Update find contact point name, receiver could be missing key (#2046)

Fixes issue when syncing contact points and there are receiver configs
with no `grafana_managed_receiver_configs` key.
(eg. `{"name": "autogen-contact-point-default"}`)

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Helm chart: fix bugs in helm chart with external postgresql configuration by @alexintech ([#2036](https://github.com/grafana/oncall/pull/2036))
 - Properly address `Organization.DoesNotExist` exceptions thrown which result in HTTP 500 for the Slack `interactive_api_endpoint`
   endpoint by @joeyorlando ([#2040](https://github.com/grafana/oncall/pull/2040))
+- Fix issue when trying to sync Grafana contact point and config receivers miss a key ([#2046](https://github.com/grafana/oncall/pull/2046))
 
 ### Changed
 

engine/apps/alerts/grafana_alerting_sync_manager/grafana_alerting_sync.py

@@ -540,7 +540,7 @@ def _find_name_of_contact_point_by_uid(self, contact_point_uid, receivers) -> st
         name_in_alerting = None
         # find name of contact point in alerting config by contact point uid
         for receiver in receivers:
-            receiver_configs = receiver["grafana_managed_receiver_configs"]
+            receiver_configs = receiver.get("grafana_managed_receiver_configs", [])
             for receiver_config in receiver_configs:
                 if receiver_config["uid"] == contact_point_uid:
                     name_in_alerting = receiver_config["name"]

engine/apps/alerts/tests/test_grafana_alerting_sync.py

@@ -0,0 +1,26 @@
+import pytest
+
+from apps.alerts.grafana_alerting_sync_manager.grafana_alerting_sync import GrafanaAlertingSyncManager
+
+
+@pytest.mark.django_db
+def test_find_name_of_contact_point_grafana_datasource(make_organization, make_alert_receive_channel):
+    organization = make_organization()
+    alert_receive_channel = make_alert_receive_channel(organization)
+    sync_manager = GrafanaAlertingSyncManager(alert_receive_channel)
+
+    receivers = [
+        {"name": "autogen-contact-point-default"},
+        {
+            "name": "testing",
+            "grafana_managed_receiver_configs": [
+                {
+                    "uid": "some-uid",
+                    "name": "testing",
+                }
+            ],
+        },
+    ]
+
+    name = sync_manager.find_name_of_contact_point("some-uid", True, receivers)
+    assert name == "testing"