Esempio n. 1
0
// Start starts the raft server.
// The function assumes that join has been accepted successfully.
func (s *PeerServer) Start(snapshot bool, discoverURL string, peers []string) error {
	s.Lock()
	defer s.Unlock()
	if s.started {
		return nil
	}
	s.started = true

	// LoadSnapshot
	if snapshot {
		err := s.raftServer.LoadSnapshot()

		if err == nil {
			log.Debugf("%s finished load snapshot", s.Config.Name)
		} else {
			log.Debug(err)
		}
	}

	s.raftServer.Init()

	// Set NOCOW for data directory in btrfs
	if btrfs.IsBtrfs(s.raftServer.LogPath()) {
		if err := btrfs.SetNOCOWFile(s.raftServer.LogPath()); err != nil {
			log.Warnf("Failed setting NOCOW: %v", err)
		}
	}

	s.findCluster(discoverURL, peers)

	s.stopNotify = make(chan bool)
	s.removeNotify = make(chan bool)
	s.closeChan = make(chan bool)

	s.startRoutine(s.monitorSync)
	s.startRoutine(s.monitorTimeoutThreshold)
	s.startRoutine(s.monitorActiveSize)
	s.startRoutine(s.monitorPeerActivity)

	// open the snapshot
	if snapshot {
		s.startRoutine(s.monitorSnapshot)
	}

	return nil
}
Esempio n. 2
0
func (s *PeerServer) SetRaftServer(raftServer raft.Server, snapshot bool) {
	s.snapConf = &snapshotConf{
		checkingInterval: time.Second * 3,
		// this is not accurate, we will update raft to provide an api
		lastIndex:   raftServer.CommitIndex(),
		snapshotThr: uint64(s.Config.SnapshotCount),
	}

	raftServer.AddEventListener(raft.StateChangeEventType, s.raftEventLogger)
	raftServer.AddEventListener(raft.LeaderChangeEventType, s.raftEventLogger)
	raftServer.AddEventListener(raft.TermChangeEventType, s.raftEventLogger)
	raftServer.AddEventListener(raft.AddPeerEventType, s.raftEventLogger)
	raftServer.AddEventListener(raft.RemovePeerEventType, s.raftEventLogger)
	raftServer.AddEventListener(raft.HeartbeatIntervalEventType, s.raftEventLogger)
	raftServer.AddEventListener(raft.ElectionTimeoutThresholdEventType, s.raftEventLogger)

	raftServer.AddEventListener(raft.HeartbeatEventType, s.recordMetricEvent)

	raftServer.AddEventListener(raft.RemovedEventType, s.removedEvent)

	s.raftServer = raftServer
	s.removedInLog = false

	// LoadSnapshot
	if snapshot {
		err := s.raftServer.LoadSnapshot()

		if err == nil {
			log.Debugf("%s finished load snapshot", s.Config.Name)
		} else {
			log.Debug(err)
		}
	}

	s.raftServer.Init()

	// Set NOCOW for data directory in btrfs
	if btrfs.IsBtrfs(s.raftServer.LogPath()) {
		if err := btrfs.SetNOCOWFile(s.raftServer.LogPath()); err != nil {
			log.Warnf("Failed setting NOCOW: %v", err)
		}
	}
}