You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
355 lines
12 KiB
355 lines
12 KiB
package wdclient
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"math/rand"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/stats"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/util"
|
|
"google.golang.org/grpc"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
|
|
)
|
|
|
|
type MasterClient struct {
|
|
FilerGroup string
|
|
clientType string
|
|
clientHost pb.ServerAddress
|
|
rack string
|
|
currentMaster pb.ServerAddress
|
|
currentMasterLock sync.RWMutex
|
|
masters pb.ServerDiscovery
|
|
grpcDialOption grpc.DialOption
|
|
|
|
*vidMap
|
|
vidMapCacheSize int
|
|
OnPeerUpdate func(update *master_pb.ClusterNodeUpdate, startFrom time.Time)
|
|
OnPeerUpdateLock sync.RWMutex
|
|
}
|
|
|
|
func NewMasterClient(grpcDialOption grpc.DialOption, filerGroup string, clientType string, clientHost pb.ServerAddress, clientDataCenter string, rack string, masters pb.ServerDiscovery) *MasterClient {
|
|
return &MasterClient{
|
|
FilerGroup: filerGroup,
|
|
clientType: clientType,
|
|
clientHost: clientHost,
|
|
rack: rack,
|
|
masters: masters,
|
|
grpcDialOption: grpcDialOption,
|
|
vidMap: newVidMap(clientDataCenter),
|
|
vidMapCacheSize: 5,
|
|
}
|
|
}
|
|
|
|
func (mc *MasterClient) SetOnPeerUpdateFn(onPeerUpdate func(update *master_pb.ClusterNodeUpdate, startFrom time.Time)) {
|
|
mc.OnPeerUpdateLock.Lock()
|
|
mc.OnPeerUpdate = onPeerUpdate
|
|
mc.OnPeerUpdateLock.Unlock()
|
|
}
|
|
|
|
func (mc *MasterClient) GetLookupFileIdFunction() LookupFileIdFunctionType {
|
|
return mc.LookupFileIdWithFallback
|
|
}
|
|
|
|
func (mc *MasterClient) LookupFileIdWithFallback(fileId string) (fullUrls []string, err error) {
|
|
fullUrls, err = mc.vidMap.LookupFileId(fileId)
|
|
if err == nil && len(fullUrls) > 0 {
|
|
return
|
|
}
|
|
err = pb.WithMasterClient(false, mc.GetMaster(context.Background()), mc.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
|
|
resp, err := client.LookupVolume(context.Background(), &master_pb.LookupVolumeRequest{
|
|
VolumeOrFileIds: []string{fileId},
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("LookupVolume %s failed: %v", fileId, err)
|
|
}
|
|
for vid, vidLocation := range resp.VolumeIdLocations {
|
|
for _, vidLoc := range vidLocation.Locations {
|
|
loc := Location{
|
|
Url: vidLoc.Url,
|
|
PublicUrl: vidLoc.PublicUrl,
|
|
GrpcPort: int(vidLoc.GrpcPort),
|
|
DataCenter: vidLoc.DataCenter,
|
|
}
|
|
mc.vidMap.addLocation(uint32(vid), loc)
|
|
httpUrl := "http://" + loc.Url + "/" + fileId
|
|
// Prefer same data center
|
|
if mc.DataCenter != "" && mc.DataCenter == loc.DataCenter {
|
|
fullUrls = append([]string{httpUrl}, fullUrls...)
