Loki: Add predefined operations functionality behind feature flag (#69379)

* Add feature toggle for lokiPredefinedOperations

* Add config editor for predefined operations

* Add predefined patterns to editor

* Update content in tooltip

* Update public/app/plugins/datasource/loki/configuration/QuerySettings.tsx

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

* Update public/app/plugins/datasource/loki/components/LokiQueryEditor.tsx

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

* Add experimental badge

---------

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

pkg/services/featuremgmt/registry.go

@@ -535,5 +535,12 @@ var (
 			State:        FeatureStateAlpha,
 			Owner:        grafanaUserEssentialsSquad,
 		},
+		{
+			Name:         "lokiPredefinedOperations",
+			Description:  "Adds predefined query operations to Loki query editor",
+			FrontendOnly: true,
+			State:        FeatureStateAlpha,
+			Owner:        grafanaObservabilityLogsSquad,
+		},
 	}
 )

pkg/services/featuremgmt/toggles_gen.csv

@@ -78,3 +78,4 @@ faroDatasourceSelector,beta,@grafana/app-o11y,false,false,false,true
 enableDatagridEditing,beta,@grafana/grafana-bi-squad,false,false,false,true
 dataSourcePageHeader,beta,@grafana/enterprise-datasources,false,false,false,true
 extraThemes,alpha,@grafana/user-essentials,false,false,false,true
+lokiPredefinedOperations,alpha,@grafana/observability-logs,false,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -322,4 +322,8 @@ const (
 	// FlagExtraThemes
 	// Enables extra themes
 	FlagExtraThemes = "extraThemes"
+
+	// FlagLokiPredefinedOperations
+	// Adds predefined query operations to Loki query editor
+	FlagLokiPredefinedOperations = "lokiPredefinedOperations"
 )