFO)
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.bands_config = ReloadableConfig(self.arguments.config)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry,
self.tub, self.vox)
self.radar_relay = ZrxExchange(web3=self.web3,
address=Address(
self.arguments.exchange_address))
self.radar_relay_api = ZrxRelayerApi(
exchange=self.radar_relay,
api_server=self.arguments.relayer_api_server)
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.every(15, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
if self.arguments.cancel_on_shutdown:
self.cancel_orders(self.our_orders())
def approve(self):
"""Approve 0x to access our tokens, so we can sell it on the exchange."""
self.radar_relay.approve(
[self.token_sell(), self.token_buy()],
directly(gas_price=self.gas_price))
def price(self) -> Wad:
return self.price_feed.get_price()
def token_sell(self) -> ERC20Token:
return self.ether_token
def token_buy(self) -> ERC20Token:
return self.sai
def our_balance(self, token: ERC20Token) -> Wad:
return token.balance_of(self.our_address)
def our_orders(self) -> list:
our_orders = self.radar_relay_api.get_orders_by_maker(self.our_address)
current_timestamp = int(time.time())
our_orders = list(
filter(
lambda order: order.expiration > current_timestamp - self.
arguments.order_expiry_threshold, our_orders))
our_orders = list(
filter(
lambda order: self.radar_relay.get_unavailable_buy_amount(
order) < order.buy_amount, our_orders))
return our_orders
def our_sell_orders(self, our_orders: list) -> list:
return list(
filter(
lambda order: order.buy_token == self.token_buy().address and
order.pay_token == self.token_sell().address, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(
filter(
lambda order: order.buy_token == self.token_sell().address and
order.pay_token == self.token_buy().address, our_orders))
def synchronize_orders(self):
"""Update our positions in the order book to reflect keeper parameters."""
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(
"Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_orders(self.our_orders())
return
bands = Bands(self.bands_config)
our_orders = self.our_orders()
target_price = self.price()
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_orders(our_orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Place new orders
self.create_orders(
bands.new_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=self.our_balance(self.token_buy()),
our_sell_balance=self.our_balance(self.token_sell()),
target_price=target_price))
def cancel_orders(self, orders):
"""Cancel orders asynchronously."""
synchronize([
self.radar_relay.cancel_order(order).transact_async(
gas_price=self.gas_price) for order in orders
])
def create_orders(self, orders):
"""Create and submit orders synchronously."""
for order in orders:
pay_token = self.token_sell() if order.is_sell else self.token_buy(
)
buy_token = self.token_buy() if order.is_sell else self.token_sell(
)
order = self.radar_relay.create_order(pay_token=pay_token.address,
pay_amount=order.pay_amount,
buy_token=buy_token.address,
buy_amount=order.buy_amount,
expiration=int(time.time()) +
self.arguments.order_expiry)
order = self.radar_relay_api.calculate_fees(order)
order = self.radar_relay.sign_order(order)
self.radar_relay_api.submit_order(order)
class IdexMarketMakerKeeper:
"""Keeper acting as a market maker on IDEX, on the ETH/SAI pair."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='idex-market-maker-keeper')
parser.add_argument("--rpc-host", type=str, default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port", type=int, default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout", type=int, default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument("--eth-from", type=str, required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address", type=str, required=True,
help="Ethereum address of the Tub contract")
parser.add_argument("--idex-address", type=str, required=True,
help="Ethereum address of the IDEX contract")
parser.add_argument("--idex-api-server", type=str, default='https://api.idex.market',
help="Address of the IDEX API server (default: 'https://api.idex.market')")
parser.add_argument("--idex-timeout", type=float, default=9.5,
help="Timeout for accessing the IDEX API (in seconds, default: 9.5)")
parser.add_argument("--config", type=str, required=True,
help="Bands configuration file")
parser.add_argument("--price-feed", type=str, required=True,
help="Source of price feed")
parser.add_argument("--price-feed-expiry", type=int, default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument("--eth-reserve", type=float, required=True,
help="Amount of ETH which will never be deposited so the keeper can cover gas")
parser.add_argument("--min-eth-balance", type=float, default=0,
help="Minimum ETH balance below which keeper will cease operation")
parser.add_argument("--min-eth-deposit", type=float, required=True,
help="Minimum amount of ETH that can be deposited in one transaction")
parser.add_argument("--min-sai-deposit", type=float, required=True,
help="Minimum amount of SAI that can be deposited in one transaction")
parser.add_argument("--gas-price", type=int, default=0,
help="Gas price (in Wei)")
parser.add_argument("--smart-gas-price", dest='smart_gas_price', action='store_true',
help="Use smart gas pricing strategy, based on the ethgasstation.info feed")
parser.add_argument("--debug", dest='debug', action='store_true',
help="Enable debug output")
parser.set_defaults(cancel_on_shutdown=False, withdraw_on_shutdown=False)
self.arguments = parser.parse_args(args)
setup_logging(self.arguments)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(HTTPProvider(endpoint_uri=f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.tub = Tub(web3=self.web3, address=Address(self.arguments.tub_address))
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.gem = ERC20Token(web3=self.web3, address=self.tub.gem())
self.bands_config = ReloadableConfig(self.arguments.config)
self.eth_reserve = Wad.from_number(self.arguments.eth_reserve)
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.min_eth_deposit = Wad.from_number(self.arguments.min_eth_deposit)
self.min_sai_deposit = Wad.from_number(self.arguments.min_sai_deposit)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(self.arguments.price_feed,
self.arguments.price_feed_expiry, self.tub)
if self.eth_reserve <= self.min_eth_balance:
raise Exception("--eth-reserve must be higher than --min-eth-balance")
self.history = History()
self.idex = IDEX(self.web3, Address(self.arguments.idex_address))
self.idex_api = IDEXApi(self.idex, self.arguments.idex_api_server, self.arguments.idex_timeout)
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.on_block(self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
self.cancel_all_orders()
def approve(self):
"""Approve IEEX to access our tokens, so we can deposit them with the exchange"""
token_addresses = filter(lambda address: address != IDEX.ETH_TOKEN, [self.token_sell(), self.token_buy()])
tokens = list(map(lambda address: ERC20Token(web3=self.web3, address=address), token_addresses))
self.idex.approve(tokens, directly(gas_price=self.gas_price))
def pair(self):
# IDEX is inconsistent here. They call the pair `DAI_ETH`, but in reality all prices are
# calculated like it was an `ETH/DAI` pair.
return 'DAI_ETH'
def token_sell(self) -> Address:
return IDEX.ETH_TOKEN
def token_buy(self) -> Address:
return self.sai.address
def our_balances(self):
return self.idex_api.get_balances()
def our_available_balance(self, our_balances, token: Address) -> Wad:
if token == EtherDelta.ETH_TOKEN:
try:
return Wad.from_number(our_balances['ETH']['available'])
except KeyError:
return Wad(0)
elif token == self.sai.address:
try:
return Wad.from_number(our_balances['DAI']['available'])
except KeyError:
return Wad(0)
else:
raise Exception("Unknown token")
def our_orders(self) -> list:
return self.idex_api.get_orders(self.pair())
def our_sell_orders(self, our_orders: list):
return list(filter(lambda order: order.is_sell, our_orders))
def our_buy_orders(self, our_orders: list):
return list(filter(lambda order: not order.is_sell, our_orders))
def synchronize_orders(self):
# If keeper balance is below `--min-eth-balance`, cancel all orders but do not terminate
# the keeper, keep processing blocks as the moment the keeper gets a top-up it should
# resume activity straight away, without the need to restart it.
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(f"Keeper ETH balance below minimum, cancelling all orders.")
