package backup import ( "sync" "time" "github.com/restic/restic/internal/archiver" "github.com/restic/restic/internal/restic" "github.com/restic/restic/internal/ui/progress" ) // A ProgressPrinter can print various progress messages. // It must be safe to call its methods from concurrent goroutines. type ProgressPrinter interface { Update(total, processed Counter, errors uint, currentFiles map[string]struct{}, start time.Time, secs uint64) Error(item string, err error) error ScannerError(item string, err error) error CompleteItem(messageType string, item string, s archiver.ItemStats, d time.Duration) ReportTotal(start time.Time, s archiver.ScanStats) Finish(snapshotID restic.ID, start time.Time, summary *archiver.Summary, dryRun bool) Reset() P(msg string, args ...interface{}) V(msg string, args ...interface{}) } type Counter struct { Files, Dirs, Bytes uint64 } // Progress reports progress for the `backup` command. type Progress struct { progress.Updater mu sync.Mutex start time.Time estimator rateEstimator scanStarted, scanFinished bool currentFiles map[string]struct{} processed, total Counter errors uint printer ProgressPrinter } func NewProgress(printer ProgressPrinter, interval time.Duration) *Progress { p := &Progress{ start: time.Now(), currentFiles: make(map[string]struct{}), printer: printer, estimator: *newRateEstimator(time.Now()), } p.Updater = *progress.NewUpdater(interval, func(_ time.Duration, final bool) { if final { p.printer.Reset() } else { p.mu.Lock() defer p.mu.Unlock() if !p.scanStarted { return } var secondsRemaining uint64 if p.scanFinished { rate := p.estimator.rate(time.Now()) tooSlowCutoff := 1024. if rate <= tooSlowCutoff { secondsRemaining = 0 } else { todo := float64(p.total.Bytes - p.processed.Bytes) secondsRemaining = uint64(todo / rate) } } p.printer.Update(p.total, p.processed, p.errors, p.currentFiles, p.start, secondsRemaining) } }) return p } // Error is the error callback function for the archiver, it prints the error and returns nil. func (p *Progress) Error(item string, err error) error { p.mu.Lock() p.errors++ p.scanStarted = true p.mu.Unlock() return p.printer.Error(item, err) } // StartFile is called when a file is being processed by a worker. func (p *Progress) StartFile(filename string) { p.mu.Lock() defer p.mu.Unlock() p.currentFiles[filename] = struct{}{} } func (p *Progress) addProcessed(c Counter) { p.processed.Files += c.Files p.processed.Dirs += c.Dirs p.processed.Bytes += c.Bytes p.estimator.recordBytes(time.Now(), c.Bytes) p.scanStarted = true } // CompleteBlob is called for all saved blobs for files. func (p *Progress) CompleteBlob(bytes uint64) { p.mu.Lock() p.addProcessed(Counter{Bytes: bytes}) p.mu.Unlock() } // CompleteItem is the status callback function for the archiver when a // file/dir has been saved successfully. func (p *Progress) CompleteItem(item string, previous, current *restic.Node, s archiver.ItemStats, d time.Duration) { if current == nil { // error occurred, tell the status display to remove the line p.mu.Lock() delete(p.currentFiles, item) p.mu.Unlock() return } switch current.Type { case "dir": p.mu.Lock() p.addProcessed(Counter{Dirs: 1}) p.mu.Unlock() switch { case previous == nil: p.printer.CompleteItem("dir new", item, s, d) case previous.Equals(*current): p.printer.CompleteItem("dir unchanged", item, s, d) default: p.printer.CompleteItem("dir modified", item, s, d) } case "file": p.mu.Lock() p.addProcessed(Counter{Files: 1}) delete(p.currentFiles, item) p.mu.Unlock() switch { case previous == nil: p.printer.CompleteItem("file new", item, s, d) case previous.Equals(*current): p.printer.CompleteItem("file unchanged", item, s, d) default: p.printer.CompleteItem("file modified", item, s, d) } } } // ReportTotal sets the total stats up to now func (p *Progress) ReportTotal(item string, s archiver.ScanStats) { p.mu.Lock() defer p.mu.Unlock() p.total = Counter{Files: uint64(s.Files), Dirs: uint64(s.Dirs), Bytes: s.Bytes} p.scanStarted = true if item == "" { p.scanFinished = true p.printer.ReportTotal(p.start, s) } } // Finish prints the finishing messages. func (p *Progress) Finish(snapshotID restic.ID, summary *archiver.Summary, dryrun bool) { // wait for the status update goroutine to shut down p.Updater.Done() p.printer.Finish(snapshotID, p.start, summary, dryrun) }