def fetch_market(self, market_id):
"""
Fetch and cache it. It rarely changes.
"""
instrument = self._instruments.get(market_id)
market = None
if instrument:
market = Market(market_id, instrument['altname'])
market.is_open = True
market.expiry = '-'
# "wsname":"XBT\/USD"
# wsname = WebSocket pair name (if available)
# pair_decimals = scaling decimal places for pair
# lot_decimals = scaling decimal places for volume
# lot_multiplier = amount to multiply lot volume by to get currency volume
# "aclass_base":"currency"
base_asset = instrument['base'] # XXBT
market.set_base(base_asset, base_asset,
instrument['pair_decimals'])
# "aclass_quote":"currency"
quote_asset = instrument['quote'] # ZUSD
market.set_quote(quote_asset, quote_asset,
instrument['lot_decimals']) # 8
# tick size at the base asset precision
market.one_pip_means = math.pow(10.0,
-instrument['pair_decimals']) # 1
market.value_per_pip = 1.0
market.contract_size = 1.0
market.lot_size = 1.0 # "lot":"unit", "lot_multiplier":1
# "margin_call":80, "margin_stop":40
# margin_call = margin call level
# margin_stop = stop-out/liquidation margin level
leverages = set(instrument.get('leverage_buy', []))
leverages.intersection(set(instrument.get('leverage_sell', [])))
market.margin_factor = 1.0 / max(leverages) if len(
leverages) > 0 else 1.0
market.set_leverages(leverages)
size_limit = self._size_limits.get(instrument['altname'], {})
min_size = size_limit.get('min-size', 1.0)
size_limits = [str(min_size), "0.0", str(min_size)]
notional_limits = ["0.0", "0.0", "0.0"]
price_limits = ["0.0", "0.0", "0.0"]
market.set_size_limits(float(size_limits[0]),
float(size_limits[1]),
float(size_limits[2]))
market.set_price_limits(float(price_limits[0]),
float(price_limits[1]),
float(price_limits[2]))
market.set_notional_limits(float(notional_limits[0]), 0.0, 0.0)
# "lot":"unit"
market.unit_type = Market.UNIT_AMOUNT
market.market_type = Market.TYPE_CRYPTO
market.contract_type = Market.CONTRACT_SPOT
market.trade = Market.TRADE_ASSET
if leverages:
market.trade |= Market.TRADE_MARGIN
market.trade |= Market.TRADE_FIFO
# orders capacities
market.orders = Order.ORDER_LIMIT | Order.ORDER_MARKET | Order.ORDER_STOP | Order.ORDER_TAKE_PROFIT
# @todo take the first but it might depends of the traded volume per 30 days, then request volume window to got it
# "fees":[[0,0.26],[50000,0.24],[100000,0.22],[250000,0.2],[500000,0.18],[1000000,0.16],[2500000,0.14],[5000000,0.12],[10000000,0.1]],
# "fees_maker":[[0,0.16],[50000,0.14],[100000,0.12],[250000,0.1],[500000,0.08],[1000000,0.06],[2500000,0.04],[5000000,0.02],[10000000,0]],
fees = instrument.get('fees', [])
fees_maker = instrument.get('fees_maker', [])
if fees:
market.taker_fee = round(fees[0][1] * 0.01, 6)
if fees_maker:
market.maker_fee = round(fees_maker[0][1] * 0.01, 6)
if instrument.get('fee_volume_currency'):
market.fee_currency = instrument['fee_volume_currency']
if quote_asset != self.BASE_QUOTE:
# from XXBTZUSD / XXBTZEUR ...
# @todo
pass
# if self._tickers_data.get(quote_asset+self.BASE_QUOTE):
# market.base_exchange_rate = float(self._tickers_data.get(quote_asset+self.BASE_QUOTE, {'price', '1.0'})['price'])
# elif self._tickers_data.get(self.BASE_QUOTE+quote_asset):
# market.base_exchange_rate = 1.0 / float(self._tickers_data.get(self.BASE_QUOTE+quote_asset, {'price', '1.0'})['price'])
# else:
# market.base_exchange_rate = 1.0
else:
market.base_exchange_rate = 1.0
# @todo contract_size
# market.contract_size = 1.0 / mid_price
# market.value_per_pip = market.contract_size / mid_price
# volume 24h : not have here
# notify for strategy
self.service.notify(Signal.SIGNAL_MARKET_INFO_DATA, self.name,
(market_id, market))
# store the last market info to be used for backtesting
if not self._read_only:
Database.inst().store_market_info((
self.name,
market.market_id,
market.symbol,
market.market_type,
market.unit_type,
market.contract_type, # type
market.trade,
market.orders, # type
market.base,
market.base_display,
market.base_precision, # base
market.quote,
market.quote_display,
market.quote_precision, # quote
market.expiry,
int(market.last_update_time * 1000.0), # expiry, timestamp
str(market.lot_size),
str(market.contract_size),
str(market.base_exchange_rate),
str(market.value_per_pip),
str(market.one_pip_means),
'-',
*size_limits,
*notional_limits,
*price_limits,
str(market.maker_fee),
str(market.taker_fee),
str(market.maker_commission),
str(market.taker_commission)))
return market
def fetch_market(self, market_id):
"""
Fetch and cache it. It rarely changes.
