Browse Source

lock returns host and owner

pull/5637/head
chrislu 11 months ago
parent
commit
d41792461c
  1. 5
      other/java/client/src/main/proto/filer.proto
  2. 107
      weed/cluster/lock_client.go
  3. 4
      weed/cluster/lock_manager/distributed_lock_manager.go
  4. 3
      weed/cluster/lock_manager/lock_manager.go
  5. 11
      weed/mq/broker/broker_server.go
  6. 5
      weed/pb/filer.proto
  7. 359
      weed/pb/filer_pb/filer.pb.go
  8. 5
      weed/server/filer_grpc_server_dlm.go

5
other/java/client/src/main/proto/filer.proto

@ -452,8 +452,9 @@ message LockRequest {
}
message LockResponse {
string renew_token = 1;
string moved_to = 2;
string error = 3;
string lock_owner = 2;
string lock_host_moved_to = 3;
string error = 4;
}
message UnlockRequest {
string name = 1;

107
weed/cluster/lock_client.go

@ -35,9 +35,10 @@ type LiveLock struct {
filer pb.ServerAddress
cancelCh chan struct{}
grpcDialOption grpc.DialOption
isLocked bool
owner string
lc *LockClient
isLocked bool
self string
lc *LockClient
owner string
}
// NewShortLivedLock creates a lock with a 5-second duration
@ -48,27 +49,50 @@ func (lc *LockClient) NewShortLivedLock(key string, owner string) (lock *LiveLoc
cancelCh: make(chan struct{}),
expireAtNs: time.Now().Add(5*time.Second).UnixNano(),
grpcDialOption: lc.grpcDialOption,
owner: owner,
self: owner,
lc: lc,
}
lock.retryUntilLocked(5*time.Second)
return
}
// StartLock starts a goroutine to lock the key and returns immediately.
func (lc *LockClient) StartLock(key string, owner string) (lock *LiveLock) {
// StartLongLivedLock starts a goroutine to lock the key and returns immediately.
func (lc *LockClient) StartLongLivedLock(key string, owner string, onLockOwnerChange func(newLockOwner string)) (lock *LiveLock) {
lock = &LiveLock{
key: key,
filer: lc.seedFiler,
cancelCh: make(chan struct{}),
expireAtNs: time.Now().Add(lock_manager.MaxDuration).UnixNano(),
grpcDialOption: lc.grpcDialOption,
owner: owner,
self: owner,
lc: lc,
}
go func() {
lock.retryUntilLocked(lock_manager.MaxDuration)
lc.keepLock(lock)
isLocked := false
lockOwner := ""
for {
if isLocked {
if err := lock.AttemptToLock(lock_manager.MaxDuration); err != nil {
glog.V(0).Infof("Lost lock %s: %v", key, err)
isLocked = false
}
} else {
if err := lock.AttemptToLock(lock_manager.MaxDuration); err == nil {
isLocked = true
}
}
if lockOwner != lock.LockOwner() && lock.LockOwner() != "" {
glog.V(0).Infof("Lock owner changed from %s to %s", lockOwner, lock.LockOwner())
onLockOwnerChange(lock.LockOwner())
lockOwner = lock.LockOwner()
}
select {
case <-lock.cancelCh:
return
default:
time.Sleep(5*time.Second)
}
}
}()
return
}
@ -118,51 +142,6 @@ func (lock *LiveLock) StopShortLivedLock() error {
})
}
func (lc *LockClient) keepLock(lock *LiveLock) {
ticker := time.Tick(lc.sleepDuration)
for {
select {
case <-ticker:
// renew the lock if lock.expireAtNs is still greater than now
util.RetryUntil("keep lock:"+lock.key, func() error {
lockDuration := time.Duration(lock.expireAtNs-time.Now().UnixNano()) * time.Nanosecond
if lockDuration > lc.maxLockDuration {
lockDuration = lc.maxLockDuration
}
if lockDuration <= 0 {
return nil
}
errorMessage, err := lock.doLock(lockDuration)
if err != nil {
lock.isLocked = false
time.Sleep(time.Second)
glog.V(0).Infof("keep lock %s: %v", lock.key, err)
return err
}
if errorMessage != "" {
lock.isLocked = false
time.Sleep(time.Second)
glog.V(4).Infof("keep lock message %s: %v", lock.key, errorMessage)
return fmt.Errorf("keep lock error: %v", errorMessage)
}
return nil
}, func(err error) (shouldContinue bool) {
if err == nil {
return false
}
glog.Warningf("keep lock %s: %v", lock.key, err)
return true
})
if !lock.isLocked {
return
}
case <-lock.cancelCh:
return
}
}
}
func (lock *LiveLock) doLock(lockDuration time.Duration) (errorMessage string, err error) {
err = pb.WithFilerClient(false, 0, lock.filer, lock.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
resp, err := client.DistributedLock(context.Background(), &filer_pb.LockRequest{
@ -170,19 +149,31 @@ func (lock *LiveLock) doLock(lockDuration time.Duration) (errorMessage string, e
SecondsToLock: int64(lockDuration.Seconds()),
RenewToken: lock.renewToken,
IsMoved: false,
Owner: lock.owner,
Owner: lock.self,
})
if err == nil {
if err == nil && resp != nil {
lock.renewToken = resp.RenewToken
} else {
// this can be retried. Need to remember the last valid renewToken
// lock.renewToken = ""
}
if resp != nil {
errorMessage = resp.Error
if resp.MovedTo != "" {
lock.filer = pb.ServerAddress(resp.MovedTo)
if resp.LockHostMovedTo != "" {
lock.filer = pb.ServerAddress(resp.LockHostMovedTo)
lock.lc.seedFiler = lock.filer
}
if resp.LockOwner != "" {
lock.owner = resp.LockOwner
} else {
lock.owner = ""
}
}
return err
})
return
}
func (lock *LiveLock) LockOwner() string {
return lock.owner
}