|
|
} else {
|
|
fullUrls = append(fullUrls, httpUrl)
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
})
|
|
return
|
|
}
|
|
|
|
func (mc *MasterClient) getCurrentMaster() pb.ServerAddress {
|
|
mc.currentMasterLock.RLock()
|
|
defer mc.currentMasterLock.RUnlock()
|
|
return mc.currentMaster
|
|
}
|
|
|
|
func (mc *MasterClient) setCurrentMaster(master pb.ServerAddress) {
|
|
mc.currentMasterLock.Lock()
|
|
mc.currentMaster = master
|
|
mc.currentMasterLock.Unlock()
|
|
}
|
|
|
|
func (mc *MasterClient) GetMaster(ctx context.Context) pb.ServerAddress {
|
|
mc.WaitUntilConnected(ctx)
|
|
return mc.getCurrentMaster()
|
|
}
|
|
|
|
func (mc *MasterClient) GetMasters(ctx context.Context) []pb.ServerAddress {
|
|
mc.WaitUntilConnected(ctx)
|
|
return mc.masters.GetInstances()
|
|
}
|
|
|
|
func (mc *MasterClient) WaitUntilConnected(ctx context.Context) {
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
glog.V(0).Infof("Connection wait stopped: %v", ctx.Err())
|
|
return
|
|
default:
|
|
if mc.getCurrentMaster() != "" {
|
|
return
|
|
}
|
|
time.Sleep(time.Duration(rand.Int31n(200)) * time.Millisecond)
|
|
print(".")
|
|
}
|
|
}
|
|
}
|
|
|
|
func (mc *MasterClient) KeepConnectedToMaster(ctx context.Context) {
|
|
glog.V(1).Infof("%s.%s masterClient bootstraps with masters %v", mc.FilerGroup, mc.clientType, mc.masters)
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
glog.V(0).Infof("Connection to masters stopped: %v", ctx.Err())
|
|
return
|
|
default:
|
|
mc.tryAllMasters(ctx)
|
|
time.Sleep(time.Second)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (mc *MasterClient) FindLeaderFromOtherPeers(myMasterAddress pb.ServerAddress) (leader string) {
|
|
for _, master := range mc.masters.GetInstances() {
|
|
if master == myMasterAddress {
|
|
continue
|
|
}
|
|
if grpcErr := pb.WithMasterClient(false, master, mc.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
|
|
ctx, cancel := context.WithTimeout(context.Background(), 120*time.Millisecond)
|
|
defer cancel()
|
|
resp, err := client.GetMasterConfiguration(ctx, &master_pb.GetMasterConfigurationRequest{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
leader = resp.Leader
|
|
return nil
|
|
}); grpcErr != nil {
|
|
glog.V(0).Infof("connect to %s: %v", master, grpcErr)
|
|
}
|
|
if leader != "" {
|
|
glog.V(0).Infof("existing leader is %s", leader)
|
|
return
|
|
}
|
|
}
|
|
glog.V(0).Infof("No existing leader found!")
|
|
return
|
|
}
|
|
|
|
func (mc *MasterClient) tryAllMasters(ctx context.Context) {
|
|
var nextHintedLeader pb.ServerAddress
|
|
mc.masters.RefreshBySrvIfAvailable()
|
|
for _, master := range mc.masters.GetInstances() {
|
|
nextHintedLeader = mc.tryConnectToMaster(ctx, master)
|
|
for nextHintedLeader != "" {
|
|
select {
|
|
case <-ctx.Done():
|
|
glog.V(0).Infof("Connection attempt to all masters stopped: %v", ctx.Err())
|
|
return
|
|
default:
|
|
nextHintedLeader = mc.tryConnectToMaster(ctx, nextHintedLeader)
|
|
}
|
|
}
|
|
mc.setCurrentMaster("")
|
|
}
|
|
}
|
|
|
|
func (mc *MasterClient) tryConnectToMaster(ctx context.Context, master pb.ServerAddress) (nextHintedLeader pb.ServerAddress) {
|
|
glog.V(1).Infof("%s.%s masterClient Connecting to master %v", mc.FilerGroup, mc.clientType, master)
|
|
