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Remove bittrex related interface code and tests

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This commit is contained in:
Samuel Husso 2018-03-21 19:31:15 +02:00
parent 556533f160
commit 14d16d573c
3 changed files with 0 additions and 732 deletions
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211
freqtrade/exchange/bittrex.py
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@ -1,211 +0,0 @@
import logging
from typing import Dict, List, Optional
from bittrex.bittrex import API_V1_1, API_V2_0
from bittrex.bittrex import Bittrex as _Bittrex
from requests.exceptions import ContentDecodingError
from freqtrade import OperationalException
from freqtrade.exchange.interface import Exchange
logger = logging.getLogger(__name__)
_API: _Bittrex = None
_API_V2: _Bittrex = None
_EXCHANGE_CONF: dict = {}
class Bittrex(Exchange):
"""
Bittrex API wrapper.
"""
# Base URL and API endpoints
BASE_URL: str = 'https://www.bittrex.com'
PAIR_DETAIL_METHOD: str = BASE_URL + '/Market/Index'
def __init__(self, config: dict) -> None:
global _API, _API_V2, _EXCHANGE_CONF
_EXCHANGE_CONF.update(config)
_API = _Bittrex(
api_key=_EXCHANGE_CONF['key'],
api_secret=_EXCHANGE_CONF['secret'],
calls_per_second=1,
api_version=API_V1_1,
)
_API_V2 = _Bittrex(
api_key=_EXCHANGE_CONF['key'],
api_secret=_EXCHANGE_CONF['secret'],
calls_per_second=1,
api_version=API_V2_0,
)
self.cached_ticker = {}
@staticmethod
def _validate_response(response) -> None:
"""
Validates the given bittrex response
and raises a ContentDecodingError if a non-fatal issue happened.
"""
temp_error_messages = [
'NO_API_RESPONSE',
'MIN_TRADE_REQUIREMENT_NOT_MET',
]
if response['message'] in temp_error_messages:
raise ContentDecodingError(response['message'])
@property
def fee(self) -> float:
# 0.25 %: See https://bittrex.com/fees
return 0.0025
def buy(self, pair: str, rate: float, amount: float) -> str:
data = _API.buy_limit(pair.replace('_', '-'), amount, rate)
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({pair}, {rate}, {amount})'.format(
message=data['message'],
pair=pair,
rate=rate,
amount=amount))
return data['result']['uuid']
def sell(self, pair: str, rate: float, amount: float) -> str:
data = _API.sell_limit(pair.replace('_', '-'), amount, rate)
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({pair}, {rate}, {amount})'.format(
message=data['message'],
pair=pair,
rate=rate,
amount=amount))
return data['result']['uuid']
def get_balance(self, currency: str) -> float:
data = _API.get_balance(currency)
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({currency})'.format(
message=data['message'],
currency=currency))
return float(data['result']['Balance'] or 0.0)
def get_balances(self):
data = _API.get_balances()
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message}'.format(message=data['message']))
return data['result']
def get_ticker(self, pair: str, refresh: Optional[bool] = True) -> dict:
if refresh or pair not in self.cached_ticker.keys():
data = _API.get_ticker(pair.replace('_', '-'))
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({pair})'.format(
message=data['message'],
pair=pair))
keys = ['Bid', 'Ask', 'Last']
if not data.get('result') or\
not all(key in data.get('result', {}) for key in keys) or\
not all(data.get('result', {})[key] is not None for key in keys):
raise ContentDecodingError('Invalid response from Bittrex params=({pair})'.format(
pair=pair))
# Update the pair
self.cached_ticker[pair] = {
'bid': float(data['result']['Bid']),
'ask': float(data['result']['Ask']),
'last': float(data['result']['Last']),
}
return self.cached_ticker[pair]
def get_ticker_history(self, pair: str, tick_interval: int) -> List[Dict]:
if tick_interval == 1:
interval = 'oneMin'
elif tick_interval == 5:
interval = 'fiveMin'
elif tick_interval == 30:
interval = 'thirtyMin'
elif tick_interval == 60:
interval = 'hour'
elif tick_interval == 1440:
interval = 'Day'
else:
raise ValueError('Unknown tick_interval: {}'.format(tick_interval))
data = _API_V2.get_candles(pair.replace('_', '-'), interval)
