2014-11-16 21:13:20 +01:00
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// Copyright (C) 2014 The Syncthing Authors.
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2014-09-29 21:43:32 +02:00
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//
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2015-03-07 21:36:35 +01:00
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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2017-02-09 07:52:18 +01:00
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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2014-06-01 22:50:14 +02:00
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2015-01-12 14:50:30 +01:00
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// Package db provides a set type to track local/remote files with newness
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2014-08-15 12:52:16 +02:00
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// checks. We must do a certain amount of normalization in here. We will get
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// fed paths with either native or wire-format separators and encodings
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// depending on who calls us. We transform paths to wire-format (NFC and
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// slashes) on the way to the database, and transform to native format
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// (varying separator and encoding) on the way back out.
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2015-01-12 14:50:30 +01:00
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package db
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2014-03-28 14:36:57 +01:00
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import (
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2017-12-14 10:51:17 +01:00
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"os"
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"time"
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2015-10-20 15:58:18 +02:00
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2016-08-05 19:45:45 +02:00
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"github.com/syncthing/syncthing/lib/fs"
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2015-08-06 11:29:25 +02:00
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"github.com/syncthing/syncthing/lib/osutil"
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2015-09-22 19:38:46 +02:00
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"github.com/syncthing/syncthing/lib/protocol"
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2015-08-06 11:29:25 +02:00
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"github.com/syncthing/syncthing/lib/sync"
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2014-03-28 14:36:57 +01:00
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)
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2015-01-12 14:52:24 +01:00
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type FileSet struct {
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2017-12-14 10:51:17 +01:00
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folder string
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fs fs.Filesystem
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db *Instance
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blockmap *BlockMap
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meta *metadataTracker
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updateMutex sync.Mutex // protects database updates and the corresponding metadata changes
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2014-03-28 14:36:57 +01:00
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}
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2015-01-09 08:18:42 +01:00
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// FileIntf is the set of methods implemented by both protocol.FileInfo and
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2016-07-04 12:40:29 +02:00
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// FileInfoTruncated.
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2015-01-09 08:18:42 +01:00
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type FileIntf interface {
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2016-07-04 12:40:29 +02:00
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FileSize() int64
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FileName() string
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2018-07-12 10:15:57 +02:00
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FileLocalFlags() uint32
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2015-01-09 08:18:42 +01:00
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IsDeleted() bool
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IsInvalid() bool
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2018-07-12 10:15:57 +02:00
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IsIgnored() bool
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IsUnsupported() bool
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MustRescan() bool
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2015-01-09 08:18:42 +01:00
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IsDirectory() bool
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IsSymlink() bool
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HasPermissionBits() bool
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2017-12-14 10:51:17 +01:00
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SequenceNo() int64
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2018-04-16 20:08:50 +02:00
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BlockSize() int
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2018-06-02 15:08:32 +02:00
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FileVersion() protocol.Vector
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2015-01-09 08:18:42 +01:00
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}
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// The Iterator is called with either a protocol.FileInfo or a
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2016-07-04 12:40:29 +02:00
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// FileInfoTruncated (depending on the method) and returns true to
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2015-01-09 08:18:42 +01:00
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// continue iteration, false to stop.