4
weed/cluster/lock_manager/distributed_lock_manager.go

@ -25,7 +25,7 @@ func NewDistributedLockManager(host pb.ServerAddress) *DistributedLockManager {
}
}
func (dlm *DistributedLockManager) LockWithTimeout(key string, expiredAtNs int64, token string, owner string) (renewToken string, movedTo pb.ServerAddress, err error) {
func (dlm *DistributedLockManager) LockWithTimeout(key string, expiredAtNs int64, token string, owner string) (lockOwner string, renewToken string, movedTo pb.ServerAddress, err error) {
movedTo, err = dlm.findLockOwningFiler(key)
if err != nil {
return
@ -33,7 +33,7 @@ func (dlm *DistributedLockManager) LockWithTimeout(key string, expiredAtNs int64
if movedTo != dlm.Host {
return
}
renewToken, err = dlm.lockManager.Lock(key, expiredAtNs, token, owner)
lockOwner, renewToken, err = dlm.lockManager.Lock(key, expiredAtNs, token, owner)
return
}

3
weed/cluster/lock_manager/lock_manager.go

@ -33,7 +33,7 @@ func NewLockManager() *LockManager {
return t
}
func (lm *LockManager) Lock(path string, expiredAtNs int64, token string, owner string) (renewToken string, err error) {
func (lm *LockManager) Lock(path string, expiredAtNs int64, token string, owner string) (lockOwner, renewToken string, err error) {
lm.locks.Compute(path, func(oldValue *Lock, loaded bool) (newValue *Lock, delete bool) {
if oldValue != nil {
if oldValue.ExpiredAtNs > 0 && oldValue.ExpiredAtNs < time.Now().UnixNano() {
@ -48,6 +48,7 @@ func (lm *LockManager) Lock(path string, expiredAtNs int64, token string, owner
}
}
// not expired
lockOwner = oldValue.Owner
if oldValue.Token == token {
// token matches, renew the lock
renewToken = uuid.New().String()

11
weed/mq/broker/broker_server.go

@ -86,11 +86,14 @@ func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.Dial
glog.V(0).Infof("broker %s found filer %s", self, mqBroker.currentFiler)
lockClient := cluster.NewLockClient(grpcDialOption, mqBroker.currentFiler)
mqBroker.lockAsBalancer = lockClient.StartLock(pub_balancer.LockBrokerBalancer, string(self))
for {
if err := mqBroker.BrokerConnectToBalancer(string(self)); err != nil {
glog.V(0).Infof("BrokerConnectToBalancer: %v", err)
mqBroker.lockAsBalancer = lockClient.StartLongLivedLock(pub_balancer.LockBrokerBalancer, string(self), func(newLockOwner string) {
balancer := mqBroker.lockAsBalancer.LockOwner()
if err := mqBroker.BrokerConnectToBalancer(balancer); err != nil {
glog.V(0).Infof("BrokerConnectToBalancer %s: %v", balancer, err)
}
})
for {
time.Sleep(time.Second)
if err := mqBroker.lockAsBalancer.AttemptToLock(lock_manager.MaxDuration); err != nil {
glog.V(0).Infof("AttemptToLock: %v", err)

