101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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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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// You can obtain one at http://mozilla.org/MPL/2.0/.
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package model
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import (
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"fmt"
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"time"
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"github.com/syncthing/syncthing/lib/config"
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"github.com/syncthing/syncthing/lib/sync"
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"github.com/syncthing/syncthing/lib/versioner"
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)
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func init() {
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folderFactories[config.FolderTypeReadOnly] = newROFolder
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}
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type roFolder struct {
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folder
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}
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func newROFolder(model *Model, cfg config.FolderConfiguration, ver versioner.Versioner) service {
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return &roFolder{
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folder: folder{
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stateTracker: stateTracker{
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folderID: cfg.ID,
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mut: sync.NewMutex(),
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},
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scan: folderscan{
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interval: time.Duration(cfg.RescanIntervalS) * time.Second,
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timer: time.NewTimer(time.Millisecond),
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now: make(chan rescanRequest),
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delay: make(chan time.Duration),
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},
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stop: make(chan struct{}),
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model: model,
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},
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}
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}
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func (f *roFolder) Serve() {
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l.Debugln(f, "starting")
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defer l.Debugln(f, "exiting")
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defer func() {
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f.scan.timer.Stop()
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}()
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initialScanCompleted := false
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for {
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select {
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case <-f.stop:
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return
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case <-f.scan.timer.C:
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if err := f.model.CheckFolderHealth(f.folderID); err != nil {
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l.Infoln("Skipping folder", f.folderID, "scan due to folder error:", err)
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f.scan.reschedule()
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continue
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}
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l.Debugln(f, "rescan")
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if err := f.model.internalScanFolderSubdirs(f.folderID, nil); err != nil {
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// Potentially sets the error twice, once in the scanner just
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// by doing a check, and once here, if the error returned is
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// the same one as returned by CheckFolderHealth, though
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// duplicate set is handled by setError.
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f.setError(err)
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f.scan.reschedule()
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continue
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}
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if !initialScanCompleted {
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l.Infoln("Completed initial scan (ro) of folder", f.folderID)
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initialScanCompleted = true
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}
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if f.scan.interval == 0 {
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continue
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}
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f.scan.reschedule()
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case req := <-f.scan.now:
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req.err <- f.scanSubdirsIfHealthy(req.subdirs)
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case next := <-f.scan.delay:
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f.scan.timer.Reset(next)
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}
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}
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}
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func (f *roFolder) String() string {
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return fmt.Sprintf("roFolder/%s@%p", f.folderID, f)
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}
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