def __init__(self,
crypto_com_api_key: str,
crypto_com_secret_key: str,
trading_pairs: Optional[List[str]] = None,
trading_required: bool = True):
"""
:param crypto_com_api_key: The API key to connect to private Crypto.com APIs.
:param crypto_com_secret_key: The API secret.
:param trading_pairs: The market trading pairs which to track order book data.
:param trading_required: Whether actual trading is needed.
"""
super().__init__()
self._trading_required = trading_required
self._trading_pairs = trading_pairs
self._crypto_com_auth = CryptoComAuth(crypto_com_api_key,
crypto_com_secret_key)
self._order_book_tracker = CryptoComOrderBookTracker(
trading_pairs=trading_pairs)
self._user_stream_tracker = CryptoComUserStreamTracker(
self._crypto_com_auth, trading_pairs)
self._ev_loop = asyncio.get_event_loop()
self._shared_client = None
self._poll_notifier = asyncio.Event()
self._last_timestamp = 0
self._in_flight_orders = {
} # Dict[client_order_id:str, CryptoComInFlightOrder]
self._order_not_found_records = {
} # Dict[client_order_id:str, count:int]
self._trading_rules = {} # Dict[trading_pair:str, TradingRule]
self._status_polling_task = None
self._user_stream_event_listener_task = None
self._trading_rules_polling_task = None
self._last_poll_timestamp = 0
class CryptoComExchange(ExchangeBase):
"""
CryptoComExchange connects with Crypto.com exchange and provides order book pricing, user account tracking and
trading functionality.
"""
API_CALL_TIMEOUT = 10.0
SHORT_POLL_INTERVAL = 5.0
UPDATE_ORDER_STATUS_MIN_INTERVAL = 10.0
LONG_POLL_INTERVAL = 120.0
@classmethod
def logger(cls) -> HummingbotLogger:
global ctce_logger
if ctce_logger is None:
ctce_logger = logging.getLogger(__name__)
return ctce_logger
def __init__(self,
crypto_com_api_key: str,
crypto_com_secret_key: str,
trading_pairs: Optional[List[str]] = None,
trading_required: bool = True):
"""
:param crypto_com_api_key: The API key to connect to private Crypto.com APIs.
:param crypto_com_secret_key: The API secret.
:param trading_pairs: The market trading pairs which to track order book data.
:param trading_required: Whether actual trading is needed.
"""
super().__init__()
self._trading_required = trading_required
self._trading_pairs = trading_pairs
self._crypto_com_auth = CryptoComAuth(crypto_com_api_key,
crypto_com_secret_key)
self._order_book_tracker = CryptoComOrderBookTracker(
trading_pairs=trading_pairs)
self._user_stream_tracker = CryptoComUserStreamTracker(
self._crypto_com_auth, trading_pairs)
self._ev_loop = asyncio.get_event_loop()
self._shared_client = None
self._poll_notifier = asyncio.Event()
self._last_timestamp = 0
self._in_flight_orders = {
} # Dict[client_order_id:str, CryptoComInFlightOrder]
self._order_not_found_records = {
} # Dict[client_order_id:str, count:int]
self._trading_rules = {} # Dict[trading_pair:str, TradingRule]
self._status_polling_task = None
self._user_stream_event_listener_task = None
self._trading_rules_polling_task = None
self._last_poll_timestamp = 0
@property
def name(self) -> str:
return "crypto_com"
@property
def order_books(self) -> Dict[str, OrderBook]:
return self._order_book_tracker.order_books
@property
def trading_rules(self) -> Dict[str, TradingRule]:
return self._trading_rules
@property
def in_flight_orders(self) -> Dict[str, CryptoComInFlightOrder]:
return self._in_flight_orders
@property
def status_dict(self) -> Dict[str, bool]:
"""
A dictionary of statuses of various connector's components.
"""
return {
"order_books_initialized":
self._order_book_tracker.ready,
"account_balance":
len(self._account_balances) > 0
if self._trading_required else True,
"trading_rule_initialized":
len(self._trading_rules) > 0,
"user_stream_initialized":
self._user_stream_tracker.data_source.last_recv_time > 0
if self._trading_required else True,
}
@property
def ready(self) -> bool:
"""
:return True when all statuses pass, this might take 5-10 seconds for all the connector's components and
services to be ready.
