}

// LoadUser - attempts to load user info from storage and updates cache.
func (store *IAMStoreSys) LoadUser(ctx context.Context, accessKey string) {
	cache := store.lock()
	defer store.unlock()

	cache.updatedAt = time.Now()

	_, found := cache.iamUsersMap[accessKey]

	// Check for regular user access key
	if !found {
		store.loadUser(ctx, accessKey, regUser, cache.iamUsersMap)

			uerr := globalIAMSys.store.loadUsers(ctx, regUser, userAccounts)
			if uerr != nil {
				return info, errSRBackendIssue(uerr)
			}

			serr := globalIAMSys.store.loadUsers(ctx, svcUser, userAccounts)
			if serr != nil {
				return info, errSRBackendIssue(serr)
			}

			terr := globalIAMSys.store.loadUsers(ctx, stsUser, userAccounts)
			if terr != nil {

				writeErrorResponse(ctx, w, exportError(ctx, err, iamFile, ""), r.URL)
				return
			}
		case allUsersFile:
			userIdentities := make(map[string]UserIdentity)
			err := globalIAMSys.store.loadUsers(ctx, regUser, userIdentities)
			if err != nil {
				writeErrorResponse(ctx, w, exportError(ctx, err, iamFile, ""), r.URL)
				return
			}
			userAccounts := make(map[string]madmin.AddOrUpdateUserReq)

// JoinLoaders - joins multiple loaders into a single loader. The returned
// loader will call each of the given loaders in order. If any of the loaders
// return an error, the returned loader will return that error.
func JoinLoaders(loaders ...MetricsLoaderFn) MetricsLoaderFn {
	return func(ctx context.Context, m MetricValues, c *metricsCache) error {
		for _, loader := range loaders {
			if err := loader(ctx, m, c); err != nil {