[#340] Move notification controller to layer

Signed-off-by: Angira Kekteeva <kira@nspcc.ru>

api/layer/layer.go

@@ -15,6 +15,7 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
 	"github.com/nspcc-dev/neofs-s3-gw/api/data"
 	"github.com/nspcc-dev/neofs-s3-gw/api/errors"
+	"github.com/nspcc-dev/neofs-s3-gw/api/notifications"
 	"github.com/nspcc-dev/neofs-s3-gw/api/resolver"
 	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
 	"github.com/nspcc-dev/neofs-sdk-go/client"
@@ -34,6 +35,7 @@ type (
 		log         *zap.Logger
 		anonKey     AnonymousKey
 		resolver    *resolver.BucketResolver
+		ncontroller *notifications.Controller
 		listsCache  *cache.ObjectsListCache
 		objCache    *cache.ObjectsCache
 		namesCache  *cache.ObjectsNameCache
@@ -42,10 +44,11 @@ type (
 	}
 
 	Config struct {
-		ChainAddress string
-		Caches       *CachesConfig
-		AnonKey      AnonymousKey
-		Resolver     *resolver.BucketResolver
+		ChainAddress           string
+		Caches                 *CachesConfig
+		AnonKey                AnonymousKey
+		Resolver               *resolver.BucketResolver
+		NotificationController *notifications.Controller
 	}
 
 	// AnonymousKey contains data for anonymous requests.
@@ -264,6 +267,7 @@ func NewLayer(log *zap.Logger, conns pool.Pool, config *Config) Client {
 		anonKey:     config.AnonKey,
 		resolver:    config.Resolver,
 		listsCache:  cache.NewObjectsListCache(config.Caches.ObjectsList),
+		ncontroller: config.NotificationController,
 		objCache:    cache.New(config.Caches.Objects),
 		namesCache:  cache.NewObjectsNameCache(config.Caches.Names),
 		bucketCache: cache.NewBucketCache(config.Caches.Buckets),
@@ -275,6 +279,10 @@ func (n *layer) EphemeralKey() *keys.PublicKey {
 	return n.anonKey.Key.PublicKey()
 }
 
+func (n *layer) IsNotificationEnabled() bool {
+	return n.ncontroller != nil
+}
+
 // IsAuthenticatedRequest check if access box exists in current request.
 func IsAuthenticatedRequest(ctx context.Context) bool {
 	_, ok := ctx.Value(api.BoxData).(*accessbox.Box)

cmd/s3-gw/app.go

@@ -36,7 +36,6 @@ type (
 		tls  *tlsConfig
 		obj  layer.Client
 		api  api.Handler
-		nc   *notifications.Controller
 
 		maxClients api.MaxClients
 
@@ -154,7 +153,8 @@ func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 		AnonKey: layer.AnonymousKey{
 			Key: randomKey,
 		},
-		Resolver: bucketResolver,
+		Resolver:               bucketResolver,
+		NotificationController: nc,
 	}
 
 	// prepare object layer
@@ -177,7 +177,6 @@ func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 		obj:  obj,
 		tls:  tls,
 		api:  caller,
-		nc:   nc,
 
 		webDone: make(chan struct{}, 1),
 		wrkDone: make(chan struct{}, 1),