)

// loadClusterNotificationMetrics - `MetricsLoaderFn` for cluster notification metrics.
func loadClusterNotificationMetrics(_ context.Context, m MetricValues, _ *metricsCache) error {
	if globalEventNotifier == nil {
		return nil
	}

	nstats := globalEventNotifier.targetList.Stats()

		[]MetricDescriptor{
			notificationCurrentSendInProgressMD,
			notificationEventsErrorsTotalMD,
			notificationEventsSentTotalMD,
			notificationEventsSkippedTotalMD,
		},
		loadClusterNotificationMetrics,
	)

	clusterIAMMG := NewMetricsGroup(clusterIAMCollectorPath,
		[]MetricDescriptor{
			lastSyncDurationMillisMD,
			pluginAuthnServiceFailedRequestsMinuteMD,
			pluginAuthnServiceLastFailSecondsMD,