"""
return all(self.status_dict.values())
@property
def limit_orders(self) -> List[LimitOrder]:
return [
in_flight_order.to_limit_order()
for in_flight_order in self._in_flight_orders.values()
]
@property
def tracking_states(self) -> Dict[str, any]:
"""
:return active in-flight orders in json format, is used to save in sqlite db.
"""
return {
key: value.to_json()
for key, value in self._in_flight_orders.items()
if not value.is_done
}
def restore_tracking_states(self, saved_states: Dict[str, any]):
"""
Restore in-flight orders from saved tracking states, this is st the connector can pick up on where it left off
when it disconnects.
:param saved_states: The saved tracking_states.
"""
self._in_flight_orders.update({
key: CryptoComInFlightOrder.from_json(value)
for key, value in saved_states.items()
})
def supported_order_types(self) -> List[OrderType]:
"""
:return a list of OrderType supported by this connector.
Note that Market order type is no longer required and will not be used.
"""
return [OrderType.LIMIT, OrderType.LIMIT_MAKER]
def start(self, clock: Clock, timestamp: float):
"""
This function is called automatically by the clock.
"""
super().start(clock, timestamp)
def stop(self, clock: Clock):
"""
This function is called automatically by the clock.
"""
super().stop(clock)
async def start_network(self):
"""
This function is required by NetworkIterator base class and is called automatically.
It starts tracking order book, polling trading rules,
updating statuses and tracking user data.
"""
self._order_book_tracker.start()
self._trading_rules_polling_task = safe_ensure_future(
self._trading_rules_polling_loop())
if self._trading_required:
self._status_polling_task = safe_ensure_future(
self._status_polling_loop())
self._user_stream_tracker_task = safe_ensure_future(
self._user_stream_tracker.start())
self._user_stream_event_listener_task = safe_ensure_future(
self._user_stream_event_listener())
async def stop_network(self):
"""
This function is required by NetworkIterator base class and is called automatically.
"""
self._order_book_tracker.stop()
if self._status_polling_task is not None:
self._status_polling_task.cancel()
self._status_polling_task = None
if self._trading_rules_polling_task is not None:
self._trading_rules_polling_task.cancel()
self._trading_rules_polling_task = None
if self._status_polling_task is not None:
self._status_polling_task.cancel()
self._status_polling_task = None
if self._user_stream_tracker_task is not None:
self._user_stream_tracker_task.cancel()
self._user_stream_tracker_task = None
if self._user_stream_event_listener_task is not None:
self._user_stream_event_listener_task.cancel()
self._user_stream_event_listener_task = None
async def check_network(self) -> NetworkStatus:
"""
This function is required by NetworkIterator base class and is called periodically to check
the network connection. Simply ping the network (or call any light weight public API).
"""
try:
# since there is no ping endpoint, the lowest rate call is to get BTC-USDT ticker
await self._api_request(
"get", "public/get-ticker?instrument_name=BTC_USDT")
except asyncio.CancelledError:
raise
except Exception:
return NetworkStatus.NOT_CONNECTED
return NetworkStatus.CONNECTED
async def _http_client(self) -> aiohttp.ClientSession:
"""
:returns Shared client session instance
"""
if self._shared_client is None:
self._shared_client = aiohttp.ClientSession()
return self._shared_client
async def _trading_rules_polling_loop(self):
"""
Periodically update trading rule.
"""
while True:
try:
await self._update_trading_rules()
await asyncio.sleep(60)
except asyncio.CancelledError:
raise
except Exception as e:
self.logger().network(
f"Unexpected error while fetching trading rules. Error: {str(e)}",
exc_info=True,
app_warning_msg=
"Could not fetch new trading rules from Crypto.com. "
"Check network connection.")
await asyncio.sleep(0.5)
async def _update_trading_rules(self):
instruments_info = await self._api_request(
"get", path_url="public/get-instruments")
self._trading_rules.clear()
self._trading_rules = self._format_trading_rules(instruments_info)
def _format_trading_rules(
self, instruments_info: Dict[str, Any]) -> Dict[str, TradingRule]:
"""
Converts json API response into a dictionary of trading rules.
:param instruments_info: The json API response
:return A dictionary of trading rules.