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type Iterator func(f FileIntf) bool
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2017-12-14 10:51:17 +01:00
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var databaseRecheckInterval = 30 * 24 * time.Hour
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2015-10-21 09:10:26 +02:00
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2017-12-14 10:51:17 +01:00
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func init() {
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if dur, err := time.ParseDuration(os.Getenv("STRECHECKDBEVERY")); err == nil {
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databaseRecheckInterval = dur
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2015-10-20 15:58:18 +02:00
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}
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}
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2017-12-14 10:51:17 +01:00
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func NewFileSet(folder string, fs fs.Filesystem, db *Instance) *FileSet {
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var s = FileSet{
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folder: folder,
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fs: fs,
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db: db,
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blockmap: NewBlockMap(db, db.folderIdx.ID([]byte(folder))),
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meta: newMetadataTracker(),
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updateMutex: sync.NewMutex(),
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2015-10-20 15:58:18 +02:00
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}
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2015-10-21 09:10:26 +02:00
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2017-12-14 10:51:17 +01:00
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if err := s.meta.fromDB(db, []byte(folder)); err != nil {
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l.Infof("No stored folder metadata for %q: recalculating", folder)
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s.recalcCounts()
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} else if age := time.Since(s.meta.Created()); age > databaseRecheckInterval {
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l.Infof("Stored folder metadata for %q is %v old; recalculating", folder, age)
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s.recalcCounts()
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2015-10-20 15:58:18 +02:00
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}
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2017-12-14 10:51:17 +01:00
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return &s
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2017-11-12 21:20:34 +01:00
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}
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2017-12-14 10:51:17 +01:00
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func (s *FileSet) recalcCounts() {
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s.meta = newMetadataTracker()
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2015-10-20 15:58:18 +02:00
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2017-12-14 10:51:17 +01:00
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s.db.checkGlobals([]byte(s.folder), s.meta)
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2014-10-30 16:48:14 +01:00
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2014-09-28 13:00:38 +02:00
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var deviceID protocol.DeviceID
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2017-12-14 10:51:17 +01:00
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s.db.withAllFolderTruncated([]byte(s.folder), func(device []byte, f FileInfoTruncated) bool {
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2014-09-28 13:00:38 +02:00
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copy(deviceID[:], device)
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2017-12-14 10:51:17 +01:00
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s.meta.addFile(deviceID, f)
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2014-07-15 13:04:37 +02:00
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return true
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})
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2017-12-14 10:51:17 +01:00
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s.meta.SetCreated()
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s.meta.toDB(s.db, []byte(s.folder))
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2014-03-28 14:36:57 +01:00
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}
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2017-11-12 21:20:34 +01:00
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func (s *FileSet) Drop(device protocol.DeviceID) {
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l.Debugf("%s Drop(%v)", s.folder, device)
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2016-07-23 20:32:10 +02:00
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s.updateMutex.Lock()
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defer s.updateMutex.Unlock()
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2017-12-14 10:51:17 +01:00
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s.db.dropDeviceFolder(device[:], []byte(s.folder), s.meta)
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2017-11-12 21:20:34 +01:00
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2014-10-07 23:15:01 +02:00
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if device == protocol.LocalDeviceID {
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s.blockmap.Drop()
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2017-12-14 10:51:17 +01:00
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s.meta.resetCounts(device)
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// We deliberately do not reset the sequence number here. Dropping
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// all files for the local device ID only happens in testing - which
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// expects the sequence to be retained, like an old Replace() of all
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// files would do. However, if we ever did it "in production" we
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// would anyway want to retain the sequence for delta indexes to be
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// happy.
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2017-11-12 21:20:34 +01:00
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} else {
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// Here, on the other hand, we want to make sure that any file
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// announced from the remote is newer than our current sequence
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// number.
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2017-12-14 10:51:17 +01:00
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s.meta.resetAll(device)
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2014-10-07 23:15:01 +02:00
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}
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2017-12-14 10:51:17 +01:00
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s.meta.toDB(s.db, []byte(s.folder))
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2014-03-28 14:36:57 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) Update(device protocol.DeviceID, fs []protocol.FileInfo) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s Update(%v, [%d])", s.folder, device, len(fs))
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2018-01-18 13:40:43 +01:00
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// do not modify fs in place, it is still used in outer scope
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fs = append([]protocol.FileInfo(nil), fs...)
