Code change:
<ins> /* Copyright 2023 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package service import ( "context" "net" "time" "google.golang.org/grpc" "k8s.io/klog/v2" kmsapi "k8s.io/kms/apis/v2alpha1" ) // GRPCService is a gprc server that runs the kms v2 alpha 1 API. type GRPCService struct { addr    string timeout time.Duration server  *grpc.Server kmsService Service } var _ kmsapi.KeyManagementServiceServer = (*GRPCService)(nil) // NewGRPCService creates an instance of GRPCService. func NewGRPCService( address string, timeout time.Duration, kmsService Service, ) *GRPCService { klog.V(4).InfoS("KMS plugin configured", "address", address, "timeout", timeout) return &GRPCService{ addr:       address, timeout:    timeout, kmsService: kmsService, } } // ListenAndServe accepts incoming connections on a Unix socket. It is a blocking method. // Returns non-nil error unless Close or Shutdown is called. func (s *GRPCService) ListenAndServe() error { ln, err := net.Listen("unix", s.addr) if err != nil { return err } defer ln.Close() gs := grpc.NewServer( grpc.ConnectionTimeout(s.timeout), ) s.server = gs kmsapi.RegisterKeyManagementServiceServer(gs, s) klog.V(4).InfoS("kms plugin serving", "address", s.addr) return gs.Serve(ln) } // Shutdown performs a grafecul shutdown. Doesn't accept new connections and // blocks until all pending  RPCs are finished. func (s *GRPCService) Shutdown() { klog.V(4).InfoS("kms plugin shutdown", "address", s.addr) if s.server != nil { s.server.GracefulStop() } } // Close stops the server by closing all connections immediately and cancels // all active RPCs. func (s *GRPCService) Close() { klog.V(4).InfoS("kms plugin close", "address", s.addr) if s.server != nil { s.server.Stop() } } // Status sends a status request to specified kms service. func (s *GRPCService) Status(ctx context.Context, _ *kmsapi.StatusRequest) (*kmsapi.StatusResponse, error) { res, err := s.kmsService.Status(ctx) if err != nil { return nil, err } return &kmsapi.StatusResponse{ Version: res.Version, Healthz: res.Healthz, KeyId:   res.KeyID, }, nil } // Decrypt sends a decryption request to specified kms service. func (s *GRPCService) Decrypt(ctx context.Context, req *kmsapi.DecryptRequest) (*kmsapi.DecryptResponse, error) { klog.V(4).InfoS("decrypt request received", "id", req.Uid) plaintext, err := s.kmsService.Decrypt(ctx, req.Uid, &DecryptRequest{ Ciphertext:  req.Ciphertext, KeyID:       req.KeyId, Annotations: req.Annotations, }) if err != nil { return nil, err } return &kmsapi.DecryptResponse{ Plaintext: plaintext, }, nil } // Encrypt sends an encryption request to specified kms service. func (s *GRPCService) Encrypt(ctx context.Context, req *kmsapi.EncryptRequest) (*kmsapi.EncryptResponse, error) { klog.V(4).InfoS("encrypt request received", "id", req.Uid) encRes, err := s.kmsService.Encrypt(ctx, req.Uid, req.Plaintext) if err != nil { return nil, err } return &kmsapi.EncryptResponse{ Ciphertext:  encRes.Ciphertext, KeyId:       encRes.KeyID, Annotations: encRes.Annotations, }, nil } </ins>

Related discussion:
text: I would implement that in terms of the interface so that it can be used both in testing (via a local key) and in real code (by delegating to a HSM).
Hi bug-triage team member for 1.27 here. This issue is still open but has had no recent activity, and no active PRs. Is everything on track for the Code Freeze in March 14th? Thank you!
/milestone clear
Could be closed, right? :)
We still need metrics and tracing support for the reference implementation (though it is all a lot less important now).
/retitle [KMSv2] Add metrics and tracing in for plugins
This is duplicate of /close
Closing this issue. <detailsIn response to : This is duplicate of Instructions for interacting with me using PR comments are available . If you have questions or suggestions related to my behavior, please file an issue against the repository. </details