stats.MasterClientConnectCounter.WithLabelValues("total").Inc()
|
|
gprcErr := pb.WithMasterClient(true, master, mc.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
|
|
ctx, cancel := context.WithCancel(ctx)
|
|
defer cancel()
|
|
|
|
stream, err := client.KeepConnected(ctx)
|
|
if err != nil {
|
|
glog.V(1).Infof("%s.%s masterClient failed to keep connected to %s: %v", mc.FilerGroup, mc.clientType, master, err)
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToKeepConnected).Inc()
|
|
return err
|
|
}
|
|
|
|
if err = stream.Send(&master_pb.KeepConnectedRequest{
|
|
FilerGroup: mc.FilerGroup,
|
|
DataCenter: mc.DataCenter,
|
|
Rack: mc.rack,
|
|
ClientType: mc.clientType,
|
|
ClientAddress: string(mc.clientHost),
|
|
Version: util.Version(),
|
|
}); err != nil {
|
|
glog.V(0).Infof("%s.%s masterClient failed to send to %s: %v", mc.FilerGroup, mc.clientType, master, err)
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToSend).Inc()
|
|
return err
|
|
}
|
|
glog.V(1).Infof("%s.%s masterClient Connected to %v", mc.FilerGroup, mc.clientType, master)
|
|
|
|
resp, err := stream.Recv()
|
|
if err != nil {
|
|
glog.V(0).Infof("%s.%s masterClient failed to receive from %s: %v", mc.FilerGroup, mc.clientType, master, err)
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToReceive).Inc()
|
|
return err
|
|
}
|
|
|
|
// check if it is the leader to determine whether to reset the vidMap
|
|
if resp.VolumeLocation != nil {
|
|
if resp.VolumeLocation.Leader != "" && string(master) != resp.VolumeLocation.Leader {
|
|
glog.V(0).Infof("master %v redirected to leader %v", master, resp.VolumeLocation.Leader)
|
|
nextHintedLeader = pb.ServerAddress(resp.VolumeLocation.Leader)
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.RedirectedToLeader).Inc()
|
|
return nil
|
|
}
|
|
mc.resetVidMap()
|
|
mc.updateVidMap(resp)
|
|
} else {
|
|
mc.resetVidMap()
|
|
}
|
|
mc.setCurrentMaster(master)
|
|
|
|
for {
|
|
resp, err := stream.Recv()
|
|
if err != nil {
|
|
glog.V(0).Infof("%s.%s masterClient failed to receive from %s: %v", mc.FilerGroup, mc.clientType, master, err)
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToReceive).Inc()
|
|
return err
|
|
}
|
|
|
|
if resp.VolumeLocation != nil {
|
|
// maybe the leader is changed
|
|
if resp.VolumeLocation.Leader != "" && string(mc.GetMaster(ctx)) != resp.VolumeLocation.Leader {
|
|
glog.V(0).Infof("currentMaster %v redirected to leader %v", mc.GetMaster(ctx), resp.VolumeLocation.Leader)
|
|
nextHintedLeader = pb.ServerAddress(resp.VolumeLocation.Leader)
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.RedirectedToLeader).Inc()
|
|
return nil
|
|
}
|
|
mc.updateVidMap(resp)
|
|
}
|
|
|
|
if resp.ClusterNodeUpdate != nil {
|
|
update := resp.ClusterNodeUpdate
|
|
mc.OnPeerUpdateLock.RLock()
|
|
if mc.OnPeerUpdate != nil {
|
|
if update.FilerGroup == mc.FilerGroup {
|
|
if update.IsAdd {
|
|
glog.V(0).Infof("+ %s@%s noticed %s.%s %s\n", mc.clientType, mc.clientHost, update.FilerGroup, update.NodeType, update.Address)
|
|
} else {
|
|
glog.V(0).Infof("- %s@%s noticed %s.%s %s\n", mc.clientType, mc.clientHost, update.FilerGroup, update.NodeType, update.Address)
|
|
}
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.OnPeerUpdate).Inc()
|
|
mc.OnPeerUpdate(update, time.Now())
