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shell: show which server holds the lock

Browse source 
fix https://github.com/chrislusf/seaweedfs/issues/1983
This commit is contained in:
Chris Lu 2021-04-22 23:56:35 -07:00
parent 89eb9f6e70
commit f0ad172e80
5 changed files with 128 additions and 109 deletions
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1
weed/pb/master.proto
View file

@ -288,6 +288,7 @@ message LeaseAdminTokenRequest {
int64 previous_token = 1;
int64 previous_lock_time = 2;
string lock_name = 3;
string client_name = 4;
}
message LeaseAdminTokenResponse {
int64 token = 1;

206
weed/pb/master_pb/master.pb.go
View file

@ -2468,6 +2468,7 @@ type LeaseAdminTokenRequest struct {
PreviousToken int64 `protobuf:"varint,1,opt,name=previous_token,json=previousToken,proto3" json:"previous_token,omitempty"`
PreviousLockTime int64 `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime,proto3" json:"previous_lock_time,omitempty"`
LockName string `protobuf:"bytes,3,opt,name=lock_name,json=lockName,proto3" json:"lock_name,omitempty"`
ClientName string `protobuf:"bytes,4,opt,name=client_name,json=clientName,proto3" json:"client_name,omitempty"`
}
func (x *LeaseAdminTokenRequest) Reset() {
@ -2523,6 +2524,13 @@ func (x *LeaseAdminTokenRequest) GetLockName() string {
return ""
}
func (x *LeaseAdminTokenRequest) GetClientName() string {
if x != nil {
return x.ClientName
}
return ""
}
type LeaseAdminTokenResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -3268,7 +3276,7 @@ var file_master_proto_rawDesc = []byte{
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}
var (

21
weed/server/master_grpc_server_admin.go
View file

@ -3,6 +3,7 @@ package weed_server
import (
"context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/glog"
"math/rand"
"sync"
"time"
@ -60,6 +61,7 @@ const (
type AdminLock struct {
accessSecret int64
accessLockTime time.Time
lastClient string
}
type AdminLocks struct {
@ -73,14 +75,15 @@ func NewAdminLocks() *AdminLocks {
}
}
func (locks *AdminLocks) isLocked(lockName string) bool {
func (locks *AdminLocks) isLocked(lockName string) (clientName string, isLocked bool) {
locks.RLock()
defer locks.RUnlock()
adminLock, found := locks.locks[lockName]
if !found {
return false
return "", false
}
return adminLock.accessLockTime.Add(LockDuration).After(time.Now())
glog.V(4).Infof("isLocked %v", adminLock.lastClient)
return adminLock.lastClient, adminLock.accessLockTime.Add(LockDuration).After(time.Now())
}
func (locks *AdminLocks) isValidToken(lockName string, ts time.Time, token int64) bool {
@ -93,12 +96,13 @@ func (locks *AdminLocks) isValidToken(lockName string, ts time.Time, token int64
return adminLock.accessLockTime.Equal(ts) && adminLock.accessSecret == token
}
func (locks *AdminLocks) generateToken(lockName string) (ts time.Time, token int64) {
func (locks *AdminLocks) generateToken(lockName string, clientName string) (ts time.Time, token int64) {
locks.Lock()
defer locks.Unlock()
lock := &AdminLock{
accessSecret: rand.Int63(),
accessLockTime: time.Now(),
lastClient: clientName,
}
locks.locks[lockName] = lock
return lock.accessLockTime, lock.accessSecret
@ -113,18 +117,19 @@ func (locks *AdminLocks) deleteLock(lockName string) {
func (ms *MasterServer) LeaseAdminToken(ctx context.Context, req *master_pb.LeaseAdminTokenRequest) (*master_pb.LeaseAdminTokenResponse, error) {
resp := &master_pb.LeaseAdminTokenResponse{}
if ms.adminLocks.isLocked(req.LockName) {
if lastClient, isLocked := ms.adminLocks.isLocked(req.LockName); isLocked {
glog.V(4).Infof("LeaseAdminToken %v", lastClient)
if req.PreviousToken != 0 && ms.adminLocks.isValidToken(req.LockName, time.Unix(0, req.PreviousLockTime), req.PreviousToken) {
// for renew
ts, token := ms.adminLocks.generateToken(req.LockName)
ts, token := ms.adminLocks.generateToken(req.LockName, req.ClientName)
resp.Token, resp.LockTsNs = token, ts.UnixNano()
return resp, nil
}
// refuse since still locked
return resp, fmt.Errorf("already locked")
return resp, fmt.Errorf("already locked by " + lastClient)
}
// for fresh lease request
ts, token := ms.adminLocks.generateToken(req.LockName)
ts, token := ms.adminLocks.generateToken(req.LockName, req.ClientName)
resp.Token, resp.LockTsNs = token, ts.UnixNano()
return resp, nil
}

3
weed/shell/command_fs_lock_unlock.go
View file

@ -1,6 +1,7 @@
package shell
import (
"github.com/chrislusf/seaweedfs/weed/util"
"io"
)
@ -26,7 +27,7 @@ func (c *commandLock) Help() string {
func (c *commandLock) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
commandEnv.locker.RequestLock()
commandEnv.locker.RequestLock(util.DetectedHostAddress())
return nil
}

6
weed/wdclient/exclusive_locks/exclusive_locker.go
View file

@ -41,7 +41,7 @@ func (l *ExclusiveLocker) GetToken() (token int64, lockTsNs int64) {
return atomic.LoadInt64(&l.token), atomic.LoadInt64(&l.lockTsNs)
}
func (l *ExclusiveLocker) RequestLock() {
func (l *ExclusiveLocker) RequestLock(clientName string) {
if l.isLocking {
return
}
@ -56,6 +56,7 @@ func (l *ExclusiveLocker) RequestLock() {
PreviousToken: atomic.LoadInt64(&l.token),
PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
LockName: AdminLockName,
ClientName: clientName,
})
if err == nil {
atomic.StoreInt64(&l.token, resp.Token)
@ -63,7 +64,7 @@ func (l *ExclusiveLocker) RequestLock() {
}
return err
}); err != nil {
// println("leasing problem", err.Error())
println("lock:", err.Error())
time.Sleep(InitLockInteval)
} else {
break
@ -83,6 +84,7 @@ func (l *ExclusiveLocker) RequestLock() {
PreviousToken: atomic.LoadInt64(&l.token),
PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
LockName: AdminLockName,
ClientName: clientName,
})
if err == nil {
atomic.StoreInt64(&l.token, resp.Token)