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seaweedfs/weed/server/volume_grpc_client_to_master.go
chrislu 9f9ef1340c use streaming mode for long poll grpc calls
streaming mode would create separate grpc connections for each call.
this is to ensure the long poll connections are properly closed.
2021-12-26 00:15:03 -08:00

234 lines
7.7 KiB
Go

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