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rpc/lock: Make sure to capitalize for proper marshalling. (#3544)

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Distributed setup stopped working for certain
types of operations `6d10f4c19af6861e4de1b22ac20a3e5136f69d67`

This is a regression.

Fixes #3543
This commit is contained in:
Harshavardhana 2017-01-08 20:37:53 -08:00 committed by GitHub
parent a091fe3ed6
commit e1142e99f2
3 changed files with 32 additions and 32 deletions
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58
cmd/lock-rpc-server.go
View File

@ -137,14 +137,14 @@ func (l *lockServer) Lock(args *LockArgs, reply *bool) error {
if err := args.IsAuthenticated(); err != nil {
return err
}
_, *reply = l.lockMap[args.dsyncLockArgs.Resource]
_, *reply = l.lockMap[args.LockArgs.Resource]
if !*reply { // No locks held on the given name, so claim write lock
l.lockMap[args.dsyncLockArgs.Resource] = []lockRequesterInfo{
l.lockMap[args.LockArgs.Resource] = []lockRequesterInfo{
{
writer: true,
node: args.dsyncLockArgs.ServerAddr,
rpcPath: args.dsyncLockArgs.ServiceEndpoint,
uid: args.dsyncLockArgs.UID,
node: args.LockArgs.ServerAddr,
rpcPath: args.LockArgs.ServiceEndpoint,
uid: args.LockArgs.UID,
timestamp: time.Now().UTC(),
timeLastCheck: time.Now().UTC(),
},
@ -162,14 +162,14 @@ func (l *lockServer) Unlock(args *LockArgs, reply *bool) error {
return err
}
var lri []lockRequesterInfo
if lri, *reply = l.lockMap[args.dsyncLockArgs.Resource]; !*reply { // No lock is held on the given name
return fmt.Errorf("Unlock attempted on an unlocked entity: %s", args.dsyncLockArgs.Resource)
if lri, *reply = l.lockMap[args.LockArgs.Resource]; !*reply { // No lock is held on the given name
return fmt.Errorf("Unlock attempted on an unlocked entity: %s", args.LockArgs.Resource)
}
if *reply = isWriteLock(lri); !*reply { // Unless it is a write lock
return fmt.Errorf("Unlock attempted on a read locked entity: %s (%d read locks active)", args.dsyncLockArgs.Resource, len(lri))
return fmt.Errorf("Unlock attempted on a read locked entity: %s (%d read locks active)", args.LockArgs.Resource, len(lri))
}
if !l.removeEntry(args.dsyncLockArgs.Resource, args.dsyncLockArgs.UID, &lri) {
return fmt.Errorf("Unlock unable to find corresponding lock for uid: %s", args.dsyncLockArgs.UID)
if !l.removeEntry(args.LockArgs.Resource, args.LockArgs.UID, &lri) {
return fmt.Errorf("Unlock unable to find corresponding lock for uid: %s", args.LockArgs.UID)
}
return nil
}
@ -183,18 +183,18 @@ func (l *lockServer) RLock(args *LockArgs, reply *bool) error {
}
lrInfo := lockRequesterInfo{
writer: false,
node: args.dsyncLockArgs.ServerAddr,
rpcPath: args.dsyncLockArgs.ServiceEndpoint,
uid: args.dsyncLockArgs.UID,
node: args.LockArgs.ServerAddr,
rpcPath: args.LockArgs.ServiceEndpoint,
uid: args.LockArgs.UID,
timestamp: time.Now().UTC(),
timeLastCheck: time.Now().UTC(),
}
if lri, ok := l.lockMap[args.dsyncLockArgs.Resource]; ok {
if lri, ok := l.lockMap[args.LockArgs.Resource]; ok {
if *reply = !isWriteLock(lri); *reply { // Unless there is a write lock
l.lockMap[args.dsyncLockArgs.Resource] = append(l.lockMap[args.dsyncLockArgs.Resource], lrInfo)
l.lockMap[args.LockArgs.Resource] = append(l.lockMap[args.LockArgs.Resource], lrInfo)
}
} else { // No locks held on the given name, so claim (first) read lock
l.lockMap[args.dsyncLockArgs.Resource] = []lockRequesterInfo{lrInfo}
l.lockMap[args.LockArgs.Resource] = []lockRequesterInfo{lrInfo}
*reply = true
}
return nil
