78 lines
1.5 KiB
Go
78 lines
1.5 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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"math/rand"
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"time"
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)
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type Scanner struct {
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folder string
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intv time.Duration
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model *Model
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stop chan struct{}
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}
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func (s *Scanner) Serve() {
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if debug {
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l.Debugln(s, "starting")
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defer l.Debugln(s, "exiting")
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}
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timer := time.NewTimer(time.Millisecond)
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defer timer.Stop()
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initialScanCompleted := false
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for {
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select {
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case <-s.stop:
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return
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case <-timer.C:
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if debug {
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l.Debugln(s, "rescan")
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}
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s.model.setState(s.folder, FolderScanning)
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if err := s.model.ScanFolder(s.folder); err != nil {
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s.model.cfg.InvalidateFolder(s.folder, err.Error())
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return
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}
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s.model.setState(s.folder, FolderIdle)
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if !initialScanCompleted {
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l.Infoln("Completed initial scan (ro) of folder", s.folder)
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initialScanCompleted = true
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}
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if s.intv == 0 {
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return
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}
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// Sleep a random time between 3/4 and 5/4 of the configured interval.
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sleepNanos := (s.intv.Nanoseconds()*3 + rand.Int63n(2*s.intv.Nanoseconds())) / 4
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timer.Reset(time.Duration(sleepNanos) * time.Nanosecond)
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}
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}
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}
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func (s *Scanner) Stop() {
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close(s.stop)
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}
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func (s *Scanner) String() string {
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return fmt.Sprintf("scanner/%s@%p", s.folder, s)
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}
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func (s *Scanner) BringToFront(string) {}
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func (s *Scanner) Jobs() ([]string, []string) {
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return nil, nil
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}
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