self.cancel_all_orders()
return
bands = Bands(self.bands_config, self.history)
our_balances = self.our_balances()
our_orders = self.our_orders()
target_price = self.price_feed.get_price()
# If the is no target price feed, cancel all orders but do not terminate the keeper.
# The moment the price feed comes back, the keeper will resume placing orders.
if target_price is None:
self.logger.warning("Cancelling all orders as no price feed available.")
self.cancel_all_orders()
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# If we detect that our total balance reported by the API is not equal to the
# total balance reported by the Ethereum contract, it probably means that some
# deposits are still pending being credited to our account. In this case
# we also do not create any new orders, but at the same time existing orders
# can still be cancelled.
if not self.balances_match(our_balances):
self.logger.info("Balances do not match, probably deposits are in progress, waiting.")
return
# Evaluate if we need to create new orders, and how much do we need to deposit
new_orders, missing_buy_amount, missing_sell_amount = bands.new_orders(our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=self.our_available_balance(our_balances, self.token_buy()),
our_sell_balance=self.our_available_balance(our_balances, self.token_sell()),
target_price=target_price)
# If deposited amount too low for placing buy orders, try to deposit.
# If deposited amount too low for placing sell orders, try to deposit.
made_deposit = False
if missing_buy_amount > Wad(0):
if self.deposit_for_buy_order(missing_buy_amount):
made_deposit = True
if missing_sell_amount > Wad(0):
if missing_sell_amount > Wad(0):
if self.deposit_for_sell_order(missing_sell_amount):
made_deposit = True
# If we managed to deposit something, do not do anything so we can reevaluate new orders to be placed.
# Otherwise, place new orders.
if not made_deposit:
self.place_orders(new_orders)
def cancel_orders(self, orders: list):
for order in orders:
self.idex_api.cancel_order(order)
def cancel_all_orders(self):
self.cancel_orders(self.our_orders())
def place_orders(self, new_orders):
for new_order in new_orders:
if new_order.is_sell:
self.idex_api.place_order(pay_token=self.token_sell(),
pay_amount=new_order.pay_amount,
buy_token=self.token_buy(),
buy_amount=new_order.buy_amount)
else:
self.idex_api.place_order(pay_token=self.token_buy(),
pay_amount=new_order.pay_amount,
buy_token=self.token_sell(),
buy_amount=new_order.buy_amount)
def deposit_for_sell_order(self, missing_sell_amount: Wad):
# We always want to deposit at least `min_eth_deposit`. If `missing_sell_amount` is less
# than that, we deposit `min_eth_deposit` anyway.
if Wad(0) < missing_sell_amount < self.min_eth_deposit:
missing_sell_amount = self.min_eth_deposit
# We can never deposit more than our available ETH balance minus `eth_reserve` (reserve for gas).
depositable_eth = Wad.max(eth_balance(self.web3, self.our_address) - self.eth_reserve, Wad(0))
missing_sell_amount = Wad.min(missing_sell_amount, depositable_eth)
# If we still can deposit something, and it's at least `min_eth_deposit`, then we do deposit.
if missing_sell_amount > Wad(0) and missing_sell_amount >= self.min_eth_deposit:
receipt = self.idex.deposit(missing_sell_amount).transact(gas_price=self.gas_price)
return receipt is not None and receipt.successful
else:
return False
def deposit_for_buy_order(self, missing_buy_amount: Wad):
# We always want to deposit at least `min_sai_deposit`. If `missing_buy_amount` is less
# than that, we deposit `min_sai_deposit` anyway.
if Wad(0) < missing_buy_amount < self.min_sai_deposit:
missing_buy_amount = self.min_sai_deposit
# We can never deposit more than our available SAI balance.
depositable_sai = self.sai.balance_of(self.our_address)
missing_buy_amount = Wad.min(missing_buy_amount, depositable_sai)
# If we still can deposit something, and it's at least `min_sai_deposit`, then we do deposit.
if missing_buy_amount > Wad(0) and missing_buy_amount >= self.min_sai_deposit:
receipt = self.idex.deposit_token(self.sai.address, missing_buy_amount).transact(gas_price=self.gas_price)
return receipt is not None and receipt.successful
else:
return False
def balances_match(self, our_balances) -> bool:
try:
eth_available = Wad.from_number(our_balances['ETH']['available'])
except KeyError:
eth_available = Wad(0)
try:
eth_on_orders = Wad.from_number(our_balances['ETH']['onOrders'])
except KeyError:
eth_on_orders = Wad(0)
try:
dai_available = Wad.from_number(our_balances['DAI']['available'])
except KeyError:
dai_available = Wad(0)
try:
dai_on_orders = Wad.from_number(our_balances['DAI']['onOrders'])
except KeyError:
dai_on_orders = Wad(0)
return self.idex.balance_of(self.our_address) == eth_available + eth_on_orders and \
self.idex.balance_of_token(self.sai.address, self.our_address) == dai_available + dai_on_orders
class GateIOMarketMakerKeeper:
"""Keeper acting as a market maker on Gate.io."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='gateio-market-maker-keeper')
parser.add_argument(
"--gateio-api-server",
type=str,
default="https://data.gate.io",
help=
"Address of the Gate.io API server (default: 'https://data.gate.io')"
)
parser.add_argument("--gateio-api-key",
type=str,
required=True,
help="API key for the Gate.io API")
parser.add_argument("--gateio-secret-key",
type=str,
required=True,
help="Secret key for the Gate.io API")
parser.add_argument(
"--gateio-timeout",
type=float,
default=9.5,
help=
"Timeout for accessing the Gate.io API (in seconds, default: 9.5)")
parser.add_argument(
"--pair",
type=str,
required=True,
help="Token pair (sell/buy) on which the keeper will operate")
parser.add_argument("--config",
type=str,
required=True,
help="Bands configuration file")
parser.add_argument("--price-feed",
type=str,
required=True,
help="Source of price feed")
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
setup_logging(self.arguments)
self.bands_config = ReloadableConfig(self.arguments.config)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry)
self.gateio_api = GateIOApi(
api_server=self.arguments.gateio_api_server,
api_key=self.arguments.gateio_api_key,
secret_key=self.arguments.gateio_secret_key,
timeout=self.arguments.gateio_timeout)
self._last_order_creation = 0
def main(self):
with Lifecycle() as lifecycle:
lifecycle.on_startup(self.startup)
lifecycle.every(10, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.our_orders()
self.our_balances()
self.logger.info(f"Gate.io API key seems to be valid")
self.logger.info(
f"Keeper configured to work on the '{self.pair()}' pair")
def shutdown(self):
self.gateio_api.cancel_all_orders(self.pair())
def pair(self):
return self.arguments.pair.lower()
def token_sell(self) -> str:
return self.arguments.pair.split('_')[0].upper()
def token_buy(self) -> str:
return self.arguments.pair.split('_')[1].upper()
def our_balances(self) -> dict:
return self.gateio_api.get_balances()
def our_available_balance(self, our_balances: dict, token: str) -> Wad:
try:
return Wad.from_number(our_balances['available'][token])
except KeyError:
return Wad(0)
def our_orders(self) -> list:
return self.gateio_api.get_orders(self.pair())
def our_sell_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.is_sell, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(filter(lambda order: not order.is_sell, our_orders))
def synchronize_orders(self):
bands = Bands(self.bands_config)
our_balances = self.our_balances()
our_orders = self.our_orders()
target_price = self.price_feed.get_price()
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_orders(our_orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Place new orders
new_orders = bands.new_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=self.our_available_balance(our_balances,
self.token_buy()),
our_sell_balance=self.our_available_balance(
our_balances, self.token_sell()),
target_price=target_price)[0]
if len(new_orders) > 0:
if self.can_create_orders():
self.create_orders(new_orders)
self.register_order_creation()
else:
self.logger.info(
"Too little time elapsed from last order creation, waiting..."
