Golang Repository.Index方法代码示例

func findPacksForBlobs(t *testing.T, repo restic.Repository, blobs restic.BlobSet) restic.IDSet {
	packs := restic.NewIDSet()

	idx := repo.Index()
	for h := range blobs {
		list, err := idx.Lookup(h.ID, h.Type)
		if err != nil {
			t.Fatal(err)
		}

		for _, pb := range list {
			packs.Insert(pb.PackID)
		}
	}

	return packs
}

func createRandomBlobs(t testing.TB, repo restic.Repository, blobs int, pData float32) {
	for i := 0; i < blobs; i++ {
		var (
			tpe    restic.BlobType
			length int
		)

		if rand.Float32() < pData {
			tpe = restic.DataBlob
			length = randomSize(10*1024, 1024*1024) // 10KiB to 1MiB of data
		} else {
			tpe = restic.TreeBlob
			length = randomSize(1*1024, 20*1024) // 1KiB to 20KiB
		}

		buf := random(t, length)
		id := restic.Hash(buf)

		if repo.Index().Has(id, restic.DataBlob) {
			t.Errorf("duplicate blob %v/%v ignored", id, restic.DataBlob)
			continue
		}

		_, err := repo.SaveBlob(tpe, buf, id)
		if err != nil {
			t.Fatalf("SaveFrom() error %v", err)
		}

		if rand.Float32() < 0.2 {
			if err = repo.Flush(); err != nil {
				t.Fatalf("repo.Flush() returned error %v", err)
			}
		}
	}

	if err := repo.Flush(); err != nil {
		t.Fatalf("repo.Flush() returned error %v", err)
	}
}

// ArchiveReader reads from the reader and archives the data. Returned is the
// resulting snapshot and its ID.
func ArchiveReader(repo restic.Repository, p *restic.Progress, rd io.Reader, name string, tags []string) (*restic.Snapshot, restic.ID, error) {
	debug.Log("start archiving %s", name)
	sn, err := restic.NewSnapshot([]string{name}, tags)
	if err != nil {
		return nil, restic.ID{}, err
	}

	p.Start()
	defer p.Done()

	chnker := chunker.New(rd, repo.Config().ChunkerPolynomial)

	var 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(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{
			&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(tree)
	if err != nil {
		return nil, restic.ID{}, err
	}
	sn.Tree = &treeID
	debug.Log("tree saved as %v", treeID.Str())

	id, err := repo.SaveJSONUnpacked(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()
	if err != nil {
		return nil, restic.ID{}, err
	}

	return sn, id, nil
}