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247 lines
8.1 KiB
247 lines
8.1 KiB
package weed_server
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import (
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"fmt"
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"os"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/operation"
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"google.golang.org/grpc"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/security"
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"github.com/seaweedfs/seaweedfs/weed/storage/backend"
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"github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding"
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"golang.org/x/net/context"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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func (vs *VolumeServer) GetMaster() pb.ServerAddress {
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return vs.currentMaster
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}
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func (vs *VolumeServer) checkWithMaster() (err error) {
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for {
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for _, master := range vs.SeedMasterNodes {
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err = operation.WithMasterServerClient(false, master, vs.grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
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resp, err := masterClient.GetMasterConfiguration(context.Background(), &master_pb.GetMasterConfigurationRequest{})
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if err != nil {
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return fmt.Errorf("get master %s configuration: %v", master, err)
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}
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vs.metricsAddress, vs.metricsIntervalSec = resp.MetricsAddress, int(resp.MetricsIntervalSeconds)
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backend.LoadFromPbStorageBackends(resp.StorageBackends)
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return nil
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})
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if err == nil {
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return
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} else {
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glog.V(0).Infof("checkWithMaster %s: %v", master, err)
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}
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}
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time.Sleep(1790 * time.Millisecond)
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}
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}
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func (vs *VolumeServer) heartbeat() {
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glog.V(0).Infof("Volume server start with seed master nodes: %v", vs.SeedMasterNodes)
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vs.store.SetDataCenter(vs.dataCenter)
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vs.store.SetRack(vs.rack)
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grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.volume")
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var err error
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var newLeader pb.ServerAddress
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for vs.isHeartbeating {
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for _, master := range vs.SeedMasterNodes {
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if newLeader != "" {
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// the new leader may actually is the same master
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// need to wait a bit before adding itself
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time.Sleep(3 * time.Second)
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master = newLeader
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}
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vs.store.MasterAddress = master
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newLeader, err = vs.doHeartbeat(master, grpcDialOption, 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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newLeader = ""
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vs.store.MasterAddress = ""
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}
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if !vs.isHeartbeating {
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break
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}
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}
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}
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}
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func (vs *VolumeServer) StopHeartbeat() (isAlreadyStopping bool) {
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if !vs.isHeartbeating {
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return true
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}
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vs.isHeartbeating = false
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close(vs.stopChan)
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return false
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}
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func (vs *VolumeServer) doHeartbeat(masterAddress pb.ServerAddress, grpcDialOption grpc.DialOption, sleepInterval time.Duration) (newLeader pb.ServerAddress, err error) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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grpcConection, err := pb.GrpcDial(ctx, masterAddress.ToGrpcAddress(), grpcDialOption)
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if err != nil {
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return "", fmt.Errorf("fail to dial %s : %v", masterAddress, 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(ctx)
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if err != nil {
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glog.V(0).Infof("SendHeartbeat to %s: %v", masterAddress, err)
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return "", err
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}
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glog.V(0).Infof("Heartbeat to: %v", masterAddress)
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vs.currentMaster = masterAddress
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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 len(in.DuplicatedUuids) > 0 {
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var duplicateDir []string
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for _, loc := range vs.store.Locations {
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for _, uuid := range in.DuplicatedUuids {
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if uuid == loc.DirectoryUuid {
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duplicateDir = append(duplicateDir, loc.Directory)
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}
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}
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}
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glog.Errorf("Shut down Volume Server due to duplicate volume directories: %v", duplicateDir)
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os.Exit(1)
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}
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if in.GetVolumeSizeLimit() != 0 && vs.store.GetVolumeSizeLimit() != in.GetVolumeSizeLimit() {
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vs.store.SetVolumeSizeLimit(in.GetVolumeSizeLimit())
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if vs.store.MaybeAdjustVolumeMax() {
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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", vs.currentMaster, err)