)
# Unfortunately the gate.io API does not immediately reflect the fact that our orders have
# been placed. In order to avoid placing orders twice we explicitly wait some time here.
def can_create_orders(self) -> bool:
return time.time() - self._last_order_creation > 15
def register_order_creation(self):
self._last_order_creation = time.time()
def cancel_orders(self, orders: List[Order]):
for order in orders:
self.gateio_api.cancel_order(self.pair(), order.order_id)
def create_orders(self, orders: List[NewOrder]):
for order in orders:
amount = order.pay_amount if order.is_sell else order.buy_amount
self.gateio_api.place_order(self.pair(), order.is_sell,
order.price, amount)
class ZrxMarketMakerKeeper:
"""Keeper acting as a market maker on any 0x exchange implementing the Standard 0x Relayer API V0."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='0x-market-maker-keeper')
parser.add_argument("--rpc-host", type=str, default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port", type=int, default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout", type=int, default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument("--eth-from", type=str, required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--exchange-address", type=str, required=True,
help="Ethereum address of the 0x Exchange contract")
parser.add_argument("--relayer-api-server", type=str, required=True,
help="Address of the 0x Relayer API")
parser.add_argument("--relayer-per-page", type=int, default=100,
help="Number of orders to fetch per one page from the 0x Relayer API (default: 100)")
parser.add_argument("--buy-token-address", type=str, required=True,
help="Ethereum address of the buy token")
parser.add_argument("--sell-token-address", type=str, required=True,
help="Ethereum address of the sell token")
parser.add_argument("--config", type=str, required=True,
help="Bands configuration file")
parser.add_argument("--price-feed", type=str, required=True,
help="Source of price feed")
parser.add_argument("--price-feed-expiry", type=int, default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument("--order-expiry", type=int, required=True,
help="Expiration time of created orders (in seconds)")
parser.add_argument("--order-expiry-threshold", type=int, default=0,
help="How long before order expiration it is considered already expired (in seconds)")
parser.add_argument("--min-eth-balance", type=float, default=0,
help="Minimum ETH balance below which keeper will cease operation")
parser.add_argument('--cancel-on-shutdown', dest='cancel_on_shutdown', action='store_true',
help="Whether should cancel all open orders on keeper shutdown")
parser.add_argument("--gas-price", type=int, default=0,
help="Gas price (in Wei)")
parser.add_argument("--smart-gas-price", dest='smart_gas_price', action='store_true',
help="Use smart gas pricing strategy, based on the ethgasstation.info feed")
parser.add_argument("--debug", dest='debug', action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
setup_logging(self.arguments)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(HTTPProvider(endpoint_uri=f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.token_buy = ERC20Token(web3=self.web3, address=Address(self.arguments.buy_token_address))
self.token_sell = ERC20Token(web3=self.web3, address=Address(self.arguments.sell_token_address))
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.bands_config = ReloadableConfig(self.arguments.config)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(self.arguments.price_feed,
self.arguments.price_feed_expiry)
self.history = History()
self.zrx_exchange = ZrxExchange(web3=self.web3, address=Address(self.arguments.exchange_address))
self.zrx_relayer_api = ZrxRelayerApi(exchange=self.zrx_exchange, api_server=self.arguments.relayer_api_server)
self.placed_orders = []
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.every(15, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
if self.arguments.cancel_on_shutdown:
self.cancel_orders(self.our_orders())
def approve(self):
"""Approve 0x to access our tokens, so we can sell it on the exchange."""
self.zrx_exchange.approve([self.token_sell, self.token_buy], directly(gas_price=self.gas_price))
def our_total_balance(self, token: ERC20Token) -> Wad:
return token.balance_of(self.our_address)
def our_orders(self) -> list:
api_orders = self.zrx_relayer_api.get_orders_by_maker(self.our_address, self.arguments.relayer_per_page)
all_orders = list(set(self.placed_orders + api_orders))
return self.remove_old_orders(all_orders)
def remove_old_orders(self, orders: list) -> list:
current_timestamp = int(time.time())
orders = list(filter(lambda order: order.expiration > current_timestamp - self.arguments.order_expiry_threshold, orders))
orders = list(filter(lambda order: self.zrx_exchange.get_unavailable_buy_amount(order) < order.buy_amount, orders))
return orders
def our_sell_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.buy_token == self.token_buy.address and
order.pay_token == self.token_sell.address, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.buy_token == self.token_sell.address and
order.pay_token == self.token_buy.address, our_orders))
def synchronize_orders(self):
"""Update our positions in the order book to reflect keeper parameters."""
