Improve supported exchange check by supporting exchange aliases

freqtrade/exchange/__init__.py

@@ -12,8 +12,8 @@ from freqtrade.exchange.coinbasepro import Coinbasepro
 from freqtrade.exchange.exchange import (amount_to_contract_precision, amount_to_contracts,
                                          amount_to_precision, available_exchanges, ccxt_exchanges,
                                          contracts_to_amount, date_minus_candles,
-                                         is_exchange_known_ccxt, is_exchange_officially_supported,
-                                         market_is_active, price_to_precision, timeframe_to_minutes,
+                                         is_exchange_known_ccxt, market_is_active,
+                                         price_to_precision, timeframe_to_minutes,
                                          timeframe_to_msecs, timeframe_to_next_date,
                                          timeframe_to_prev_date, timeframe_to_seconds,
                                          validate_exchange, validate_exchanges)

freqtrade/exchange/check_exchange.py

@@ -3,8 +3,8 @@ import logging
 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,
-                                is_exchange_officially_supported, validate_exchange)
+from freqtrade.exchange import available_exchanges, is_exchange_known_ccxt, validate_exchange
+from freqtrade.exchange.common import MAP_EXCHANGE_CHILDCLASS, SUPPORTED_EXCHANGES
 
 
 logger = logging.getLogger(__name__)
@@ -52,7 +52,7 @@ def check_exchange(config: Config, check_for_bad: bool = True) -> bool:
         else:
             logger.warning(f'Exchange "{exchange}"  will not work with Freqtrade. Reason: {reason}')
 
-    if is_exchange_officially_supported(exchange):
+    if MAP_EXCHANGE_CHILDCLASS.get(exchange, exchange) in SUPPORTED_EXCHANGES:
         logger.info(f'Exchange "{exchange}" is officially supported '
                     f'by the Freqtrade development team.')
     else:

freqtrade/exchange/exchange.py

@@ -30,8 +30,7 @@ from freqtrade.exceptions import (DDosProtection, ExchangeError, InsufficientFun
                                   RetryableOrderError, TemporaryError)
 from freqtrade.exchange.common import (API_FETCH_ORDER_RETRY_COUNT, BAD_EXCHANGES,
                                        EXCHANGE_HAS_OPTIONAL, EXCHANGE_HAS_REQUIRED,
-                                       SUPPORTED_EXCHANGES, remove_credentials, retrier,
-                                       retrier_async)
+                                       remove_credentials, retrier, retrier_async)
 from freqtrade.misc import (chunks, deep_merge_dicts, file_dump_json, file_load_json,
                             safe_value_fallback2)
 from freqtrade.plugins.pairlist.pairlist_helpers import expand_pairlist
@@ -2773,10 +2772,6 @@ def is_exchange_known_ccxt(exchange_name: str, ccxt_module: CcxtModuleType = Non
     return exchange_name in ccxt_exchanges(ccxt_module)
 
 
-def is_exchange_officially_supported(exchange_name: str) -> bool:
-    return exchange_name in SUPPORTED_EXCHANGES
-
-
 def ccxt_exchanges(ccxt_module: CcxtModuleType = None) -> List[str]:
     """
     Return the list of all exchanges known to ccxt

tests/exchange/test_exchange_utils.py

@@ -20,10 +20,26 @@ def test_check_exchange(default_conf, caplog) -> None:
     # Test an officially supported by Freqtrade team exchange
     default_conf.get('exchange').update({'name': 'binance'})
     assert check_exchange(default_conf)
-    assert log_has_re(r"Exchange .* is officially supported by the Freqtrade development team\.",
-                      caplog)
+    assert log_has_re(
+        r"Exchange \"binance\" is officially supported by the Freqtrade development team\.",
+        caplog)
+    caplog.clear()
+
+    # Test an officially supported by Freqtrade team exchange
+    default_conf.get('exchange').update({'name': 'binanceus'})
+    assert check_exchange(default_conf)
+    assert log_has_re(
+        r"Exchange \"binanceus\" is officially supported by the Freqtrade development team\.",
+        caplog)
     caplog.clear()
 
+    # Test an officially supported by Freqtrade team exchange - with remapping
+    default_conf.get('exchange').update({'name': 'okex'})
+    assert check_exchange(default_conf)
+    assert log_has_re(
+        r"Exchange \"okex\" is officially supported by the Freqtrade development team\.",
+        caplog)
+    caplog.clear()
     # Test an available exchange, supported by ccxt
     default_conf.get('exchange').update({'name': 'huobipro'})
     assert check_exchange(default_conf)