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2014-08-15 12:52:16 +02:00
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normalizeFilenames(fs)
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2016-07-23 20:32:10 +02:00
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s.updateMutex.Lock()
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defer s.updateMutex.Unlock()
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2014-10-22 16:24:11 +02:00
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if device == protocol.LocalDeviceID {
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discards := make([]protocol.FileInfo, 0, len(fs))
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updates := make([]protocol.FileInfo, 0, len(fs))
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2017-10-24 22:05:29 +02:00
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// db.UpdateFiles will sort unchanged files out -> save one db lookup
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// filter slice according to https://github.com/golang/go/wiki/SliceTricks#filtering-without-allocating
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oldFs := fs
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fs = fs[:0]
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2018-05-01 23:39:15 +02:00
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var dk []byte
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folder := []byte(s.folder)
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2017-10-24 22:05:29 +02:00
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for _, nf := range oldFs {
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2018-05-01 23:39:15 +02:00
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dk = s.db.deviceKeyInto(dk, folder, device[:], []byte(osutil.NormalizedFilename(nf.Name)))
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ef, ok := s.db.getFile(dk)
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2018-06-24 09:50:18 +02:00
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if ok && ef.Version.Equal(nf.Version) && ef.IsInvalid() == nf.IsInvalid() {
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2017-10-24 22:05:29 +02:00
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continue
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2014-10-22 16:24:11 +02:00
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}
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2017-11-12 21:20:34 +01:00
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2017-12-14 10:51:17 +01:00
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nf.Sequence = s.meta.nextSeq(protocol.LocalDeviceID)
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2017-10-24 22:05:29 +02:00
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fs = append(fs, nf)
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2017-11-12 21:20:34 +01:00
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if ok {
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discards = append(discards, ef)
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}
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2017-10-24 22:05:29 +02:00
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updates = append(updates, nf)
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2014-10-22 16:24:11 +02:00
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}
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s.blockmap.Discard(discards)
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s.blockmap.Update(updates)
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2018-05-01 23:39:15 +02:00
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s.db.removeSequences(folder, discards)
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s.db.addSequences(folder, updates)
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2014-10-22 16:24:11 +02:00
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}
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2017-12-14 10:51:17 +01:00
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s.db.updateFiles([]byte(s.folder), device[:], fs, s.meta)
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s.meta.toDB(s.db, []byte(s.folder))
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2014-03-28 14:36:57 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) WithNeed(device protocol.DeviceID, fn Iterator) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s WithNeed(%v)", s.folder, device)
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2018-02-25 09:39:00 +01:00
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s.db.withNeed([]byte(s.folder), device[:], false, nativeFileIterator(fn))
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2014-08-12 13:53:31 +02:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) WithNeedTruncated(device protocol.DeviceID, fn Iterator) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s WithNeedTruncated(%v)", s.folder, device)
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2018-02-25 09:39:00 +01:00
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s.db.withNeed([]byte(s.folder), device[:], true, nativeFileIterator(fn))
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2014-03-28 14:36:57 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) WithHave(device protocol.DeviceID, fn Iterator) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s WithHave(%v)", s.folder, device)
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2016-03-18 13:16:33 +01:00
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s.db.withHave([]byte(s.folder), device[:], nil, false, nativeFileIterator(fn))
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2014-08-12 13:53:31 +02:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) WithHaveTruncated(device protocol.DeviceID, fn Iterator) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s WithHaveTruncated(%v)", s.folder, device)
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2016-03-18 13:16:33 +01:00
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s.db.withHave([]byte(s.folder), device[:], nil, true, nativeFileIterator(fn))
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2014-03-28 14:36:57 +01:00
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}
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2018-05-01 23:39:15 +02:00
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func (s *FileSet) WithHaveSequence(startSeq int64, fn Iterator) {
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l.Debugf("%s WithHaveSequence(%v)", s.folder, startSeq)
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s.db.withHaveSequence([]byte(s.folder), startSeq, nativeFileIterator(fn))
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}
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2018-05-17 09:26:40 +02:00
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// Except for an item with a path equal to prefix, only children of prefix are iterated.
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// E.g. for prefix "dir", "dir/file" is iterated, but "dir.file" is not.
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2018-02-14 08:59:46 +01:00
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func (s *FileSet) WithPrefixedHaveTruncated(device protocol.DeviceID, prefix string, fn Iterator) {
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2018-05-17 09:26:40 +02:00
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l.Debugf(`%s WithPrefixedHaveTruncated(%v, "%v")`, s.folder, device, prefix)
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2018-02-14 08:59:46 +01:00
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s.db.withHave([]byte(s.folder), device[:], []byte(osutil.NormalizedFilename(prefix)), true, nativeFileIterator(fn))
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2016-03-18 13:16:33 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) WithGlobal(fn Iterator) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s WithGlobal()", s.folder)
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2015-10-28 21:01:46 +01:00
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s.db.withGlobal([]byte(s.folder), nil, false, nativeFileIterator(fn))
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2014-08-12 16:17:28 +02:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) WithGlobalTruncated(fn Iterator) {
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2015-10-03 17:25:21 +02:00
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l.Debugf("%s WithGlobalTruncated()", s.folder)
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2015-10-28 21:01:46 +01:00
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s.db.withGlobal([]byte(s.folder), nil, true, nativeFileIterator(fn))
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2015-02-07 11:52:42 +01:00
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}
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2018-05-17 09:26:40 +02:00
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// Except for an item with a path equal to prefix, only children of prefix are iterated.
