mirror of
https://github.com/ceph/ceph-csi.git
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142 lines
3.6 KiB
Go
142 lines
3.6 KiB
Go
/*
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Copyright 2023 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package service
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import (
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"context"
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"net"
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"time"
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"google.golang.org/grpc"
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"k8s.io/klog/v2"
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kmsapi "k8s.io/kms/apis/v2"
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)
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// GRPCService is a grpc server that runs the kms v2 alpha1 API.
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type GRPCService struct {
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addr string
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timeout time.Duration
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server *grpc.Server
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kmsService Service
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}
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var _ kmsapi.KeyManagementServiceServer = (*GRPCService)(nil)
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// NewGRPCService creates an instance of GRPCService.
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func NewGRPCService(
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address string,
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timeout time.Duration,
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kmsService Service,
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) *GRPCService {
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klog.V(4).InfoS("KMS plugin configured", "address", address, "timeout", timeout)
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return &GRPCService{
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addr: address,
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timeout: timeout,
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kmsService: kmsService,
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}
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}
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// ListenAndServe accepts incoming connections on a Unix socket. It is a blocking method.
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// Returns non-nil error unless Close or Shutdown is called.
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func (s *GRPCService) ListenAndServe() error {
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ln, err := net.Listen("unix", s.addr)
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if err != nil {
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return err
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}
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defer ln.Close()
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gs := grpc.NewServer(
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grpc.ConnectionTimeout(s.timeout),
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)
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s.server = gs
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kmsapi.RegisterKeyManagementServiceServer(gs, s)
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klog.V(4).InfoS("kms plugin serving", "address", s.addr)
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return gs.Serve(ln)
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}
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// Shutdown performs a graceful shutdown. Doesn't accept new connections and
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// blocks until all pending RPCs are finished.
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func (s *GRPCService) Shutdown() {
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klog.V(4).InfoS("kms plugin shutdown", "address", s.addr)
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if s.server != nil {
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s.server.GracefulStop()
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}
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}
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// Close stops the server by closing all connections immediately and cancels
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// all active RPCs.
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func (s *GRPCService) Close() {
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klog.V(4).InfoS("kms plugin close", "address", s.addr)
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if s.server != nil {
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s.server.Stop()
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}
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}
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// Status sends a status request to specified kms service.
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func (s *GRPCService) Status(ctx context.Context, _ *kmsapi.StatusRequest) (*kmsapi.StatusResponse, error) {
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res, err := s.kmsService.Status(ctx)
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if err != nil {
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return nil, err
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}
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return &kmsapi.StatusResponse{
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Version: res.Version,
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Healthz: res.Healthz,
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KeyId: res.KeyID,
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}, nil
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}
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// Decrypt sends a decryption request to specified kms service.
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func (s *GRPCService) Decrypt(ctx context.Context, req *kmsapi.DecryptRequest) (*kmsapi.DecryptResponse, error) {
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klog.V(4).InfoS("decrypt request received", "id", req.Uid)
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plaintext, err := s.kmsService.Decrypt(ctx, req.Uid, &DecryptRequest{
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Ciphertext: req.Ciphertext,
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KeyID: req.KeyId,
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Annotations: req.Annotations,
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})
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if err != nil {
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return nil, err
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}
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return &kmsapi.DecryptResponse{
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Plaintext: plaintext,
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}, nil
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}
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// Encrypt sends an encryption request to specified kms service.
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func (s *GRPCService) Encrypt(ctx context.Context, req *kmsapi.EncryptRequest) (*kmsapi.EncryptResponse, error) {
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klog.V(4).InfoS("encrypt request received", "id", req.Uid)
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encRes, err := s.kmsService.Encrypt(ctx, req.Uid, req.Plaintext)
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if err != nil {
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return nil, err
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}
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return &kmsapi.EncryptResponse{
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Ciphertext: encRes.Ciphertext,
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KeyId: encRes.KeyID,
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Annotations: encRes.Annotations,
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}, nil
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}
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