feat: debug metrics flag (#7108)

src/lib/__snapshots__/create-config.test.ts.snap

@@ -81,6 +81,7 @@ exports[`should create default config 1`] = `
       "celebrateUnleash": false,
       "collectTrafficDataUsage": false,
       "createProjectWithEnvironmentConfig": false,
+      "debugMetrics": false,
       "demo": false,
       "disableBulkToggle": false,
       "disableMetrics": false,

src/lib/features/metrics/client-metrics/metrics-service-v2.ts

@@ -137,6 +137,10 @@ export default class ClientMetricsServiceV2 {
         data: ClientMetricsSchema,
         clientIp: string,
     ): Promise<void> {
+        if (this.flagResolver.isEnabled('debugMetrics')) {
+            this.logger.debug(`Metrics received: ${JSON.stringify(data)}`);
+        }
+
         const value = await clientMetricsSchema.validateAsync(data);
         const toggleNames = Object.keys(value.bucket.toggles).filter(
             (name) =>

src/lib/types/experimental.ts

@@ -62,7 +62,8 @@ export type IFlagKey =
     | 'createProjectWithEnvironmentConfig'
     | 'manyStrategiesPagination'
     | 'newCreateProjectUI'
-    | 'enableLegacyVariants';
+    | 'enableLegacyVariants'
+    | 'debugMetrics';
 
 export type IFlags = Partial<{ [key in IFlagKey]: boolean | Variant }>;
 
@@ -299,6 +300,10 @@ const flags: IFlags = {
         process.env.UNLEASH_EXPERIMENTAL_ENABLE_LEGACY_VARIANTS,
         false,
     ),
+    debugMetrics: parseEnvVarBoolean(
+        process.env.UNLEASH_EXPERIMENTAL_DEBUG_METRICS,
+        false,
+    ),
 };
 
 export const defaultExperimentalOptions: IExperimentalOptions = {