// Returns the completion status, in percent, for the given node and repo.
func (m *Model) Completion(node protocol.NodeID, repo string) float64 {
var tot int64
m.repoFiles[repo].WithGlobal(func(f protocol.FileInfo) bool {
if !protocol.IsDeleted(f.Flags) {
var size int64
if protocol.IsDirectory(f.Flags) {
size = zeroEntrySize
} else {
size = f.Size()
}
tot += size
}
return true
})
var need int64
m.repoFiles[repo].WithNeed(node, func(f protocol.FileInfo) bool {
if !protocol.IsDeleted(f.Flags) {
var size int64
if protocol.IsDirectory(f.Flags) {
size = zeroEntrySize
} else {
size = f.Size()
}
need += size
}
return true
})
return 100 * (1 - float64(need)/float64(tot))
}
func hashFile(dir string, blockSize int, outbox, inbox chan protocol.FileInfo) {
for f := range inbox {
if protocol.IsDirectory(f.Flags) || protocol.IsDeleted(f.Flags) {
outbox <- f
continue
}
fd, err := os.Open(filepath.Join(dir, f.Name))
if err != nil {
if debug {
l.Debugln("open:", err)
}
continue
}
blocks, err := Blocks(fd, blockSize)
fd.Close()
if err != nil {
if debug {
l.Debugln("hash error:", f.Name, err)
}
continue
}
f.Blocks = blocks
outbox <- f
}
}
// Returns the completion status, in percent, for the given node and repo.
func (m *Model) Completion(node protocol.NodeID, repo string) float64 {
var tot int64
m.rmut.RLock()
rf, ok := m.repoFiles[repo]
m.rmut.RUnlock()
if !ok {
return 0 // Repo doesn't exist, so we hardly have any of it
}
rf.WithGlobal(func(f protocol.FileInfo) bool {
if !protocol.IsDeleted(f.Flags) {
var size int64
if protocol.IsDirectory(f.Flags) {
size = zeroEntrySize
} else {
size = f.Size()
}
tot += size
}
return true
})
if tot == 0 {
return 100 // Repo is empty, so we have all of it
}
var need int64
rf.WithNeed(node, func(f protocol.FileInfo) bool {
if !protocol.IsDeleted(f.Flags) {
var size int64
if protocol.IsDirectory(f.Flags) {
size = zeroEntrySize
} else {
size = f.Size()
}
need += size
}
return true
})
return 100 * (1 - float64(need)/float64(tot))
}
func (p *puller) handleEmptyBlock(b bqBlock) {
f := b.file
of := p.openFiles[f.Name]
if b.last {
if of.err == nil {
of.file.Close()
}
}
if protocol.IsDeleted(f.Flags) {
if debug {
l.Debugf("pull: delete %q", f.Name)
}
os.Remove(of.temp)
// Ensure the file and the directory it is in is writeable so we can remove the file
dirName := filepath.Dir(of.filepath)
os.Chmod(of.filepath, 0666)
if dirName != p.repoCfg.Directory {
os.Chmod(dirName, 0777)
}
if p.versioner != nil {
if debug {
l.Debugln("pull: deleting with versioner")
}
if err := p.versioner.Archive(p.repoCfg.Directory, of.filepath); err == nil {
p.model.updateLocal(p.repoCfg.ID, f)
} else if debug {
l.Debugln("pull: error:", err)
}
} else if err := os.Remove(of.filepath); err == nil || os.IsNotExist(err) {
p.model.updateLocal(p.repoCfg.ID, f)
}
} else {
if debug {
l.Debugf("pull: no blocks to fetch and nothing to copy for %q / %q", p.repoCfg.ID, f.Name)
}
t := time.Unix(f.Modified, 0)
if os.Chtimes(of.temp, t, t) != nil {
delete(p.openFiles, f.Name)
return
}
if !p.repoCfg.IgnorePerms && protocol.HasPermissionBits(f.Flags) && os.Chmod(of.temp, os.FileMode(f.Flags&0777)) != nil {
delete(p.openFiles, f.Name)
return
}
osutil.ShowFile(of.temp)
if osutil.Rename(of.temp, of.filepath) == nil {
p.model.updateLocal(p.repoCfg.ID, f)
}
}
delete(p.openFiles, f.Name)
}
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
}
// Request returns the specified data segment by reading it from local disk.