@ -208,14 +208,14 @@ func (l *lockServer) RUnlock(args *LockArgs, reply *bool) error {
return err
}
var lri []lockRequesterInfo
if lri, *reply = l.lockMap[args.dsyncLockArgs.Resource]; !*reply { // No lock is held on the given name
return fmt.Errorf("RUnlock attempted on an unlocked entity: %s", args.dsyncLockArgs.Resource)
if lri, *reply = l.lockMap[args.LockArgs.Resource]; !*reply { // No lock is held on the given name
return fmt.Errorf("RUnlock attempted on an unlocked entity: %s", args.LockArgs.Resource)
}
if *reply = !isWriteLock(lri); !*reply { // A write-lock is held, cannot release a read lock
return fmt.Errorf("RUnlock attempted on a write locked entity: %s", args.dsyncLockArgs.Resource)
return fmt.Errorf("RUnlock attempted on a write locked entity: %s", args.LockArgs.Resource)
}
if !l.removeEntry(args.dsyncLockArgs.Resource, args.dsyncLockArgs.UID, &lri) {
return fmt.Errorf("RUnlock unable to find corresponding read lock for uid: %s", args.dsyncLockArgs.UID)
if !l.removeEntry(args.LockArgs.Resource, args.LockArgs.UID, &lri) {
return fmt.Errorf("RUnlock unable to find corresponding read lock for uid: %s", args.LockArgs.UID)
}
return nil
}
@ -227,11 +227,11 @@ func (l *lockServer) ForceUnlock(args *LockArgs, reply *bool) error {
if err := args.IsAuthenticated(); err != nil {
return err
}
if len(args.dsyncLockArgs.UID) != 0 {
return fmt.Errorf("ForceUnlock called with non-empty UID: %s", args.dsyncLockArgs.UID)
if len(args.LockArgs.UID) != 0 {
return fmt.Errorf("ForceUnlock called with non-empty UID: %s", args.LockArgs.UID)
}
if _, ok := l.lockMap[args.dsyncLockArgs.Resource]; ok { // Only clear lock when set
delete(l.lockMap, args.dsyncLockArgs.Resource) // Remove the lock (irrespective of write or read lock)
if _, ok := l.lockMap[args.LockArgs.Resource]; ok { // Only clear lock when set
delete(l.lockMap, args.LockArgs.Resource) // Remove the lock (irrespective of write or read lock)
}
*reply = true
return nil
@ -245,17 +245,17 @@ func (l *lockServer) Expired(args *LockArgs, reply *bool) error {
return err
}
// Lock found, proceed to verify if belongs to given uid.
if lri, ok := l.lockMap[args.dsyncLockArgs.Resource]; ok {
if lri, ok := l.lockMap[args.LockArgs.Resource]; ok {
// Check whether uid is still active
for _, entry := range lri {
if entry.uid == args.dsyncLockArgs.UID {
if entry.uid == args.LockArgs.UID {
*reply = false // When uid found, lock is still active so return not expired.
return nil // When uid found *reply is set to true.
}
}
}
// When we get here lock is no longer active due to either args.dsyncLockArgs.Resource
// being absent from map or uid not found for given args.dsyncLockArgs.Resource
// When we get here lock is no longer active due to either args.LockArgs.Resource
// being absent from map or uid not found for given args.LockArgs.Resource
*reply = true
return nil
}

2
cmd/lock-rpc-server_test.go
View File

@ -350,7 +350,7 @@ func TestLockRpcServerForceUnlock(t *testing.T) {
}
// Then test force unlock of a lock that does not exist (not returning an error)
laForce.dsyncLockArgs.UID = ""
laForce.LockArgs.UID = ""
laForce.SetRequestTime(time.Now().UTC())
err = locker.ForceUnlock(&laForce, &result)
if err != nil {

4
cmd/rpc-common.go
View File

@ -103,9 +103,9 @@ type LoginRPCReply struct {
// LockArgs represents arguments for any authenticated lock RPC call.
type LockArgs struct {
AuthRPCArgs
dsyncLockArgs dsync.LockArgs
LockArgs dsync.LockArgs
}
func newLockArgs(args dsync.LockArgs) LockArgs {
return LockArgs{dsyncLockArgs: args}
return LockArgs{LockArgs: args}
}