feat: collect prometheus data about archived features (#6728)

src/lib/features/instance-stats/instance-stats-service.ts

@@ -39,6 +39,7 @@ export interface InstanceStats {
     serviceAccounts: number;
     apiTokens: Map<string, number>;
     featureToggles: number;
+    archivedFeatureToggles: number;
     projects: ProjectModeCount[];
     contextFields: number;
     roles: number;
@@ -192,6 +193,12 @@ export class InstanceStatsService {
         });
     }
 
+    getArchivedToggleCount(): Promise<number> {
+        return this.featureToggleStore.count({
+            archived: true,
+        });
+    }
+
     async hasOIDC(): Promise<boolean> {
         const settings = await this.settingStore.get<{ enabled: boolean }>(
             'unleash.enterprise.auth.oidc',
@@ -215,6 +222,7 @@ export class InstanceStatsService {
         const versionInfo = await this.versionService.getVersionInfo();
         const [
             featureToggles,
+            archivedFeatureToggles,
             users,
             serviceAccounts,
             apiTokens,
@@ -237,6 +245,7 @@ export class InstanceStatsService {
             previousDayMetricsBucketsCount,
         ] = await Promise.all([
             this.getToggleCount(),
+            this.getArchivedToggleCount(),
             this.userStore.count(),
             this.userStore.countServiceAccounts(),
             this.apiTokenStore.countByType(),
@@ -269,6 +278,7 @@ export class InstanceStatsService {
             apiTokens,
             activeUsers,
             featureToggles,
+            archivedFeatureToggles,
             projects,
             contextFields,
             roles,

src/lib/metrics.test.ts

@@ -190,6 +190,11 @@ test('should collect metrics for feature toggle size', async () => {
     expect(metrics).toMatch(/feature_toggles_total\{version="(.*)"\} 0/);
 });
 
+test('should collect metrics for archived feature toggle size', async () => {
+    const metrics = await prometheusRegister.metrics();
+    expect(metrics).toMatch(/feature_toggles_archived_total 0/);
+});
+
 test('should collect metrics for total client apps', async () => {
     await statsService.refreshAppCountSnapshot();
     const metrics = await prometheusRegister.metrics();

src/lib/metrics.ts

@@ -108,6 +108,11 @@ export default class MetricsMonitor {
             help: 'Number of feature toggles',
             labelNames: ['version'],
         });
+
+        const featureTogglesArchivedTotal = createGauge({
+            name: 'feature_toggles_archived_total',
+            help: 'Number of archived feature toggles',
+        });
         const usersTotal = createGauge({
             name: 'users_total',
             help: 'Number of users',
@@ -262,6 +267,9 @@ export default class MetricsMonitor {
                     .labels({ version })
                     .set(stats.featureToggles);
 
+                featureTogglesArchivedTotal.reset();
+                featureTogglesArchivedTotal.set(stats.archivedFeatureToggles);
+
                 usersTotal.reset();
                 usersTotal.set(stats.users);
 

src/lib/routes/admin-api/instance-admin.ts

@@ -94,6 +94,7 @@ class InstanceAdminController extends Controller {
             featureExports: 0,
             featureImports: 0,
             featureToggles: 29,
+            archivedFeatureToggles: 10,
             groups: 3,
             instanceId: 'ed3861ae-78f9-4e8c-8e57-b57efc15f82b',
             projects: 4,