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// E.g. for prefix "dir", "dir/file" is iterated, but "dir.file" is not.
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2015-02-07 11:52:42 +01:00
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func (s *FileSet) WithPrefixedGlobalTruncated(prefix string, fn Iterator) {
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2018-05-17 09:26:40 +02:00
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l.Debugf(`%s WithPrefixedGlobalTruncated("%v")`, s.folder, prefix)
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2015-10-28 21:01:46 +01:00
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s.db.withGlobal([]byte(s.folder), []byte(osutil.NormalizedFilename(prefix)), true, nativeFileIterator(fn))
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2014-03-28 14:36:57 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) Get(device protocol.DeviceID, file string) (protocol.FileInfo, bool) {
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2018-05-01 23:39:15 +02:00
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f, ok := s.db.getFile(s.db.deviceKey([]byte(s.folder), device[:], []byte(osutil.NormalizedFilename(file))))
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2014-11-06 00:41:51 +01:00
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f.Name = osutil.NativeFilename(f.Name)
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2015-01-06 22:12:45 +01:00
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return f, ok
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2014-03-28 14:36:57 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) GetGlobal(file string) (protocol.FileInfo, bool) {
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2015-10-28 21:01:46 +01:00
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fi, ok := s.db.getGlobal([]byte(s.folder), []byte(osutil.NormalizedFilename(file)), false)
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2015-01-09 08:41:02 +01:00
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if !ok {
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return protocol.FileInfo{}, false
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}
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f := fi.(protocol.FileInfo)
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2014-11-06 00:41:51 +01:00
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f.Name = osutil.NativeFilename(f.Name)
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2015-01-09 08:41:02 +01:00
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return f, true
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) GetGlobalTruncated(file string) (FileInfoTruncated, bool) {
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2015-10-28 21:01:46 +01:00
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fi, ok := s.db.getGlobal([]byte(s.folder), []byte(osutil.NormalizedFilename(file)), true)
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2015-01-09 08:41:02 +01:00
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if !ok {
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return FileInfoTruncated{}, false
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}
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f := fi.(FileInfoTruncated)
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f.Name = osutil.NativeFilename(f.Name)
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return f, true
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2014-03-28 14:36:57 +01:00
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}
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2015-01-12 14:52:24 +01:00
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func (s *FileSet) Availability(file string) []protocol.DeviceID {
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2015-10-28 21:01:46 +01:00
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return s.db.availability([]byte(s.folder), []byte(osutil.NormalizedFilename(file)))
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2014-03-28 14:36:57 +01:00
|
|
|
}
|
|
|
|
|
2016-07-29 21:54:24 +02:00
|
|
|
func (s *FileSet) Sequence(device protocol.DeviceID) int64 {
|
2018-07-12 10:15:57 +02:00
|
|
|
return s.meta.Counts(device, 0).Sequence
|
2014-03-28 14:36:57 +01:00
|
|
|
}
|
2014-08-15 12:52:16 +02:00
|
|
|
|
2016-10-17 14:10:17 +02:00
|
|
|
func (s *FileSet) LocalSize() Counts {
|
2018-07-12 10:15:57 +02:00
|
|
|
local := s.meta.Counts(protocol.LocalDeviceID, 0)
|
|
|
|
recvOnlyChanged := s.meta.Counts(protocol.LocalDeviceID, protocol.FlagLocalReceiveOnly)
|
|
|
|
return local.Add(recvOnlyChanged)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (s *FileSet) ReceiveOnlyChangedSize() Counts {
|
|
|
|
return s.meta.Counts(protocol.LocalDeviceID, protocol.FlagLocalReceiveOnly)
|
2015-10-21 09:10:26 +02:00
|
|
|
}
|
|
|
|
|
2016-10-17 14:10:17 +02:00
|
|
|
func (s *FileSet) GlobalSize() Counts {
|
2018-07-12 10:15:57 +02:00
|
|
|
global := s.meta.Counts(protocol.GlobalDeviceID, 0)
|
|
|
|
recvOnlyChanged := s.meta.Counts(protocol.GlobalDeviceID, protocol.FlagLocalReceiveOnly)
|
|
|
|
return global.Add(recvOnlyChanged)
|
2015-10-21 09:10:26 +02:00
|
|
|
}
|
|
|
|
|
2016-07-23 14:46:31 +02:00
|
|
|
func (s *FileSet) IndexID(device protocol.DeviceID) protocol.IndexID {
|
|
|
|
id := s.db.getIndexID(device[:], []byte(s.folder))
|
|
|
|
if id == 0 && device == protocol.LocalDeviceID {
|
|
|
|
// No index ID set yet. We create one now.
