func ldbInsert(batch dbWriter, repo, node, name []byte, file protocol.FileInfo) {
if debug {
l.Debugf("insert; repo=%q node=%x %v", repo, node, file)
}
nk := nodeKey(repo, node, name)
batch.Put(nk, file.MarshalXDR())
}
func (m *Model) updateLocal(repo string, f protocol.FileInfo) {
f.LocalVersion = 0
m.rmut.RLock()
m.repoFiles[repo].Update(protocol.LocalNodeID, []protocol.FileInfo{f})
m.rmut.RUnlock()
events.Default.Log(events.LocalIndexUpdated, map[string]interface{}{
"repo": repo,
"name": f.Name,
"modified": time.Unix(f.Modified, 0),
"flags": fmt.Sprintf("0%o", f.Flags),
"size": f.Size(),
})
}
func sizeOfFile(f protocol.FileInfo) (files, deleted int, bytes int64) {
if !protocol.IsDeleted(f.Flags) {
files++
if !protocol.IsDirectory(f.Flags) {
bytes += f.Size()
} else {
bytes += zeroEntrySize
}
} else {
deleted++
bytes += zeroEntrySize
}
return
}
func ldbInsert(batch dbWriter, repo, node, name []byte, file protocol.FileInfo) uint64 {
if debug {
l.Debugf("insert; repo=%q node=%v %v", repo, protocol.NodeIDFromBytes(node), file)
}
if file.LocalVersion == 0 {
file.LocalVersion = clock(0)
}
nk := nodeKey(repo, node, name)
batch.Put(nk, file.MarshalXDR())
return file.LocalVersion
}
func ldbGet(db *leveldb.DB, repo, node, file []byte) protocol.FileInfo {
nk := nodeKey(repo, node, file)
bs, err := db.Get(nk, nil)
if err == leveldb.ErrNotFound {
return protocol.FileInfo{}
}
if err != nil {
panic(err)
}
var f protocol.FileInfo
err = f.UnmarshalXDR(bs)
if err != nil {
panic(err)
}
return f
}
func fileInfoFromFile(f scanner.File) protocol.FileInfo {
var blocks = make([]protocol.BlockInfo, len(f.Blocks))
for i, b := range f.Blocks {
blocks[i] = protocol.BlockInfo{
Size: b.Size,
Hash: b.Hash,
}
}
pf := protocol.FileInfo{
Name: filepath.ToSlash(f.Name),
Flags: f.Flags,
Modified: f.Modified,
Version: f.Version,
Blocks: blocks,
}
if f.Suppressed {
pf.Flags |= protocol.FlagInvalid
}
return pf
}
func ldbUpdate(db *leveldb.DB, repo, node []byte, fs []protocol.FileInfo) uint64 {
batch := new(leveldb.Batch)
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
var maxLocalVer uint64
for _, f := range fs {
name := []byte(f.Name)
fk := nodeKey(repo, node, name)
bs, err := snap.Get(fk, nil)
if err == leveldb.ErrNotFound {
if lv := ldbInsert(batch, repo, node, name, f); lv > maxLocalVer {
maxLocalVer = lv
}
ldbUpdateGlobal(snap, batch, repo, node, name, f.Version)
continue
}
var ef protocol.FileInfo
err = ef.UnmarshalXDR(bs)
if err != nil {
panic(err)
}
if ef.Version != f.Version {
if lv := ldbInsert(batch, repo, node, name, f); lv > maxLocalVer {
maxLocalVer = lv
}
ldbUpdateGlobal(snap, batch, repo, node, name, f.Version)
}
}
err = db.Write(batch, nil)
if err != nil {
panic(err)
}
return maxLocalVer
}
func ldbGetGlobal(db *leveldb.DB, repo, file []byte) protocol.FileInfo {
k := globalKey(repo, file)
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
bs, err := snap.Get(k, nil)
if err == leveldb.ErrNotFound {
return protocol.FileInfo{}
}
if err != nil {
panic(err)
}
var vl versionList
err = vl.UnmarshalXDR(bs)
if err != nil {
panic(err)
}
if len(vl.versions) == 0 {
l.Debugln(k)
panic("no versions?")
}
k = nodeKey(repo, vl.versions[0].node, file)
bs, err = snap.Get(k, nil)
if err != nil {
panic(err)
}
var f protocol.FileInfo
err = f.UnmarshalXDR(bs)
if err != nil {
panic(err)
}
return f
}
func ldbWithHave(db *leveldb.DB, repo, node []byte, fn fileIterator) {
start := nodeKey(repo, node, nil) // before all repo/node files
limit := nodeKey(repo, node, []byte{0xff, 0xff, 0xff, 0xff}) // after all repo/node files
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
dbi := snap.NewIterator(&util.Range{Start: start, Limit: limit}, nil)
defer dbi.Release()
for dbi.Next() {
var f protocol.FileInfo
err := f.UnmarshalXDR(dbi.Value())
if err != nil {
panic(err)
}
if cont := fn(f); !cont {
return
}
}
}
func ldbWithGlobal(db *leveldb.DB, repo []byte, fn fileIterator) {
start := globalKey(repo, nil)
limit := globalKey(repo, []byte{0xff, 0xff, 0xff, 0xff})
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
dbi := snap.NewIterator(&util.Range{Start: start, Limit: limit}, nil)
defer dbi.Release()
for dbi.Next() {
var vl versionList
err := vl.UnmarshalXDR(dbi.Value())
if err != nil {
panic(err)
}
if len(vl.versions) == 0 {
l.Debugln(dbi.Key())
panic("no versions?")