# These sanity check are necessary because bittrex cannot keep their API stable.
if not data.get('result'):
raise ContentDecodingError('Invalid response from Bittrex params=({pair})'.format(
pair=pair))
for prop in ['C', 'V', 'O', 'H', 'L', 'T']:
for tick in data['result']:
if prop not in tick.keys():
raise ContentDecodingError('Required property {} not present '
'in response params=({})'.format(prop, pair))
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({pair})'.format(
message=data['message'],
pair=pair))
return data['result']
def get_order(self, order_id: str) -> Dict:
data = _API.get_order(order_id)
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({order_id})'.format(
message=data['message'],
order_id=order_id))
data = data['result']
return {
'id': data['OrderUuid'],
'type': data['Type'],
'pair': data['Exchange'].replace('-', '_'),
'opened': data['Opened'],
'rate': data['PricePerUnit'],
'amount': data['Quantity'],
'remaining': data['QuantityRemaining'],
'closed': data['Closed'],
}
def cancel_order(self, order_id: str) -> None:
data = _API.cancel(order_id)
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException('{message} params=({order_id})'.format(
message=data['message'],
order_id=order_id))
def get_pair_detail_url(self, pair: str) -> str:
return self.PAIR_DETAIL_METHOD + '?MarketName={}'.format(pair.replace('_', '-'))
def get_markets(self) -> List[str]:
data = _API.get_markets()
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException(data['message'])
return [m['MarketName'].replace('-', '_') for m in data['result']]
def get_market_summaries(self) -> List[Dict]:
data = _API.get_market_summaries()
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException(data['message'])
return data['result']
def get_wallet_health(self) -> List[Dict]:
data = _API_V2.get_wallet_health()
if not data['success']:
Bittrex._validate_response(data)
raise OperationalException(data['message'])
return [{
'Currency': entry['Health']['Currency'],
'IsActive': entry['Health']['IsActive'],
'LastChecked': entry['Health']['LastChecked'],
'Notice': entry['Currency'].get('Notice'),
} for entry in data['result']]

172
freqtrade/exchange/interface.py
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from abc import ABC, abstractmethod
from typing import Dict, List, Optional
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
"""
@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,
}
...
]
"""
@abstractmethod
def get_ticker(self, pair: str, refresh: Optional[bool] = True) -> dict:
"""
Gets ticker for given pair.
:param pair: Pair as str, format: BTC_ETC
:param refresh: Shall we query a new value or a cached value is enough
:return: dict, format: {
'bid': float,
'ask': float,
'last': float
}
"""
@abstractmethod
def get_ticker_history(self, pair: str, tick_interval: int) -> List[Dict]:
"""
Gets ticker history for given pair.
:param pair: Pair as str, format: BTC_ETC
:param tick_interval: ticker interval in minutes
: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)
},
...
]
"""
def get_order(self, order_id: str) -> Dict:
"""
Get order details for the given order_id.
: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
}
"""
@abstractmethod
def cancel_order(self, order_id: str) -> None:
"""
Cancels order for given order_id.
:param order_id: ID as str
:return: None
"""
@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
"""
@abstractmethod
def get_market_summaries(self) -> List[Dict]:
"""
Returns a 24h market summary for all available markets
:return: list, format: [
{
'MarketName': str,
'High': float,
'Low': float,
'Volume': float,
'Last': float,
'TimeStamp': datetime,
'BaseVolume': float,
'Bid': float,
'Ask': float,
'OpenBuyOrders': int,
'OpenSellOrders': int,
'PrevDay': float,
'Created': datetime
},
...
]
"""
@abstractmethod
def get_wallet_health(self) -> List[Dict]:
"""
Returns a list of all wallet health information
:return: list, format: [
{
'Currency': str,
'IsActive': bool,
'LastChecked': str,
'Notice': str
},
...