|
|
|
|
id = protocol.NewIndexID()
|
|
|
|
s.db.setIndexID(device[:], []byte(s.folder), id)
|
|
|
|
}
|
|
|
|
return id
|
|
|
|
}
|
|
|
|
|
|
|
|
func (s *FileSet) SetIndexID(device protocol.DeviceID, id protocol.IndexID) {
|
|
|
|
if device == protocol.LocalDeviceID {
|
|
|
|
panic("do not explicitly set index ID for local device")
|
|
|
|
}
|
|
|
|
s.db.setIndexID(device[:], []byte(s.folder), id)
|
|
|
|
}
|
|
|
|
|
2016-08-05 19:45:45 +02:00
|
|
|
func (s *FileSet) MtimeFS() *fs.MtimeFS {
|
|
|
|
prefix := s.db.mtimesKey([]byte(s.folder))
|
|
|
|
kv := NewNamespacedKV(s.db, string(prefix))
|
2017-08-19 16:36:56 +02:00
|
|
|
return fs.NewMtimeFS(s.fs, kv)
|
2016-08-05 19:45:45 +02:00
|
|
|
}
|
|
|
|
|
2016-08-07 18:21:59 +02:00
|
|
|
func (s *FileSet) ListDevices() []protocol.DeviceID {
|
2017-12-14 10:51:17 +01:00
|
|
|
return s.meta.devices()
|
2016-07-23 14:46:31 +02:00
|
|
|
}
|
|
|
|
|
2014-09-28 13:00:38 +02:00
|
|
|
// DropFolder clears out all information related to the given folder from the
|
2014-08-31 13:34:17 +02:00
|
|
|
// database.
|
2015-10-31 12:31:25 +01:00
|
|
|
func DropFolder(db *Instance, folder string) {
|
|
|
|
db.dropFolder([]byte(folder))
|
2016-08-05 19:45:45 +02:00
|
|
|
db.dropMtimes([]byte(folder))
|
2017-12-14 10:51:17 +01:00
|
|
|
db.dropFolderMeta([]byte(folder))
|
2014-10-07 23:15:01 +02:00
|
|
|
bm := &BlockMap{
|
|
|
|
db: db,
|
2016-01-03 19:08:19 +01:00
|
|
|
folder: db.folderIdx.ID([]byte(folder)),
|
2014-10-07 23:15:01 +02:00
|
|
|
}
|
|
|
|
bm.Drop()
|
2014-08-31 13:34:17 +02:00
|
|
|
}
|
|
|
|
|
2014-08-15 12:52:16 +02:00
|
|
|
func normalizeFilenames(fs []protocol.FileInfo) {
|
|
|
|
for i := range fs {
|
2014-11-06 00:41:51 +01:00
|
|
|
fs[i].Name = osutil.NormalizedFilename(fs[i].Name)
|
2014-08-15 12:52:16 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-01-09 08:18:42 +01:00
|
|
|
func nativeFileIterator(fn Iterator) Iterator {
|
|
|
|
return func(fi FileIntf) bool {
|
2014-08-15 12:52:16 +02:00
|
|
|
switch f := fi.(type) {
|
|
|
|
case protocol.FileInfo:
|
2014-11-06 00:41:51 +01:00
|
|
|
f.Name = osutil.NativeFilename(f.Name)
|
2014-08-15 12:52:16 +02:00
|
|
|
return fn(f)
|
2015-01-09 08:19:32 +01:00
|
|
|
case FileInfoTruncated:
|
2014-11-06 00:41:51 +01:00
|
|
|
f.Name = osutil.NativeFilename(f.Name)
|
2014-08-15 12:52:16 +02:00
|
|
|
return fn(f)
|
|
|
|
default:
|
|
|
|
panic("unknown interface type")
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|