Response Example:
{
"id": 11,
"method": "public/get-instruments",
"code": 0,
"result": {
"instruments": [
{
"instrument_name": "ETH_CRO",
"quote_currency": "CRO",
"base_currency": "ETH",
"price_decimals": 2,
"quantity_decimals": 2
},
{
"instrument_name": "CRO_BTC",
"quote_currency": "BTC",
"base_currency": "CRO",
"price_decimals": 8,
"quantity_decimals": 2
}
]
}
}
"""
result = {}
for rule in instruments_info["result"]["instruments"]:
try:
trading_pair = crypto_com_utils.convert_from_exchange_trading_pair(
rule["instrument_name"])
price_decimals = Decimal(str(rule["price_decimals"]))
quantity_decimals = Decimal(str(rule["quantity_decimals"]))
# E.g. a price decimal of 2 means 0.01 incremental.
price_step = Decimal("1") / Decimal(
str(math.pow(10, price_decimals)))
quantity_step = Decimal("1") / Decimal(
str(math.pow(10, quantity_decimals)))
result[trading_pair] = TradingRule(
trading_pair,
min_price_increment=price_step,
min_base_amount_increment=quantity_step)
except Exception:
self.logger().error(
f"Error parsing the trading pair rule {rule}. Skipping.",
exc_info=True)
return result
async def _api_request(self,
method: str,
path_url: str,
params: Dict[str, Any] = {},
is_auth_required: bool = False) -> Dict[str, Any]:
"""
Sends an aiohttp request and waits for a response.
:param method: The HTTP method, e.g. get or post
:param path_url: The path url or the API end point
:param is_auth_required: Whether an authentication is required, when True the function will add encrypted
signature to the request.
:returns A response in json format.
"""
url = f"{Constants.REST_URL}/{path_url}"
client = await self._http_client()
if is_auth_required:
request_id = crypto_com_utils.RequestId.generate_request_id()
data = {"params": params}
params = self._crypto_com_auth.generate_auth_dict(
path_url, request_id, crypto_com_utils.get_ms_timestamp(),
data)
headers = self._crypto_com_auth.get_headers()
else:
headers = {"Content-Type": "application/json"}
if method == "get":
response = await client.get(url, headers=headers)
elif method == "post":
post_json = json.dumps(params)
response = await client.post(url, data=post_json, headers=headers)
else:
raise NotImplementedError
try:
parsed_response = json.loads(await response.text())
except Exception as e:
raise IOError(f"Error parsing data from {url}. Error: {str(e)}")
if response.status != 200:
raise IOError(
f"Error fetching data from {url}. HTTP status is {response.status}. "
f"Message: {parsed_response}")
if parsed_response["code"] != 0:
raise IOError(
f"{url} API call failed, response: {parsed_response}")
# print(f"REQUEST: {method} {path_url} {params}")
# print(f"RESPONSE: {parsed_response}")
return parsed_response
def get_order_price_quantum(self, trading_pair: str, price: Decimal):
"""
Returns a price step, a minimum price increment for a given trading pair.
"""
trading_rule = self._trading_rules[trading_pair]
return trading_rule.min_price_increment
def get_order_size_quantum(self, trading_pair: str, order_size: Decimal):
"""
Returns an order amount step, a minimum amount increment for a given trading pair.
"""
trading_rule = self._trading_rules[trading_pair]
return Decimal(trading_rule.min_base_amount_increment)
def get_order_book(self, trading_pair: str) -> OrderBook:
if trading_pair not in self._order_book_tracker.order_books:
raise ValueError(f"No order book exists for '{trading_pair}'.")
return self._order_book_tracker.order_books[trading_pair]
def buy(self,
trading_pair: str,
amount: Decimal,
order_type=OrderType.MARKET,
price: Decimal = s_decimal_NaN,
**kwargs) -> str:
"""
Buys an amount of base asset (of the given trading pair). This function returns immediately.
To see an actual order, you'll have to wait for BuyOrderCreatedEvent.
