Dataplane: Support prometheus dataplane contract for transformations and name matchers (#65237)

Co-authored-by: Brendan O'Handley <brendan.ohandley@grafana.com>

pkg/services/featuremgmt/registry.go

@@ -505,5 +505,12 @@ var (
 			State:       FeatureStateAlpha,
 			Owner:       grafanaObservabilityTracesAndProfilingSquad,
 		},
+		{
+			Name:         "dataplaneFrontendFallback",
+			Description:  "Support dataplane contract field name change for transformations and field name matchers where the name is different",
+			State:        FeatureStateAlpha,
+			FrontendOnly: true,
+			Owner:        grafanaObservabilityMetricsSquad,
+		},
 	}
 )

pkg/services/featuremgmt/toggles_gen.csv

@@ -75,3 +75,4 @@ alertStateHistoryLokiOnly,alpha,@grafana/alerting-squad,false,false,false,false
 unifiedRequestLog,alpha,@grafana/backend-platform,false,false,false,false
 renderAuthJWT,beta,@grafana/grafana-as-code,false,false,false,false
 pyroscopeFlameGraph,alpha,@grafana/observability-traces-and-profiling,false,false,false,false
+dataplaneFrontendFallback,alpha,@grafana/observability-metrics,false,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -310,4 +310,8 @@ const (
 	// FlagPyroscopeFlameGraph
 	// Changes flame graph to pyroscope one
 	FlagPyroscopeFlameGraph = "pyroscopeFlameGraph"
+
+	// FlagDataplaneFrontendFallback
+	// Support dataplane contract field name change for transformations and field name matchers where the name is different
+	FlagDataplaneFrontendFallback = "dataplaneFrontendFallback"
 )