go.etcd.io/etcd@v3.3.27+incompatible/rafthttp/remote.go (about) 1 // Copyright 2015 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 rafthttp 16 17 import ( 18 "github.com/coreos/etcd/pkg/types" 19 "github.com/coreos/etcd/raft/raftpb" 20 ) 21 22 type remote struct { 23 id types.ID 24 status *peerStatus 25 pipeline *pipeline 26 } 27 28 func startRemote(tr *Transport, urls types.URLs, id types.ID) *remote { 29 picker := newURLPicker(urls) 30 status := newPeerStatus(id) 31 pipeline := &pipeline{ 32 peerID: id, 33 tr: tr, 34 picker: picker, 35 status: status, 36 raft: tr.Raft, 37 errorc: tr.ErrorC, 38 } 39 pipeline.start() 40 41 return &remote{ 42 id: id, 43 status: status, 44 pipeline: pipeline, 45 } 46 } 47 48 func (g *remote) send(m raftpb.Message) { 49 select { 50 case g.pipeline.msgc <- m: 51 default: 52 if g.status.isActive() { 53 plog.MergeWarningf("dropped internal raft message to %s since sending buffer is full (bad/overloaded network)", g.id) 54 } 55 plog.Debugf("dropped %s to %s since sending buffer is full", m.Type, g.id) 56 sentFailures.WithLabelValues(types.ID(m.To).String()).Inc() 57 } 58 } 59 60 func (g *remote) stop() { 61 g.pipeline.stop() 62 } 63 64 func (g *remote) Pause() { 65 g.stop() 66 } 67 68 func (g *remote) Resume() { 69 g.pipeline.start() 70 }