[HistoryCollector] improve error description

Drakkar-Software · Oct 3, 2023 · 0228e9e · 0228e9e
1 parent 552f8aa
commit 0228e9e
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/Backtesting/collectors/exchanges/exchange_history_collector/history_collector.py b/Backtesting/collectors/exchanges/exchange_history_collector/history_collector.py
@@ -184,6 +184,12 @@ async def check_timestamps(self):
                 raise errors.DataCollectorError("start_timestamp is higher than end_timestamp")
 
     async def get_first_candle_timestamp(self, ideal_start_timestamp, symbol, time_frame):
-        return (
-            await self.exchange.get_symbol_prices(str(symbol), time_frame, limit=1, since=ideal_start_timestamp)
-        )[0][commons_enums.PriceIndexes.IND_PRICE_TIME.value]
+        try:
+            return (
+                await self.exchange.get_symbol_prices(str(symbol), time_frame, limit=1, since=ideal_start_timestamp)
+            )[0][commons_enums.PriceIndexes.IND_PRICE_TIME.value]
+        except (trading_errors.FailedRequest, IndexError) as err:
+            raise errors.DataCollectorError(
+                f"Impossible to initialize {self.exchange_name} data collector: {err}. This means that {symbol} "
+                f"for the {time_frame.value} time frame is not supported in this context on {self.exchange_name}."
+            )