package weed_server import ( "net" "strings" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/storage" "github.com/chrislusf/seaweedfs/weed/topology" "google.golang.org/grpc/peer" ) func (ms MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServer) error { var dn *topology.DataNode t := ms.Topo for { heartbeat, err := stream.Recv() if err == nil { if dn == nil { t.Sequence.SetMax(heartbeat.MaxFileKey) if heartbeat.Ip == "" { if pr, ok := peer.FromContext(stream.Context()); ok { if pr.Addr != net.Addr(nil) { heartbeat.Ip = pr.Addr.String()[0:strings.LastIndex(pr.Addr.String(), ":")] glog.V(0).Infof("remote IP address is detected as %v", heartbeat.Ip) } } } dcName, rackName := t.Configuration.Locate(heartbeat.Ip, heartbeat.DataCenter, heartbeat.Rack) dc := t.GetOrCreateDataCenter(dcName) rack := dc.GetOrCreateRack(rackName) dn = rack.GetOrCreateDataNode(heartbeat.Ip, int(heartbeat.Port), heartbeat.PublicUrl, int(heartbeat.MaxVolumeCount)) glog.V(0).Infof("added volume server %v:%d", heartbeat.GetIp(), heartbeat.GetPort()) if err := stream.Send(&master_pb.HeartbeatResponse{ VolumeSizeLimit: uint64(ms.volumeSizeLimitMB) * 1024 * 1024, SecretKey: string(ms.guard.SecretKey), }); err != nil { return err } } var volumeInfos []storage.VolumeInfo for _, v := range heartbeat.Volumes { if vi, err := storage.NewVolumeInfo(v); err == nil { volumeInfos = append(volumeInfos, vi) } else { glog.V(0).Infof("Fail to convert joined volume information: %v", err) } } deletedVolumes := dn.UpdateVolumes(volumeInfos) for _, v := range volumeInfos { t.RegisterVolumeLayout(v, dn) } for _, v := range deletedVolumes { t.UnRegisterVolumeLayout(v, dn) } } else { if dn != nil { glog.V(0).Infof("lost volume server %s:%d", dn.Ip, dn.Port) t.UnRegisterDataNode(dn) } return err } // tell the volume servers about the leader newLeader, err := t.Leader() if err == nil { if err := stream.Send(&master_pb.HeartbeatResponse{ Leader: newLeader, }); err != nil { return err } } } }