// Implements the protocol.Model interface.
func (m *Model) Request(nodeID protocol.NodeID, repo, name string, offset int64, size int) ([]byte, error) {
// Verify that the requested file exists in the local model.
m.rmut.RLock()
r, ok := m.repoFiles[repo]
m.rmut.RUnlock()
if !ok {
l.Warnf("Request from %s for file %s in nonexistent repo %q", nodeID, name, repo)
return nil, ErrNoSuchFile
}
lf := r.Get(protocol.LocalNodeID, name)
if protocol.IsInvalid(lf.Flags) || protocol.IsDeleted(lf.Flags) {
if debug {
l.Debugf("REQ(in): %s: %q / %q o=%d s=%d; invalid: %v", nodeID, repo, name, offset, size, lf)
}
return nil, ErrInvalid
}
if offset > lf.Size() {
if debug {
l.Debugf("REQ(in; nonexistent): %s: %q o=%d s=%d", nodeID, name, offset, size)
}
return nil, ErrNoSuchFile
}
if debug && nodeID != protocol.LocalNodeID {
l.Debugf("REQ(in): %s: %q / %q o=%d s=%d", nodeID, repo, name, offset, size)
}
m.rmut.RLock()
fn := filepath.Join(m.repoCfgs[repo].Directory, name)
m.rmut.RUnlock()
fd, err := os.Open(fn) // XXX: Inefficient, should cache fd?
if err != nil {
return nil, err
}
defer fd.Close()
buf := make([]byte, size)
_, err = fd.ReadAt(buf, offset)
if err != nil {
return nil, err
}
return buf, nil
}
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 (m *Model) ScanRepoSub(repo, sub string) error {
if p := filepath.Clean(filepath.Join(repo, sub)); !strings.HasPrefix(p, repo) {
return errors.New("invalid subpath")
}
m.rmut.RLock()
fs, ok := m.repoFiles[repo]
dir := m.repoCfgs[repo].Directory
ignores, _ := ignore.Load(filepath.Join(dir, ".stignore"))
m.repoIgnores[repo] = ignores
w := &scanner.Walker{
Dir: dir,
Sub: sub,
Ignores: ignores,
BlockSize: scanner.StandardBlockSize,
TempNamer: defTempNamer,
CurrentFiler: cFiler{m, repo},
IgnorePerms: m.repoCfgs[repo].IgnorePerms,
}
m.rmut.RUnlock()
if !ok {
return errors.New("no such repo")
}
m.setState(repo, RepoScanning)
fchan, err := w.Walk()
if err != nil {
return err
}
batchSize := 100
batch := make([]protocol.FileInfo, 0, 00)
for f := range fchan {
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(),
})
if len(batch) == batchSize {
fs.Update(protocol.LocalNodeID, batch)
batch = batch[:0]
}
batch = append(batch, f)
}
if len(batch) > 0 {
fs.Update(protocol.LocalNodeID, batch)
}
batch = batch[:0]
// TODO: We should limit the Have scanning to start at sub
seenPrefix := false
fs.WithHaveTruncated(protocol.LocalNodeID, func(fi protocol.FileIntf) bool {
f := fi.(protocol.FileInfoTruncated)
if !strings.HasPrefix(f.Name, sub) {
// 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.
return !seenPrefix
}
seenPrefix = true
if !protocol.IsDeleted(f.Flags) {
if f.IsInvalid() {
return true
}
if len(batch) == batchSize {
fs.Update(protocol.LocalNodeID, batch)
batch = batch[:0]
}
if ignores.Match(f.Name) {
// File has been ignored. Set invalid bit.
nf := protocol.FileInfo{
Name: f.Name,
Flags: f.Flags | protocol.FlagInvalid,
Modified: f.Modified,
Version: f.Version, // The file is still the same, so don't bump version
}
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(),
})
batch = append(batch, nf)
} else if _, err := os.Stat(filepath.Join(dir, f.Name)); err != nil && os.IsNotExist(err) {
// File has been deleted
nf := protocol.FileInfo{
Name: f.Name,
Flags: f.Flags | protocol.FlagDeleted,
Modified: f.Modified,
Version: lamport.Default.Tick(f.Version),
}
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(),
})
batch = append(batch, nf)
}
}
return true
})
if len(batch) > 0 {
fs.Update(protocol.LocalNodeID, batch)
}
m.setState(repo, RepoIdle)
return nil
}
// handleBlock fulfills the block request by copying, ignoring or fetching
// from the network. Returns true if the block was fully handled
// synchronously, i.e. if the slot can be reused.
func (p *puller) handleBlock(b bqBlock) bool {
f := b.file
// For directories, making sure they exist is enough.
// Deleted directories we mark as handled and delete later.
if protocol.IsDirectory(f.Flags) {
if !protocol.IsDeleted(f.Flags) {
path := filepath.Join(p.repoCfg.Directory, f.Name)
_, err := os.Stat(path)
if err != nil && os.IsNotExist(err) {
if debug {
l.Debugf("create dir: %v", f)
}
err = os.MkdirAll(path, os.FileMode(f.Flags&0777))
if err != nil {
p.errors++
l.Infof("mkdir: error: %q: %v", path, err)
}
}
} else if debug {
l.Debugf("ignore delete dir: %v", f)
}
p.model.updateLocal(p.repoCfg.ID, f)
return true
}
if len(b.copy) > 0 && len(b.copy) == len(b.file.Blocks) && b.last {
// We are supposed to copy the entire file, and then fetch nothing.
// We don't actually need to make the copy.
if debug {
l.Debugln("taking shortcut:", f)
}
fp := filepath.Join(p.repoCfg.Directory, f.Name)
t := time.Unix(f.Modified, 0)
err := os.Chtimes(fp, t, t)
if err != nil {
l.Infof("chtimes: error: %q / %q: %v", p.repoCfg.ID, f.Name, err)
}
if !p.repoCfg.IgnorePerms && protocol.HasPermissionBits(f.Flags) {
err = os.Chmod(fp, os.FileMode(f.Flags&0777))
if err != nil {
l.Infof("chmod: error: %q / %q: %v", p.repoCfg.ID, f.Name, err)
}
}
events.Default.Log(events.ItemStarted, map[string]string{
"repo": p.repoCfg.ID,
"item": f.Name,
})
p.model.updateLocal(p.repoCfg.ID, f)
return true
}
of, ok := p.openFiles[f.Name]
of.done = b.last
if !ok {
if debug {
l.Debugf("pull: %q: opening file %q", p.repoCfg.ID, f.Name)
}
events.Default.Log(events.ItemStarted, map[string]string{
"repo": p.repoCfg.ID,
"item": f.Name,
})
of.availability = p.model.repoFiles[p.repoCfg.ID].Availability(f.Name)
of.filepath = filepath.Join(p.repoCfg.Directory, f.Name)
of.temp = filepath.Join(p.repoCfg.Directory, defTempNamer.TempName(f.Name))
dirName := filepath.Dir(of.filepath)
info, err := os.Stat(dirName)
if err != nil {
err = os.MkdirAll(dirName, 0777)
if debug && err != nil {
l.Debugf("mkdir: error: %q / %q: %v", p.repoCfg.ID, f.Name, err)
}
} else {
// We need to make sure the directory is writeable so we can create files in it
if dirName != p.repoCfg.Directory {
err = os.Chmod(dirName, 0777)
if debug && err != nil {
l.Debugf("make writeable: error: %q / %q: %v", p.repoCfg.ID, f.Name, err)
}
}
// Change it back after creating the file, to minimize the time window with incorrect permissions
defer os.Chmod(dirName, info.Mode())
}
of.file, of.err = os.Create(of.temp)
if of.err != nil {
p.errors++
l.Infof("create: error: %q / %q: %v", p.repoCfg.ID, f.Name, of.err)
if !b.last {
p.openFiles[f.Name] = of
}
return true
}
osutil.HideFile(of.temp)
}
if of.err != nil {
// We have already failed this file.
if debug {
l.Debugf("pull: error: %q / %q has already failed: %v", p.repoCfg.ID, f.Name, of.err)
}
if b.last {
delete(p.openFiles, f.Name)
}
return true
}
p.openFiles[f.Name] = of
switch {
case len(b.copy) > 0:
p.handleCopyBlock(b)
return true
case b.block.Size > 0:
return p.handleRequestBlock(b)
default:
p.handleEmptyBlock(b)
return true
}
}
// clean deletes orphaned temporary files and directories that should no
// longer exist.
func (p *puller) clean() {
var deleteDirs []string
var changed = 0
var walkFn = func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.Mode().IsRegular() && defTempNamer.IsTemporary(path) {
os.Remove(path)
}
if !info.IsDir() {
return nil
}
rn, err := filepath.Rel(p.repoCfg.Directory, path)
if err != nil {
return nil
}
if rn == "." {
return nil
}
if filepath.Base(rn) == ".stversions" {
return filepath.SkipDir
}
cur := p.model.CurrentRepoFile(p.repoCfg.ID, rn)
if cur.Name != rn {
// No matching dir in current list; weird
if debug {
l.Debugf("missing dir: %s; %v", rn, cur)
}
return nil
}
if protocol.IsDeleted(cur.Flags) {
if debug {
l.Debugf("queue delete dir: %v", cur)
}
// We queue the directories to delete since we walk the
// tree in depth first order and need to remove the
// directories in the opposite order.
deleteDirs = append(deleteDirs, path)
return nil
}
if !p.repoCfg.IgnorePerms && protocol.HasPermissionBits(cur.Flags) && !scanner.PermsEqual(cur.Flags, uint32(info.Mode())) {
err := os.Chmod(path, os.FileMode(cur.Flags)&os.ModePerm)
if err != nil {
l.Warnf("Restoring folder flags: %q: %v", path, err)
} else {
changed++
if debug {
l.Debugf("restored dir flags: %o -> %v", info.Mode()&os.ModePerm, cur)
}
}
}
return nil
}
for {
deleteDirs = nil
changed = 0
filepath.Walk(p.repoCfg.Directory, walkFn)
var deleted = 0
// Delete any queued directories
for i := len(deleteDirs) - 1; i >= 0; i-- {
dir := deleteDirs[i]
if debug {
l.Debugln("delete dir:", dir)
}
err := os.Remove(dir)
if err == nil {
deleted++
} else {
l.Warnln("Delete dir:", err)
}
}
if debug {
l.Debugf("changed %d, deleted %d dirs", changed, deleted)
}
if changed+deleted == 0 {
return
}
}
}
func (w *Walker) walkAndHashFiles(fchan chan protocol.FileInfo, ign map[string][]string) filepath.WalkFunc {
return func(p string, info os.FileInfo, err error) error {
if err != nil {
if debug {
l.Debugln("error:", p, info, err)
}
return nil
}
rn, err := filepath.Rel(w.Dir, p)
if err != nil {
if debug {
l.Debugln("rel error:", p, err)
}
return nil
}
if rn == "." {
return nil
}
if w.TempNamer != nil && w.TempNamer.IsTemporary(rn) {
// A temporary file
if debug {
l.Debugln("temporary:", rn)
}
return nil
}
if sn := filepath.Base(rn); sn == w.IgnoreFile || sn == ".stversions" || w.ignoreFile(ign, rn) {
// An ignored file
if debug {
l.Debugln("ignored:", rn)
}
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
if (runtime.GOOS == "linux" || runtime.GOOS == "windows") && !norm.NFC.IsNormalString(rn) {
l.Warnf("File %q contains non-NFC UTF-8 sequences and cannot be synced. Consider renaming.", rn)
return nil
}
if info.Mode().IsDir() {
if w.CurrentFiler != nil {
cf := w.CurrentFiler.CurrentFile(rn)
permUnchanged := w.IgnorePerms || !protocol.HasPermissionBits(cf.Flags) || PermsEqual(cf.Flags, uint32(info.Mode()))
if !protocol.IsDeleted(cf.Flags) && protocol.IsDirectory(cf.Flags) && permUnchanged {
return nil
}
}
var flags uint32 = protocol.FlagDirectory
if w.IgnorePerms {
flags |= protocol.FlagNoPermBits | 0777
} else {
flags |= uint32(info.Mode() & os.ModePerm)
}
f := protocol.FileInfo{
Name: rn,
Version: lamport.Default.Tick(0),
Flags: flags,
Modified: info.ModTime().Unix(),
}
if debug {
l.Debugln("dir:", f)
}
fchan <- f
return nil
}
if info.Mode().IsRegular() {
if w.CurrentFiler != nil {
cf := w.CurrentFiler.CurrentFile(rn)
permUnchanged := w.IgnorePerms || !protocol.HasPermissionBits(cf.Flags) || PermsEqual(cf.Flags, uint32(info.Mode()))
if !protocol.IsDeleted(cf.Flags) && cf.Modified == info.ModTime().Unix() && permUnchanged {
return nil
}
if debug {
l.Debugln("rescan:", cf, info.ModTime().Unix(), info.Mode()&os.ModePerm)
}
}
var flags = uint32(info.Mode() & os.ModePerm)
if w.IgnorePerms {
flags = protocol.FlagNoPermBits | 0666
}
fchan <- protocol.FileInfo{
Name: rn,
Version: lamport.Default.Tick(0),
Flags: flags,
Modified: info.ModTime().Unix(),
}
}
return nil
}
}
func (m *Model) ScanRepoSub(repo, sub string) error {
if p := filepath.Clean(filepath.Join(repo, sub)); !strings.HasPrefix(p, repo) {
return errors.New("invalid subpath")
}
m.rmut.RLock()
fs, ok := m.repoFiles[repo]
dir := m.repoCfgs[repo].Directory
w := &scanner.Walker{
Dir: dir,
Sub: sub,
IgnoreFile: ".stignore",
BlockSize: scanner.StandardBlockSize,
TempNamer: defTempNamer,
CurrentFiler: cFiler{m, repo},
IgnorePerms: m.repoCfgs[repo].IgnorePerms,
}
m.rmut.RUnlock()
if !ok {
return errors.New("no such repo")
}
m.setState(repo, RepoScanning)
fchan, err := w.Walk()
if err != nil {
return err
}
batchSize := 100
batch := make([]protocol.FileInfo, 0, 00)
for f := range fchan {
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(),
})
if len(batch) == batchSize {
fs.Update(protocol.LocalNodeID, batch)
batch = batch[:0]
}
batch = append(batch, f)
}
if len(batch) > 0 {
fs.Update(protocol.LocalNodeID, batch)
}
batch = batch[:0]
// TODO: We should limit the Have scanning to start at sub
seenPrefix := false
fs.WithHaveTruncated(protocol.LocalNodeID, func(fi protocol.FileIntf) bool {
f := fi.(protocol.FileInfoTruncated)
if !strings.HasPrefix(f.Name, sub) {
return !seenPrefix
}
seenPrefix = true
if !protocol.IsDeleted(f.Flags) {
if len(batch) == batchSize {
fs.Update(protocol.LocalNodeID, batch)
batch = batch[:0]
}
if _, err := os.Stat(filepath.Join(dir, f.Name)); err != nil && os.IsNotExist(err) {
// File has been deleted
nf := protocol.FileInfo{
Name: f.Name,
Flags: f.Flags | protocol.FlagDeleted,
Modified: f.Modified,
Version: lamport.Default.Tick(f.Version),
}
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(),
})
batch = append(batch, nf)
}
}
return true
})
if len(batch) > 0 {
fs.Update(protocol.LocalNodeID, batch)
}
m.setState(repo, RepoIdle)
return nil
}
func (m *Model) ScanRepo(repo string) error {
m.rmut.RLock()
fs := m.repoFiles[repo]
dir := m.repoCfgs[repo].Directory
w := &scanner.Walker{
Dir: dir,
IgnoreFile: ".stignore",
BlockSize: scanner.StandardBlockSize,
TempNamer: defTempNamer,
Suppressor: m.suppressor[repo],
CurrentFiler: cFiler{m, repo},
IgnorePerms: m.repoCfgs[repo].IgnorePerms,
}
m.rmut.RUnlock()
m.setState(repo, RepoScanning)
fchan, _, err := w.Walk()
if err != nil {
return err
}
batchSize := 100
batch := make([]protocol.FileInfo, 0, 00)
for f := range fchan {
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(),
})
if len(batch) == batchSize {
fs.Update(protocol.LocalNodeID, batch)
batch = batch[:0]
}
batch = append(batch, f)
}
if len(batch) > 0 {
fs.Update(protocol.LocalNodeID, batch)
}
batch = batch[:0]
fs.WithHave(protocol.LocalNodeID, func(f protocol.FileInfo) bool {
if !protocol.IsDeleted(f.Flags) {
if len(batch) == batchSize {
fs.Update(protocol.LocalNodeID, batch)
batch = batch[:0]
}
if _, err := os.Stat(filepath.Join(dir, f.Name)); err != nil && os.IsNotExist(err) {
// File has been deleted
f.Blocks = nil
f.Flags |= protocol.FlagDeleted
f.Version = lamport.Default.Tick(f.Version)
f.LocalVersion = 0
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(),
})
batch = append(batch, f)
}
}
return true
})
if len(batch) > 0 {
fs.Update(protocol.LocalNodeID, batch)
}
m.setState(repo, RepoIdle)
return nil
}
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())
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 debug {
l.Debugf("need repo=%q node=%v name=%q need=%v have=%v haveV=%d globalV=%d", repo, protocol.NodeIDFromBytes(node), name, need, have, haveVersion, vl.versions[0].version)
}
if cont := fn(gf); !cont {
return
}
}
}
}