|
|
}
|
|
}
|
|
mc.OnPeerUpdateLock.RUnlock()
|
|
}
|
|
if err := ctx.Err(); err != nil {
|
|
glog.V(0).Infof("Connection attempt to master stopped: %v", err)
|
|
return err
|
|
}
|
|
}
|
|
})
|
|
if gprcErr != nil {
|
|
stats.MasterClientConnectCounter.WithLabelValues(stats.Failed).Inc()
|
|
glog.V(1).Infof("%s.%s masterClient failed to connect with master %v: %v", mc.FilerGroup, mc.clientType, master, gprcErr)
|
|
}
|
|
return
|
|
}
|
|
|
|
func (mc *MasterClient) updateVidMap(resp *master_pb.KeepConnectedResponse) {
|
|
if resp.VolumeLocation.IsEmptyUrl() {
|
|
glog.V(0).Infof("updateVidMap ignore short heartbeat: %+v", resp)
|
|
return
|
|
}
|
|
// process new volume location
|
|
loc := Location{
|
|
Url: resp.VolumeLocation.Url,
|
|
PublicUrl: resp.VolumeLocation.PublicUrl,
|
|
DataCenter: resp.VolumeLocation.DataCenter,
|
|
GrpcPort: int(resp.VolumeLocation.GrpcPort),
|
|
}
|
|
for _, newVid := range resp.VolumeLocation.NewVids {
|
|
glog.V(2).Infof("%s.%s: %s masterClient adds volume %d", mc.FilerGroup, mc.clientType, loc.Url, newVid)
|
|
mc.addLocation(newVid, loc)
|
|
}
|
|
for _, deletedVid := range resp.VolumeLocation.DeletedVids {
|
|
glog.V(2).Infof("%s.%s: %s masterClient removes volume %d", mc.FilerGroup, mc.clientType, loc.Url, deletedVid)
|
|
mc.deleteLocation(deletedVid, loc)
|
|
}
|
|
for _, newEcVid := range resp.VolumeLocation.NewEcVids {
|
|
glog.V(2).Infof("%s.%s: %s masterClient adds ec volume %d", mc.FilerGroup, mc.clientType, loc.Url, newEcVid)
|
|
mc.addEcLocation(newEcVid, loc)
|
|
}
|
|
for _, deletedEcVid := range resp.VolumeLocation.DeletedEcVids {
|
|
glog.V(2).Infof("%s.%s: %s masterClient removes ec volume %d", mc.FilerGroup, mc.clientType, loc.Url, deletedEcVid)
|
|
mc.deleteEcLocation(deletedEcVid, loc)
|
|
}
|
|
glog.V(1).Infof("updateVidMap(%s) %s.%s: %s volume add: %d, del: %d, add ec: %d del ec: %d",
|
|
resp.VolumeLocation.DataCenter, mc.FilerGroup, mc.clientType, loc.Url,
|
|
len(resp.VolumeLocation.NewVids), len(resp.VolumeLocation.DeletedVids),
|
|
len(resp.VolumeLocation.NewEcVids), len(resp.VolumeLocation.DeletedEcVids))
|
|
}
|
|
|
|
func (mc *MasterClient) WithClient(streamingMode bool, fn func(client master_pb.SeaweedClient) error) error {
|
|
getMasterF := func() pb.ServerAddress { return mc.GetMaster(context.Background()) }
|
|
return mc.WithClientCustomGetMaster(getMasterF, streamingMode, fn)
|
|
}
|
|
|
|
func (mc *MasterClient) WithClientCustomGetMaster(getMasterF func() pb.ServerAddress, streamingMode bool, fn func(client master_pb.SeaweedClient) error) error {
|
|
return util.Retry("master grpc", func() error {
|
|
return pb.WithMasterClient(streamingMode, getMasterF(), mc.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
|
|
return fn(client)
|
|
})
|
|
})
|
|
}
|
|
|
|
func (mc *MasterClient) resetVidMap() {
|
|
tail := &vidMap{
|
|
vid2Locations: mc.vid2Locations,
|
|
ecVid2Locations: mc.ecVid2Locations,
|
|
DataCenter: mc.DataCenter,
|
|
cache: mc.cache,
|
|
}
|
|
|
|
nvm := newVidMap(mc.DataCenter)
|
|
nvm.cache = tail
|
|
mc.vidMap = nvm
|
|
|
|
//trim
|
|
for i := 0; i < mc.vidMapCacheSize && tail.cache != nil; i++ {
|
|
if i == mc.vidMapCacheSize-1 {
|
|
tail.cache = nil
|
|
} else {
|
|
tail = tail.cache
|
|
}
|
|
}
|
|
}
|