if err != nil {
			return np, grid.NewRemoteErr(err)
		}
		subSys := vars.Get(peerRESTSubSys)
		// Apply dynamic values.
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()
		if subSys == "" {
			err = applyDynamicConfig(ctx, objAPI, srvCfg)
		} else {
			err = applyDynamicConfigForSubSys(ctx, objAPI, srvCfg, subSys)
		}
		if err != nil {
			return np, grid.NewRemoteErr(err)

func (c Config) Merge() Config {
	cp := New()
	for subSys, tgtKV := range c {
		for tgt := range tgtKV {
			ckvs := c[subSys][tgt]
			for _, kv := range cp[subSys][Default] {
				_, ok := c[subSys][tgt].Lookup(kv.Key)
				if !ok {
					ckvs.Set(kv.Key, kv.Value)
				}
			}
			if _, ok := cp[subSys]; !ok {
				rnSubSys, ok := renamedSubsys[subSys]
				if !ok {

func TestSubSysLambdaTargets(ctx context.Context, cfg config.Config, subSys string, transport *http.Transport) error {
	if err := checkValidLambdaKeysForSubSys(subSys, cfg[subSys]); err != nil {
		return err
	}

	targetList, err := fetchSubSysTargets(ctx, cfg, subSys, transport)
	if err != nil {
		return err
	}

	for _, target := range targetList {
		defer target.Close()
	}

		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminConfigInvalidIDPType), r.URL)
		return
	}

	var subSys string
	switch idpCfgType {
	case madmin.OpenidIDPCfg:
		subSys = madmin.IdentityOpenIDSubSys
	case madmin.LDAPIDPCfg:
		subSys = madmin.IdentityLDAPSubSys
	}

	cfgName := mux.Vars(r)["name"]
	cfgTarget := madmin.Default
	if cfgName != "" {
		cfgTarget = cfgName

		// and can lead to security holes there. It is valid JSON to
		// escape them, so we do so unconditionally.
		// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
		if c == '\u2028' || c == '\u2029' {
			if start < i {
				dst.WriteString(s[start:i])
			}
			dst.WriteString(`\u202`)
			dst.WriteByte(hexTable[c&0xF])
			i += size
			start = i

func TestSubSysNotificationTargets(ctx context.Context, cfg config.Config, subSys string, transport *http.Transport) error {
	if err := checkValidNotificationKeysForSubSys(subSys, cfg[subSys]); err != nil {
		return err
	}

	targetList, err := fetchSubSysTargets(ctx, cfg, subSys, transport)
	if err != nil {
		return err
	}

	for _, target := range targetList {
		defer target.Close()
	}

func (sys *NotificationSys) SignalConfigReload(subSys string) []NotificationPeerErr {
	ng := WithNPeers(len(sys.peerClients))
	for idx, client := range sys.peerClients {
		if client == nil {
			continue
		}
		client := client
		ng.Go(GlobalContext, func() error {
			return client.SignalService(serviceReloadDynamic, subSys, false)
		}, idx, *client.host)
	}
	return ng.Wait()
}

// --------------------------
// This implementation of the GET operation returns some or all (up to 1000)
// of the objects in a bucket. You can use the request parameters as selection
// criteria to return a subset of the objects in a bucket.
//
// NOTE: It is recommended that this API to be used for application development.
// MinIO continues to support ListObjectsV1 and V2 for supporting legacy tools.

		t.Fatalf("unexpected error: %v", err)
	}
	if err := ps.Subscribe(MaskAll, ch2, doneCh, nil); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	ps.Lock()
	defer ps.Unlock()

	if len(ps.subs) != 2 || ps.NumSubscribers(MaskAll) != 2 || ps.Subscribers() != 2 {
		t.Fatalf("expected 2 subscribers")
	}
}

func TestNumSubscribersMask(t *testing.T) {
	ps := New[Maskable, Mask](2)
	ch1 := make(chan Maskable, 1)

			if wg != nil {
				wg.Done()
			}
			// Clean up and de-register the subscriber
			ps.Lock()
			defer ps.Unlock()
			var remainTypes Mask
			for i, s := range ps.subs {
				if s == sub {
					ps.subs = append(ps.subs[:i], ps.subs[i+1:]...)
				} else {
					remainTypes.Merge(s.types)
				}
			}
			atomic.StoreUint64(&ps.types, uint64(remainTypes))
			atomic.AddInt32(&ps.numSubscribers, -1)
		}()