5
weed/pb/filer.proto

@ -452,8 +452,9 @@ message LockRequest {
}
message LockResponse {
string renew_token = 1;
string moved_to = 2;
string error = 3;
string lock_owner = 2;
string lock_host_moved_to = 3;
string error = 4;
}
message UnlockRequest {
string name = 1;

359
weed/pb/filer_pb/filer.pb.go

@ -3696,9 +3696,10 @@ type LockResponse struct {
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
RenewToken string `protobuf:"bytes,1,opt,name=renew_token,json=renewToken,proto3" json:"renew_token,omitempty"`
MovedTo string `protobuf:"bytes,2,opt,name=moved_to,json=movedTo,proto3" json:"moved_to,omitempty"`
Error string `protobuf:"bytes,3,opt,name=error,proto3" json:"error,omitempty"`
RenewToken string `protobuf:"bytes,1,opt,name=renew_token,json=renewToken,proto3" json:"renew_token,omitempty"`
LockOwner string `protobuf:"bytes,2,opt,name=lock_owner,json=lockOwner,proto3" json:"lock_owner,omitempty"`
LockHostMovedTo string `protobuf:"bytes,3,opt,name=lock_host_moved_to,json=lockHostMovedTo,proto3" json:"lock_host_moved_to,omitempty"`
Error string `protobuf:"bytes,4,opt,name=error,proto3" json:"error,omitempty"`
}
func (x *LockResponse) Reset() {
@ -3740,9 +3741,16 @@ func (x *LockResponse) GetRenewToken() string {
return ""
}
func (x *LockResponse) GetMovedTo() string {
func (x *LockResponse) GetLockOwner() string {
if x != nil {
return x.MovedTo
return x.LockOwner
}
return ""
}
func (x *LockResponse) GetLockHostMovedTo() string {
if x != nil {
return x.LockHostMovedTo
}
return ""
}
@ -4826,179 +4834,182 @@ var file_filer_proto_rawDesc = []byte{
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0x74, 0x6f, 0x33,
}
var (

5
weed/server/filer_grpc_server_dlm.go

@ -19,7 +19,7 @@ func (fs *FilerServer) DistributedLock(ctx context.Context, req *filer_pb.LockRe
var movedTo pb.ServerAddress
expiredAtNs := time.Now().Add(time.Duration(req.SecondsToLock) * time.Second).UnixNano()
resp.RenewToken, movedTo, err = fs.filer.Dlm.LockWithTimeout(req.Name, expiredAtNs, req.RenewToken, req.Owner)
resp.LockOwner, resp.RenewToken, movedTo, err = fs.filer.Dlm.LockWithTimeout(req.Name, expiredAtNs, req.RenewToken, req.Owner)
glog.V(3).Infof("lock %s %v %v %v, isMoved=%v %v", req.Name, req.SecondsToLock, req.RenewToken, req.Owner, req.IsMoved, movedTo)
if movedTo != "" && movedTo != fs.option.Host && !req.IsMoved {
err = pb.WithFilerClient(false, 0, movedTo, fs.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
@ -32,6 +32,7 @@ func (fs *FilerServer) DistributedLock(ctx context.Context, req *filer_pb.LockRe
})
if err == nil {
resp.RenewToken = secondResp.RenewToken
resp.LockOwner = secondResp.LockOwner
} else {
resp.Error = secondResp.Error
}
@ -43,7 +44,7 @@ func (fs *FilerServer) DistributedLock(ctx context.Context, req *filer_pb.LockRe
resp.Error = fmt.Sprintf("%v", err)
}
if movedTo != "" {
resp.MovedTo = string(movedTo)
resp.LockHostMovedTo = string(movedTo)
}
return resp, nil

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