"""

349
freqtrade/tests/exchange/test_exchange_bittrex.py
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# pragma pylint: disable=missing-docstring, C0103, protected-access, unused-argument
from unittest.mock import MagicMock
import pytest
from requests.exceptions import ContentDecodingError
import freqtrade.exchange.bittrex as btx
from freqtrade.exchange.bittrex import Bittrex
# Eat this flake8
# +------------------+
# | bittrex.Bittrex |
# +------------------+
# |
# (mock Fake_bittrex)
# |
# +-----------------------------+
# | freqtrade.exchange.Bittrex |
# +-----------------------------+
# Call into Bittrex will flow up to the
# external package bittrex.Bittrex.
# By inserting a mock, we redirect those
# calls.
# The faked bittrex API is called just 'fb'
# The freqtrade.exchange.Bittrex is a
# wrapper, and is called 'wb'
def _stub_config():
return {'key': '',
'secret': ''}
class FakeBittrex():
def __init__(self, success=True):
self.success = True # Believe in yourself
self.result = None
self.get_ticker_call_count = 0
# This is really ugly, doing side-effect during instance creation
# But we're allowed to in testing-code
btx._API = MagicMock()
btx._API.buy_limit = self.fake_buysell_limit
btx._API.sell_limit = self.fake_buysell_limit
btx._API.get_balance = self.fake_get_balance
btx._API.get_balances = self.fake_get_balances
btx._API.get_ticker = self.fake_get_ticker
btx._API.get_order = self.fake_get_order
btx._API.cancel = self.fake_cancel_order
btx._API.get_markets = self.fake_get_markets
btx._API.get_market_summaries = self.fake_get_market_summaries
btx._API_V2 = MagicMock()
btx._API_V2.get_candles = self.fake_get_candles
btx._API_V2.get_wallet_health = self.fake_get_wallet_health
def fake_buysell_limit(self, pair, amount, limit):
return {'success': self.success,
'result': {'uuid': '1234'},
'message': 'barter'}
def fake_get_balance(self, cur):
return {'success': self.success,
'result': {'Balance': 1234},
'message': 'unbalanced'}
def fake_get_balances(self):
return {'success': self.success,
'result': [{'BTC_ETH': 1234}],
'message': 'no balances'}
def fake_get_ticker(self, pair):
self.get_ticker_call_count += 1
return self.result or {'success': self.success,
'result': {'Bid': 1, 'Ask': 1, 'Last': 1},
'message': 'NO_API_RESPONSE'}
def fake_get_candles(self, pair, interval):
return self.result or {'success': self.success,
'result': [{'C': 0, 'V': 0, 'O': 0, 'H': 0, 'L': 0, 'T': 0}],
'message': 'candles lit'}
def fake_get_order(self, uuid):
return {'success': self.success,
'result': {'OrderUuid': 'ABC123',
'Type': 'Type',
'Exchange': 'BTC_ETH',
'Opened': True,
'PricePerUnit': 1,
'Quantity': 1,
'QuantityRemaining': 1,
'Closed': True},
'message': 'lost'}
def fake_cancel_order(self, uuid):
return self.result or {'success': self.success,
'message': 'no such order'}
def fake_get_markets(self):
return self.result or {'success': self.success,
'message': 'market gone',
'result': [{'MarketName': '-_'}]}
def fake_get_market_summaries(self):
return self.result or {'success': self.success,
'message': 'no summary',
'result': ['sum']}
def fake_get_wallet_health(self):
return self.result or {'success': self.success,
'message': 'bad health',
'result': [{'Health': {'Currency': 'BTC_ETH',
'IsActive': True,
'LastChecked': 0},
'Currency': {'Notice': True}}]}
# The freqtrade.exchange.bittrex is called wrap_bittrex
# to not confuse naming with bittrex.bittrex
def make_wrap_bittrex():
