Fix bug causing /balance to fail

freqtrade/exchange/__init__.py

@@ -322,7 +322,7 @@ class Exchange(object):
                 return data
             except (ccxt.NetworkError, ccxt.ExchangeError) as e:
                 raise TemporaryError(
-                    f'Could not load ticker history due to {e.__class__.__name__}. Message: {e}')
+                    f'Could not load ticker due to {e.__class__.__name__}. Message: {e}')
             except ccxt.BaseError as e:
                 raise OperationalException(e)
         else:

freqtrade/rpc/rpc.py

@@ -13,6 +13,7 @@ import sqlalchemy as sql
 from numpy import mean, nan_to_num
 from pandas import DataFrame
 
+from freqtrade import TemporaryError
 from freqtrade.fiat_convert import CryptoToFiatConverter
 from freqtrade.misc import shorten_date
 from freqtrade.persistence import Trade
@@ -271,10 +272,13 @@ class RPC(object):
             if coin == 'BTC':
                 rate = 1.0
             else:
-                if coin == 'USDT':
-                    rate = 1.0 / self._freqtrade.exchange.get_ticker('BTC/USDT', False)['bid']
-                else:
-                    rate = self._freqtrade.exchange.get_ticker(coin + '/BTC', False)['bid']
+                try:
+                    if coin == 'USDT':
+                        rate = 1.0 / self._freqtrade.exchange.get_ticker('BTC/USDT', False)['bid']
+                    else:
+                        rate = self._freqtrade.exchange.get_ticker(coin + '/BTC', False)['bid']
+                except TemporaryError:
+                    continue
             est_btc: float = rate * balance['total']
             total = total + est_btc
             output.append({

freqtrade/tests/rpc/test_rpc.py

@@ -286,11 +286,12 @@ def test_rpc_balance_handle(default_conf, mocker):
             'used': 2.0,
         },
         'ETH': {
-            'free': 0.0,
-            'total': 0.0,
-            'used': 0.0,
+            'free': 1.0,
+            'total': 5.0,
+            'used': 4.0,
         }
     }
+    # ETH will be skipped due to mocked Error below
 
     mocker.patch.multiple(
         'freqtrade.fiat_convert.Market',
@@ -302,7 +303,8 @@ def test_rpc_balance_handle(default_conf, mocker):
     mocker.patch.multiple(
         'freqtrade.exchange.Exchange',
         validate_pairs=MagicMock(),
-        get_balances=MagicMock(return_value=mock_balance)
+        get_balances=MagicMock(return_value=mock_balance),
+        get_ticker=MagicMock(side_effect=TemporaryError('Could not load ticker due to xxx'))
     )
 
     freqtradebot = FreqtradeBot(default_conf)
@@ -323,31 +325,6 @@ def test_rpc_balance_handle(default_conf, mocker):
     }]
     assert result['total'] == 12.0
 
-    mock_balance = {
-        'ETH': {
-            'free': 10.0,
-            'total': 12.0,
-            'used': 2.0,
-        }
-    }
-    mocker.patch.multiple(
-        'freqtrade.exchange.Exchange',
-        validate_pairs=MagicMock(),
-        get_balances=MagicMock(return_value=mock_balance),
-        get_ticker=MagicMock(side_effect=TemporaryError('Could not load ticker due to xxx'))
-    )
-    result = rpc._rpc_balance(default_conf['fiat_display_currency'])
-    assert prec_satoshi(result['total'], 12)
-    assert prec_satoshi(result['value'], 180000)
-    assert 'USD' == result['symbol']
-    assert result['currencies'] == [{
-        'currency': 'ETH',
-        'available': 10.0,
-        'balance': 12.0,
-        'pending': 2.0,
-        'est_btc': 12.0,
-    }]
-
 
 def test_rpc_start(mocker, default_conf) -> None:
     patch_coinmarketcap(mocker)