}
fk := nodeKey(repo, vl.versions[0].node, globalKeyName(dbi.Key()))
bs, err := snap.Get(fk, nil)
if err != nil {
panic(err)
}
var f protocol.FileInfo
err = f.UnmarshalXDR(bs)
if err != nil {
panic(err)
}
if cont := fn(f); !cont {
return
}
}
}
func ldbReplaceWithDelete(db *leveldb.DB, repo, node []byte, fs []protocol.FileInfo) uint64 {
return ldbGenericReplace(db, repo, node, fs, func(db dbReader, batch dbWriter, repo, node, name []byte, dbi iterator.Iterator) uint64 {
var f protocol.FileInfo
err := f.UnmarshalXDR(dbi.Value())
if err != nil {
panic(err)
}
if !protocol.IsDeleted(f.Flags) {
if debug {
l.Debugf("mark deleted; repo=%q node=%v name=%q", repo, protocol.NodeIDFromBytes(node), name)
}
ts := clock(f.LocalVersion)
f.Blocks = nil
f.Version = lamport.Default.Tick(f.Version)
f.Flags |= protocol.FlagDeleted
f.LocalVersion = ts
batch.Put(dbi.Key(), f.MarshalXDR())
ldbUpdateGlobal(db, batch, repo, node, nodeKeyName(dbi.Key()), f.Version)
return ts
}
return 0
})
}
func ldbGenericReplace(db *leveldb.DB, repo, node []byte, fs []protocol.FileInfo, deleteFn deletionHandler) bool {
sort.Sort(fileList(fs)) // sort list on name, same as on disk
start := nodeKey(repo, node, nil) // before all repo/node files
limit := nodeKey(repo, node, []byte{0xff, 0xff, 0xff, 0xff}) // after all repo/node files
batch := new(leveldb.Batch)
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
dbi := snap.NewIterator(&util.Range{Start: start, Limit: limit}, nil)
defer dbi.Release()
moreDb := dbi.Next()
fsi := 0
changed := false
for {
var newName, oldName []byte
moreFs := fsi < len(fs)
if !moreDb && !moreFs {
break
}
if !moreFs && deleteFn == nil {
// We don't have any more updated files to process and deletion
// has not been requested, so we can exit early
break
}
if moreFs {
newName = []byte(fs[fsi].Name)
}
if moreDb {
oldName = nodeKeyName(dbi.Key())
}
cmp := bytes.Compare(newName, oldName)
if debug {
l.Debugf("generic replace; repo=%q node=%x moreFs=%v moreDb=%v cmp=%d newName=%q oldName=%q", repo, node, moreFs, moreDb, cmp, newName, oldName)
}
switch {
case moreFs && (!moreDb || cmp == -1):
changed = true
// Disk is missing this file. Insert it.
ldbInsert(batch, repo, node, newName, fs[fsi])
ldbUpdateGlobal(snap, batch, repo, node, newName, fs[fsi].Version)
fsi++
case cmp == 0:
// File exists on both sides - compare versions.
var ef protocol.FileInfo
ef.UnmarshalXDR(dbi.Value())
if fs[fsi].Version > ef.Version {
ldbInsert(batch, repo, node, newName, fs[fsi])
ldbUpdateGlobal(snap, batch, repo, node, newName, fs[fsi].Version)
changed = true
}
// Iterate both sides.
fsi++
moreDb = dbi.Next()
case moreDb && (!moreFs || cmp == 1):
if deleteFn != nil {
if deleteFn(snap, batch, repo, node, oldName, dbi) {
changed = true
}
}
moreDb = dbi.Next()
}
}
err = db.Write(batch, nil)
if err != nil {
panic(err)
}
return changed
}
func ldbWithNeed(db *leveldb.DB, repo, node []byte, fn fileIterator) {
start := globalKey(repo, nil)
limit := globalKey(repo, []byte{0xff, 0xff, 0xff, 0xff})
snap, err := db.GetSnapshot()
if err != nil {
panic(err)
}
defer snap.Release()
dbi := snap.NewIterator(&util.Range{Start: start, Limit: limit}, nil)
defer dbi.Release()
for dbi.Next() {
var vl versionList
err := vl.UnmarshalXDR(dbi.Value())
if err != nil {
panic(err)
}
if len(vl.versions) == 0 {
l.Debugln(dbi.Key())
panic("no versions?")
}
have := false // If we have the file, any version
need := false // If we have a lower version of the file
var haveVersion uint64
for _, v := range vl.versions {
if bytes.Compare(v.node, node) == 0 {
have = true
haveVersion = v.version
need = v.version < vl.versions[0].version
break
}
}
if need || !have {
name := globalKeyName(dbi.Key())
if debug {
l.Debugf("need repo=%q node=%x name=%q need=%v have=%v haveV=%d globalV=%d", repo, node, name, need, have, haveVersion, vl.versions[0].version)
}
fk := nodeKey(repo, vl.versions[0].node, name)
bs, err := snap.Get(fk, nil)
if err != nil {
panic(err)
}
var gf protocol.FileInfo
err = gf.UnmarshalXDR(bs)
if err != nil {
panic(err)
}
if protocol.IsDeleted(gf.Flags) && !have {
// We don't need deleted files that we don't have
continue
}
if cont := fn(gf); !cont {
return
}
}
}
}