:param trading_pair: The market (e.g. BTC-USDT) to buy from
:param amount: The amount in base token value
:param order_type: The order type
:param price: The price (note: this is no longer optional)
:returns A new internal order id
"""
order_id: str = crypto_com_utils.get_new_client_order_id(
True, trading_pair)
safe_ensure_future(
self._create_order(TradeType.BUY, order_id, trading_pair, amount,
order_type, price))
return order_id
def sell(self,
trading_pair: str,
amount: Decimal,
order_type=OrderType.MARKET,
price: Decimal = s_decimal_NaN,
**kwargs) -> str:
"""
Sells an amount of base asset (of the given trading pair). This function returns immediately.
To see an actual order, you'll have to wait for SellOrderCreatedEvent.
:param trading_pair: The market (e.g. BTC-USDT) to sell from
:param amount: The amount in base token value
:param order_type: The order type
:param price: The price (note: this is no longer optional)
:returns A new internal order id
"""
order_id: str = crypto_com_utils.get_new_client_order_id(
False, trading_pair)
safe_ensure_future(
self._create_order(TradeType.SELL, order_id, trading_pair, amount,
order_type, price))
return order_id
def cancel(self, trading_pair: str, order_id: str):
"""
Cancel an order. This function returns immediately.
To get the cancellation result, you'll have to wait for OrderCancelledEvent.
:param trading_pair: The market (e.g. BTC-USDT) of the order.
:param order_id: The internal order id (also called client_order_id)
"""
safe_ensure_future(self._execute_cancel(trading_pair, order_id))
return order_id
async def _create_order(self, trade_type: TradeType, order_id: str,
trading_pair: str, amount: Decimal,
order_type: OrderType, price: Decimal):
"""
Calls create-order API end point to place an order, starts tracking the order and triggers order created event.
:param trade_type: BUY or SELL
:param order_id: Internal order id (also called client_order_id)
:param trading_pair: The market to place order
:param amount: The order amount (in base token value)
:param order_type: The order type
:param price: The order price
"""
if not order_type.is_limit_type():
raise Exception(f"Unsupported order type: {order_type}")
trading_rule = self._trading_rules[trading_pair]
amount = self.quantize_order_amount(trading_pair, amount)
price = self.quantize_order_price(trading_pair, price)
if amount < trading_rule.min_order_size:
raise ValueError(
f"Buy order amount {amount} is lower than the minimum order size "
f"{trading_rule.min_order_size}.")
api_params = {
"instrument_name":
crypto_com_utils.convert_to_exchange_trading_pair(trading_pair),
"side":
trade_type.name,
"type":
"LIMIT",
"price":
f"{price:f}",
"quantity":
f"{amount:f}",
"client_oid":
order_id
}
if order_type is OrderType.LIMIT_MAKER:
api_params["exec_inst"] = "POST_ONLY"
self.start_tracking_order(order_id, None, trading_pair, trade_type,
price, amount, order_type)
try:
order_result = await self._api_request("post",
"private/create-order",
api_params, True)
exchange_order_id = str(order_result["result"]["order_id"])
tracked_order = self._in_flight_orders.get(order_id)
if tracked_order is not None:
self.logger().info(
f"Created {order_type.name} {trade_type.name} order {order_id} for "
f"{amount} {trading_pair}.")
tracked_order.update_exchange_order_id(exchange_order_id)
event_tag = MarketEvent.BuyOrderCreated if trade_type is TradeType.BUY else MarketEvent.SellOrderCreated
event_class = BuyOrderCreatedEvent if trade_type is TradeType.BUY else SellOrderCreatedEvent
self.trigger_event(
event_tag,
event_class(self.current_timestamp, order_type, trading_pair,
amount, price, order_id))
except asyncio.CancelledError:
raise
except Exception as e:
self.stop_tracking_order(order_id)
self.logger().network(
f"Error submitting {trade_type.name} {order_type.name} order to Crypto.com for "
f"{amount} {trading_pair} "
f"{price}.",
exc_info=True,
app_warning_msg=str(e))
self.trigger_event(
MarketEvent.OrderFailure,
MarketOrderFailureEvent(self.current_timestamp, order_id,
order_type))
def start_tracking_order(self, order_id: str, exchange_order_id: str,
trading_pair: str, trade_type: TradeType,
price: Decimal, amount: Decimal,
order_type: OrderType):
"""
Starts tracking an order by simply adding it into _in_flight_orders dictionary.