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning("Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_orders(self.our_orders())
return
bands = Bands(self.bands_config, self.history)
our_orders = self.our_orders()
target_price = self.price_feed.get_price()
if target_price is None:
self.logger.warning("Cancelling all orders as no price feed available.")
self.cancel_orders(our_orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Balances returned by `our_total_balance` still contain amounts "locked"
# by currently open orders, so we need to explicitly subtract these amounts.
our_buy_balance = self.our_total_balance(self.token_buy) - Bands.total_amount(self.our_buy_orders(our_orders))
our_sell_balance = self.our_total_balance(self.token_sell) - Bands.total_amount(self.our_sell_orders(our_orders))
# Place new orders
self.place_orders(bands.new_orders(our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=our_buy_balance,
our_sell_balance=our_sell_balance,
target_price=target_price)[0])
def cancel_orders(self, orders):
synchronize([self.zrx_exchange.cancel_order(order).transact_async(gas_price=self.gas_price) for order in orders])
def place_orders(self, new_orders):
for new_order in new_orders:
pay_token = self.token_sell if new_order.is_sell else self.token_buy
buy_token = self.token_buy if new_order.is_sell else self.token_sell
zrx_order = self.zrx_exchange.create_order(pay_token=pay_token.address, pay_amount=new_order.pay_amount,
buy_token=buy_token.address, buy_amount=new_order.buy_amount,
expiration=int(time.time()) + self.arguments.order_expiry)
zrx_order = self.zrx_relayer_api.calculate_fees(zrx_order)
zrx_order = self.zrx_exchange.sign_order(zrx_order)
if self.zrx_relayer_api.submit_order(zrx_order):
self.placed_orders = self.remove_old_orders(self.placed_orders)
self.placed_orders.append(zrx_order)
class OasisMarketMakerKeeper:
"""Keeper acting as a market maker on OasisDEX, on the W-ETH/SAI pair."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='oasis-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout",
type=int,
default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address",
type=str,
required=True,
help="Ethereum address of the Tub contract")
parser.add_argument("--oasis-address",
type=str,
required=True,
help="Ethereum address of the OasisDEX contract")
parser.add_argument("--config",
type=str,
required=True,
help="Buy/sell bands configuration file")
parser.add_argument(
"--price-feed",
type=str,
help=
"Source of price feed. Tub price feed will be used if not specified"
)
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of non-Tub price feed (in seconds, default: 120)"
)
parser.add_argument(
"--round-places",
type=int,
default=2,
help="Number of decimal places to round order prices to (default=2)"
)
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help=
"Minimum ETH balance below which keeper with either terminate or not start at all"
)
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument(
"--gas-price-increase",
type=int,
help="Gas price increase (in Wei) if no confirmation within"
" `--gas-price-increase-every` seconds")
parser.add_argument(
"--gas-price-increase-every",
type=int,
default=120,
help="Gas price increase frequency (in seconds, default: 120)")
parser.add_argument("--gas-price-max",
type=int,
help="Maximum gas price (in Wei)")
parser.add_argument("--gas-price-file",
type=str,
help="Gas price configuration file")
parser.add_argument(
"--smart-gas-price",
dest='smart_gas_price',
action='store_true',
help=
"Use smart gas pricing strategy, based on the ethgasstation.info feed"
)
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.otc = MatchingMarket(web3=self.web3,
address=Address(
self.arguments.oasis_address))
self.tub = Tub(web3=self.web3,
address=Address(self.arguments.tub_address))
self.vox = Vox(web3=self.web3, address=self.tub.vox())
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.gem = ERC20Token(web3=self.web3, address=self.tub.gem())
logging.basicConfig(
format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
logging.getLogger('urllib3.connectionpool').setLevel(logging.INFO)
logging.getLogger('requests.packages.urllib3.connectionpool').setLevel(
logging.INFO)
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.bands_config = ReloadableConfig(self.arguments.config)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry,
self.tub, self.vox)
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.on_block(self.on_block)
lifecycle.every(3, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
@retry(delay=5, logger=logger)
def shutdown(self):
self.cancel_all_orders()
def on_block(self):
# This method is present only so the lifecycle binds the new block listener, which makes
# it then terminate the keeper if no new blocks have been arriving for 300 seconds.
pass
def approve(self):
"""Approve OasisDEX to access our balances, so we can place orders."""
self.otc.approve(
[self.token_sell(), self.token_buy()],
directly(gas_price=self.gas_price))
def price(self) -> Wad:
return self.price_feed.get_price()
def token_sell(self) -> ERC20Token:
return self.gem
def token_buy(self) -> ERC20Token:
return self.sai
def our_balance(self, token: ERC20Token) -> Wad:
return token.balance_of(self.our_address)
def our_orders(self):
return self.otc.get_orders_by_maker(self.our_address)
def our_sell_orders(self, our_orders: list):
return list(
filter(
lambda order: order.buy_token == self.token_buy().address and
order.pay_token == self.token_sell().address, our_orders))
def our_buy_orders(self, our_orders: list):
return list(
filter(
lambda order: order.buy_token == self.token_sell().address and
order.pay_token == self.token_buy().address, our_orders))
def synchronize_orders(self):
# If market is closed, cancel all orders but do not terminate the keeper.
if self.otc.is_closed():
self.logger.warning("Market is closed. Cancelling all orders.")
self.cancel_all_orders()
return
# If keeper balance is below `--min-eth-balance`, cancel all orders but do not terminate
# the keeper, keep processing blocks as the moment the keeper gets a top-up it should
# resume activity straight away, without the need to restart it.
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(
"Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_all_orders()
return
bands = Bands(self.bands_config)
our_orders = self.our_orders()
target_price = self.price()
# If the is no target price feed, cancel all orders but do not terminate the keeper.
# The moment the price feed comes back, the keeper will resume placing orders.
if target_price is None:
self.logger.warning(
"No price feed available. Cancelling all orders.")
self.cancel_all_orders()
return
# If there are any orders to be cancelled, cancel them. It is deliberate that we wait with topping-up
# bands until the next block. This way we would create new orders based on the most recent price and
# order book state. We could theoretically retrieve both (`target_price` and `our_orders`) again here,
# but it just seems cleaner to do it in one place instead of in two.
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# If there are any new orders to be created, create them.
new_orders = bands.new_orders(
our_buy_orders=self.our_buy_orders(our_orders),
our_sell_orders=self.our_sell_orders(our_orders),
our_buy_balance=self.our_balance(self.token_buy()),
our_sell_balance=self.our_balance(self.token_sell()),
target_price=target_price)
if len(new_orders) > 0:
self.create_orders(new_orders)
# We do wait some time after the orders have been created. The reason for that is sometimes
# orders that have been just placed were not picked up by the next `our_orders()` call
# (one can presume the block hasn't been fully imported into the node yet), which made
# the keeper try to place same order(s) again. Of course the second transaction did fail, but it
# resulted in wasted gas and significant delay in keeper operation.
#
# There is no specific reason behind choosing to wait exactly 3s.
time.sleep(3)
def cancel_all_orders(self):
"""Cancel all orders owned by the keeper."""
self.cancel_orders(self.our_orders())
def cancel_orders(self, orders):
"""Cancel orders asynchronously."""
synchronize([
self.otc.kill(
order.order_id).transact_async(gas_price=self.gas_price)
for order in orders
])
def create_orders(self, new_orders):
"""Create orders asynchronously."""
def to_transaction(new_order: NewOrder):
assert (isinstance(new_order, NewOrder))
if new_order.is_sell:
return self.otc.make(pay_token=self.token_sell().address,
pay_amount=new_order.pay_amount,
buy_token=self.token_buy().address,
buy_amount=new_order.buy_amount)
else:
return self.otc.make(pay_token=self.token_buy().address,
pay_amount=new_order.pay_amount,
buy_token=self.token_sell().address,
buy_amount=new_order.buy_amount)
synchronize([
transaction.transact_async(gas_price=self.gas_price)
for transaction in map(to_transaction, new_orders)
])
class RadarRelayMarketMakerKeeper:
"""Keeper acting as a market maker on RadarRelay, on the WETH/SAI pair."""