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return
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}
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}
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}
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if in.GetLeader() != "" && string(vs.currentMaster) != in.GetLeader() {
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glog.V(0).Infof("Volume Server found a new master newLeader: %v instead of %v", in.GetLeader(), vs.currentMaster)
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newLeader = pb.ServerAddress(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", masterAddress, err)
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return "", err
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}
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if err = stream.Send(vs.store.CollectErasureCodingHeartbeat()); err != nil {
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glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterAddress, err)
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return "", err
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}
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volumeTickChan := time.Tick(sleepInterval)
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ecShardTickChan := time.Tick(17 * sleepInterval)
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for {
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select {
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case volumeMessage := <-vs.store.NewVolumesChan:
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deltaBeat := &master_pb.Heartbeat{
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NewVolumes: []*master_pb.VolumeShortInformationMessage{
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&volumeMessage,
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},
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}
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glog.V(0).Infof("volume server %s:%d adds volume %d", vs.store.Ip, vs.store.Port, volumeMessage.Id)
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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", masterAddress, err)
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return "", err
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}
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case ecShardMessage := <-vs.store.NewEcShardsChan:
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deltaBeat := &master_pb.Heartbeat{
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NewEcShards: []*master_pb.VolumeEcShardInformationMessage{
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&ecShardMessage,
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},
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}
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glog.V(0).Infof("volume server %s:%d adds ec shard %d:%d", vs.store.Ip, vs.store.Port, ecShardMessage.Id,
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erasure_coding.ShardBits(ecShardMessage.EcIndexBits).ShardIds())
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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", masterAddress, err)
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return "", err
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}
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case volumeMessage := <-vs.store.DeletedVolumesChan:
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deltaBeat := &master_pb.Heartbeat{
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DeletedVolumes: []*master_pb.VolumeShortInformationMessage{
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&volumeMessage,
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},
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}
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glog.V(0).Infof("volume server %s:%d deletes volume %d", vs.store.Ip, vs.store.Port, volumeMessage.Id)
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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", masterAddress, err)
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return "", err
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}
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case ecShardMessage := <-vs.store.DeletedEcShardsChan:
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deltaBeat := &master_pb.Heartbeat{
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DeletedEcShards: []*master_pb.VolumeEcShardInformationMessage{
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&ecShardMessage,
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},
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}
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glog.V(0).Infof("volume server %s:%d deletes ec shard %d:%d", vs.store.Ip, vs.store.Port, ecShardMessage.Id,
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erasure_coding.ShardBits(ecShardMessage.EcIndexBits).ShardIds())
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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", masterAddress, err)
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return "", err
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}
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case <-volumeTickChan:
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glog.V(4).Infof("volume server %s:%d heartbeat", vs.store.Ip, vs.store.Port)
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vs.store.MaybeAdjustVolumeMax()
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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", masterAddress, err)
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return "", err
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}
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case <-ecShardTickChan:
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glog.V(4).Infof("volume server %s:%d ec heartbeat", vs.store.Ip, vs.store.Port)
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if err = stream.Send(vs.store.CollectErasureCodingHeartbeat()); err != nil {
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glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterAddress, err)
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return "", err
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}
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case err = <-doneChan:
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return
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case <-vs.stopChan:
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var volumeMessages []*master_pb.VolumeInformationMessage
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emptyBeat := &master_pb.Heartbeat{
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Ip: vs.store.Ip,
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Port: uint32(vs.store.Port),
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PublicUrl: vs.store.PublicUrl,
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MaxFileKey: uint64(0),
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DataCenter: vs.store.GetDataCenter(),
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Rack: vs.store.GetRack(),
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Volumes: volumeMessages,
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HasNoVolumes: len(volumeMessages) == 0,
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}
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glog.V(1).Infof("volume server %s:%d stops and deletes all volumes", vs.store.Ip, vs.store.Port)
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if err = stream.Send(emptyBeat); err != nil {
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glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterAddress, err)
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return "", err
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}
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return
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}
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}
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}
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