"""
self._in_flight_orders[order_id] = CryptoComInFlightOrder(
client_order_id=order_id,
exchange_order_id=exchange_order_id,
trading_pair=trading_pair,
order_type=order_type,
trade_type=trade_type,
price=price,
amount=amount)
def stop_tracking_order(self, order_id: str):
"""
Stops tracking an order by simply removing it from _in_flight_orders dictionary.
"""
if order_id in self._in_flight_orders:
del self._in_flight_orders[order_id]
async def _execute_cancel(self, trading_pair: str, order_id: str) -> str:
"""
Executes order cancellation process by first calling cancel-order API. The API result doesn't confirm whether
the cancellation is successful, it simply states it receives the request.
:param trading_pair: The market trading pair
:param order_id: The internal order id
order.last_state to change to CANCELED
"""
try:
tracked_order = self._in_flight_orders.get(order_id)
if tracked_order is None:
raise ValueError(
f"Failed to cancel order - {order_id}. Order not found.")
if tracked_order.exchange_order_id is None:
await tracked_order.get_exchange_order_id()
ex_order_id = tracked_order.exchange_order_id
await self._api_request(
"post", "private/cancel-order", {
"instrument_name":
crypto_com_utils.convert_to_exchange_trading_pair(
trading_pair),
"order_id":
ex_order_id
}, True)
return order_id
except asyncio.CancelledError:
raise
except Exception as e:
self.logger().network(
f"Failed to cancel order {order_id}: {str(e)}",
exc_info=True,
app_warning_msg=
f"Failed to cancel the order {order_id} on CryptoCom. "
f"Check API key and network connection.")
async def _status_polling_loop(self):
"""
Periodically update user balances and order status via REST API. This serves as a fallback measure for web
socket API updates.
"""
while True:
try:
self._poll_notifier = asyncio.Event()
await self._poll_notifier.wait()
await safe_gather(
self._update_balances(),
self._update_order_status(),
)
self._last_poll_timestamp = self.current_timestamp
except asyncio.CancelledError:
raise
except Exception as e:
self.logger().error(str(e), exc_info=True)
self.logger().network(
"Unexpected error while fetching account updates.",
exc_info=True,
app_warning_msg=
"Could not fetch account updates from Crypto.com. "
"Check API key and network connection.")
await asyncio.sleep(0.5)
async def _update_balances(self):
"""
Calls REST API to update total and available balances.
"""
local_asset_names = set(self._account_balances.keys())
remote_asset_names = set()
account_info = await self._api_request("post",
"private/get-account-summary",
{}, True)
for account in account_info["result"]["accounts"]:
asset_name = account["currency"]
self._account_available_balances[asset_name] = Decimal(
str(account["available"]))
self._account_balances[asset_name] = Decimal(
str(account["balance"]))
remote_asset_names.add(asset_name)
asset_names_to_remove = local_asset_names.difference(
remote_asset_names)
for asset_name in asset_names_to_remove:
del self._account_available_balances[asset_name]
del self._account_balances[asset_name]
async def _update_order_status(self):
"""
Calls REST API to get status update for each in-flight order.
"""
last_tick = int(self._last_poll_timestamp /
self.UPDATE_ORDER_STATUS_MIN_INTERVAL)
current_tick = int(self.current_timestamp /
self.UPDATE_ORDER_STATUS_MIN_INTERVAL)
if current_tick > last_tick and len(self._in_flight_orders) > 0:
tracked_orders = list(self._in_flight_orders.values())
tasks = []
for tracked_order in tracked_orders:
order_id = await tracked_order.get_exchange_order_id()
tasks.append(
self._api_request("post", "private/get-order-detail",
{"order_id": order_id}, True))
self.logger().debug(
f"Polling for order status updates of {len(tasks)} orders.")
responses = await safe_gather(*tasks, return_exceptions=True)
for response in responses:
if isinstance(response, Exception):
raise response
if "result" not in response:
self.logger().info(
f"_update_order_status result not in resp: {response}")
continue
result = response["result"]
if "trade_list" in result:
for trade_msg in result["trade_list"]:
await self._process_trade_message(trade_msg)
self._process_order_message(result["order_info"])
def _process_order_message(self, order_msg: Dict[str, Any]):
"""
Updates in-flight order and triggers cancellation or failure event if needed.
