Merge pull request #5067 from grafana/julia/add_started_at_default_filter_value

Add default value for `started_at` filter for `/alertgroups` internal endpoint

Author: Ferril

engine/apps/api/views/alert_group.py

@@ -332,6 +332,10 @@ def get_queryset(self, ignore_filtering_by_available_teams=False):
         alert_receive_channels_ids = list(alert_receive_channels_qs.values_list("id", flat=True))
         queryset = AlertGroup.objects.filter(channel__in=alert_receive_channels_ids)
 
+        # This is a quick fix to speed up requests from mobile app by adding default `started_at` filter value
+        if not self.request.query_params.get("started_at"):
+            queryset = queryset.filter(started_at__gte=timezone.now() - timezone.timedelta(days=30))
+
         if self.action in ("list", "stats") and settings.ALERT_GROUPS_DISABLE_PREFER_ORDERING_INDEX:
             # workaround related to MySQL "ORDER BY LIMIT Query Optimizer Bug"
             # read more: https://hackmysql.com/infamous-order-by-limit-query-optimizer-bug/