def get_external_market_center_price(self, external_price_source):
"""
Get center price from an external market for current market pair.
:param external_price_source: External market name
:return: Center price as float
"""
self.log.debug('inside get_external_mcp, exchange: {} '.format(
external_price_source))
market = self.market.get_string('/')
self.log.debug('market: {} '.format(market))
price_feed = PriceFeed(external_price_source, market)
price_feed.filter_symbols()
center_price = price_feed.get_center_price(None)
self.log.debug('PriceFeed: {}'.format(center_price))
if center_price is None: # Try USDT
center_price = price_feed.get_center_price("USDT")
self.log.debug(
'Substitute USD/USDT center price: {}'.format(center_price))
if center_price is None: # Try consolidated
center_price = price_feed.get_consolidated_price()
self.log.debug(
'Consolidated center price: {}'.format(center_price))
return center_price
def test_exchanges():
symbol = 'BTC/USD'
exchanges = ['gecko', 'bitfinex', 'kraken', 'gdax', 'binance', 'waves']
for exchange in exchanges:
price_feed = PriceFeed(exchange, symbol)
price_feed.filter_symbols()
center_price = price_feed.get_center_price(None)
print("Center price: {}".format(center_price))
if center_price is None:
# Try USDT
center_price = price_feed.get_center_price('USDT')
print("Try again, USD/USDT center price: {}".format(center_price))
def test_alternative_usd():
# Todo - Refactor price_feed to handle alt USD options.
alternative_usd = ['USDT', 'USDC', 'TUSD', 'GUSD']
exchanges = ['bittrex', 'poloniex', 'gemini', 'bitfinex', 'kraken', 'binance', 'okex']
symbol = 'BTC/USD' # Replace with alt usd
for exchange in exchanges:
for alternative in alternative_usd:
price_feed = PriceFeed(exchange, symbol)
center_price = price_feed.get_center_price(None)
if center_price:
print('{} using alt: {} {}'.format(symbol, alternative, center_price))
else:
center_price = price_feed.get_center_price(alternative)
if center_price:
print('{} using alt: {} {}'.format(symbol, alternative, center_price))