conditionally enable searching for alert groups via env var (#4287)

# What this PR does

re-enables the search for alert groups

## Which issue(s) this PR closes

Closes #2232

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## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

---------

Co-authored-by: Joey Orlando <joey.orlando@grafana.com>
Co-authored-by: Joey Orlando <joseph.t.orlando@gmail.com>

engine/apps/api/views/alert_group.py

@@ -1,5 +1,6 @@
 import typing
 
+from django.conf import settings
 from django.core.exceptions import ObjectDoesNotExist
 from django.db.models import Count, Max, Q
 from django_filters import rest_framework as filters
@@ -275,6 +276,11 @@ class AlertGroupView(
     pagination_class = AlertGroupCursorPaginator
 
     filter_backends = [SearchFilter, filters.DjangoFilterBackend]
+    search_fields = (
+        ["=public_primary_key", "=inside_organization_number", "web_title_cache"]
+        if settings.FEATURE_ALERT_GROUP_SEARCH_ENABLED
+        else []
+    )
     filterset_class = AlertGroupFilter
 
     def get_serializer_class(self):

engine/settings/base.py

@@ -71,6 +71,7 @@
 FEATURE_LABELS_ENABLED_FOR_ALL = getenv_boolean("FEATURE_LABELS_ENABLED_FOR_ALL", default=False)
 # Enable labels feature for organizations from the list. Use OnCall organization ID, for this flag
 FEATURE_LABELS_ENABLED_PER_ORG = getenv_list("FEATURE_LABELS_ENABLED_PER_ORG", default=list())
+FEATURE_ALERT_GROUP_SEARCH_ENABLED = getenv_boolean("FEATURE_ALERT_GROUP_SEARCH_ENABLED", default=False)
 
 TWILIO_API_KEY_SID = os.environ.get("TWILIO_API_KEY_SID")
 TWILIO_API_KEY_SECRET = os.environ.get("TWILIO_API_KEY_SECRET")

grafana-plugin/src/models/alertgroup/alertgroup.ts

@@ -65,7 +65,7 @@ export class AlertGroupStore {
       params: {
         query: {
           ...incidentFilters,
-          search,
+          search: incidentFilters?.search || search,
           perpage: this.alertsSearchResult?.page_size,
           cursor: this.incidentsCursor,
           is_root: true,