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246 lines
6.7 KiB
246 lines
6.7 KiB
package weed_server
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import (
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"fmt"
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"net"
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"strings"
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"time"
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"github.com/chrislusf/raft"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/topology"
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"google.golang.org/grpc/peer"
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)
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func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServer) error {
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var dn *topology.DataNode
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t := ms.Topo
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defer func() {
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if dn != nil {
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glog.V(0).Infof("unregister disconnected volume server %s:%d", dn.Ip, dn.Port)
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t.UnRegisterDataNode(dn)
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message := &master_pb.VolumeLocation{
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Url: dn.Url(),
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PublicUrl: dn.PublicUrl,
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}
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for _, v := range dn.GetVolumes() {
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message.DeletedVids = append(message.DeletedVids, uint32(v.Id))
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}
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for _, s := range dn.GetEcShards() {
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message.DeletedVids = append(message.DeletedVids, uint32(s.VolumeId))
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}
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if len(message.DeletedVids) > 0 {
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ms.clientChansLock.RLock()
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for _, ch := range ms.clientChans {
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ch <- message
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}
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ms.clientChansLock.RUnlock()
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}
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}
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}()
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for {
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heartbeat, err := stream.Recv()
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if err != nil {
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return err
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}
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if dn == nil {
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t.Sequence.SetMax(heartbeat.MaxFileKey)
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if heartbeat.Ip == "" {
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if pr, ok := peer.FromContext(stream.Context()); ok {
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if pr.Addr != net.Addr(nil) {
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heartbeat.Ip = pr.Addr.String()[0:strings.LastIndex(pr.Addr.String(), ":")]
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glog.V(0).Infof("remote IP address is detected as %v", heartbeat.Ip)
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}
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}
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}
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dcName, rackName := t.Configuration.Locate(heartbeat.Ip, heartbeat.DataCenter, heartbeat.Rack)
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dc := t.GetOrCreateDataCenter(dcName)
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rack := dc.GetOrCreateRack(rackName)
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dn = rack.GetOrCreateDataNode(heartbeat.Ip,
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int(heartbeat.Port), heartbeat.PublicUrl,
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int64(heartbeat.MaxVolumeCount))
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glog.V(0).Infof("added volume server %v:%d", heartbeat.GetIp(), heartbeat.GetPort())
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if err := stream.Send(&master_pb.HeartbeatResponse{
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VolumeSizeLimit: uint64(ms.option.VolumeSizeLimitMB) * 1024 * 1024,
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}); err != nil {
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return err
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}
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}
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glog.V(4).Infof("master received heartbeat %s", heartbeat.String())
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message := &master_pb.VolumeLocation{
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Url: dn.Url(),
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PublicUrl: dn.PublicUrl,
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}
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if len(heartbeat.NewVolumes) > 0 || len(heartbeat.DeletedVolumes) > 0 {
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// process delta volume ids if exists for fast volume id updates
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for _, volInfo := range heartbeat.NewVolumes {
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message.NewVids = append(message.NewVids, volInfo.Id)
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}
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for _, volInfo := range heartbeat.DeletedVolumes {
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message.DeletedVids = append(message.DeletedVids, volInfo.Id)
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}
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// update master internal volume layouts
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t.IncrementalSyncDataNodeRegistration(heartbeat.NewVolumes, heartbeat.DeletedVolumes, dn)
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}
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if len(heartbeat.Volumes) > 0 || heartbeat.HasNoVolumes {
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// process heartbeat.Volumes
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newVolumes, deletedVolumes := t.SyncDataNodeRegistration(heartbeat.Volumes, dn)
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for _, v := range newVolumes {
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glog.V(0).Infof("master see new volume %d from %s", uint32(v.Id), dn.Url())
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message.NewVids = append(message.NewVids, uint32(v.Id))
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}
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for _, v := range deletedVolumes {
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glog.V(0).Infof("master see deleted volume %d from %s", uint32(v.Id), dn.Url())
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message.DeletedVids = append(message.DeletedVids, uint32(v.Id))
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}
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}
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if len(heartbeat.NewEcShards) > 0 || len(heartbeat.DeletedEcShards) > 0 {
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// update master internal volume layouts
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t.IncrementalSyncDataNodeEcShards(heartbeat.NewEcShards, heartbeat.DeletedEcShards, dn)
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for _, s := range heartbeat.NewEcShards {
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message.NewVids = append(message.NewVids, s.Id)
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}
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for _, s := range heartbeat.DeletedEcShards {
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if dn.HasVolumesById(needle.VolumeId(s.Id)) {
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continue
