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lib/model: Properly handle deleting multiple files when doing scans with subs (fixes #2851)

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This commit is contained in:
Jakob Borg 2016-03-18 12:16:33 +00:00 committed by Audrius Butkevicius
parent 2df001fe5c
commit aba2cc4db2
3 changed files with 61 additions and 64 deletions
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4
lib/db/leveldb_dbinstance.go
View File

@ -259,11 +259,11 @@ func (db *Instance) updateFiles(folder, device []byte, fs []protocol.FileInfo, l
return maxLocalVer
}
func (db *Instance) withHave(folder, device []byte, truncate bool, fn Iterator) {
func (db *Instance) withHave(folder, device, prefix []byte, truncate bool, fn Iterator) {
t := db.newReadOnlyTransaction()
defer t.close()
dbi := t.NewIterator(util.BytesPrefix(db.deviceKey(folder, device, nil)[:keyPrefixLen+keyFolderLen+keyDeviceLen]), nil)
dbi := t.NewIterator(util.BytesPrefix(db.deviceKey(folder, device, prefix)[:keyPrefixLen+keyFolderLen+keyDeviceLen+len(prefix)]), nil)
defer dbi.Release()
for dbi.Next() {

8
lib/db/set.go
View File

@ -171,14 +171,18 @@ func (s *FileSet) WithNeedTruncated(device protocol.DeviceID, fn Iterator) {
func (s *FileSet) WithHave(device protocol.DeviceID, fn Iterator) {
l.Debugf("%s WithHave(%v)", s.folder, device)
s.db.withHave([]byte(s.folder), device[:], false, nativeFileIterator(fn))
s.db.withHave([]byte(s.folder), device[:], nil, false, nativeFileIterator(fn))
}
func (s *FileSet) WithHaveTruncated(device protocol.DeviceID, fn Iterator) {
l.Debugf("%s WithHaveTruncated(%v)", s.folder, device)
s.db.withHave([]byte(s.folder), device[:], true, nativeFileIterator(fn))
s.db.withHave([]byte(s.folder), device[:], nil, true, nativeFileIterator(fn))
}
func (s *FileSet) WithPrefixedHaveTruncated(device protocol.DeviceID, prefix string, fn Iterator) {
l.Debugf("%s WithPrefixedHaveTruncated(%v)", s.folder, device)
s.db.withHave([]byte(s.folder), device[:], []byte(prefix), true, nativeFileIterator(fn))
}
func (s *FileSet) WithGlobal(fn Iterator) {
l.Debugf("%s WithGlobal()", s.folder)
s.db.withGlobal([]byte(s.folder), nil, false, nativeFileIterator(fn))

31
lib/model/model.go
View File

@ -1392,27 +1392,19 @@ func (m *Model) internalScanFolderSubs(folder string, subs []string) error {
m.updateLocals(folder, batch)
}
batch = batch[:0]
// TODO: We should limit the Have scanning to start at sub
seenPrefix := false
var iterError error
fs.WithHaveTruncated(protocol.LocalDeviceID, func(fi db.FileIntf) bool {
f := fi.(db.FileInfoTruncated)
hasPrefix := len(subs) == 0
for _, sub := range subs {
if strings.HasPrefix(f.Name, sub) {
hasPrefix = true
break
}
}
// Return true so that we keep iterating, until we get to the part
// of the tree we are interested in. Then return false so we stop
// iterating when we've passed the end of the subtree.
if !hasPrefix {
return !seenPrefix
if len(subs) == 0 {
// If we have no specific subdirectories to traverse, set it to one
// empty prefix so we traverse the entire folder contents once.
subs = []string{""}
}
seenPrefix = true
// Do a scan of the database for each prefix, to check for deleted files.
batch = batch[:0]
for _, sub := range subs {
var iterError error
fs.WithPrefixedHaveTruncated(protocol.LocalDeviceID, sub, func(fi db.FileIntf) bool {
f := fi.(db.FileInfoTruncated)
if !f.IsDeleted() {
if f.IsInvalid() {
return true
@ -1463,6 +1455,7 @@ func (m *Model) internalScanFolderSubs(folder string, subs []string) error {
l.Infof("Stopping folder %s mid-scan due to folder error: %s", folder, iterError)
return iterError
}
}
if err := m.CheckFolderHealth(folder); err != nil {
l.Infof("Stopping folder %s mid-scan due to folder error: %s", folder, err)