Merge pull request #439 from glazychev-art/add_metadata

Add metadata chain element

pkg/registry/chains/registryk8s/registry-k8s.go

@@ -1,6 +1,6 @@
 // Copyright (c) 2020-2022 Doc.ai and/or its affiliates.
 //
-// Copyright (c) 2022 Cisco and/or its affiliates.
+// Copyright (c) 2022-2023 Cisco and/or its affiliates.
 //
 // SPDX-License-Identifier: Apache-2.0
 //
@@ -39,6 +39,7 @@ import (
 	"github.com/networkservicemesh/sdk/pkg/registry/common/updatepath"
 	"github.com/networkservicemesh/sdk/pkg/registry/core/chain"
 	"github.com/networkservicemesh/sdk/pkg/registry/switchcase"
+	"github.com/networkservicemesh/sdk/pkg/registry/utils/metadata"
 	"github.com/networkservicemesh/sdk/pkg/tools/interdomain"
 	"github.com/networkservicemesh/sdk/pkg/tools/token"
 
@@ -132,6 +133,7 @@ func NewServer(config *Config, tokenGenerator token.GeneratorFunc, options ...Op
 		updatepath.NewNetworkServiceEndpointRegistryServer(tokenGenerator),
 		opts.authorizeNSERegistryServer,
 		begin.NewNetworkServiceEndpointRegistryServer(),
+		metadata.NewNetworkServiceEndpointServer(),
 		switchcase.NewNetworkServiceEndpointRegistryServer(switchcase.NSEServerCase{
 			Condition: func(c context.Context, nse *registry.NetworkServiceEndpoint) bool {
 				if interdomain.Is(nse.GetName()) {
@@ -174,6 +176,7 @@ func NewServer(config *Config, tokenGenerator token.GeneratorFunc, options ...Op
 		grpcmetadata.NewNetworkServiceRegistryServer(),
 		updatepath.NewNetworkServiceRegistryServer(tokenGenerator),
 		opts.authorizeNSRegistryServer,
+		metadata.NewNetworkServiceServer(),
 		setpayload.NewNetworkServiceRegistryServer(),
 		switchcase.NewNetworkServiceRegistryServer(
 			switchcase.NSServerCase{