go.etcd.io/etcd@v3.3.27+incompatible/proxy/grpcproxy/adapter/election_client_adapter.go (about) 1 // Copyright 2017 The etcd Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package adapter 16 17 import ( 18 "context" 19 20 "github.com/coreos/etcd/etcdserver/api/v3election/v3electionpb" 21 22 "google.golang.org/grpc" 23 ) 24 25 type es2ec struct{ es v3electionpb.ElectionServer } 26 27 func ElectionServerToElectionClient(es v3electionpb.ElectionServer) v3electionpb.ElectionClient { 28 return &es2ec{es} 29 } 30 31 func (s *es2ec) Campaign(ctx context.Context, r *v3electionpb.CampaignRequest, opts ...grpc.CallOption) (*v3electionpb.CampaignResponse, error) { 32 return s.es.Campaign(ctx, r) 33 } 34 35 func (s *es2ec) Proclaim(ctx context.Context, r *v3electionpb.ProclaimRequest, opts ...grpc.CallOption) (*v3electionpb.ProclaimResponse, error) { 36 return s.es.Proclaim(ctx, r) 37 } 38 39 func (s *es2ec) Leader(ctx context.Context, r *v3electionpb.LeaderRequest, opts ...grpc.CallOption) (*v3electionpb.LeaderResponse, error) { 40 return s.es.Leader(ctx, r) 41 } 42 43 func (s *es2ec) Resign(ctx context.Context, r *v3electionpb.ResignRequest, opts ...grpc.CallOption) (*v3electionpb.ResignResponse, error) { 44 return s.es.Resign(ctx, r) 45 } 46 47 func (s *es2ec) Observe(ctx context.Context, in *v3electionpb.LeaderRequest, opts ...grpc.CallOption) (v3electionpb.Election_ObserveClient, error) { 48 cs := newPipeStream(ctx, func(ss chanServerStream) error { 49 return s.es.Observe(in, &es2ecServerStream{ss}) 50 }) 51 return &es2ecClientStream{cs}, nil 52 } 53 54 // es2ecClientStream implements Election_ObserveClient 55 type es2ecClientStream struct{ chanClientStream } 56 57 // es2ecServerStream implements Election_ObserveServer 58 type es2ecServerStream struct{ chanServerStream } 59 60 func (s *es2ecClientStream) Send(rr *v3electionpb.LeaderRequest) error { 61 return s.SendMsg(rr) 62 } 63 func (s *es2ecClientStream) Recv() (*v3electionpb.LeaderResponse, error) { 64 var v interface{} 65 if err := s.RecvMsg(&v); err != nil { 66 return nil, err 67 } 68 return v.(*v3electionpb.LeaderResponse), nil 69 } 70 71 func (s *es2ecServerStream) Send(rr *v3electionpb.LeaderResponse) error { 72 return s.SendMsg(rr) 73 } 74 func (s *es2ecServerStream) Recv() (*v3electionpb.LeaderRequest, error) { 75 var v interface{} 76 if err := s.RecvMsg(&v); err != nil { 77 return nil, err 78 } 79 return v.(*v3electionpb.LeaderRequest), nil 80 }