Loki: Add dashboard and panel names as headers (#92096)

* feat(nameHeaders): add feature flag

* add safe parsing of headers

* use headers in loki datasource

* Loki: add option to pass headers to Loki

* Loki: add datasource tests for dashboard names

* cleanup

* DataSourceWithBackend: add test

* rename to `sanitizeHeader`

* Loki: add condition when to add headers

* Loki: add e2e tests

* Loki: change test name

pkg/services/featuremgmt/registry.go

@@ -1393,6 +1393,12 @@ var (
 			Stage:       FeatureStageExperimental,
 			Owner:       grafanaDashboardsSquad,
 		},
+		{
+			Name:        "lokiSendDashboardPanelNames",
+			Description: "Send dashboard and panel names to Loki when querying",
+			Stage:       FeatureStageExperimental,
+			Owner:       grafanaObservabilityLogsSquad,
+		},
 	}
 )
 

pkg/services/featuremgmt/toggles_gen.csv

@@ -183,3 +183,4 @@ prometheusAzureOverrideAudience,deprecated,@grafana/partner-datasources,false,fa
 backgroundPluginInstaller,experimental,@grafana/plugins-platform-backend,false,true,false
 dataplaneAggregator,experimental,@grafana/grafana-app-platform-squad,false,true,false
 adhocFilterOneOf,experimental,@grafana/dashboards-squad,false,false,false
+lokiSendDashboardPanelNames,experimental,@grafana/observability-logs,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -742,4 +742,8 @@ const (
 	// FlagAdhocFilterOneOf
 	// Exposes a new 'one of' operator for ad-hoc filters. This operator allows users to filter by multiple values in a single filter.
 	FlagAdhocFilterOneOf = "adhocFilterOneOf"
+
+	// FlagLokiSendDashboardPanelNames
+	// Send dashboard and panel names to Loki when querying
+	FlagLokiSendDashboardPanelNames = "lokiSendDashboardPanelNames"
 )

pkg/services/featuremgmt/toggles_gen.json

@@ -1704,6 +1704,21 @@
         "codeowner": "@grafana/observability-logs"
       }
     },
+    {
+      "metadata": {
+        "name": "lokiSendDashboardPanelNames",
+        "resourceVersion": "1724089497989",
+        "creationTimestamp": "2024-08-19T17:44:18Z",
+        "annotations": {
+          "grafana.app/updatedTimestamp": "2024-08-19 17:44:57.989565 +0000 UTC"
+        }
+      },
+      "spec": {
+        "description": "Send dashboard and panel names to Loki when querying",
+        "stage": "experimental",
+        "codeowner": "@grafana/observability-logs"
+      }
+    },
     {
       "metadata": {
         "name": "lokiStructuredMetadata",