package archiver import ( "context" "io" "time" "github.com/restic/restic/internal" "github.com/restic/restic/internal/debug" "github.com/restic/restic/internal/errors" "github.com/restic/chunker" ) // Reader allows saving a stream of data to the repository. type Reader struct { restic.Repository Tags []string Hostname string } // Archive reads data from the reader and saves it to the repo. func (r *Reader) Archive(ctx context.Context, name string, rd io.Reader, p *restic.Progress) (*restic.Snapshot, restic.ID, error) { if name == "" { return nil, restic.ID{}, errors.New("no filename given") } debug.Log("start archiving %s", name) sn, err := restic.NewSnapshot([]string{name}, r.Tags, r.Hostname) if err != nil { return nil, restic.ID{}, err } p.Start() defer p.Done() repo := r.Repository chnker := chunker.New(rd, repo.Config().ChunkerPolynomial) ids := restic.IDs{} var fileSize uint64 for { chunk, err := chnker.Next(getBuf()) if errors.Cause(err) == io.EOF { break } if err != nil { return nil, restic.ID{}, errors.Wrap(err, "chunker.Next()") } id := restic.Hash(chunk.Data) if !repo.Index().Has(id, restic.DataBlob) { _, err := repo.SaveBlob(ctx, restic.DataBlob, chunk.Data, id) if err != nil { return nil, restic.ID{}, err } debug.Log("saved blob %v (%d bytes)\n", id.Str(), chunk.Length) } else { debug.Log("blob %v already saved in the repo\n", id.Str()) } freeBuf(chunk.Data) ids = append(ids, id) p.Report(restic.Stat{Bytes: uint64(chunk.Length)}) fileSize += uint64(chunk.Length) } tree := &restic.Tree{ Nodes: []*restic.Node{ { Name: name, AccessTime: time.Now(), ModTime: time.Now(), Type: "file", Mode: 0644, Size: fileSize, UID: sn.UID, GID: sn.GID, User: sn.Username, Content: ids, }, }, } treeID, err := repo.SaveTree(ctx, tree) if err != nil { return nil, restic.ID{}, err } sn.Tree = &treeID debug.Log("tree saved as %v", treeID.Str()) id, err := repo.SaveJSONUnpacked(ctx, restic.SnapshotFile, sn) if err != nil { return nil, restic.ID{}, err } debug.Log("snapshot saved as %v", id.Str()) err = repo.Flush() if err != nil { return nil, restic.ID{}, err } err = repo.SaveIndex(ctx) if err != nil { return nil, restic.ID{}, err } return sn, id, nil }