:param order_msg: The order response from either REST or web socket API (they are of the same format)
"""
client_order_id = order_msg["client_oid"]
if client_order_id not in self._in_flight_orders:
return
tracked_order = self._in_flight_orders[client_order_id]
# Update order execution status
tracked_order.last_state = order_msg["status"]
if tracked_order.is_cancelled:
self.logger().info(
f"Successfully cancelled order {client_order_id}.")
self.trigger_event(
MarketEvent.OrderCancelled,
OrderCancelledEvent(self.current_timestamp, client_order_id))
tracked_order.cancelled_event.set()
self.stop_tracking_order(client_order_id)
elif tracked_order.is_failure:
self.logger().info(
f"The market order {client_order_id} has failed according to order status API. "
f"Reason: {crypto_com_utils.get_api_reason(order_msg['reason'])}"
)
self.trigger_event(
MarketEvent.OrderFailure,
MarketOrderFailureEvent(self.current_timestamp,
client_order_id,
tracked_order.order_type))
self.stop_tracking_order(client_order_id)
async def _process_trade_message(self, trade_msg: Dict[str, Any]):
"""
Updates in-flight order and trigger order filled event for trade message received. Triggers order completed
event if the total executed amount equals to the specified order amount.
"""
for order in self._in_flight_orders.values():
await order.get_exchange_order_id()
track_order = [
o for o in self._in_flight_orders.values()
if trade_msg["order_id"] == o.exchange_order_id
]
if not track_order:
return
tracked_order = track_order[0]
updated = tracked_order.update_with_trade_update(trade_msg)
if not updated:
return
self.trigger_event(
MarketEvent.OrderFilled,
OrderFilledEvent(self.current_timestamp,
tracked_order.client_order_id,
tracked_order.trading_pair,
tracked_order.trade_type,
tracked_order.order_type,
Decimal(str(trade_msg["traded_price"])),
Decimal(str(trade_msg["traded_quantity"])),
TradeFee(0.0, [(trade_msg["fee_currency"],
Decimal(str(trade_msg["fee"])))]),
exchange_trade_id=trade_msg["order_id"]))
if math.isclose(tracked_order.executed_amount_base, tracked_order.amount) or \
tracked_order.executed_amount_base >= tracked_order.amount:
tracked_order.last_state = "FILLED"
self.logger().info(
f"The {tracked_order.trade_type.name} order "
f"{tracked_order.client_order_id} has completed "
f"according to order status API.")
event_tag = MarketEvent.BuyOrderCompleted if tracked_order.trade_type is TradeType.BUY \
else MarketEvent.SellOrderCompleted
event_class = BuyOrderCompletedEvent if tracked_order.trade_type is TradeType.BUY \
else SellOrderCompletedEvent
self.trigger_event(
event_tag,
event_class(self.current_timestamp,
tracked_order.client_order_id,
tracked_order.base_asset,
tracked_order.quote_asset, tracked_order.fee_asset,
tracked_order.executed_amount_base,
tracked_order.executed_amount_quote,
tracked_order.fee_paid, tracked_order.order_type))
self.stop_tracking_order(tracked_order.client_order_id)
async def cancel_all(self, timeout_seconds: float):
"""
Cancels all in-flight orders and waits for cancellation results.
Used by bot's top level stop and exit commands (cancelling outstanding orders on exit)
:param timeout_seconds: The timeout at which the operation will be canceled.
:returns List of CancellationResult which indicates whether each order is successfully cancelled.
"""
if self._trading_pairs is None:
raise Exception(
"cancel_all can only be used when trading_pairs are specified."
)
cancellation_results = []
try:
for trading_pair in self._trading_pairs:
await self._api_request(
"post", "private/cancel-all-orders", {
"instrument_name":
crypto_com_utils.convert_to_exchange_trading_pair(
trading_pair)
}, True)
open_orders = await self.get_open_orders()
for cl_order_id, tracked_order in self._in_flight_orders.items():
open_order = [
o for o in open_orders if o.client_order_id == cl_order_id
]
if not open_order:
cancellation_results.append(
CancellationResult(cl_order_id, True))
self.trigger_event(
MarketEvent.OrderCancelled,
OrderCancelledEvent(self.current_timestamp,
cl_order_id))
else:
cancellation_results.append(
CancellationResult(cl_order_id, False))
except Exception:
self.logger().network(
"Failed to cancel all orders.",
exc_info=True,
app_warning_msg=
"Failed to cancel all orders on Crypto.com. Check API key and network connection."
