fix(exchange): drop unused get_ft_has override plumbing

freqtrade/exchange/check_exchange.py

@@ -1,30 +1,15 @@
 import logging
-from typing import Any
 
 from freqtrade.constants import Config
 from freqtrade.enums import RunMode
 from freqtrade.exceptions import OperationalException
 from freqtrade.exchange import available_exchanges, is_exchange_known_ccxt, validate_exchange
 from freqtrade.exchange.common import MAP_EXCHANGE_CHILDCLASS, SUPPORTED_EXCHANGES
-from freqtrade.resolvers.exchange_resolver import ExchangeResolver
 
 
 logger = logging.getLogger(__name__)
 
 
-def _get_ft_has_overrides(exchange_name: str) -> dict[str, Any] | None:
-    subclassed = {e["name"].lower(): e for e in ExchangeResolver.search_all_objects({}, False)}
-    mapped = MAP_EXCHANGE_CHILDCLASS.get(exchange_name.lower(), exchange_name.lower()).lower()
-    resolved = subclassed.get(mapped)
-    if not resolved:
-        return None
-
-    get_ft_has = getattr(resolved["class"], "get_ft_has", None)
-    if callable(get_ft_has):
-        return get_ft_has() or None
-    return None
-
-
 def check_exchange(config: Config, check_for_bad: bool = True) -> bool:
     """
     Check if the exchange name in the config file is supported by Freqtrade
@@ -62,8 +47,7 @@ def check_exchange(config: Config, check_for_bad: bool = True) -> bool:
             f"{', '.join(available_exchanges())}"
         )
 
-    ft_has_overrides = _get_ft_has_overrides(exchange)
-    valid, reason, _, _ = validate_exchange(exchange, ft_has_overrides)
+    valid, reason, _, _ = validate_exchange(exchange)
     if not valid:
         if check_for_bad:
             raise OperationalException(

freqtrade/exchange/exchange_utils.py

@@ -70,7 +70,6 @@ def _exchange_has_helper(ex_has: dict[str, Any], required: dict[str, list[str]])
 
 def validate_exchange(
     exchange: str,
-    ft_has_overrides: dict[str, Any] | None = None,
 ) -> tuple[bool, str, str, ccxt.Exchange | None]:
     """
     returns: can_use, reason, exchange_object
@@ -85,8 +84,6 @@ def validate_exchange(
         return False, "", "", None
 
     ex_has = dict(ex_mod.has or {})
-    if ft_has_overrides:
-        ex_has.update(ft_has_overrides)
 
     result = True
     reasons = []
@@ -120,13 +117,8 @@ def _build_exchange_list_entry(
     mapped_exchange_name = MAP_EXCHANGE_CHILDCLASS.get(exchange_name, exchange_name).lower()
 
     resolved = exchangeClasses.get(mapped_exchange_name)
-    ft_has_overrides = None
-    if resolved:
-        get_ft_has = getattr(resolved["class"], "get_ft_has", None)
-        if callable(get_ft_has):
-            ft_has_overrides = get_ft_has() or None
 
-    valid, comment, comment_fut, ex_mod = validate_exchange(exchange_name, ft_has_overrides)
+    valid, comment, comment_fut, ex_mod = validate_exchange(exchange_name)
 
     is_alias = getattr(ex_mod, "alias", False)
     result: ValidExchangesType = {

tests/exchange/test_exchange_utils.py

@@ -3,7 +3,6 @@ from datetime import UTC, datetime, timedelta
 from math import isnan, nan
 from unittest.mock import MagicMock
 
-import ccxt
 import pytest
 from ccxt import (
     DECIMAL_PLACES,
@@ -15,7 +14,6 @@ from ccxt import (
     TRUNCATE,
 )
 
-import freqtrade.exchange.exchange_utils as exchange_utils_mod
 from freqtrade.enums import RunMode
 from freqtrade.exceptions import OperationalException
 from freqtrade.exchange import (
@@ -30,13 +28,10 @@ from freqtrade.exchange import (
     timeframe_to_resample_freq,
     timeframe_to_seconds,
 )
-from freqtrade.exchange.check_exchange import _get_ft_has_overrides, check_exchange
+from freqtrade.exchange.check_exchange import check_exchange
 from freqtrade.exchange.exchange_utils import (
-    _build_exchange_list_entry,
     _exchange_has_helper,
-    validate_exchange,
 )
-from freqtrade.resolvers.exchange_resolver import ExchangeResolver
 from tests.conftest import log_has_re
 
 
@@ -433,66 +428,3 @@ def test_exchange__exchange_has_helper():
     }
     missing = _exchange_has_helper(e_mod.has, required)
     assert set(missing) == {"fetchOHLCV", "fetchMyTrades", "fetchOrder"}
-
-
-def test_validate_exchange_uses_ft_has_overrides(monkeypatch):
-    class DummyExchange:
-        def __init__(self) -> None:
-            self.has = {
-                "fetchOrder": False,
-                "fetchL2OrderBook": False,
-                "fetchTicker": True,
-                "cancelOrder": True,
-                "createOrder": True,
-                "fetchBalance": True,
-                "fetchOHLCV": False,
-            }
-
-    monkeypatch.setattr(ccxt.pro, "dummy", DummyExchange, raising=False)
-
-    valid, _, _, _ = validate_exchange("dummy")
-    assert not valid
-
-    valid, _, _, _ = validate_exchange("dummy", {"fetchOrder": True, "fetchOHLCV": True})
-    assert valid
-
-
-def test_build_exchange_list_entry_uses_ft_has_overrides(monkeypatch):
-    class DummyClass:
-        _supported_trading_mode_margin_pairs = []
-
-        @staticmethod
-        def get_ft_has():
-            return {"fetchOrder": True}
-
-    captured = {}
-
-    class DummyExchange:
-        name = "Dummy"
-        alias = False
-        dex = False
-
-    def fake_validate_exchange(exchange, ft_has_overrides=None):
-        captured["ft_has_overrides"] = ft_has_overrides
-        return True, "", "", DummyExchange()
-
-    monkeypatch.setattr(exchange_utils_mod, "validate_exchange", fake_validate_exchange)
-
-    res = _build_exchange_list_entry("dummy", {"dummy": {"class": DummyClass}})
-    assert captured["ft_has_overrides"] == {"fetchOrder": True}
-    assert res["classname"] == "dummy"
-
-
-def test_get_ft_has_overrides_returns_override(monkeypatch):
-    class DummyClass:
-        @staticmethod
-        def get_ft_has():
-            return {"fetchOrder": True}
-
-    monkeypatch.setattr(
-        ExchangeResolver,
-        "search_all_objects",
-        lambda *args, **kwargs: [{"name": "dummy", "class": DummyClass}],
-    )
-
-    assert _get_ft_has_overrides("dummy") == {"fetchOrder": True}