logger = logging.getLogger('radarrelay-market-maker-keeper')
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='radarrelay-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address",
type=str,
required=True,
help="Ethereum address of the Tub contract")
parser.add_argument(
"--exchange-address",
type=str,
required=True,
help="Ethereum address of the 0x Exchange contract")
parser.add_argument("--weth-address",
type=str,
required=True,
help="Ethereum address of the WETH token")
parser.add_argument("--relayer-api-server",
type=str,
required=True,
help="Address of the 0x Relayer API")
parser.add_argument("--config",
type=str,
required=True,
help="Buy/sell bands configuration file")
parser.add_argument(
"--price-feed",
type=str,
help=
"Source of price feed. Tub price feed will be used if not specified"
)
parser.add_argument(
"--order-expiry",
type=int,
required=True,
help="Expiration time of created orders (in seconds)")
parser.add_argument(
"--order-expiry-threshold",
type=int,
default=0,
help=
"Order expiration time at which order is considered already expired (in seconds)"
)
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help=
"Minimum ETH balance below which keeper with either terminate or not start at all"
)
parser.add_argument(
'--cancel-on-shutdown',
dest='cancel_on_shutdown',
action='store_true',
help=
"Whether should cancel all open orders on RadarRelay on keeper shutdown"
)
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}"))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.tub = Tub(web3=self.web3,
address=Address(self.arguments.tub_address))
self.vox = Vox(web3=self.web3, address=self.tub.vox())
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.ether_token = ERC20Token(web3=self.web3,
address=Address(
self.arguments.weth_address))
logging.basicConfig(
format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
self.bands_config = ReloadableConfig(self.arguments.config)
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.tub, self.vox)
self.radar_relay = ZrxExchange(web3=self.web3,
address=Address(
self.arguments.exchange_address))
self.radar_relay_api = ZrxRelayerApi(
exchange=self.radar_relay,
api_server=self.arguments.relayer_api_server)
def main(self):
with Web3Lifecycle(self.web3) as lifecycle:
self.lifecycle = lifecycle
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.every(15, self.synchronize_orders)
lifecycle.every(60 * 60, self.print_balances)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
def shutdown(self):
if self.arguments.cancel_on_shutdown:
self.cancel_orders(self.our_orders())
def print_balances(self):
sai_owned = self.sai.balance_of(self.our_address)
weth_owned = self.ether_token.balance_of(self.our_address)
self.logger.info(
f"Keeper balances are {sai_owned} SAI, {weth_owned} + 0x-WETH")
def approve(self):
"""Approve 0x to access our 0x-WETH and SAI, so we can sell it on the exchange."""
self.radar_relay.approve([self.ether_token, self.sai], directly())
def our_orders(self) -> list:
our_orders = self.radar_relay_api.get_orders_by_maker(self.our_address)
current_timestamp = int(time.time())
our_orders = list(
filter(
lambda order: order.expiration > current_timestamp - self.
arguments.order_expiry_threshold, our_orders))
our_orders = list(
filter(
lambda order: self.radar_relay.get_unavailable_buy_amount(
order) < order.buy_amount, our_orders))
return our_orders
def our_sell_orders(self, our_orders: list) -> list:
return list(
filter(
lambda order: order.buy_token == self.sai.address and order.
pay_token == self.ether_token.address, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(
filter(
lambda order: order.buy_token == self.ether_token.address and
order.pay_token == self.sai.address, our_orders))
def synchronize_orders(self):
"""Update our positions in the order book to reflect keeper parameters."""
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.lifecycle.terminate(
"Keeper balance is below the minimum, terminating.")
self.cancel_orders(self.our_orders())
return
bands = Bands(self.bands_config)
our_orders = self.our_orders()
target_price = self.price_feed.get_price()
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_orders(our_orders)
return
self.cancel_orders(
itertools.chain(
bands.excessive_buy_orders(self.our_buy_orders(our_orders),
target_price),
bands.excessive_sell_orders(self.our_sell_orders(our_orders),
target_price),
bands.outside_orders(self.our_buy_orders(our_orders),
self.our_sell_orders(our_orders),
target_price)))
self.top_up_bands(our_orders, bands.buy_bands, bands.sell_bands,
target_price)
def cancel_orders(self, orders):
"""Cancel orders asynchronously."""
synchronize([
self.radar_relay.cancel_order(order).transact_async(
gas_price=self.gas_price()) for order in orders
])
def excessive_orders_in_band(self, band, orders: list, target_price: Wad):
"""Return orders which need to be cancelled to bring the total order amount in the band below maximum."""
# if total amount of orders in this band is greater than the maximum, we cancel them all
#
# if may not be the best solution as cancelling only some of them could bring us below
# the maximum, but let's stick to it for now
orders_in_band = [
order for order in orders if band.includes(order, target_price)
]
return orders_in_band if self.total_amount(
orders_in_band) > band.max_amount else []
def top_up_bands(self, our_orders: list, buy_bands: list, sell_bands: list,
target_price: Wad):
"""Create new buy and sell orders in all send and buy bands if necessary."""
self.top_up_buy_bands(our_orders, buy_bands, target_price)
self.top_up_sell_bands(our_orders, sell_bands, target_price)
def top_up_sell_bands(self, our_orders: list, sell_bands: list,
target_price: Wad):
"""Ensure our WETH engagement is not below minimum in all sell bands. Place new orders if necessary."""
our_balance = self.ether_token.balance_of(
self.our_address) #TODO deduct orders / or maybe not...?
for band in sell_bands:
orders = [
order for order in self.our_sell_orders(our_orders)
if band.includes(order, target_price)
]
total_amount = self.total_amount(orders)
if total_amount < band.min_amount:
have_amount = Wad.min(band.avg_amount - total_amount,
our_balance)
if (have_amount >= band.dust_cutoff) and (have_amount >
Wad(0)):
our_balance = our_balance - have_amount #TODO I think this line is unnecessary here
want_amount = have_amount * round(
band.avg_price(target_price))
if want_amount > Wad(0):
order = self.radar_relay.create_order(
pay_token=self.ether_token.address,
pay_amount=have_amount,
buy_token=self.sai.address,
buy_amount=want_amount,
expiration=int(time.time()) +
self.arguments.order_expiry)
order = self.radar_relay_api.calculate_fees(order)
order = self.radar_relay.sign_order(order)
self.radar_relay_api.submit_order(order)
def top_up_buy_bands(self, our_orders: list, buy_bands: list,
target_price: Wad):
"""Ensure our SAI engagement is not below minimum in all buy bands. Place new orders if necessary."""
our_balance = self.sai.balance_of(
self.our_address) #TODO deduct orders / or maybe not...?
