124 lines
3.1 KiB
Go
124 lines
3.1 KiB
Go
// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
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// All rights reserved. Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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// Package files provides a set type to track local/remote files with newness checks.
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package files
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import (
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"sync"
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"github.com/calmh/syncthing/lamport"
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"github.com/calmh/syncthing/protocol"
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"github.com/syndtr/goleveldb/leveldb"
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)
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type fileRecord struct {
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File protocol.FileInfo
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Usage int
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Global bool
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}
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type bitset uint64
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type Set struct {
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localVersion map[protocol.NodeID]uint64
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mutex sync.Mutex
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repo string
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db *leveldb.DB
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}
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func NewSet(repo string, db *leveldb.DB) *Set {
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var s = Set{
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localVersion: make(map[protocol.NodeID]uint64),
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repo: repo,
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db: db,
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}
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var nodeID protocol.NodeID
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ldbWithAllRepo(db, []byte(repo), func(node []byte, f protocol.FileInfo) bool {
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copy(nodeID[:], node)
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if f.LocalVersion > s.localVersion[nodeID] {
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s.localVersion[nodeID] = f.LocalVersion
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}
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lamport.Default.Tick(f.Version)
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return true
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})
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if debug {
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l.Debugf("loaded localVersion for %q: %#v", repo, s.localVersion)
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}
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clock(s.localVersion[protocol.LocalNodeID])
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return &s
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}
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func (s *Set) Replace(node protocol.NodeID, fs []protocol.FileInfo) {
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if debug {
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l.Debugf("%s Replace(%v, [%d])", s.repo, node, len(fs))
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}
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s.mutex.Lock()
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defer s.mutex.Unlock()
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s.localVersion[node] = ldbReplace(s.db, []byte(s.repo), node[:], fs)
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}
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func (s *Set) ReplaceWithDelete(node protocol.NodeID, fs []protocol.FileInfo) {
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if debug {
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l.Debugf("%s ReplaceWithDelete(%v, [%d])", s.repo, node, len(fs))
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}
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s.mutex.Lock()
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defer s.mutex.Unlock()
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if lv := ldbReplaceWithDelete(s.db, []byte(s.repo), node[:], fs); lv > s.localVersion[node] {
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s.localVersion[node] = lv
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}
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}
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func (s *Set) Update(node protocol.NodeID, fs []protocol.FileInfo) {
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if debug {
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l.Debugf("%s Update(%v, [%d])", s.repo, node, len(fs))
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}
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s.mutex.Lock()
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defer s.mutex.Unlock()
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if lv := ldbUpdate(s.db, []byte(s.repo), node[:], fs); lv > s.localVersion[node] {
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s.localVersion[node] = lv
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}
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}
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func (s *Set) WithNeed(node protocol.NodeID, fn fileIterator) {
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if debug {
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l.Debugf("%s Need(%v)", s.repo, node)
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}
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ldbWithNeed(s.db, []byte(s.repo), node[:], fn)
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}
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func (s *Set) WithHave(node protocol.NodeID, fn fileIterator) {
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if debug {
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l.Debugf("%s WithHave(%v)", s.repo, node)
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}
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ldbWithHave(s.db, []byte(s.repo), node[:], fn)
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}
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func (s *Set) WithGlobal(fn fileIterator) {
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if debug {
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l.Debugf("%s WithGlobal()", s.repo)
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}
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ldbWithGlobal(s.db, []byte(s.repo), fn)
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}
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func (s *Set) Get(node protocol.NodeID, file string) protocol.FileInfo {
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return ldbGet(s.db, []byte(s.repo), node[:], []byte(file))
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}
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func (s *Set) GetGlobal(file string) protocol.FileInfo {
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return ldbGetGlobal(s.db, []byte(s.repo), []byte(file))
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}
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func (s *Set) Availability(file string) []protocol.NodeID {
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return ldbAvailability(s.db, []byte(s.repo), []byte(file))
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}
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func (s *Set) LocalVersion(node protocol.NodeID) uint64 {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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return s.localVersion[node]
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}
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