66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
package main
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import (
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"golang.org/x/sync/errgroup"
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"github.com/restic/restic/internal/restic"
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)
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// DeleteFiles deletes the given fileList of fileType in parallel
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// it will print a warning if there is an error, but continue deleting the remaining files
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func DeleteFiles(gopts GlobalOptions, repo restic.Repository, fileList restic.IDSet, fileType restic.FileType) {
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_ = deleteFiles(gopts, true, repo, fileList, fileType)
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}
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// DeleteFilesChecked deletes the given fileList of fileType in parallel
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// if an error occurs, it will cancel and return this error
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func DeleteFilesChecked(gopts GlobalOptions, repo restic.Repository, fileList restic.IDSet, fileType restic.FileType) error {
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return deleteFiles(gopts, false, repo, fileList, fileType)
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}
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const numDeleteWorkers = 8
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// deleteFiles deletes the given fileList of fileType in parallel
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// if ignoreError=true, it will print a warning if there was an error, else it will abort.
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func deleteFiles(gopts GlobalOptions, ignoreError bool, repo restic.Repository, fileList restic.IDSet, fileType restic.FileType) error {
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totalCount := len(fileList)
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fileChan := make(chan restic.ID)
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wg, ctx := errgroup.WithContext(gopts.ctx)
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wg.Go(func() error {
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defer close(fileChan)
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for id := range fileList {
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select {
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case fileChan <- id:
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case <-ctx.Done():
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return ctx.Err()
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}
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}
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return nil
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})
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bar := newProgressMax(!gopts.JSON && !gopts.Quiet, uint64(totalCount), "files deleted")
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defer bar.Done()
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for i := 0; i < numDeleteWorkers; i++ {
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wg.Go(func() error {
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for id := range fileChan {
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h := restic.Handle{Type: fileType, Name: id.String()}
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err := repo.Backend().Remove(ctx, h)
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if err != nil {
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if !gopts.JSON {
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Warnf("unable to remove %v from the repository\n", h)
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}
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if !ignoreError {
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return err
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}
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}
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if !gopts.JSON && gopts.verbosity > 2 {
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Verbosef("removed %v\n", h)
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}
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bar.Add(1)
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}
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return nil
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})
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}
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err := wg.Wait()
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return err
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}
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