Loki: Enable dataplane-compliant metric data by default (#67137)

loki: enable dataplane-compliant metric data by default

docs/sources/setup-grafana/configure-grafana/feature-toggles/index.md

@@ -36,6 +36,7 @@ Some stable features are enabled by default. You can disable a stable feature by
 | `logsSampleInExplore`               | Enables access to the logs sample feature in Explore                                                                                                                                                | Yes                |
 | `logsContextDatasourceUi`           | Allow datasource to provide custom UI for context view                                                                                                                                              | Yes                |
 | `prometheusDataplane`               | Changes responses to from Prometheus to be compliant with the dataplane specification. In particular it sets the numeric Field.Name from 'Value' to the value of the `__name__` label when present. | Yes                |
+| `lokiMetricDataplane`               | Changes metric responses from Loki to be compliant with the dataplane specification.                                                                                                                | Yes                |
 | `dataplaneFrontendFallback`         | Support dataplane contract field name change for transformations and field name matchers where the name is different                                                                                | Yes                |
 | `useCachingService`                 | When turned on, the new query and resource caching implementation using a wire service inject will be used in place of the previous middleware implementation                                       |                    |
 
@@ -101,7 +102,6 @@ Alpha features might be changed or removed without prior notice.
 | `prometheusResourceBrowserCache`   | Displays browser caching options in Prometheus data source configuration                                       |
 | `influxdbBackendMigration`         | Query InfluxDB InfluxQL without the proxy                                                                      |
 | `clientTokenRotation`              | Replaces the current in-request token rotation so that the client initiates the rotation                       |
-| `lokiMetricDataplane`              | Changes responses from Loki to be compliant with the dataplane specification.                                  |
 | `disableSSEDataplane`              | Disables dataplane specific processing in server side expressions.                                             |
 | `alertStateHistoryLokiSecondary`   | Enable Grafana to write alert state history to an external Loki instance in addition to Grafana annotations.   |
 | `alertStateHistoryLokiPrimary`     | Enable a remote Loki instance as the primary source for state history reads.                                   |

pkg/services/featuremgmt/registry.go

@@ -435,8 +435,9 @@ var (
 		},
 		{
 			Name:        "lokiMetricDataplane",
-			Description: "Changes responses from Loki to be compliant with the dataplane specification.",
-			State:       FeatureStateAlpha,
+			Description: "Changes metric responses from Loki to be compliant with the dataplane specification.",
+			State:       FeatureStateStable,
+			Expression:  "true",
 			Owner:       grafanaObservabilityLogsSquad,
 		},
 		{

pkg/services/featuremgmt/toggles_gen.csv

@@ -63,7 +63,7 @@ prometheusResourceBrowserCache,alpha,@grafana/observability-metrics,false,false,
 influxdbBackendMigration,alpha,@grafana/observability-metrics,false,false,false,true
 clientTokenRotation,alpha,@grafana/grafana-authnz-team,false,false,false,false
 prometheusDataplane,stable,@grafana/observability-metrics,false,false,false,false
-lokiMetricDataplane,alpha,@grafana/observability-logs,false,false,false,false
+lokiMetricDataplane,stable,@grafana/observability-logs,false,false,false,false
 dataplaneFrontendFallback,stable,@grafana/observability-metrics,false,false,false,true
 disableSSEDataplane,alpha,@grafana/observability-metrics,false,false,false,false
 alertStateHistoryLokiSecondary,alpha,@grafana/alerting-squad,false,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -264,7 +264,7 @@ const (
 	FlagPrometheusDataplane = "prometheusDataplane"
 
 	// FlagLokiMetricDataplane
-	// Changes responses from Loki to be compliant with the dataplane specification.
+	// Changes metric responses from Loki to be compliant with the dataplane specification.
 	FlagLokiMetricDataplane = "lokiMetricDataplane"
 
 	// FlagDataplaneFrontendFallback