[Rest] Support exponential backoff and retry with urllib3 < 2 and new retry parameters

Author: Viktxrrr

atlassian/rest_client.py

@@ -239,17 +239,19 @@ def _calculate_backoff_value(self, retry_count):
         """
         Calculate the backoff delay for a given retry attempt.
 
-        This method computes an exponential backoff value based on the retry count.
-        Optionally, it adds a random jitter to introduce variability in the delay
-        to prevent synchronized retries in distributed systems. The backoff value is
-        clamped between 0 and a maximum allowed delay (`self.max_backoff_seconds`).
+        This method computes an exponential backoff delay based on the retry count and
+        a configurable backoff factor. It optionally adds a random jitter to introduce
+        variability in the delay, which can help prevent synchronized retries in
+        distributed systems. The calculated backoff delay is clamped between 0 and a
+        maximum allowable delay (`self.max_backoff_seconds`) to avoid excessively long
+        wait times.
 
         :param retry_count: int, REQUIRED: The current retry attempt number (1-based).
             Determines the exponential backoff delay.
         :return: float: The calculated backoff delay in seconds, adjusted for jitter
             and clamped to the maximum allowable value.
         """
-        backoff_value = 2 ** (retry_count - 1)
+        backoff_value = self.backoff_factor * (2 ** (retry_count - 1))
         if self.backoff_jitter != 0.0:
             backoff_value += random.random() * self.backoff_jitter
         return float(max(0, min(self.max_backoff_seconds, backoff_value)))