)
return cancellation_results
def tick(self, timestamp: float):
"""
Is called automatically by the clock for each clock's tick (1 second by default).
It checks if status polling task is due for execution.
"""
now = time.time()
poll_interval = (self.SHORT_POLL_INTERVAL if
now - self._user_stream_tracker.last_recv_time > 60.0
else self.LONG_POLL_INTERVAL)
last_tick = int(self._last_timestamp / poll_interval)
current_tick = int(timestamp / poll_interval)
if current_tick > last_tick:
if not self._poll_notifier.is_set():
self._poll_notifier.set()
self._last_timestamp = timestamp
def get_fee(self,
base_currency: str,
quote_currency: str,
order_type: OrderType,
order_side: TradeType,
amount: Decimal,
price: Decimal = s_decimal_NaN) -> TradeFee:
"""
To get trading fee, this function is simplified by using fee override configuration. Most parameters to this
function are ignore except order_type. Use OrderType.LIMIT_MAKER to specify you want trading fee for
maker order.
"""
is_maker = order_type is OrderType.LIMIT_MAKER
return TradeFee(percent=self.estimate_fee_pct(is_maker))
async def _iter_user_event_queue(self) -> AsyncIterable[Dict[str, any]]:
while True:
try:
yield await self._user_stream_tracker.user_stream.get()
except asyncio.CancelledError:
raise
except Exception:
self.logger().network(
"Unknown error. Retrying after 1 seconds.",
exc_info=True,
app_warning_msg=
"Could not fetch user events from CryptoCom. Check API key and network connection."
)
await asyncio.sleep(1.0)
async def _user_stream_event_listener(self):
"""
Listens to message in _user_stream_tracker.user_stream queue. The messages are put in by
CryptoComAPIUserStreamDataSource.
"""
async for event_message in self._iter_user_event_queue():
try:
if "result" not in event_message or "channel" not in event_message[
"result"]:
continue
channel = event_message["result"]["channel"]
if "user.trade" in channel:
for trade_msg in event_message["result"]["data"]:
await self._process_trade_message(trade_msg)
elif "user.order" in channel:
for order_msg in event_message["result"]["data"]:
self._process_order_message(order_msg)
elif channel == "user.balance":
balances = event_message["result"]["data"]
for balance_entry in balances:
asset_name = balance_entry["currency"]
self._account_balances[asset_name] = Decimal(
str(balance_entry["balance"]))
self._account_available_balances[asset_name] = Decimal(
str(balance_entry["available"]))
except asyncio.CancelledError:
raise
except Exception:
self.logger().error(
"Unexpected error in user stream listener loop.",
exc_info=True)
await asyncio.sleep(5.0)
async def get_open_orders(self) -> List[OpenOrder]:
result = await self._api_request("post", "private/get-open-orders", {},
True)
ret_val = []
for order in result["result"]["order_list"]:
if crypto_com_utils.HBOT_BROKER_ID not in order["client_oid"]:
continue
if order["type"] != "LIMIT":
raise Exception(f"Unsupported order type {order['type']}")
ret_val.append(
OpenOrder(
client_order_id=order["client_oid"],
trading_pair=crypto_com_utils.
convert_from_exchange_trading_pair(
order["instrument_name"]),
price=Decimal(str(order["price"])),
amount=Decimal(str(order["quantity"])),
executed_amount=Decimal(str(order["cumulative_quantity"])),
status=order["status"],
order_type=OrderType.LIMIT,
is_buy=True if order["side"].lower() == "buy" else False,
time=int(order["create_time"]),
exchange_order_id=order["order_id"]))
return ret_val
def setUpClass(cls):
cls.ev_loop: asyncio.BaseEventLoop = asyncio.get_event_loop()
cls.order_book_tracker: CryptoComOrderBookTracker = CryptoComOrderBookTracker(cls.trading_pairs)
cls.order_book_tracker.start()
cls.ev_loop.run_until_complete(cls.wait_til_tracker_ready())