"""
instrument = self._instruments.get(market_id)
market = None
if instrument:
market = Market(market_id, instrument['altname'])
market.is_open = True
market.expiry = '-'
# "wsname":"XBT\/USD"
# wsname = WebSocket pair name (if available)
# pair_decimals = scaling decimal places for pair
# lot_decimals = scaling decimal places for volume
# lot_multiplier = amount to multiply lot volume by to get currency volume
# "aclass_base":"currency"
base_asset = instrument['base'] # XXBT
market.set_base(base_asset, base_asset,
instrument['pair_decimals'])
# "aclass_quote":"currency"
quote_asset = instrument['quote'] # ZUSD
market.set_quote(quote_asset, quote_asset,
instrument['lot_decimals']) # 8
# tick size at the base asset precision
market.one_pip_means = math.pow(10.0,
-instrument['pair_decimals']) # 1
market.value_per_pip = 1.0
market.contract_size = 1.0
market.lot_size = 1.0 # "lot":"unit", "lot_multiplier":1
# "margin_call":80, "margin_stop":40
# margin_call = margin call level
# margin_stop = stop-out/liquidation margin level
leverages = set(instrument.get('leverage_buy', []))
leverages.intersection(set(instrument.get('leverage_sell', [])))
market.margin_factor = 1.0 / max(leverages)
market.set_leverages(leverages)
size_limits = ["1.0", "0.0", "1.0"]
notional_limits = ["1.0", "0.0", "0.0"]
price_limits = ["0.0", "0.0", "0.0"]
# size min/max/step @todo using lot_decimals / pair_decimals
# for afilter in instrument["filters"]:
# if afilter['filterType'] == "LOT_SIZE":
# size_limits = [afilter['minQty'], afilter['maxQty'], afilter['stepSize']]
# elif afilter['filterType'] == "MIN_NOTIONAL":
# notional_limits[0] = afilter['minNotional']
# elif afilter['filterType'] == "PRICE_FILTER":
# price_limits = [afilter['minPrice'], afilter['maxPrice'], afilter['tickSize']]
# if float(size_limits[2]) < 1:
# size_limits[2] = str(float(size_limits[2])) # * 10)
market.set_size_limits(float(size_limits[0]),
float(size_limits[1]),
float(size_limits[2]))
market.set_price_limits(float(price_limits[0]),
float(price_limits[1]),
float(price_limits[2]))
market.set_notional_limits(float(notional_limits[0]), 0.0, 0.0)
# "lot":"unit"
market.unit_type = Market.UNIT_AMOUNT
market.market_type = Market.TYPE_CRYPTO
market.trade = Market.TRADE_ASSET
market.contract_type = Market.CONTRACT_SPOT
# @todo add a copy with
market.trade = Market.TRADE_MARGIN
market.contract_type = Market.CONTRACT_FUTUR
# orders capacities
market.orders = Order.ORDER_LIMIT | Order.ORDER_MARKET | Order.ORDER_STOP | Order.ORDER_TAKE_PROFIT
# "fees":[[0,0.26],[50000,0.24],[100000,0.22],[250000,0.2],[500000,0.18],[1000000,0.16],[2500000,0.14],[5000000,0.12],[10000000,0.1]],
# "fees_maker":[[0,0.16],[50000,0.14],[100000,0.12],[250000,0.1],[500000,0.08],[1000000,0.06],[2500000,0.04],[5000000,0.02],[10000000,0]],
# market.maker_fee = account['makerCommission'] * 0.0001
# market.taker_fee = account['takerCommission'] * 0.0001
# 'fee_volume_currency': 'ZUSD'
# fee_volume_currency = volume discount currency
# if quote_asset != self.BASE_QUOTE:
# if self._tickers_data.get(quote_asset+self.BASE_QUOTE):
# market.base_exchange_rate = float(self._tickers_data.get(quote_asset+self.BASE_QUOTE, {'price', '1.0'})['price'])
# elif self._tickers_data.get(self.BASE_QUOTE+quote_asset):
# market.base_exchange_rate = 1.0 / float(self._tickers_data.get(self.BASE_QUOTE+quote_asset, {'price', '1.0'})['price'])
# else:
# market.base_exchange_rate = 1.0
# else:
# market.base_exchange_rate = 1.0
# market.contract_size = 1.0 / mid_price
# market.value_per_pip = market.contract_size / mid_price
# volume 24h : not have here
# store the last market info to be used for backtesting
if not self._read_only:
Database.inst().store_market_info((
self.name,
market.market_id,
market.symbol,
market.market_type,
market.unit_type,
market.contract_type, # type
market.trade,
market.orders, # type
market.base,
market.base_display,
market.base_precision, # base
market.quote,
market.quote_display,
market.quote_precision, # quote
market.expiry,
int(market.last_update_time * 1000.0), # expiry, timestamp
str(market.lot_size),
str(market.contract_size),
str(market.base_exchange_rate),
str(market.value_per_pip),
str(market.one_pip_means),
'-',
*size_limits,
*notional_limits,
*price_limits,
str(market.maker_fee),
str(market.taker_fee),
str(market.maker_commission),
str(market.taker_commission)))
# notify for strategy
self.service.notify(Signal.SIGNAL_MARKET_INFO_DATA, self.name,
(market_id, market))
return market