go.etcd.io/etcd@v3.3.27+incompatible/proxy/grpcproxy/maintenance.go (about) 1 // Copyright 2016 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 grpcproxy 16 17 import ( 18 "context" 19 "io" 20 21 "github.com/coreos/etcd/clientv3" 22 pb "github.com/coreos/etcd/etcdserver/etcdserverpb" 23 ) 24 25 type maintenanceProxy struct { 26 client *clientv3.Client 27 } 28 29 func NewMaintenanceProxy(c *clientv3.Client) pb.MaintenanceServer { 30 return &maintenanceProxy{ 31 client: c, 32 } 33 } 34 35 func (mp *maintenanceProxy) Defragment(ctx context.Context, dr *pb.DefragmentRequest) (*pb.DefragmentResponse, error) { 36 conn := mp.client.ActiveConnection() 37 return pb.NewMaintenanceClient(conn).Defragment(ctx, dr) 38 } 39 40 func (mp *maintenanceProxy) Snapshot(sr *pb.SnapshotRequest, stream pb.Maintenance_SnapshotServer) error { 41 conn := mp.client.ActiveConnection() 42 ctx, cancel := context.WithCancel(stream.Context()) 43 defer cancel() 44 45 ctx = withClientAuthToken(ctx, stream.Context()) 46 47 sc, err := pb.NewMaintenanceClient(conn).Snapshot(ctx, sr) 48 if err != nil { 49 return err 50 } 51 52 for { 53 rr, err := sc.Recv() 54 if err != nil { 55 if err == io.EOF { 56 return nil 57 } 58 return err 59 } 60 err = stream.Send(rr) 61 if err != nil { 62 return err 63 } 64 } 65 } 66 67 func (mp *maintenanceProxy) Hash(ctx context.Context, r *pb.HashRequest) (*pb.HashResponse, error) { 68 conn := mp.client.ActiveConnection() 69 return pb.NewMaintenanceClient(conn).Hash(ctx, r) 70 } 71 72 func (mp *maintenanceProxy) HashKV(ctx context.Context, r *pb.HashKVRequest) (*pb.HashKVResponse, error) { 73 conn := mp.client.ActiveConnection() 74 return pb.NewMaintenanceClient(conn).HashKV(ctx, r) 75 } 76 77 func (mp *maintenanceProxy) Alarm(ctx context.Context, r *pb.AlarmRequest) (*pb.AlarmResponse, error) { 78 conn := mp.client.ActiveConnection() 79 return pb.NewMaintenanceClient(conn).Alarm(ctx, r) 80 } 81 82 func (mp *maintenanceProxy) Status(ctx context.Context, r *pb.StatusRequest) (*pb.StatusResponse, error) { 83 conn := mp.client.ActiveConnection() 84 return pb.NewMaintenanceClient(conn).Status(ctx, r) 85 } 86 87 func (mp *maintenanceProxy) MoveLeader(ctx context.Context, r *pb.MoveLeaderRequest) (*pb.MoveLeaderResponse, error) { 88 conn := mp.client.ActiveConnection() 89 return pb.NewMaintenanceClient(conn).MoveLeader(ctx, r) 90 }