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}
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message.DeletedVids = append(message.DeletedVids, s.Id)
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}
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}
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if len(heartbeat.EcShards) > 0 || heartbeat.HasNoEcShards {
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glog.V(1).Infof("master recieved ec shards from %s: %+v", dn.Url(), heartbeat.EcShards)
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newShards, deletedShards := t.SyncDataNodeEcShards(heartbeat.EcShards, dn)
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// broadcast the ec vid changes to master clients
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for _, s := range newShards {
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message.NewVids = append(message.NewVids, uint32(s.VolumeId))
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}
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for _, s := range deletedShards {
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if dn.HasVolumesById(s.VolumeId) {
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continue
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}
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message.DeletedVids = append(message.DeletedVids, uint32(s.VolumeId))
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}
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}
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if len(message.NewVids) > 0 || len(message.DeletedVids) > 0 {
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ms.clientChansLock.RLock()
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for host, ch := range ms.clientChans {
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glog.V(0).Infof("master send to %s: %s", host, message.String())
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ch <- message
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}
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ms.clientChansLock.RUnlock()
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}
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// tell the volume servers about the leader
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newLeader, err := t.Leader()
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if err != nil {
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return err
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}
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if err := stream.Send(&master_pb.HeartbeatResponse{
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Leader: newLeader,
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MetricsAddress: ms.option.MetricsAddress,
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MetricsIntervalSeconds: uint32(ms.option.MetricsIntervalSec),
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}); err != nil {
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return err
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}
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}
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}
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// KeepConnected keep a stream gRPC call to the master. Used by clients to know the master is up.
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// And clients gets the up-to-date list of volume locations
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func (ms *MasterServer) KeepConnected(stream master_pb.Seaweed_KeepConnectedServer) error {
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req, err := stream.Recv()
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if err != nil {
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return err
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}
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if !ms.Topo.IsLeader() {
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return raft.NotLeaderError
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}
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// remember client address
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ctx := stream.Context()
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// fmt.Printf("FromContext %+v\n", ctx)
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pr, ok := peer.FromContext(ctx)
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if !ok {
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glog.Error("failed to get peer from ctx")
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return fmt.Errorf("failed to get peer from ctx")
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}
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if pr.Addr == net.Addr(nil) {
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glog.Error("failed to get peer address")
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return fmt.Errorf("failed to get peer address")
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}
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clientName := req.Name + pr.Addr.String()
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glog.V(0).Infof("+ client %v", clientName)
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messageChan := make(chan *master_pb.VolumeLocation)
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stopChan := make(chan bool)
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ms.clientChansLock.Lock()
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ms.clientChans[clientName] = messageChan
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ms.clientChansLock.Unlock()
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defer func() {
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glog.V(0).Infof("- client %v", clientName)
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ms.clientChansLock.Lock()
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delete(ms.clientChans, clientName)
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ms.clientChansLock.Unlock()
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}()
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for _, message := range ms.Topo.ToVolumeLocations() {
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if err := stream.Send(message); err != nil {
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return err
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}
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}
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go func() {
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for {
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_, err := stream.Recv()
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if err != nil {
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glog.V(2).Infof("- client %v: %v", clientName, err)
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stopChan <- true
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break
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}
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}
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}()
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ticker := time.NewTicker(5 * time.Second)
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for {
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select {
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case message := <-messageChan:
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if err := stream.Send(message); err != nil {
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glog.V(0).Infof("=> client %v: %+v", clientName, message)
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return err
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}
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case <-ticker.C:
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if !ms.Topo.IsLeader() {
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return raft.NotLeaderError
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}
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case <-stopChan:
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return nil
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}
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}
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return nil
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}
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