freqtrade/plugins/pairlist/VolumePairList.py
"""
Volume PairList provider
Provides dynamic pair list based on trade volumes
"""
import logging
from datetime import timedelta
from typing import Any, Dict, List, Literal
from cachetools import TTLCache
from freqtrade.constants import Config, ListPairsWithTimeframes
from freqtrade.exceptions import OperationalException
from freqtrade.exchange import timeframe_to_minutes, timeframe_to_prev_date
from freqtrade.exchange.types import Tickers
from freqtrade.plugins.pairlist.IPairList import IPairList, PairlistParameter
from freqtrade.util import dt_now, format_ms_time
logger = logging.getLogger(__name__)
SORT_VALUES = ["quoteVolume"]
class VolumePairList(IPairList):
is_pairlist_generator = True
def __init__(
self,
exchange,
pairlistmanager,
config: Config,
pairlistconfig: Dict[str, Any],
pairlist_pos: int,
) -> None:
super().__init__(exchange, pairlistmanager, config, pairlistconfig, pairlist_pos)
if "number_assets" not in self._pairlistconfig:
raise OperationalException(
"`number_assets` not specified. Please check your configuration "
'for "pairlist.config.number_assets"'
)
self._stake_currency = config["stake_currency"]
self._number_pairs = self._pairlistconfig["number_assets"]
self._sort_key: Literal["quoteVolume"] = self._pairlistconfig.get("sort_key", "quoteVolume")
self._min_value = self._pairlistconfig.get("min_value", 0)
self._max_value = self._pairlistconfig.get("max_value", None)
self._refresh_period = self._pairlistconfig.get("refresh_period", 1800)
self._pair_cache: TTLCache = TTLCache(maxsize=1, ttl=self._refresh_period)
self._lookback_days = self._pairlistconfig.get("lookback_days", 0)
self._lookback_timeframe = self._pairlistconfig.get("lookback_timeframe", "1d")
self._lookback_period = self._pairlistconfig.get("lookback_period", 0)
self._def_candletype = self._config["candle_type_def"]
if (self._lookback_days > 0) & (self._lookback_period > 0):
raise OperationalException(
"Ambiguous configuration: lookback_days and lookback_period both set in pairlist "
"config. Please set lookback_days only or lookback_period and lookback_timeframe "
"and restart the bot."
)
# overwrite lookback timeframe and days when lookback_days is set
if self._lookback_days > 0:
self._lookback_timeframe = "1d"
self._lookback_period = self._lookback_days
# get timeframe in minutes and seconds
self._tf_in_min = timeframe_to_minutes(self._lookback_timeframe)
_tf_in_sec = self._tf_in_min * 60
# whether to use range lookback or not
self._use_range = (self._tf_in_min > 0) & (self._lookback_period > 0)
if self._use_range & (self._refresh_period < _tf_in_sec):
raise OperationalException(
f"Refresh period of {self._refresh_period} seconds is smaller than one "
f"timeframe of {self._lookback_timeframe}. Please adjust refresh_period "
f"to at least {_tf_in_sec} and restart the bot."
)
if not self._use_range and not (
self._exchange.exchange_has("fetchTickers")
and self._exchange.get_option("tickers_have_quoteVolume")
):
raise OperationalException(
"Exchange does not support dynamic whitelist in this configuration. "
"Please edit your config and either remove Volumepairlist, "
"or switch to using candles. and restart the bot."
)
if not self._validate_keys(self._sort_key):
raise OperationalException(f"key {self._sort_key} not in {SORT_VALUES}")
candle_limit = exchange.ohlcv_candle_limit(
self._lookback_timeframe, self._config["candle_type_def"]
)
if self._lookback_period < 0:
raise OperationalException("VolumeFilter requires lookback_period to be >= 0")
if self._lookback_period > candle_limit:
raise OperationalException(
"VolumeFilter requires lookback_period to not "
f"exceed exchange max request size ({candle_limit})"
)
@property
def needstickers(self) -> bool:
"""
Boolean property defining if tickers are necessary.
If no Pairlist requires tickers, an empty Dict is passed
as tickers argument to filter_pairlist
"""
return not self._use_range
def _validate_keys(self, key):
return key in SORT_VALUES
def short_desc(self) -> str:
"""
Short whitelist method description - used for startup-messages
"""
return f"{self.name} - top {self._pairlistconfig['number_assets']} volume pairs."
@staticmethod
def description() -> str:
return "Provides dynamic pair list based on trade volumes."
@staticmethod
def available_parameters() -> Dict[str, PairlistParameter]:
return {
"number_assets": {
"type": "number",
"default": 30,
"description": "Number of assets",
"help": "Number of assets to use from the pairlist",
},
"sort_key": {
"type": "option",
"default": "quoteVolume",
"options": SORT_VALUES,
"description": "Sort key",
"help": "Sort key to use for sorting the pairlist.",
},
"min_value": {
"type": "number",
"default": 0,
"description": "Minimum value",
"help": "Minimum value to use for filtering the pairlist.",
},
"max_value": {
"type": "number",
"default": None,
"description": "Maximum value",
"help": "Maximum value to use for filtering the pairlist.",
},
**IPairList.refresh_period_parameter(),
"lookback_days": {
"type": "number",
"default": 0,
"description": "Lookback Days",
"help": "Number of days to look back at.",
},
"lookback_timeframe": {
"type": "string",
"default": "",
"description": "Lookback Timeframe",
"help": "Timeframe to use for lookback.",
},
"lookback_period": {
"type": "number",
"default": 0,
"description": "Lookback Period",
"help": "Number of periods to look back at.",
},
}
def gen_pairlist(self, tickers: Tickers) -> List[str]:
"""
Generate the pairlist
:param tickers: Tickers (from exchange.get_tickers). May be cached.
