Add Loki alert state history annotations feature toggle (#78970)

* Add no-op Loki alert state history annotations feature toggle

* Better feature toggle description

Co-authored-by: Alexander Weaver <weaver.alex.d@gmail.com>

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -168,4 +168,5 @@ export interface FeatureToggles {
   pluginsSkipHostEnvVars?: boolean;
   regressionTransformation?: boolean;
   displayAnonymousStats?: boolean;
+  alertStateHistoryAnnotationsFromLoki?: boolean;
 }

pkg/services/featuremgmt/registry.go

@@ -1260,6 +1260,16 @@ var (
 			AllowSelfServe: falsePtr,
 			Expression:     "true", // enabled by default
 		},
+		{
+			Name:              "alertStateHistoryAnnotationsFromLoki",
+			Description:       "Enable using Loki as the source for panel annotations generated by alert rules",
+			Stage:             FeatureStageExperimental,
+			Owner:             grafanaAlertingSquad,
+			HideFromAdminPage: true,
+			HideFromDocs:      true,
+			RequiresRestart:   true,
+			Created:           time.Date(2023, time.November, 30, 12, 0, 0, 0, time.UTC),
+		},
 	}
 )
 

pkg/services/featuremgmt/toggles_gen.csv

@@ -149,3 +149,4 @@ logRowsPopoverMenu,experimental,@grafana/observability-logs,2023-11-16,false,fal
 pluginsSkipHostEnvVars,experimental,@grafana/plugins-platform-backend,2023-11-15,false,false,false,false
 regressionTransformation,experimental,@grafana/grafana-bi-squad,2023-11-24,false,false,false,true
 displayAnonymousStats,GA,@grafana/identity-access-team,2023-11-29,false,false,false,true
+alertStateHistoryAnnotationsFromLoki,experimental,@grafana/alerting-squad,2023-11-30,false,false,true,false

pkg/services/featuremgmt/toggles_gen.go

@@ -606,4 +606,8 @@ const (
 	// FlagDisplayAnonymousStats
 	// Enables anonymous stats to be shown in the UI for Grafana
 	FlagDisplayAnonymousStats = "displayAnonymousStats"
+
+	// FlagAlertStateHistoryAnnotationsFromLoki
+	// Enable using Loki as the source for panel annotations generated by alert rules
+	FlagAlertStateHistoryAnnotationsFromLoki = "alertStateHistoryAnnotationsFromLoki"
 )