conf = _stub_config()
wb = btx.Bittrex(conf)
return wb
def test_exchange_bittrex_class():
conf = _stub_config()
b = Bittrex(conf)
assert isinstance(b, Bittrex)
slots = dir(b)
for name in ['fee', 'buy', 'sell', 'get_balance', 'get_balances',
'get_ticker', 'get_ticker_history', 'get_order',
'cancel_order', 'get_pair_detail_url', 'get_markets',
'get_market_summaries', 'get_wallet_health']:
assert name in slots
# FIX: ensure that the slot is also a method in the class
# getattr(b, name) => bound method Bittrex.buy
# type(getattr(b, name)) => class 'method'
def test_exchange_bittrex_fee():
fee = Bittrex.fee.__get__(Bittrex)
assert fee >= 0 and fee < 0.1 # Fee is 0-10 %
def test_exchange_bittrex_buy_good():
wb = make_wrap_bittrex()
fb = FakeBittrex()
uuid = wb.buy('BTC_ETH', 1, 1)
assert uuid == fb.fake_buysell_limit(1, 2, 3)['result']['uuid']
fb.success = False
with pytest.raises(btx.OperationalException, match=r'barter.*'):
wb.buy('BAD', 1, 1)
def test_exchange_bittrex_sell_good():
wb = make_wrap_bittrex()
fb = FakeBittrex()
uuid = wb.sell('BTC_ETH', 1, 1)
assert uuid == fb.fake_buysell_limit(1, 2, 3)['result']['uuid']
fb.success = False
with pytest.raises(btx.OperationalException, match=r'barter.*'):
uuid = wb.sell('BAD', 1, 1)
def test_exchange_bittrex_get_balance():
wb = make_wrap_bittrex()
fb = FakeBittrex()
bal = wb.get_balance('BTC_ETH')
assert bal == fb.fake_get_balance(1)['result']['Balance']
fb.success = False
with pytest.raises(btx.OperationalException, match=r'unbalanced'):
wb.get_balance('BTC_ETH')
def test_exchange_bittrex_get_balances():
wb = make_wrap_bittrex()
fb = FakeBittrex()
bals = wb.get_balances()
assert bals == fb.fake_get_balances()['result']
fb.success = False
with pytest.raises(btx.OperationalException, match=r'no balances'):
wb.get_balances()
def test_exchange_bittrex_get_ticker():
wb = make_wrap_bittrex()
fb = FakeBittrex()
# Poll ticker, which updates the cache
tick = wb.get_ticker('BTC_ETH')
for x in ['bid', 'ask', 'last']:
assert x in tick
# Ensure the side-effect was made (update the ticker cache)
assert 'BTC_ETH' in wb.cached_ticker.keys()
# taint the cache, so we can recognize the cache wall utilized
wb.cached_ticker['BTC_ETH']['bid'] = 1234
# Poll again, getting the cached result
fb.get_ticker_call_count = 0
tick = wb.get_ticker('BTC_ETH', False)
# Ensure the result was from the cache, and that we didn't call exchange
assert wb.cached_ticker['BTC_ETH']['bid'] == 1234
assert fb.get_ticker_call_count == 0
def test_exchange_bittrex_get_ticker_bad():
wb = make_wrap_bittrex()
fb = FakeBittrex()
fb.result = {'success': True, 'result': {'Bid': 1, 'Ask': 0}} # incomplete result
with pytest.raises(ContentDecodingError, match=r'.*Invalid response from Bittrex params.*'):
wb.get_ticker('BTC_ETH')
fb.result = {'success': False, 'message': 'gone bad'}
with pytest.raises(btx.OperationalException, match=r'.*gone bad.*'):
wb.get_ticker('BTC_ETH')
fb.result = {'success': True, 'result': {}} # incomplete result
with pytest.raises(ContentDecodingError, match=r'.*Invalid response from Bittrex params.*'):
wb.get_ticker('BTC_ETH')
fb.result = {'success': False, 'message': 'gone bad'}
with pytest.raises(btx.OperationalException, match=r'.*gone bad.*'):
wb.get_ticker('BTC_ETH')
fb.result = {'success': True,
'result': {'Bid': 1, 'Ask': 0, 'Last': None}} # incomplete result
