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117 lines
3.1 KiB
117 lines
3.1 KiB
package weed_server
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import (
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"fmt"
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"time"
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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/security"
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"github.com/chrislusf/seaweedfs/weed/util"
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"golang.org/x/net/context"
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)
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func (vs *VolumeServer) GetMaster() string {
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return vs.currentMaster
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}
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func (vs *VolumeServer) heartbeat() {
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glog.V(0).Infof("Volume server start with masters: %v", vs.MasterNodes)
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vs.store.SetDataCenter(vs.dataCenter)
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vs.store.SetRack(vs.rack)
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var err error
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var newLeader string
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for {
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for _, master := range vs.MasterNodes {
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if newLeader != "" {
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master = newLeader
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}
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newLeader, err = vs.doHeartbeat(master, time.Duration(vs.pulseSeconds)*time.Second)
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if err != nil {
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glog.V(0).Infof("heartbeat error: %v", err)
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time.Sleep(time.Duration(vs.pulseSeconds) * time.Second)
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}
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}
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}
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}
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func (vs *VolumeServer) doHeartbeat(masterNode string, sleepInterval time.Duration) (newLeader string, err error) {
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grpcConection, err := util.GrpcDial(masterNode)
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if err != nil {
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return "", fmt.Errorf("fail to dial: %v", err)
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}
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defer grpcConection.Close()
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client := master_pb.NewSeaweedClient(grpcConection)
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stream, err := client.SendHeartbeat(context.Background())
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if err != nil {
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glog.V(0).Infof("SendHeartbeat to %s: %v", masterNode, err)
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return "", err
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}
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glog.V(0).Infof("Heartbeat to: %v", masterNode)
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vs.currentMaster = masterNode
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vs.store.Client = stream
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defer func() { vs.store.Client = nil }()
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doneChan := make(chan error, 1)
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go func() {
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for {
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in, err := stream.Recv()
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if err != nil {
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doneChan <- err
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return
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}
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if in.GetVolumeSizeLimit() != 0 {
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vs.store.VolumeSizeLimit = in.GetVolumeSizeLimit()
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}
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if in.GetSecretKey() != "" {
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vs.guard.SecretKey = security.Secret(in.GetSecretKey())
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}
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if in.GetLeader() != "" && masterNode != in.GetLeader() {
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glog.V(0).Infof("Volume Server found a new master newLeader: %v instead of %v", in.GetLeader(), masterNode)
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newLeader = in.GetLeader()
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doneChan <- nil
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return
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}
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}
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}()
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if err = stream.Send(vs.store.CollectHeartbeat()); err != nil {
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glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterNode, err)
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return "", err
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}
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tickChan := time.Tick(sleepInterval)
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for {
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select {
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case vid := <-vs.store.NewVolumeIdChan:
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deltaBeat := &master_pb.Heartbeat{
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NewVids: []uint32{uint32(vid)},
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}
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if err = stream.Send(deltaBeat); err != nil {
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glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterNode, err)
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return "", err
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}
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case vid := <-vs.store.DeletedVolumeIdChan:
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deltaBeat := &master_pb.Heartbeat{
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DeletedVids: []uint32{uint32(vid)},
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}
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if err = stream.Send(deltaBeat); err != nil {
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glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterNode, err)
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return "", err
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}
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case <-tickChan:
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if err = stream.Send(vs.store.CollectHeartbeat()); err != nil {
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glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterNode, err)
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return "", err
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}
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case <-doneChan:
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return
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}
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}
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}
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