stable/freqtrade/exchange/interface.py

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from abc import ABC, abstractmethod
from typing import List, Optional, Dict
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import arrow
class Exchange(ABC):
@property
def name(self) -> str:
"""
Name of the exchange.
:return: str representation of the class name
"""
return self.__class__.__name__
@property
def fee(self) -> float:
"""
Fee for placing an order
:return: percentage in float
"""
return 0.0
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@property
@abstractmethod
def sleep_time(self) -> float:
"""
Sleep time in seconds for the main loop to avoid API rate limits.
:return: float
"""
@abstractmethod
def buy(self, pair: str, rate: float, amount: float) -> str:
"""
Places a limit buy order.
:param pair: Pair as str, format: BTC_ETH
:param rate: Rate limit for order
:param amount: The amount to purchase
:return: order_id of the placed buy order
"""
@abstractmethod
def sell(self, pair: str, rate: float, amount: float) -> str:
"""
Places a limit sell order.
:param pair: Pair as str, format: BTC_ETH
:param rate: Rate limit for order
:param amount: The amount to sell
:return: order_id of the placed sell order
"""
@abstractmethod
def get_balance(self, currency: str) -> float:
"""
Gets account balance.
:param currency: Currency as str, format: BTC
:return: float
"""
@abstractmethod
def get_balances(self) -> List[dict]:
"""
Gets account balances across currencies
:return: List of dicts, format: [
{
'Currency': str,
'Balance': float,
'Available': float,
'Pending': float,
}
...
]
"""
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@abstractmethod
def get_ticker(self, pair: str) -> dict:
"""
Gets ticker for given pair.
:param pair: Pair as str, format: BTC_ETC
:return: dict, format: {
'bid': float,
'ask': float,
'last': float
}
"""
@abstractmethod
def get_ticker_history(self, pair: str, minimum_date: Optional[arrow.Arrow] = None) -> List:
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"""
Gets ticker history for given pair.
:param pair: Pair as str, format: BTC_ETC
:param minimum_date: Minimum date (optional)
:return: list, format: [
{
'O': float, (Open)
'H': float, (High)
'L': float, (Low)
'C': float, (Close)
'V': float, (Volume)
'T': datetime, (Time)
'BV': float, (Base Volume)
},
...
]
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"""
def get_order(self, order_id: str) -> Dict:
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"""
Get order details for the given order_id.
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:param order_id: ID as str
:return: dict, format: {
'id': str,
'type': str,
'pair': str,
'opened': str ISO 8601 datetime,
'closed': str ISO 8601 datetime,
'rate': float,
'amount': float,
'remaining': int
}
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"""
@abstractmethod
def cancel_order(self, order_id: str) -> None:
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"""
Cancels order for given order_id.
:param order_id: ID as str
:return: None
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"""
@abstractmethod
def get_pair_detail_url(self, pair: str) -> str:
"""
Returns the market detail url for the given pair.
:param pair: Pair as str, format: BTC_ETC
:return: URL as str
"""
@abstractmethod
def get_markets(self) -> List[str]:
"""
Returns all available markets.
:return: List of all available pairs
"""