for band in buy_bands:
orders = [
order for order in self.our_buy_orders(our_orders)
if band.includes(order, target_price)
]
total_amount = self.total_amount(orders)
if total_amount < band.min_amount:
have_amount = Wad.min(band.avg_amount - total_amount,
our_balance)
if (have_amount >= band.dust_cutoff) and (have_amount >
Wad(0)):
our_balance = our_balance - have_amount #TODO I think this line is unnecessary here
want_amount = have_amount / round(
band.avg_price(target_price))
if want_amount > Wad(0):
order = self.radar_relay.create_order(
pay_token=self.sai.address,
pay_amount=have_amount,
buy_token=self.ether_token.address,
buy_amount=want_amount,
expiration=int(time.time()) +
self.arguments.order_expiry)
order = self.radar_relay_api.calculate_fees(order)
order = self.radar_relay.sign_order(order)
self.radar_relay_api.submit_order(order)
def total_amount(self, orders):
pay_amount_available = lambda order: order.pay_amount - (
self.radar_relay.get_unavailable_buy_amount(
order) * order.pay_amount / order.buy_amount)
return reduce(operator.add, map(pay_amount_available, orders), Wad(0))
def gas_price(self) -> GasPrice:
if self.arguments.gas_price > 0:
return FixedGasPrice(self.arguments.gas_price)
else:
return DefaultGasPrice()
class BiboxMarketMakerKeeper:
"""Keeper acting as a market maker on Bibox."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='bibox-market-maker-keeper')
parser.add_argument(
"--bibox-api-server",
type=str,
default="https://api.bibox.com",
help=
"Address of the Bibox API server (default: 'https://api.bibox.com')"
)
parser.add_argument("--bibox-api-key",
type=str,
required=True,
help="API key for the Bibox API")
parser.add_argument("--bibox-secret",
type=str,
required=True,
help="Secret for the Bibox API")
parser.add_argument(
"--bibox-timeout",
type=float,
default=9.5,
help=
"Timeout for accessing the Bibox API (in seconds, default: 9.5)")
parser.add_argument(
"--pair",
type=str,
required=True,
help="Token pair (sell/buy) on which the keeper will operate")
parser.add_argument("--config",
type=str,
required=True,
help="Bands configuration file")
parser.add_argument("--price-feed",
type=str,
required=True,
help="Source of price feed")
parser.add_argument(
"--price-feed-expiry",
type=int,
default=120,
help="Maximum age of the price feed (in seconds, default: 120)")
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
setup_logging(self.arguments)
self.history = History()
self.bibox_api = BiboxApi(api_server=self.arguments.bibox_api_server,
api_key=self.arguments.bibox_api_key,
secret=self.arguments.bibox_secret,
timeout=self.arguments.bibox_timeout)
self.bands_config = ReloadableConfig(self.arguments.config)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.arguments.price_feed_expiry, None)
self.order_book_manager = OrderBookManager(refresh_frequency=3)
self.order_book_manager.get_orders_with(
lambda: self.bibox_api.get_orders(pair=self.pair(), retry=True))
self.order_book_manager.get_balances_with(
lambda: self.bibox_api.coin_list(retry=True))
self.order_book_manager.start()
def main(self):
with Lifecycle() as lifecycle:
lifecycle.initial_delay(10)
lifecycle.every(1, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def shutdown(self):
while True:
try:
our_orders = self.bibox_api.get_orders(self.pair(), retry=True)
except:
continue
if len(our_orders) == 0:
break
self.cancel_orders(our_orders)
self.order_book_manager.wait_for_order_cancellation()
def pair(self):
return self.arguments.pair.upper()
def token_sell(self) -> str:
return self.arguments.pair.split('_')[0].upper()
def token_buy(self) -> str:
return self.arguments.pair.split('_')[1].upper()
def our_available_balance(self, our_balances: list, token: str) -> Wad:
return Wad.from_number(
next(filter(lambda coin: coin['symbol'] == token,
our_balances))['balance'])
def our_sell_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.is_sell, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(filter(lambda order: not order.is_sell, our_orders))
def synchronize_orders(self):
bands = Bands(self.bands_config, self.history)
order_book = self.order_book_manager.get_order_book()
target_price = self.price_feed.get_price()
if target_price is None:
self.logger.warning(
"Cancelling all orders as no price feed available.")
self.cancel_orders(order_book.orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(
our_buy_orders=self.our_buy_orders(order_book.orders),
our_sell_orders=self.our_sell_orders(order_book.orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Do not place new orders if order book state is not confirmed
if order_book.orders_being_placed or order_book.orders_being_cancelled:
self.logger.debug(
"Order book is in progress, not placing new orders")
return
# Place new orders
self.place_orders(
bands.new_orders(
our_buy_orders=self.our_buy_orders(order_book.orders),
our_sell_orders=self.our_sell_orders(order_book.orders),
our_buy_balance=self.our_available_balance(
order_book.balances, self.token_buy()),
our_sell_balance=self.our_available_balance(
order_book.balances, self.token_sell()),
target_price=target_price)[0])
def cancel_orders(self, orders):
for order in orders:
self.order_book_manager.cancel_order(
order.order_id,
lambda order=order: self.bibox_api.cancel_order(order.order_id
))
def place_orders(self, new_orders):
def place_order_function(new_order_to_be_placed):
amount = new_order_to_be_placed.pay_amount if new_order_to_be_placed.is_sell else new_order_to_be_placed.buy_amount
amount_symbol = self.token_sell()
money = new_order_to_be_placed.buy_amount if new_order_to_be_placed.is_sell else new_order_to_be_placed.pay_amount
money_symbol = self.token_buy()
new_order_id = self.bibox_api.place_order(
is_sell=new_order_to_be_placed.is_sell,
amount=amount,
amount_symbol=amount_symbol,
money=money,
money_symbol=money_symbol)
return Order(new_order_id, 0, new_order_to_be_placed.is_sell,
Wad(0), amount, amount_symbol, money, money_symbol)
for new_order in new_orders:
self.order_book_manager.place_order(
lambda new_order=new_order: place_order_function(new_order))
class BiboxMarketMakerKeeper:
"""Keeper acting as a market maker on Bibox."""