:return: List of pairs
"""
# Generate dynamic whitelist
# Must always run if this pairlist is not the first in the list.
pairlist = self._pair_cache.get("pairlist")
if pairlist:
# Item found - no refresh necessary
return pairlist.copy()
else:
# Use fresh pairlist
# Check if pair quote currency equals to the stake currency.
_pairlist = [
k
for k in self._exchange.get_markets(
quote_currencies=[self._stake_currency], tradable_only=True, active_only=True
).keys()
]
# No point in testing for blacklisted pairs...
_pairlist = self.verify_blacklist(_pairlist, logger.info)
if not self._use_range:
filtered_tickers = [
v
for k, v in tickers.items()
if (
self._exchange.get_pair_quote_currency(k) == self._stake_currency
and (self._use_range or v.get(self._sort_key) is not None)
and v["symbol"] in _pairlist
)
]
pairlist = [s["symbol"] for s in filtered_tickers]
else:
pairlist = _pairlist
pairlist = self.filter_pairlist(pairlist, tickers)
self._pair_cache["pairlist"] = pairlist.copy()
return pairlist
def filter_pairlist(self, pairlist: List[str], tickers: Dict) -> List[str]:
"""
Filters and sorts pairlist and returns the whitelist again.
Called on each bot iteration - please use internal caching if necessary
:param pairlist: pairlist to filter or sort
:param tickers: Tickers (from exchange.get_tickers). May be cached.
:return: new whitelist
"""
if self._use_range:
# Create bare minimum from tickers structure.
filtered_tickers: List[Dict[str, Any]] = [{"symbol": k} for k in pairlist]
# get lookback period in ms, for exchange ohlcv fetch
since_ms = (
int(
timeframe_to_prev_date(
self._lookback_timeframe,
dt_now()
+ timedelta(
minutes=-(self._lookback_period * self._tf_in_min) - self._tf_in_min
),
).timestamp()
)
* 1000
)
to_ms = (
int(
timeframe_to_prev_date(
self._lookback_timeframe, dt_now() - timedelta(minutes=self._tf_in_min)
).timestamp()
)
* 1000
)
# todo: utc date output for starting date
self.log_once(
f"Using volume range of {self._lookback_period} candles, timeframe: "
f"{self._lookback_timeframe}, starting from {format_ms_time(since_ms)} "
f"till {format_ms_time(to_ms)}",
logger.info,
)
needed_pairs: ListPairsWithTimeframes = [
(p, self._lookback_timeframe, self._def_candletype)
for p in [s["symbol"] for s in filtered_tickers]
if p not in self._pair_cache
]
candles = self._exchange.refresh_ohlcv_with_cache(needed_pairs, since_ms)
for i, p in enumerate(filtered_tickers):
contract_size = self._exchange.markets[p["symbol"]].get("contractSize", 1.0) or 1.0
pair_candles = (
candles[(p["symbol"], self._lookback_timeframe, self._def_candletype)]
if (p["symbol"], self._lookback_timeframe, self._def_candletype) in candles
else None
)
# in case of candle data calculate typical price and quoteVolume for candle
if pair_candles is not None and not pair_candles.empty:
if self._exchange.get_option("ohlcv_volume_currency") == "base":
pair_candles["typical_price"] = (
pair_candles["high"] + pair_candles["low"] + pair_candles["close"]
) / 3
pair_candles["quoteVolume"] = (
pair_candles["volume"] * pair_candles["typical_price"] * contract_size
)
else:
# Exchange ohlcv data is in quote volume already.
pair_candles["quoteVolume"] = pair_candles["volume"]
# ensure that a rolling sum over the lookback_period is built
# if pair_candles contains more candles than lookback_period
quoteVolume = (
pair_candles["quoteVolume"]
.rolling(self._lookback_period)
.sum()
.fillna(0)
.iloc[-1]
)
# replace quoteVolume with range quoteVolume sum calculated above
filtered_tickers[i]["quoteVolume"] = quoteVolume
else:
filtered_tickers[i]["quoteVolume"] = 0
else:
# Tickers mode - filter based on incoming pairlist.
filtered_tickers = [v for k, v in tickers.items() if k in pairlist]
if self._min_value > 0:
filtered_tickers = [v for v in filtered_tickers if v[self._sort_key] > self._min_value]
if self._max_value is not None:
filtered_tickers = [v for v in filtered_tickers if v[self._sort_key] < self._max_value]
sorted_tickers = sorted(filtered_tickers, reverse=True, key=lambda t: t[self._sort_key])
# Validate whitelist to only have active market pairs
pairs = self._whitelist_for_active_markets([s["symbol"] for s in sorted_tickers])
pairs = self.verify_blacklist(pairs, logmethod=logger.info)
# Limit pairlist to the requested number of pairs
pairs = pairs[: self._number_pairs]
return pairs