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support multiple locks

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This commit is contained in:
Chris Lu 2020-05-25 18:39:53 -07:00
parent bf86e38f9a
commit d4235afe4d
5 changed files with 234 additions and 166 deletions
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2
weed/pb/master.proto
View File

@ -283,6 +283,7 @@ message ListMasterClientsResponse {
message LeaseAdminTokenRequest {
int64 previous_token = 1;
int64 previous_lock_time = 2;
string lock_name = 3;
}
message LeaseAdminTokenResponse {
int64 token = 1;
@ -292,6 +293,7 @@ message LeaseAdminTokenResponse {
message ReleaseAdminTokenRequest {
int64 previous_token = 1;
int64 previous_lock_time = 2;
string lock_name = 3;
}
message ReleaseAdminTokenResponse {
}

315
weed/pb/master_pb/master.pb.go
View File

@ -1478,8 +1478,9 @@ func (m *ListMasterClientsResponse) GetGrpcAddresses() []string {
}
type LeaseAdminTokenRequest struct {
PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken" json:"previous_token,omitempty"`
PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime" json:"previous_lock_time,omitempty"`
PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken" json:"previous_token,omitempty"`
PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime" json:"previous_lock_time,omitempty"`
LockName string `protobuf:"bytes,3,opt,name=lock_name,json=lockName" json:"lock_name,omitempty"`
}
func (m *LeaseAdminTokenRequest) Reset() { *m = LeaseAdminTokenRequest{} }
@ -1501,6 +1502,13 @@ func (m *LeaseAdminTokenRequest) GetPreviousLockTime() int64 {
return 0
}
func (m *LeaseAdminTokenRequest) GetLockName() string {
if m != nil {
return m.LockName
}
return ""
}
type LeaseAdminTokenResponse struct {
Token int64 `protobuf:"varint,1,opt,name=token" json:"token,omitempty"`
LockTsNs int64 `protobuf:"varint,2,opt,name=lock_ts_ns,json=lockTsNs" json:"lock_ts_ns,omitempty"`
@ -1526,8 +1534,9 @@ func (m *LeaseAdminTokenResponse) GetLockTsNs() int64 {
}
type ReleaseAdminTokenRequest struct {
PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken" json:"previous_token,omitempty"`
PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime" json:"previous_lock_time,omitempty"`
PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken" json:"previous_token,omitempty"`
PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime" json:"previous_lock_time,omitempty"`
LockName string `protobuf:"bytes,3,opt,name=lock_name,json=lockName" json:"lock_name,omitempty"`
}
func (m *ReleaseAdminTokenRequest) Reset() { *m = ReleaseAdminTokenRequest{} }
@ -1549,6 +1558,13 @@ func (m *ReleaseAdminTokenRequest) GetPreviousLockTime() int64 {
return 0
}
func (m *ReleaseAdminTokenRequest) GetLockName() string {
if m != nil {
return m.LockName
}
return ""
}
type ReleaseAdminTokenResponse struct {
}
@ -2138,150 +2154,151 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("master.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 2320 bytes of a gzipped FileDescriptorProto
// 2334 bytes of a gzipped FileDescriptorProto
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}