logger = logging.getLogger()
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='bibox-market-maker-keeper')
parser.add_argument("--rpc-host", type=str, default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port", type=int, default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument("--rpc-timeout", type=int, default=10,
help="JSON-RPC timeout (in seconds, default: 10)")
parser.add_argument("--tub-address", type=str, required=True,
help="Ethereum address of the Tub contract")
parser.add_argument("--bibox-api-server", type=str, default="https://api.bibox.com",
help="Address of the Bibox API server (default: 'https://api.bibox.com')")
parser.add_argument("--bibox-api-key", type=str, required=True,
help="API key for the Bibox API")
parser.add_argument("--bibox-secret", type=str, required=True,
help="Secret for the Bibox API")
parser.add_argument("--bibox-timeout", type=float, default=9.5,
help="Timeout for accessing the Bibox API (in seconds, default: 9.5)")
parser.add_argument("--pair", type=str, required=True,
help="Token pair on which the keeper should operate")
parser.add_argument("--config", type=str, required=True,
help="Buy/sell bands configuration file")
parser.add_argument("--price-feed", type=str,
help="Source of price feed. Tub price feed will be used if not specified")
parser.add_argument("--price-feed-expiry", type=int, default=120,
help="Maximum age of non-Tub price feed (in seconds, default: 120)")
parser.add_argument("--debug", dest='debug', action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(HTTPProvider(endpoint_uri=f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}",
request_kwargs={"timeout": self.arguments.rpc_timeout}))
self.tub = None #Tub(web3=self.web3, address=Address(self.arguments.tub_address))
self.vox = None #Vox(web3=self.web3, address=self.tub.vox())
logging.basicConfig(format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
logging.getLogger('urllib3.connectionpool').setLevel(logging.INFO)
logging.getLogger('requests.packages.urllib3.connectionpool').setLevel(logging.INFO)
self.bibox_api = BiboxApi(api_server=self.arguments.bibox_api_server,
api_key=self.arguments.bibox_api_key,
secret=self.arguments.bibox_secret,
timeout=self.arguments.bibox_timeout)
self.bands_config = ReloadableConfig(self.arguments.config)
self.price_feed = PriceFeedFactory().create_price_feed(self.arguments.price_feed,
self.arguments.price_feed_expiry, self.tub, self.vox)
self.bibox_order_book_manager = BiboxOrderBookManager(bibox_api=self.bibox_api,
pair=self.pair(),
refresh_frequency=3)
def main(self):
with Lifecycle(self.web3) as lifecycle:
lifecycle.wait_for_sync(False)
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.every(1, self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
user_info = self.bibox_api.user_info(retry=True)
self.logger.info(f"Bibox API key seems to be valid")
self.logger.info(f"Accessing Bibox as user_id: '{user_info['user_id']}', email: '{user_info['email']}'")
def shutdown(self):
while True:
try:
our_orders = self.bibox_api.get_orders(self.bibox_order_book_manager.pair, retry=True)
except:
continue
if len(our_orders) == 0:
break
self.cancel_orders(our_orders)
self.bibox_order_book_manager.wait_for_order_cancellation()
def price(self) -> Wad:
return self.price_feed.get_price()
def pair(self):
return self.arguments.pair.upper()
def token_sell(self) -> str:
return self.arguments.pair.split('_')[0].upper()
def token_buy(self) -> str:
return self.arguments.pair.split('_')[1].upper()
def our_balance(self, our_balances: list, token: str) -> Wad:
return Wad.from_number(next(filter(lambda coin: coin['symbol'] == token, our_balances))['balance'])
def our_sell_orders(self, our_orders: list) -> list:
return list(filter(lambda order: order.is_sell, our_orders))
def our_buy_orders(self, our_orders: list) -> list:
return list(filter(lambda order: not order.is_sell, our_orders))
def synchronize_orders(self):
bands = Bands(self.bands_config)
order_book = self.bibox_order_book_manager.get_order_book()
target_price = self.price()
if target_price is None:
self.logger.warning("Cancelling all orders as no price feed available.")
self.cancel_orders(order_book.orders)
return
# Cancel orders
cancellable_orders = bands.cancellable_orders(our_buy_orders=self.our_buy_orders(order_book.orders),
our_sell_orders=self.our_sell_orders(order_book.orders),
target_price=target_price)
if len(cancellable_orders) > 0:
self.cancel_orders(cancellable_orders)
return
# Do not place new orders if order book state is not confirmed
if order_book.in_progress:
self.logger.debug("Order book is in progress, not placing new orders")
return
# Place new orders
self.create_orders(bands.new_orders(our_buy_orders=self.our_buy_orders(order_book.orders),
our_sell_orders=self.our_sell_orders(order_book.orders),
our_buy_balance=self.our_balance(order_book.balances, self.token_buy()),
our_sell_balance=self.our_balance(order_book.balances, self.token_sell()),
target_price=target_price))
def cancel_orders(self, orders):
for order in orders:
self.bibox_order_book_manager.cancel_order(order.order_id)
def create_orders(self, orders):
for order in orders:
amount = order.pay_amount if order.is_sell else order.buy_amount
money = order.buy_amount if order.is_sell else order.pay_amount
self.bibox_order_book_manager.place_order(is_sell=order.is_sell,
amount=amount, amount_symbol=self.token_sell(),
money=money, money_symbol=self.token_buy())
class OasisMarketMakerKeeper:
"""Keeper acting as a market maker on OasisDEX, on the W-ETH/SAI pair."""
logger = logging.getLogger('oasis-market-maker-keeper')
def __init__(self, args: list, **kwargs):
parser = argparse.ArgumentParser(prog='oasis-market-maker-keeper')
parser.add_argument("--rpc-host",
type=str,
default="localhost",
help="JSON-RPC host (default: `localhost')")
parser.add_argument("--rpc-port",
type=int,
default=8545,
help="JSON-RPC port (default: `8545')")
parser.add_argument(
"--eth-from",
type=str,
required=True,
help="Ethereum account from which to send transactions")
parser.add_argument("--tub-address",
type=str,
required=True,
help="Ethereum address of the Tub contract")
parser.add_argument("--oasis-address",
type=str,
required=True,
help="Ethereum address of the OasisDEX contract")
parser.add_argument("--config",
type=str,
required=True,
help="Buy/sell bands configuration file")
parser.add_argument(
"--price-feed",
type=str,
help=
"Source of price feed. Tub price feed will be used if not specified"
)
parser.add_argument(
"--round-places",
type=int,
default=2,
help="Number of decimal places to round order prices to (default=2)"
)
parser.add_argument(
"--min-eth-balance",
type=float,
default=0,
help=
"Minimum ETH balance below which keeper with either terminate or not start at all"
)
parser.add_argument("--gas-price",
type=int,
default=0,
help="Gas price (in Wei)")
parser.add_argument(
"--gas-price-increase",
type=int,
help="Gas price increase (in Wei) if no confirmation within"
" `--gas-price-increase-every` seconds")
parser.add_argument(
"--gas-price-increase-every",
type=int,
default=120,
help="Gas price increase frequency (in seconds, default: 120)")
parser.add_argument("--gas-price-max",
type=int,
help="Maximum gas price (in Wei)")
parser.add_argument("--gas-price-file",
type=str,
help="Gas price configuration file")
parser.add_argument(
"--smart-gas-price",
dest='smart_gas_price',
action='store_true',
help=
"Use smart gas pricing strategy, based on the ethgasstation.info feed"
)
parser.add_argument("--debug",
dest='debug',
action='store_true',
help="Enable debug output")
self.arguments = parser.parse_args(args)
self.web3 = kwargs['web3'] if 'web3' in kwargs else Web3(
HTTPProvider(
endpoint_uri=
f"http://{self.arguments.rpc_host}:{self.arguments.rpc_port}"))
self.web3.eth.defaultAccount = self.arguments.eth_from
self.our_address = Address(self.arguments.eth_from)
self.otc = MatchingMarket(web3=self.web3,
address=Address(
self.arguments.oasis_address))
self.tub = Tub(web3=self.web3,
address=Address(self.arguments.tub_address))
self.vox = Vox(web3=self.web3, address=self.tub.vox())
self.sai = ERC20Token(web3=self.web3, address=self.tub.sai())
self.gem = ERC20Token(web3=self.web3, address=self.tub.gem())
logging.basicConfig(
format='%(asctime)-15s %(levelname)-8s %(message)s',
level=(logging.DEBUG if self.arguments.debug else logging.INFO))
self.min_eth_balance = Wad.from_number(self.arguments.min_eth_balance)
self.bands_config = ReloadableConfig(self.arguments.config)
self.gas_price = GasPriceFactory().create_gas_price(self.arguments)
self.price_feed = PriceFeedFactory().create_price_feed(
self.arguments.price_feed, self.tub, self.vox)
def main(self):
with Web3Lifecycle(self.web3) as lifecycle:
self.lifecycle = lifecycle
lifecycle.initial_delay(10)
lifecycle.on_startup(self.startup)
lifecycle.on_block(self.synchronize_orders)
lifecycle.on_shutdown(self.shutdown)
def startup(self):
self.approve()
def shutdown(self):
self.cancel_all_orders()
def approve(self):
"""Approve OasisDEX to access our balances, so we can place orders."""
