Merge remote-tracking branch 'origin/develop' into list-pairs2

freqtrade/exchange/exchange.py

@@ -166,7 +166,7 @@ class Exchange:
     }
     _ft_has: Dict = {}
 
-    def __init__(self, config: dict) -> None:
+    def __init__(self, config: dict, validate: bool = True) -> None:
         """
         Initializes this module with the given config,
         it does basic validation whether the specified exchange and pairs are valid.
@@ -223,13 +223,13 @@ class Exchange:
         # Converts the interval provided in minutes in config to seconds
         self.markets_refresh_interval: int = exchange_config.get(
             "markets_refresh_interval", 60) * 60
-        # Initial markets load
-        self._load_markets()
-
-        # Check if all pairs are available
-        self.validate_pairs(config['exchange']['pair_whitelist'])
-        self.validate_ordertypes(config.get('order_types', {}))
-        self.validate_order_time_in_force(config.get('order_time_in_force', {}))
+        if validate:
+            # Initial markets load
+            self._load_markets()
+            # Check if all pairs are available
+            self.validate_pairs(config['exchange']['pair_whitelist'])
+            self.validate_ordertypes(config.get('order_types', {}))
+            self.validate_order_time_in_force(config.get('order_time_in_force', {}))
 
     def __del__(self):
         """

freqtrade/resolvers/exchange_resolver.py

@@ -17,7 +17,7 @@ class ExchangeResolver(IResolver):
 
     __slots__ = ['exchange']
 
-    def __init__(self, exchange_name: str, config: dict) -> None:
+    def __init__(self, exchange_name: str, config: dict, validate: bool = True) -> None:
         """
         Load the custom class from config parameter
         :param config: configuration dictionary
@@ -26,7 +26,8 @@ class ExchangeResolver(IResolver):
         exchange_name = MAP_EXCHANGE_CHILDCLASS.get(exchange_name, exchange_name)
         exchange_name = exchange_name.title()
         try:
-            self.exchange = self._load_exchange(exchange_name, kwargs={'config': config})
+            self.exchange = self._load_exchange(exchange_name, kwargs={'config': config,
+                                                                       'validate': validate})
         except ImportError:
             logger.info(
                 f"No {exchange_name} specific subclass found. Using the generic class instead.")
@@ -45,7 +46,7 @@ class ExchangeResolver(IResolver):
         try:
             ex_class = getattr(exchanges, exchange_name)
 
-            exchange = ex_class(kwargs['config'])
+            exchange = ex_class(**kwargs)
             if exchange:
                 logger.info(f"Using resolved exchange '{exchange_name}'...")
                 return exchange

freqtrade/rpc/api_server.py

@@ -2,7 +2,7 @@ import logging
 import threading
 from datetime import date, datetime
 from ipaddress import IPv4Address
-from typing import Dict
+from typing import Dict, Callable, Any
 
 from arrow import Arrow
 from flask import Flask, jsonify, request
@@ -34,41 +34,45 @@ class ArrowJSONEncoder(JSONEncoder):
         return JSONEncoder.default(self, obj)
 
 
+# Type should really be Callable[[ApiServer, Any], Any], but that will create a circular dependency
+def require_login(func: Callable[[Any, Any], Any]):
+
+    def func_wrapper(obj, *args, **kwargs):
+
+        auth = request.authorization
+        if auth and obj.check_auth(auth.username, auth.password):
+            return func(obj, *args, **kwargs)
+        else:
+            return jsonify({"error": "Unauthorized"}), 401
+
+    return func_wrapper
+
+
+# Type should really be Callable[[ApiServer], Any], but that will create a circular dependency
+def rpc_catch_errors(func: Callable[[Any], Any]):
+
+    def func_wrapper(obj, *args, **kwargs):
+
+        try:
+            return func(obj, *args, **kwargs)
+        except RPCException as e:
+            logger.exception("API Error calling %s: %s", func.__name__, e)
+            return obj.rest_error(f"Error querying {func.__name__}: {e}")
+
+    return func_wrapper
+
+
 class ApiServer(RPC):
     """
     This class runs api server and provides rpc.rpc functionality to it
 
-    This class starts a none blocking thread the api server runs within
+    This class starts a non-blocking thread the api server runs within
     """
 
-    def rpc_catch_errors(func):
-
-        def func_wrapper(self, *args, **kwargs):
-
-            try:
-                return func(self, *args, **kwargs)
-            except RPCException as e:
-                logger.exception("API Error calling %s: %s", func.__name__, e)
-                return self.rest_error(f"Error querying {func.__name__}: {e}")
-
-        return func_wrapper
-
     def check_auth(self, username, password):
         return (username == self._config['api_server'].get('username') and
                 password == self._config['api_server'].get('password'))
 
-    def require_login(func):
-
-        def func_wrapper(self, *args, **kwargs):
-
-            auth = request.authorization
-            if auth and self.check_auth(auth.username, auth.password):
-                return func(self, *args, **kwargs)
-            else:
-                return jsonify({"error": "Unauthorized"}), 401
-
-        return func_wrapper
-
     def __init__(self, freqtrade) -> None:
         """
         Init the api server, and init the super class RPC

freqtrade/utils.py

@@ -128,7 +128,7 @@ def start_list_timeframes(args: Dict[str, Any]) -> None:
     config['ticker_interval'] = None
 
     # Init exchange
-    exchange = ExchangeResolver(config['exchange']['name'], config).exchange
+    exchange = ExchangeResolver(config['exchange']['name'], config, validate=False).exchange
 
     if args['print_one_column']:
         print('\n'.join(exchange.timeframes))