mirror of
https://github.com/octoleo/syncthing.git
synced 2024-12-23 03:18:59 +00:00
110 lines
2.0 KiB
Go
110 lines
2.0 KiB
Go
// 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,
|
|
// You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
//go:generate -command genxdr go run ../../vendor/github.com/calmh/xdr/cmd/genxdr/main.go
|
|
//go:generate genxdr -o leveldb_xdr.go leveldb.go
|
|
|
|
package db
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
|
|
"github.com/syncthing/syncthing/lib/protocol"
|
|
"github.com/syncthing/syncthing/lib/sync"
|
|
"github.com/syndtr/goleveldb/leveldb"
|
|
"github.com/syndtr/goleveldb/leveldb/opt"
|
|
)
|
|
|
|
var (
|
|
clockTick int64
|
|
clockMut = sync.NewMutex()
|
|
)
|
|
|
|
func clock(v int64) int64 {
|
|
clockMut.Lock()
|
|
defer clockMut.Unlock()
|
|
if v > clockTick {
|
|
clockTick = v + 1
|
|
} else {
|
|
clockTick++
|
|
}
|
|
return clockTick
|
|
}
|
|
|
|
const (
|
|
KeyTypeDevice = iota
|
|
KeyTypeGlobal
|
|
KeyTypeBlock
|
|
KeyTypeDeviceStatistic
|
|
KeyTypeFolderStatistic
|
|
KeyTypeVirtualMtime
|
|
KeyTypeFolderIdx
|
|
KeyTypeDeviceIdx
|
|
)
|
|
|
|
type fileVersion struct {
|
|
version protocol.Vector
|
|
device []byte
|
|
}
|
|
|
|
type VersionList struct {
|
|
versions []fileVersion
|
|
}
|
|
|
|
func (l VersionList) String() string {
|
|
var b bytes.Buffer
|
|
var id protocol.DeviceID
|
|
b.WriteString("{")
|
|
for i, v := range l.versions {
|
|
if i > 0 {
|
|
b.WriteString(", ")
|
|
}
|
|
copy(id[:], v.device)
|
|
fmt.Fprintf(&b, "{%d, %v}", v.version, id)
|
|
}
|
|
b.WriteString("}")
|
|
return b.String()
|
|
}
|
|
|
|
type fileList []protocol.FileInfo
|
|
|
|
func (l fileList) Len() int {
|
|
return len(l)
|
|
}
|
|
|
|
func (l fileList) Swap(a, b int) {
|
|
l[a], l[b] = l[b], l[a]
|
|
}
|
|
|
|
func (l fileList) Less(a, b int) bool {
|
|
return l[a].Name < l[b].Name
|
|
}
|
|
|
|
type dbReader interface {
|
|
Get([]byte, *opt.ReadOptions) ([]byte, error)
|
|
}
|
|
|
|
// Flush batches to disk when they contain this many records.
|
|
const batchFlushSize = 64
|
|
|
|
func getFile(db dbReader, key []byte) (protocol.FileInfo, bool) {
|
|
bs, err := db.Get(key, nil)
|
|
if err == leveldb.ErrNotFound {
|
|
return protocol.FileInfo{}, false
|
|
}
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
var f protocol.FileInfo
|
|
err = f.UnmarshalXDR(bs)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return f, true
|
|
}
|