added custom delay between each retry attempt

Author: Andrei Neagu

packages/service-library/src/servicelib/deferred_tasks/_base_deferred_handler.py

@@ -45,6 +45,14 @@ async def get_retries(cls, context: DeferredContext) -> NonNegativeInt:
         assert context  # nosec
         return 0
 
+    @classmethod
+    async def get_retry_delay(cls, context: DeferredContext) -> timedelta:
+        """
+        returns: the delay between eatch retry attempt (default: 0s)
+        """
+        assert context  # nosec
+        return timedelta(seconds=0)
+
     @classmethod
     @abstractmethod
     async def get_timeout(cls, context: DeferredContext) -> timedelta: