|
|
@@ -1,4 +1,4 @@
|
|
|
-// Copyright (C) 2018 The Syncthing Authors.
|
|
|
+// Copyright (C) 2014 The Syncthing Authors.
|
|
|
//
|
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
|
@@ -7,7 +7,11 @@
|
|
|
package db
|
|
|
|
|
|
import (
|
|
|
+ "bytes"
|
|
|
+ "encoding/binary"
|
|
|
+
|
|
|
"github.com/syncthing/syncthing/lib/db/backend"
|
|
|
+ "github.com/syncthing/syncthing/lib/protocol"
|
|
|
)
|
|
|
|
|
|
// Lowlevel is the lowest level database interface. It has a very simple
|
|
|
@@ -19,18 +23,835 @@ type Lowlevel struct {
|
|
|
backend.Backend
|
|
|
folderIdx *smallIndex
|
|
|
deviceIdx *smallIndex
|
|
|
+ keyer keyer
|
|
|
}
|
|
|
|
|
|
-// NewLowlevel wraps the given *leveldb.DB into a *lowlevel
|
|
|
-func NewLowlevel(db backend.Backend) *Lowlevel {
|
|
|
- return &Lowlevel{
|
|
|
- Backend: db,
|
|
|
- folderIdx: newSmallIndex(db, []byte{KeyTypeFolderIdx}),
|
|
|
- deviceIdx: newSmallIndex(db, []byte{KeyTypeDeviceIdx}),
|
|
|
+func NewLowlevel(backend backend.Backend) *Lowlevel {
|
|
|
+ db := &Lowlevel{
|
|
|
+ Backend: backend,
|
|
|
+ folderIdx: newSmallIndex(backend, []byte{KeyTypeFolderIdx}),
|
|
|
+ deviceIdx: newSmallIndex(backend, []byte{KeyTypeDeviceIdx}),
|
|
|
}
|
|
|
+ db.keyer = newDefaultKeyer(db.folderIdx, db.deviceIdx)
|
|
|
+ return db
|
|
|
}
|
|
|
|
|
|
// ListFolders returns the list of folders currently in the database
|
|
|
func (db *Lowlevel) ListFolders() []string {
|
|
|
return db.folderIdx.Values()
|
|
|
}
|
|
|
+
|
|
|
+// updateRemoteFiles adds a list of fileinfos to the database and updates the
|
|
|
+// global versionlist and metadata.
|
|
|
+func (db *Lowlevel) updateRemoteFiles(folder, device []byte, fs []protocol.FileInfo, meta *metadataTracker) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ var dk, gk, keyBuf []byte
|
|
|
+ devID := protocol.DeviceIDFromBytes(device)
|
|
|
+ for _, f := range fs {
|
|
|
+ name := []byte(f.Name)
|
|
|
+ dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, device, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ ef, ok, err := t.getFileTrunc(dk, true)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if ok && unchanged(f, ef) {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if ok {
|
|
|
+ meta.removeFile(devID, ef)
|
|
|
+ }
|
|
|
+ meta.addFile(devID, f)
|
|
|
+
|
|
|
+ l.Debugf("insert; folder=%q device=%v %v", folder, devID, f)
|
|
|
+ if err := t.Put(dk, mustMarshal(&f)); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ keyBuf, _, err = t.updateGlobal(gk, keyBuf, folder, device, f, meta)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ if err := t.Checkpoint(); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+// updateLocalFiles adds fileinfos to the db, and updates the global versionlist,
|
|
|
+// metadata, sequence and blockmap buckets.
|
|
|
+func (db *Lowlevel) updateLocalFiles(folder []byte, fs []protocol.FileInfo, meta *metadataTracker) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ var dk, gk, keyBuf []byte
|
|
|
+ blockBuf := make([]byte, 4)
|
|
|
+ for _, f := range fs {
|
|
|
+ name := []byte(f.Name)
|
|
|
+ dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, protocol.LocalDeviceID[:], name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ ef, ok, err := t.getFileByKey(dk)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if ok && unchanged(f, ef) {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if ok {
|
|
|
+ if !ef.IsDirectory() && !ef.IsDeleted() && !ef.IsInvalid() {
|
|
|
+ for _, block := range ef.Blocks {
|
|
|
+ keyBuf, err = db.keyer.GenerateBlockMapKey(keyBuf, folder, block.Hash, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Delete(keyBuf); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ keyBuf, err = db.keyer.GenerateSequenceKey(keyBuf, folder, ef.SequenceNo())
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Delete(keyBuf); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ l.Debugf("removing sequence; folder=%q sequence=%v %v", folder, ef.SequenceNo(), ef.FileName())
|
|
|
+ }
|
|
|
+
|
|
|
+ f.Sequence = meta.nextLocalSeq()
|
|
|
+
|
|
|
+ if ok {
|
|
|
+ meta.removeFile(protocol.LocalDeviceID, ef)
|
|
|
+ }
|
|
|
+ meta.addFile(protocol.LocalDeviceID, f)
|
|
|
+
|
|
|
+ l.Debugf("insert (local); folder=%q %v", folder, f)
|
|
|
+ if err := t.Put(dk, mustMarshal(&f)); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, []byte(f.Name))
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ keyBuf, _, err = t.updateGlobal(gk, keyBuf, folder, protocol.LocalDeviceID[:], f, meta)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ keyBuf, err = db.keyer.GenerateSequenceKey(keyBuf, folder, f.Sequence)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Put(keyBuf, dk); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ l.Debugf("adding sequence; folder=%q sequence=%v %v", folder, f.Sequence, f.Name)
|
|
|
+
|
|
|
+ if !f.IsDirectory() && !f.IsDeleted() && !f.IsInvalid() {
|
|
|
+ for i, block := range f.Blocks {
|
|
|
+ binary.BigEndian.PutUint32(blockBuf, uint32(i))
|
|
|
+ keyBuf, err = db.keyer.GenerateBlockMapKey(keyBuf, folder, block.Hash, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Put(keyBuf, blockBuf); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if err := t.Checkpoint(); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) withHave(folder, device, prefix []byte, truncate bool, fn Iterator) error {
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ if len(prefix) > 0 {
|
|
|
+ unslashedPrefix := prefix
|
|
|
+ if bytes.HasSuffix(prefix, []byte{'/'}) {
|
|
|
+ unslashedPrefix = unslashedPrefix[:len(unslashedPrefix)-1]
|
|
|
+ } else {
|
|
|
+ prefix = append(prefix, '/')
|
|
|
+ }
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateDeviceFileKey(nil, folder, device, unslashedPrefix)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if f, ok, err := t.getFileTrunc(key, true); err != nil {
|
|
|
+ return err
|
|
|
+ } else if ok && !fn(f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateDeviceFileKey(nil, folder, device, prefix)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ for dbi.Next() {
|
|
|
+ name := db.keyer.NameFromDeviceFileKey(dbi.Key())
|
|
|
+ if len(prefix) > 0 && !bytes.HasPrefix(name, prefix) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+
|
|
|
+ f, err := unmarshalTrunc(dbi.Value(), truncate)
|
|
|
+ if err != nil {
|
|
|
+ l.Debugln("unmarshal error:", err)
|
|
|
+ continue
|
|
|
+ }
|
|
|
+ if !fn(f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return dbi.Error()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) withHaveSequence(folder []byte, startSeq int64, fn Iterator) error {
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ first, err := db.keyer.GenerateSequenceKey(nil, folder, startSeq)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ last, err := db.keyer.GenerateSequenceKey(nil, folder, maxInt64)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewRangeIterator(first, last)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ for dbi.Next() {
|
|
|
+ f, ok, err := t.getFileByKey(dbi.Value())
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if !ok {
|
|
|
+ l.Debugln("missing file for sequence number", db.keyer.SequenceFromSequenceKey(dbi.Key()))
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if shouldDebug() {
|
|
|
+ if seq := db.keyer.SequenceFromSequenceKey(dbi.Key()); f.Sequence != seq {
|
|
|
+ l.Warnf("Sequence index corruption (folder %v, file %v): sequence %d != expected %d", string(folder), f.Name, f.Sequence, seq)
|
|
|
+ panic("sequence index corruption")
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if !fn(f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return dbi.Error()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) withAllFolderTruncated(folder []byte, fn func(device []byte, f FileInfoTruncated) bool) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateDeviceFileKey(nil, folder, nil, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key.WithoutNameAndDevice())
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ var gk, keyBuf []byte
|
|
|
+ for dbi.Next() {
|
|
|
+ device, ok := db.keyer.DeviceFromDeviceFileKey(dbi.Key())
|
|
|
+ if !ok {
|
|
|
+ // Not having the device in the index is bad. Clear it.
|
|
|
+ if err := t.Delete(dbi.Key()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ continue
|
|
|
+ }
|
|
|
+ var f FileInfoTruncated
|
|
|
+ // The iterator function may keep a reference to the unmarshalled
|
|
|
+ // struct, which in turn references the buffer it was unmarshalled
|
|
|
+ // from. dbi.Value() just returns an internal slice that it reuses, so
|
|
|
+ // we need to copy it.
|
|
|
+ err := f.Unmarshal(append([]byte{}, dbi.Value()...))
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ switch f.Name {
|
|
|
+ case "", ".", "..", "/": // A few obviously invalid filenames
|
|
|
+ l.Infof("Dropping invalid filename %q from database", f.Name)
|
|
|
+ name := []byte(f.Name)
|
|
|
+ gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ keyBuf, err = t.removeFromGlobal(gk, keyBuf, folder, device, name, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Delete(dbi.Key()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if !fn(device, f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if err := dbi.Error(); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) getFileDirty(folder, device, file []byte) (protocol.FileInfo, bool, error) {
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return protocol.FileInfo{}, false, err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+ return t.getFile(folder, device, file)
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) getGlobalDirty(folder, file []byte, truncate bool) (FileIntf, bool, error) {
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return nil, false, err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+ _, f, ok, err := t.getGlobal(nil, folder, file, truncate)
|
|
|
+ return f, ok, err
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) withGlobal(folder, prefix []byte, truncate bool, fn Iterator) error {
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ if len(prefix) > 0 {
|
|
|
+ unslashedPrefix := prefix
|
|
|
+ if bytes.HasSuffix(prefix, []byte{'/'}) {
|
|
|
+ unslashedPrefix = unslashedPrefix[:len(unslashedPrefix)-1]
|
|
|
+ } else {
|
|
|
+ prefix = append(prefix, '/')
|
|
|
+ }
|
|
|
+
|
|
|
+ if _, f, ok, err := t.getGlobal(nil, folder, unslashedPrefix, truncate); err != nil {
|
|
|
+ return err
|
|
|
+ } else if ok && !fn(f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateGlobalVersionKey(nil, folder, prefix)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ var dk []byte
|
|
|
+ for dbi.Next() {
|
|
|
+ name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
|
|
|
+ if len(prefix) > 0 && !bytes.HasPrefix(name, prefix) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+
|
|
|
+ vl, ok := unmarshalVersionList(dbi.Value())
|
|
|
+ if !ok {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, vl.Versions[0].Device, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ f, ok, err := t.getFileTrunc(dk, truncate)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if !ok {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if !fn(f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ return dbi.Error()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) availability(folder, file []byte) ([]protocol.DeviceID, error) {
|
|
|
+ k, err := db.keyer.GenerateGlobalVersionKey(nil, folder, file)
|
|
|
+ if err != nil {
|
|
|
+ return nil, err
|
|
|
+ }
|
|
|
+ bs, err := db.Get(k)
|
|
|
+ if backend.IsNotFound(err) {
|
|
|
+ return nil, nil
|
|
|
+ }
|
|
|
+ if err != nil {
|
|
|
+ return nil, err
|
|
|
+ }
|
|
|
+
|
|
|
+ vl, ok := unmarshalVersionList(bs)
|
|
|
+ if !ok {
|
|
|
+ return nil, nil
|
|
|
+ }
|
|
|
+
|
|
|
+ var devices []protocol.DeviceID
|
|
|
+ for _, v := range vl.Versions {
|
|
|
+ if !v.Version.Equal(vl.Versions[0].Version) {
|
|
|
+ break
|
|
|
+ }
|
|
|
+ if v.Invalid {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+ n := protocol.DeviceIDFromBytes(v.Device)
|
|
|
+ devices = append(devices, n)
|
|
|
+ }
|
|
|
+
|
|
|
+ return devices, nil
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) withNeed(folder, device []byte, truncate bool, fn Iterator) error {
|
|
|
+ if bytes.Equal(device, protocol.LocalDeviceID[:]) {
|
|
|
+ return db.withNeedLocal(folder, truncate, fn)
|
|
|
+ }
|
|
|
+
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateGlobalVersionKey(nil, folder, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key.WithoutName())
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ var dk []byte
|
|
|
+ devID := protocol.DeviceIDFromBytes(device)
|
|
|
+ for dbi.Next() {
|
|
|
+ vl, ok := unmarshalVersionList(dbi.Value())
|
|
|
+ if !ok {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ haveFV, have := vl.Get(device)
|
|
|
+ // XXX: This marks Concurrent (i.e. conflicting) changes as
|
|
|
+ // needs. Maybe we should do that, but it needs special
|
|
|
+ // handling in the puller.
|
|
|
+ if have && haveFV.Version.GreaterEqual(vl.Versions[0].Version) {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
|
|
|
+ needVersion := vl.Versions[0].Version
|
|
|
+ needDevice := protocol.DeviceIDFromBytes(vl.Versions[0].Device)
|
|
|
+
|
|
|
+ for i := range vl.Versions {
|
|
|
+ if !vl.Versions[i].Version.Equal(needVersion) {
|
|
|
+ // We haven't found a valid copy of the file with the needed version.
|
|
|
+ break
|
|
|
+ }
|
|
|
+
|
|
|
+ if vl.Versions[i].Invalid {
|
|
|
+ // The file is marked invalid, don't use it.
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, vl.Versions[i].Device, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ gf, ok, err := t.getFileTrunc(dk, truncate)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if !ok {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if gf.IsDeleted() && !have {
|
|
|
+ // We don't need deleted files that we don't have
|
|
|
+ break
|
|
|
+ }
|
|
|
+
|
|
|
+ l.Debugf("need folder=%q device=%v name=%q have=%v invalid=%v haveV=%v globalV=%v globalDev=%v", folder, devID, name, have, haveFV.Invalid, haveFV.Version, needVersion, needDevice)
|
|
|
+
|
|
|
+ if !fn(gf) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+
|
|
|
+ // This file is handled, no need to look further in the version list
|
|
|
+ break
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return dbi.Error()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) withNeedLocal(folder []byte, truncate bool, fn Iterator) error {
|
|
|
+ t, err := db.newReadOnlyTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateNeedFileKey(nil, folder, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key.WithoutName())
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ var keyBuf []byte
|
|
|
+ var f FileIntf
|
|
|
+ var ok bool
|
|
|
+ for dbi.Next() {
|
|
|
+ keyBuf, f, ok, err = t.getGlobal(keyBuf, folder, db.keyer.NameFromGlobalVersionKey(dbi.Key()), truncate)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if !ok {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+ if !fn(f) {
|
|
|
+ return nil
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return dbi.Error()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) dropFolder(folder []byte) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ // Remove all items related to the given folder from the device->file bucket
|
|
|
+ k0, err := db.keyer.GenerateDeviceFileKey(nil, folder, nil, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.deleteKeyPrefix(k0.WithoutNameAndDevice()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ // Remove all sequences related to the folder
|
|
|
+ k1, err := db.keyer.GenerateSequenceKey(nil, folder, 0)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.deleteKeyPrefix(k1.WithoutSequence()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ // Remove all items related to the given folder from the global bucket
|
|
|
+ k2, err := db.keyer.GenerateGlobalVersionKey(nil, folder, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.deleteKeyPrefix(k2.WithoutName()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ // Remove all needs related to the folder
|
|
|
+ k3, err := db.keyer.GenerateNeedFileKey(nil, folder, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.deleteKeyPrefix(k3.WithoutName()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ // Remove the blockmap of the folder
|
|
|
+ k4, err := db.keyer.GenerateBlockMapKey(nil, folder, nil, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.deleteKeyPrefix(k4.WithoutHashAndName()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) dropDeviceFolder(device, folder []byte, meta *metadataTracker) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateDeviceFileKey(nil, folder, device, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ var gk, keyBuf []byte
|
|
|
+ for dbi.Next() {
|
|
|
+ name := db.keyer.NameFromDeviceFileKey(dbi.Key())
|
|
|
+ gk, err = db.keyer.GenerateGlobalVersionKey(gk, folder, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ keyBuf, err = t.removeFromGlobal(gk, keyBuf, folder, device, name, meta)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Delete(dbi.Key()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.Checkpoint(); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if err := dbi.Error(); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi.Release()
|
|
|
+
|
|
|
+ if bytes.Equal(device, protocol.LocalDeviceID[:]) {
|
|
|
+ key, err := db.keyer.GenerateBlockMapKey(nil, folder, nil, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ if err := t.deleteKeyPrefix(key.WithoutHashAndName()); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) checkGlobals(folder []byte, meta *metadataTracker) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ key, err := db.keyer.GenerateGlobalVersionKey(nil, folder, nil)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ dbi, err := t.NewPrefixIterator(key.WithoutName())
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer dbi.Release()
|
|
|
+
|
|
|
+ var dk []byte
|
|
|
+ for dbi.Next() {
|
|
|
+ vl, ok := unmarshalVersionList(dbi.Value())
|
|
|
+ if !ok {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ // Check the global version list for consistency. An issue in previous
|
|
|
+ // versions of goleveldb could result in reordered writes so that
|
|
|
+ // there are global entries pointing to no longer existing files. Here
|
|
|
+ // we find those and clear them out.
|
|
|
+
|
|
|
+ name := db.keyer.NameFromGlobalVersionKey(dbi.Key())
|
|
|
+ var newVL VersionList
|
|
|
+ for i, version := range vl.Versions {
|
|
|
+ dk, err = db.keyer.GenerateDeviceFileKey(dk, folder, version.Device, name)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ _, err := t.Get(dk)
|
|
|
+ if backend.IsNotFound(err) {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ newVL.Versions = append(newVL.Versions, version)
|
|
|
+
|
|
|
+ if i == 0 {
|
|
|
+ if fi, ok, err := t.getFileByKey(dk); err != nil {
|
|
|
+ return err
|
|
|
+ } else if ok {
|
|
|
+ meta.addFile(protocol.GlobalDeviceID, fi)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if len(newVL.Versions) != len(vl.Versions) {
|
|
|
+ if err := t.Put(dbi.Key(), mustMarshal(&newVL)); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if err := dbi.Error(); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+
|
|
|
+ l.Debugf("db check completed for %q", folder)
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) getIndexID(device, folder []byte) (protocol.IndexID, error) {
|
|
|
+ key, err := db.keyer.GenerateIndexIDKey(nil, device, folder)
|
|
|
+ if err != nil {
|
|
|
+ return 0, err
|
|
|
+ }
|
|
|
+ cur, err := db.Get(key)
|
|
|
+ if backend.IsNotFound(err) {
|
|
|
+ return 0, nil
|
|
|
+ } else if err != nil {
|
|
|
+ return 0, err
|
|
|
+ }
|
|
|
+
|
|
|
+ var id protocol.IndexID
|
|
|
+ if err := id.Unmarshal(cur); err != nil {
|
|
|
+ return 0, nil
|
|
|
+ }
|
|
|
+
|
|
|
+ return id, nil
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) setIndexID(device, folder []byte, id protocol.IndexID) error {
|
|
|
+ bs, _ := id.Marshal() // marshalling can't fail
|
|
|
+ key, err := db.keyer.GenerateIndexIDKey(nil, device, folder)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ return db.Put(key, bs)
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) dropMtimes(folder []byte) error {
|
|
|
+ key, err := db.keyer.GenerateMtimesKey(nil, folder)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ return db.dropPrefix(key)
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) dropFolderMeta(folder []byte) error {
|
|
|
+ key, err := db.keyer.GenerateFolderMetaKey(nil, folder)
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ return db.dropPrefix(key)
|
|
|
+}
|
|
|
+
|
|
|
+func (db *Lowlevel) dropPrefix(prefix []byte) error {
|
|
|
+ t, err := db.newReadWriteTransaction()
|
|
|
+ if err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ defer t.close()
|
|
|
+
|
|
|
+ if err := t.deleteKeyPrefix(prefix); err != nil {
|
|
|
+ return err
|
|
|
+ }
|
|
|
+ return t.commit()
|
|
|
+}
|
|
|
+
|
|
|
+func unmarshalTrunc(bs []byte, truncate bool) (FileIntf, error) {
|
|
|
+ if truncate {
|
|
|
+ var tf FileInfoTruncated
|
|
|
+ err := tf.Unmarshal(bs)
|
|
|
+ return tf, err
|
|
|
+ }
|
|
|
+
|
|
|
+ var tf protocol.FileInfo
|
|
|
+ err := tf.Unmarshal(bs)
|
|
|
+ return tf, err
|
|
|
+}
|
|
|
+
|
|
|
+func unmarshalVersionList(data []byte) (VersionList, bool) {
|
|
|
+ var vl VersionList
|
|
|
+ if err := vl.Unmarshal(data); err != nil {
|
|
|
+ l.Debugln("unmarshal error:", err)
|
|
|
+ return VersionList{}, false
|
|
|
+ }
|
|
|
+ if len(vl.Versions) == 0 {
|
|
|
+ l.Debugln("empty version list")
|
|
|
+ return VersionList{}, false
|
|
|
+ }
|
|
|
+ return vl, true
|
|
|
+}
|
|
|
+
|
|
|
+// unchanged checks if two files are the same and thus don't need to be updated.
|
|
|
+// Local flags or the invalid bit might change without the version
|
|
|
+// being bumped.
|
|
|
+func unchanged(nf, ef FileIntf) bool {
|
|
|
+ return ef.FileVersion().Equal(nf.FileVersion()) && ef.IsInvalid() == nf.IsInvalid() && ef.FileLocalFlags() == nf.FileLocalFlags()
|
|
|
+}
|
Simon Frei