self.otc.approve([self.gem, self.sai],
directly(gas_price=self.gas_price))
def our_orders(self):
return list(
filter(lambda order: order.maker == self.our_address,
self.otc.get_orders()))
def our_sell_orders(self, our_orders: list):
return list(
filter(
lambda order: order.buy_token == self.sai.address and order.
pay_token == self.gem.address, our_orders))
def our_buy_orders(self, our_orders: list):
return list(
filter(
lambda order: order.buy_token == self.gem.address and order.
pay_token == self.sai.address, our_orders))
def synchronize_orders(self):
# If market is closed, cancel all orders but do not terminate the keeper.
if self.otc.is_closed():
self.logger.warning("Marked is closed. Cancelling all orders.")
self.cancel_all_orders()
return
# If keeper balance is below `--min-eth-balance`, cancel all orders but do not terminate
# the keeper, keep processing blocks as the moment the keeper gets a top-up it should
# resume activity straight away, without the need to restart it.
if eth_balance(self.web3, self.our_address) < self.min_eth_balance:
self.logger.warning(
"Keeper ETH balance below minimum. Cancelling all orders.")
self.cancel_all_orders()
return
bands = Bands(self.bands_config)
our_orders = self.our_orders()
target_price = self.price_feed.get_price()
# If the is no target price feed, cancel all orders but do not terminate the keeper.
# The moment the price feed comes back, the keeper will resume placing orders.
if target_price is None:
self.logger.warning(
"No price feed available. Cancelling all orders.")
self.cancel_all_orders()
return
# If there are any orders to be cancelled, cancel them. It is deliberate that we wait with topping-up
# bands until the next block. This way we would create new orders based on the most recent price and
# order book state. We could theoretically retrieve both (`target_price` and `our_orders`) again here,
# but it just seems cleaner to do it in one place instead of in two.
orders_to_cancel = list(
itertools.chain(
bands.excessive_buy_orders(self.our_buy_orders(our_orders),
target_price),
bands.excessive_sell_orders(self.our_sell_orders(our_orders),
target_price),
bands.outside_orders(self.our_buy_orders(our_orders),
self.our_sell_orders(our_orders),
target_price)))
if len(orders_to_cancel) > 0:
self.cancel_orders(orders_to_cancel)
else:
self.top_up_bands(our_orders, bands.buy_bands, bands.sell_bands,
target_price)
# We do wait some time after the orders have been created. The reason for that is sometimes
# orders that have been just placed were not picked up by the next `our_orders()` call
# (one can presume the block hasn't been fully imported into the node yet), which made
# the keeper try to place same order(s) again. Of course the second transaction did fail, but it
# resulted in wasted gas and significant delay in keeper operation.
#
# There is no specific reason behind choosing to wait exactly 7s.
time.sleep(7)
def cancel_all_orders(self):
"""Cancel all orders owned by the keeper."""
self.cancel_orders(self.our_orders())
def cancel_orders(self, orders):
"""Cancel orders asynchronously."""
synchronize([
self.otc.kill(
order.order_id).transact_async(gas_price=self.gas_price)
for order in orders
])
def top_up_bands(self, our_orders: list, buy_bands: list, sell_bands: list,
target_price: Wad):
"""Asynchronously create new buy and sell orders in all send and buy bands if necessary."""
synchronize([
transact.transact_async(gas_price=self.gas_price)
for transact in itertools.chain(
self.top_up_buy_bands(our_orders, buy_bands, target_price),
self.top_up_sell_bands(our_orders, sell_bands, target_price))
])
def top_up_sell_bands(self, our_orders: list, sell_bands: list,
target_price: Wad):
"""Ensure our WETH engagement is not below minimum in all sell bands. Yield new orders if necessary."""
our_balance = self.gem.balance_of(self.our_address)
for band in sell_bands:
orders = [
order for order in self.our_sell_orders(our_orders)
if band.includes(order, target_price)
]
total_amount = self.total_amount(orders)
if total_amount < band.min_amount:
have_amount = Wad.min(band.avg_amount - total_amount,
our_balance)
want_amount = have_amount * round(band.avg_price(target_price),
self.arguments.round_places)
if (have_amount >= band.dust_cutoff) and (
have_amount > Wad(0)) and (want_amount > Wad(0)):
our_balance = our_balance - have_amount
yield self.otc.make(pay_token=self.gem.address,
pay_amount=have_amount,
buy_token=self.sai.address,
buy_amount=want_amount)
def top_up_buy_bands(self, our_orders: list, buy_bands: list,
target_price: Wad):
"""Ensure our SAI engagement is not below minimum in all buy bands. Yield new orders if necessary."""
our_balance = self.sai.balance_of(self.our_address)
for band in buy_bands:
orders = [
order for order in self.our_buy_orders(our_orders)
if band.includes(order, target_price)
]
total_amount = self.total_amount(orders)
if total_amount < band.min_amount:
have_amount = Wad.min(band.avg_amount - total_amount,
our_balance)
want_amount = have_amount / round(band.avg_price(target_price),
self.arguments.round_places)
if (have_amount >= band.dust_cutoff) and (
have_amount > Wad(0)) and (want_amount > Wad(0)):
our_balance = our_balance - have_amount
yield self.otc.make(pay_token=self.sai.address,
pay_amount=have_amount,
buy_token=self.gem.address,
buy_amount=want_amount)
@staticmethod
def total_amount(orders: List[Order]):
return reduce(operator.add, map(lambda order: order.pay_amount,
orders), Wad(0))