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refactor store.go update

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This commit is contained in:
Xiang Li 2013-10-08 22:10:18 -07:00
parent a030a41153
commit e597947bd8
1 changed files with 8 additions and 7 deletions
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15
store/store.go
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@ -101,7 +101,7 @@ func (s *Store) Create(nodePath string, value string, incrementalSuffix bool, fo
// Update function updates the value/ttl of the node.
// 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, value string, expireTime time.Time, index uint64, term uint64) (*Event, error) {
func (s *Store) Update(nodePath string, newValue string, expireTime time.Time, index uint64, term uint64) (*Event, error) {
s.worldLock.Lock()
defer s.worldLock.Unlock()
nodePath = path.Clean(path.Join("/", nodePath))
@ -115,17 +115,17 @@ func (s *Store) Update(nodePath string, value string, expireTime time.Time, inde
e := newEvent(Update, nodePath, s.Index, s.Term)
if n.IsDir() { // if the node is a directory, we can only update ttl
if len(value) != 0 {
if len(newValue) != 0 {
if n.IsDir() {
// if the node is a directory, we cannot update value
s.Stats.Inc(UpdateFail)
err := etcdErr.NewError(etcdErr.EcodeNotFile, nodePath, index, term)
return nil, err
}
} else { // if the node is a file, we can update value and ttl
e.PrevValue = n.Value
n.Write(value, index, term)
n.Write(newValue, index, term)
}
// update ttl
@ -165,12 +165,13 @@ func (s *Store) TestAndSet(nodePath string, prevValue string, prevIndex uint64,
}
if n.Value == prevValue || n.ModifiedIndex == prevIndex {
e := newEvent(TestAndSet, nodePath, index, term)
e.PrevValue = n.Value
// if test succeed, write the value
n.Write(value, index, term)
n.UpdateTTL(expireTime, s)
e := newEvent(TestAndSet, nodePath, index, term)
e.PrevValue = n.Value
e.Value = value
e.Expiration, e.TTL = n.ExpirationAndTTL()