LibraryElements: Creates usage stats for panels and variables (#34476) (#34555)

* LibraryPanels: Adds usage collection

* Refactor: renames Panel and Variable consts

* Chore: initialize stats

* Refactor: moves library element migrations to migration namespace

(cherry picked from commit 7204a64717)

Co-authored-by: Hugo Häggmark <hugo.haggmark@grafana.com>

pkg/infra/metrics/metrics.go

@@ -185,6 +185,12 @@ var (
 	grafanaBuildVersion *prometheus.GaugeVec
 
 	grafanaPluginBuildInfoDesc *prometheus.GaugeVec
+
+	// StatsTotalLibraryPanels is a metric of total number of library panels stored in Grafana.
+	StatsTotalLibraryPanels prometheus.Gauge
+
+	// StatsTotalLibraryVariables is a metric of total number of library variables stored in Grafana.
+	StatsTotalLibraryVariables prometheus.Gauge
 )
 
 func init() {
@@ -547,6 +553,18 @@ func init() {
 		Help:      "number of evaluation calls",
 		Namespace: ExporterName,
 	})
+
+	StatsTotalLibraryPanels = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name:      "stat_totals_library_panels",
+		Help:      "total amount of library panels in the database",
+		Namespace: ExporterName,
+	})
+
+	StatsTotalLibraryVariables = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name:      "stat_totals_library_variables",
+		Help:      "total amount of library variables in the database",
+		Namespace: ExporterName,
+	})
 }
 
 // SetBuildInformation sets the build information for this binary
@@ -640,6 +658,8 @@ func initMetricVars() {
 		StatsTotalDashboardVersions,
 		StatsTotalAnnotations,
 		MAccessEvaluationCount,
+		StatsTotalLibraryPanels,
+		StatsTotalLibraryVariables,
 	)
 }
 

pkg/infra/usagestats/usage_stats.go

@@ -72,6 +72,8 @@ func (uss *UsageStatsService) GetUsageReport(ctx context.Context) (UsageReport,
 	metrics["stats.dashboard_versions.count"] = statsQuery.Result.DashboardVersions
 	metrics["stats.annotations.count"] = statsQuery.Result.Annotations
 	metrics["stats.alert_rules.count"] = statsQuery.Result.AlertRules
+	metrics["stats.library_panels.count"] = statsQuery.Result.LibraryPanels
+	metrics["stats.library_variables.count"] = statsQuery.Result.LibraryVariables
 	validLicCount := 0
 	if uss.License.HasValidLicense() {
 		validLicCount = 1
@@ -317,6 +319,8 @@ func (uss *UsageStatsService) updateTotalStats() {
 	metrics.StatsTotalDashboardVersions.Set(float64(statsQuery.Result.DashboardVersions))
 	metrics.StatsTotalAnnotations.Set(float64(statsQuery.Result.Annotations))
 	metrics.StatsTotalAlertRules.Set(float64(statsQuery.Result.AlertRules))
+	metrics.StatsTotalLibraryPanels.Set(float64(statsQuery.Result.LibraryPanels))
+	metrics.StatsTotalLibraryVariables.Set(float64(statsQuery.Result.LibraryVariables))
 
 	dsStats := models.GetDataSourceStatsQuery{}
 	if err := uss.Bus.Dispatch(&dsStats); err != nil {

pkg/infra/usagestats/usage_stats_test.go

@@ -63,6 +63,8 @@ func TestMetrics(t *testing.T) {
 				DashboardVersions:     16,
 				Annotations:           17,
 				AlertRules:            18,
+				LibraryPanels:         19,
+				LibraryVariables:      20,
 			}
 			getSystemStatsQuery = query
 			return nil
@@ -313,6 +315,8 @@ func TestMetrics(t *testing.T) {
 			assert.Equal(t, 16, metrics.Get("stats.dashboard_versions.count").MustInt())
 			assert.Equal(t, 17, metrics.Get("stats.annotations.count").MustInt())
 			assert.Equal(t, 18, metrics.Get("stats.alert_rules.count").MustInt())
+			assert.Equal(t, 19, metrics.Get("stats.library_panels.count").MustInt())
+			assert.Equal(t, 20, metrics.Get("stats.library_variables.count").MustInt())
 
 			assert.Equal(t, 9, metrics.Get("stats.ds."+models.DS_ES+".count").MustInt())
 			assert.Equal(t, 10, metrics.Get("stats.ds."+models.DS_PROMETHEUS+".count").MustInt())