go.etcd.io/etcd@v3.3.27+incompatible/rafthttp/peer_status.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 "fmt" 19 "sync" 20 "time" 21 22 "github.com/coreos/etcd/pkg/types" 23 ) 24 25 type failureType struct { 26 source string 27 action string 28 } 29 30 type peerStatus struct { 31 id types.ID 32 mu sync.Mutex // protect variables below 33 active bool 34 since time.Time 35 } 36 37 func newPeerStatus(id types.ID) *peerStatus { 38 return &peerStatus{ 39 id: id, 40 } 41 } 42 43 func (s *peerStatus) activate() { 44 s.mu.Lock() 45 defer s.mu.Unlock() 46 if !s.active { 47 plog.Infof("peer %s became active", s.id) 48 s.active = true 49 s.since = time.Now() 50 } 51 } 52 53 func (s *peerStatus) deactivate(failure failureType, reason string) { 54 s.mu.Lock() 55 defer s.mu.Unlock() 56 msg := fmt.Sprintf("failed to %s %s on %s (%s)", failure.action, s.id, failure.source, reason) 57 if s.active { 58 plog.Errorf(msg) 59 plog.Infof("peer %s became inactive (message send to peer failed)", s.id) 60 s.active = false 61 s.since = time.Time{} 62 return 63 } 64 plog.Debugf(msg) 65 } 66 67 func (s *peerStatus) isActive() bool { 68 s.mu.Lock() 69 defer s.mu.Unlock() 70 return s.active 71 } 72 73 func (s *peerStatus) activeSince() time.Time { 74 s.mu.Lock() 75 defer s.mu.Unlock() 76 return s.since 77 }