with pytest.raises(ContentDecodingError, match=r'.*Invalid response from Bittrex params.*'):
wb.get_ticker('BTC_ETH')
def test_exchange_bittrex_get_ticker_history_intervals():
wb = make_wrap_bittrex()
FakeBittrex()
for tick_interval in [1, 5, 30, 60, 1440]:
assert ([{'C': 0, 'V': 0, 'O': 0, 'H': 0, 'L': 0, 'T': 0}] ==
wb.get_ticker_history('BTC_ETH', tick_interval))
def test_exchange_bittrex_get_ticker_history():
wb = make_wrap_bittrex()
fb = FakeBittrex()
assert wb.get_ticker_history('BTC_ETH', 5)
with pytest.raises(ValueError, match=r'.*Unknown tick_interval.*'):
wb.get_ticker_history('BTC_ETH', 2)
fb.success = False
with pytest.raises(btx.OperationalException, match=r'candles lit.*'):
wb.get_ticker_history('BTC_ETH', 5)
fb.success = True
with pytest.raises(ContentDecodingError, match=r'.*Invalid response from Bittrex.*'):
fb.result = {'bad': 0}
wb.get_ticker_history('BTC_ETH', 5)
with pytest.raises(ContentDecodingError, match=r'.*Required property C not present.*'):
fb.result = {'success': True,
'result': [{'V': 0, 'O': 0, 'H': 0, 'L': 0, 'T': 0}], # close is missing
'message': 'candles lit'}
wb.get_ticker_history('BTC_ETH', 5)
def test_exchange_bittrex_get_order():
wb = make_wrap_bittrex()
fb = FakeBittrex()
order = wb.get_order('someUUID')
assert order['id'] == 'ABC123'
fb.success = False
with pytest.raises(btx.OperationalException, match=r'lost'):
wb.get_order('someUUID')
def test_exchange_bittrex_cancel_order():
wb = make_wrap_bittrex()
fb = FakeBittrex()
wb.cancel_order('someUUID')
with pytest.raises(btx.OperationalException, match=r'no such order'):
fb.success = False
wb.cancel_order('someUUID')
# Note: this can be a bug in exchange.bittrex._validate_response
with pytest.raises(KeyError):
fb.result = {'success': False} # message is missing!
wb.cancel_order('someUUID')
with pytest.raises(btx.OperationalException, match=r'foo'):
fb.result = {'success': False, 'message': 'foo'}
wb.cancel_order('someUUID')
def test_exchange_get_pair_detail_url():
wb = make_wrap_bittrex()
assert wb.get_pair_detail_url('BTC_ETH')
def test_exchange_get_markets():
wb = make_wrap_bittrex()
fb = FakeBittrex()
x = wb.get_markets()
assert x == ['__']
with pytest.raises(btx.OperationalException, match=r'market gone'):
fb.success = False
wb.get_markets()
def test_exchange_get_market_summaries():
wb = make_wrap_bittrex()
fb = FakeBittrex()
assert ['sum'] == wb.get_market_summaries()
with pytest.raises(btx.OperationalException, match=r'no summary'):
fb.success = False
wb.get_market_summaries()
def test_exchange_get_wallet_health():
wb = make_wrap_bittrex()
fb = FakeBittrex()
x = wb.get_wallet_health()
assert x[0]['Currency'] == 'BTC_ETH'
with pytest.raises(btx.OperationalException, match=r'bad health'):
fb.success = False
wb.get_wallet_health()
def test_validate_response_success():
response = {
'message': '',
'result': [],
}
Bittrex._validate_response(response)
def test_validate_response_no_api_response():
response = {
'message': 'NO_API_RESPONSE',
'result': None,
}
with pytest.raises(ContentDecodingError, match=r'.*NO_API_RESPONSE.*'):
Bittrex._validate_response(response)
def test_validate_response_min_trade_requirement_not_met():
response = {
'message': 'MIN_TRADE_REQUIREMENT_NOT_MET',
'result': None,
}
with pytest.raises(ContentDecodingError, match=r'.*MIN_TRADE_REQUIREMENT_NOT_MET.*'):
Bittrex._validate_response(response)