75
weed/server/master_grpc_server_admin.go
View File

@ -4,6 +4,7 @@ import (
"context"
"fmt"
"math/rand"
"sync"
"time"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
@ -56,13 +57,66 @@ const (
LockDuration = 10 * time.Second
)
type AdminLock struct {
accessSecret int64
accessLockTime time.Time
}
type AdminLocks struct {
locks map[string]*AdminLock
sync.RWMutex
}
func NewAdminLocks() *AdminLocks {
return &AdminLocks{
locks: make(map[string]*AdminLock),
}
}
func (locks *AdminLocks) isLocked(lockName string) bool {
locks.RLock()
defer locks.RUnlock()
adminLock, found := locks.locks[lockName]
if !found {
return false
}
return adminLock.accessLockTime.Add(LockDuration).After(time.Now())
}
func (locks *AdminLocks) isValidToken(lockName string, ts time.Time, token int64) bool {
locks.RLock()
defer locks.RUnlock()
adminLock, found := locks.locks[lockName]
if !found {
return false
}
return adminLock.accessLockTime.Equal(ts) && adminLock.accessSecret == token
}
func (locks *AdminLocks) generateToken(lockName string) (ts time.Time, token int64) {
locks.Lock()
defer locks.Unlock()
lock := &AdminLock{
accessSecret: rand.Int63(),
accessLockTime: time.Now(),
}
locks.locks[lockName] = lock
return lock.accessLockTime, lock.accessSecret
}
func (locks *AdminLocks) deleteLock(lockName string) {
locks.Lock()
defer locks.Unlock()
delete(locks.locks, lockName)
}
func (ms *MasterServer) LeaseAdminToken(ctx context.Context, req *master_pb.LeaseAdminTokenRequest) (*master_pb.LeaseAdminTokenResponse, error) {
resp := &master_pb.LeaseAdminTokenResponse{}
if ms.adminAccessSecret != 0 && ms.adminAccessLockTime.Add(LockDuration).After(time.Now()) {
if req.PreviousToken != 0 && ms.isValidToken(time.Unix(0, req.PreviousLockTime), req.PreviousToken) {
if ms.adminLocks.isLocked(req.LockName) {
if req.PreviousToken != 0 && ms.adminLocks.isValidToken(req.LockName, time.Unix(0, req.PreviousLockTime), req.PreviousToken) {
// for renew
ts, token := ms.generateToken()
ts, token := ms.adminLocks.generateToken(req.LockName)
resp.Token, resp.LockTsNs = token, ts.UnixNano()
return resp, nil
}
@ -70,24 +124,15 @@ func (ms *MasterServer) LeaseAdminToken(ctx context.Context, req *master_pb.Leas
return resp, fmt.Errorf("already locked")
}
// for fresh lease request
ts, token := ms.generateToken()
ts, token := ms.adminLocks.generateToken(req.LockName)
resp.Token, resp.LockTsNs = token, ts.UnixNano()
return resp, nil
}
func (ms *MasterServer) isValidToken(ts time.Time, token int64) bool {
return ms.adminAccessLockTime.Equal(ts) && ms.adminAccessSecret == token
}
func (ms *MasterServer) generateToken() (ts time.Time, token int64) {
ms.adminAccessLockTime = time.Now()
ms.adminAccessSecret = rand.Int63()
return ms.adminAccessLockTime, ms.adminAccessSecret
}
func (ms *MasterServer) ReleaseAdminToken(ctx context.Context, req *master_pb.ReleaseAdminTokenRequest) (*master_pb.ReleaseAdminTokenResponse, error) {
resp := &master_pb.ReleaseAdminTokenResponse{}
if ms.isValidToken(time.Unix(0, req.PreviousLockTime), req.PreviousToken) {
ms.adminAccessSecret = 0
if ms.adminLocks.isValidToken(req.LockName, time.Unix(0, req.PreviousLockTime), req.PreviousToken) {
ms.adminLocks.deleteLock(req.LockName)
}
return resp, nil
}

4
weed/server/master_server.go
View File

@ -66,8 +66,7 @@ type MasterServer struct {
MasterClient *wdclient.MasterClient
adminAccessSecret int64
adminAccessLockTime time.Time
adminLocks *AdminLocks
}
func NewMasterServer(r *mux.Router, option *MasterOption, peers []string) *MasterServer {
@ -96,6 +95,7 @@ func NewMasterServer(r *mux.Router, option *MasterOption, peers []string) *Maste
clientChans: make(map[string]chan *master_pb.VolumeLocation),
grpcDialOption: grpcDialOption,
MasterClient: wdclient.NewMasterClient(grpcDialOption, "master", option.Host, 0, peers),
adminLocks: NewAdminLocks(),
}
ms.bounedLeaderChan = make(chan int, 16)

4
weed/shell/exclusive_locker.go
View File

@ -14,6 +14,7 @@ const (
RenewInteval = 4 * time.Second
SafeRenewInteval = 3 * time.Second
InitLockInteval = 1 * time.Second
AdminLockName = "admin"
)
type ExclusiveLocker struct {
@ -44,6 +45,7 @@ func (l *ExclusiveLocker) RequestLock() {
resp, err := client.LeaseAdminToken(context.Background(), &master_pb.LeaseAdminTokenRequest{
PreviousToken: atomic.LoadInt64(&l.token),
PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
LockName: AdminLockName,
})
if err == nil {
atomic.StoreInt64(&l.token, resp.Token)
@ -67,6 +69,7 @@ func (l *ExclusiveLocker) RequestLock() {
resp, err := client.LeaseAdminToken(context.Background(), &master_pb.LeaseAdminTokenRequest{
PreviousToken: atomic.LoadInt64(&l.token),
PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
LockName: AdminLockName,
})
if err == nil {
atomic.StoreInt64(&l.token, resp.Token)
@ -92,6 +95,7 @@ func (l *ExclusiveLocker) ReleaseLock() {
client.ReleaseAdminToken(context.Background(), &master_pb.ReleaseAdminTokenRequest{
PreviousToken: atomic.LoadInt64(&l.token),
PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
LockName: AdminLockName,
})
return nil
})