Fix issue with SSE queues getting lost #3

alertproviders/alert_provider.py

@@ -30,6 +30,9 @@ class AlertProvider:
     # because alerts could be created at any point for any time in the future. Rely on hashcode-based id matching
     # to deal with duplicates.
     def submit_batch(self, alerts):
+        # Sort the batch so that earliest ones go in first. This helps keep the ordering correct when alerts are fired
+        # off to SSE listeners.
+        alerts = sorted(alerts, key=lambda alert: (alert.start_time if alert and alert.start_time else 0))
         for alert in alerts:
             # Fill in any blanks and add to the list
             alert.infer_missing()