mirror of
https://github.com/freqtrade/freqtrade.git
synced 2024-11-10 10:21:59 +00:00
126 lines
4.0 KiB
Python
126 lines
4.0 KiB
Python
"""
|
|
External Pair List provider
|
|
|
|
Provides pair list from Leader data
|
|
"""
|
|
|
|
import logging
|
|
from typing import Any, Dict, List, Optional
|
|
|
|
from freqtrade.exceptions import OperationalException
|
|
from freqtrade.exchange.types import Tickers
|
|
from freqtrade.plugins.pairlist.IPairList import IPairList, PairlistParameter
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class ProducerPairList(IPairList):
|
|
"""
|
|
PairList plugin for use with external_message_consumer.
|
|
Will use pairs given from leader data.
|
|
|
|
Usage:
|
|
"pairlists": [
|
|
{
|
|
"method": "ProducerPairList",
|
|
"number_assets": 5,
|
|
"producer_name": "default",
|
|
}
|
|
],
|
|
"""
|
|
|
|
is_pairlist_generator = True
|
|
|
|
def __init__(
|
|
self,
|
|
exchange,
|
|
pairlistmanager,
|
|
config: Dict[str, Any],
|
|
pairlistconfig: Dict[str, Any],
|
|
pairlist_pos: int,
|
|
) -> None:
|
|
super().__init__(exchange, pairlistmanager, config, pairlistconfig, pairlist_pos)
|
|
|
|
self._num_assets: int = self._pairlistconfig.get("number_assets", 0)
|
|
self._producer_name = self._pairlistconfig.get("producer_name", "default")
|
|
if not config.get("external_message_consumer", {}).get("enabled"):
|
|
raise OperationalException(
|
|
"ProducerPairList requires external_message_consumer to be enabled."
|
|
)
|
|
|
|
@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 False
|
|
|
|
def short_desc(self) -> str:
|
|
"""
|
|
Short whitelist method description - used for startup-messages
|
|
-> Please overwrite in subclasses
|
|
"""
|
|
return f"{self.name} - {self._producer_name}"
|
|
|
|
@staticmethod
|
|
def description() -> str:
|
|
return "Get a pairlist from an upstream bot."
|
|
|
|
@staticmethod
|
|
def available_parameters() -> Dict[str, PairlistParameter]:
|
|
return {
|
|
"number_assets": {
|
|
"type": "number",
|
|
"default": 0,
|
|
"description": "Number of assets",
|
|
"help": "Number of assets to use from the pairlist",
|
|
},
|
|
"producer_name": {
|
|
"type": "string",
|
|
"default": "default",
|
|
"description": "Producer name",
|
|
"help": (
|
|
"Name of the producer to use. Requires additional "
|
|
"external_message_consumer configuration."
|
|
),
|
|
},
|
|
}
|
|
|
|
def _filter_pairlist(self, pairlist: Optional[List[str]]):
|
|
upstream_pairlist = self._pairlistmanager._dataprovider.get_producer_pairs(
|
|
self._producer_name
|
|
)
|
|
|
|
if pairlist is None:
|
|
pairlist = self._pairlistmanager._dataprovider.get_producer_pairs(self._producer_name)
|
|
|
|
pairs = list(dict.fromkeys(pairlist + upstream_pairlist))
|
|
if self._num_assets:
|
|
pairs = pairs[: self._num_assets]
|
|
|
|
return pairs
|
|
|
|
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
|
|
"""
|
|
pairs = self._filter_pairlist(None)
|
|
self.log_once(f"Received pairs: {pairs}", logger.debug)
|
|
pairs = self._whitelist_for_active_markets(self.verify_whitelist(pairs, logger.info))
|
|
return pairs
|
|
|
|
def filter_pairlist(self, pairlist: List[str], tickers: Tickers) -> 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
|
|
"""
|
|
return self._filter_pairlist(pairlist)
|