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Merge pull request #804 from xiangli-cmu/fix_curr_index_race

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fix(store): synchronize access to CurrentIndex
This commit is contained in:
Xiang Li 2014-05-20 14:32:45 -07:00
commit 16d89c906b
1 changed files with 12 additions and 12 deletions
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24
store/store.go
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@ -199,15 +199,15 @@ func getCompareFailCause(n *node, which int, prevValue string, prevIndex uint64)
func (s *store) CompareAndSwap(nodePath string, prevValue string, prevIndex uint64,
value string, expireTime time.Time) (*Event, error) {
s.worldLock.Lock()
defer s.worldLock.Unlock()
nodePath = path.Clean(path.Join("/", nodePath))
// we do not allow the user to change "/"
if nodePath == "/" {
return nil, etcdErr.NewError(etcdErr.EcodeRootROnly, "/", s.CurrentIndex)
}
s.worldLock.Lock()
defer s.worldLock.Unlock()
n, err := s.internalGet(nodePath)
if err != nil {
@ -252,15 +252,15 @@ func (s *store) CompareAndSwap(nodePath string, prevValue string, prevIndex uint
// Delete deletes the node at the given path.
// If the node is a directory, recursive must be true to delete it.
func (s *store) Delete(nodePath string, dir, recursive bool) (*Event, error) {
s.worldLock.Lock()
defer s.worldLock.Unlock()
nodePath = path.Clean(path.Join("/", nodePath))
// we do not allow the user to change "/"
if nodePath == "/" {
return nil, etcdErr.NewError(etcdErr.EcodeRootROnly, "/", s.CurrentIndex)
}
s.worldLock.Lock()
defer s.worldLock.Unlock()
// recursive implies dir
if recursive == true {
dir = true
@ -350,12 +350,12 @@ func (s *store) CompareAndDelete(nodePath string, prevValue string, prevIndex ui
}
func (s *store) Watch(key string, recursive, stream bool, sinceIndex uint64) (*Watcher, error) {
key = path.Clean(path.Join("/", key))
nextIndex := s.CurrentIndex + 1
s.worldLock.RLock()
defer s.worldLock.RUnlock()
key = path.Clean(path.Join("/", key))
nextIndex := s.CurrentIndex + 1
var w *Watcher
var err *etcdErr.Error
@ -402,15 +402,15 @@ func (s *store) walk(nodePath string, walkFunc func(prev *node, component string
// If the node is a file, the value and the ttl can be updated.
// If the node is a directory, only the ttl can be updated.
func (s *store) Update(nodePath string, newValue string, expireTime time.Time) (*Event, error) {
s.worldLock.Lock()
defer s.worldLock.Unlock()
nodePath = path.Clean(path.Join("/", nodePath))
// we do not allow the user to change "/"
if nodePath == "/" {
return nil, etcdErr.NewError(etcdErr.EcodeRootROnly, "/", s.CurrentIndex)
}
s.worldLock.Lock()
defer s.worldLock.Unlock()
currIndex, nextIndex := s.CurrentIndex, s.CurrentIndex+1
n, err := s.internalGet(nodePath)