add fetch_orders exchange wrapper

freqtrade/exchange/exchange.py

@@ -1432,6 +1432,29 @@ class Exchange:
         except ccxt.BaseError as e:
             raise OperationalException(e) from e
 
+    @retrier(retries=0)
+    def fetch_orders(self, pair: str, since: datetime) -> List[Dict]:
+        """
+        Fetch all orders for a pair "since"
+        :param pair: Pair for the query
+        :param since: Starting time for the query
+        """
+        if self._config['dry_run'] or not self.exchange_has('fetchOrders'):
+            return []
+        try:
+            since_ms = int((since.timestamp() - 10) * 1000)
+            orders: List[Dict] = self._api.fetch_orders(pair, since=since_ms)
+            self._log_exchange_response('fetch_orders', orders)
+            orders = [self._order_contracts_to_amount(o) for o in orders]
+            return orders
+        except ccxt.DDoSProtection as e:
+            raise DDosProtection(e) from e
+        except (ccxt.NetworkError, ccxt.ExchangeError) as e:
+            raise TemporaryError(
+                f'Could not fetch positions due to {e.__class__.__name__}. Message: {e}') from e
+        except ccxt.BaseError as e:
+            raise OperationalException(e) from e
+
     @retrier
     def fetch_trading_fees(self) -> Dict[str, Any]:
         """

tests/exchange/test_exchange.py

@@ -1773,6 +1773,32 @@ def test_fetch_positions(default_conf, mocker, exchange_name):
                            "fetch_positions", "fetch_positions")
 
 
+@pytest.mark.parametrize("exchange_name", EXCHANGES)
+def test_fetch_orders(default_conf, mocker, exchange_name, limit_order):
+
+    api_mock = MagicMock()
+    api_mock.fetch_orders = MagicMock(return_value=[
+        limit_order['buy'],
+        limit_order['sell'],
+    ])
+    mocker.patch(f'{EXMS}.exchange_has', return_value=True)
+    start_time = datetime.now(timezone.utc) - timedelta(days=5)
+
+    exchange = get_patched_exchange(mocker, default_conf, api_mock, id=exchange_name)
+    # Not available in dry-run
+    assert exchange.fetch_orders('mocked', start_time) == []
+
+    default_conf['dry_run'] = False
+
+    exchange = get_patched_exchange(mocker, default_conf, api_mock, id=exchange_name)
+    res = exchange.fetch_orders('mocked', start_time)
+    assert len(res) == 2
+
+    ccxt_exceptionhandlers(mocker, default_conf, api_mock, exchange_name,
+                           "fetch_orders", "fetch_orders", retries=1,
+                           pair='mocked', since=start_time)
+
+
 def test_fetch_trading_fees(default_conf, mocker):
     api_mock = MagicMock()
     tick = {