// repackBlob loads a single blob from src and saves it in dst.
func repackBlob(src, dst *repository.Repository, id backend.ID) error {
blob, err := src.Index().Lookup(id)
if err != nil {
return err
}
debug.Log("RepackBlobs", "repacking blob %v, len %v", id.Str(), blob.PlaintextLength())
buf := make([]byte, 0, blob.PlaintextLength())
buf, err = src.LoadBlob(blob.Type, id, buf)
if err != nil {
return err
}
if uint(len(buf)) != blob.PlaintextLength() {
debug.Log("RepackBlobs", "repack blob %v: len(buf) isn't equal to length: %v = %v", id.Str(), len(buf), blob.PlaintextLength())
return errors.New("LoadBlob returned wrong data, len() doesn't match")
}
_, err = dst.SaveAndEncrypt(blob.Type, buf, &id)
if err != nil {
return err
}
return nil
}
// saveRandomDataBlobs generates random data blobs and saves them to the repository.
func saveRandomDataBlobs(t testing.TB, repo *repository.Repository, num int, sizeMax int) {
for i := 0; i < num; i++ {
size := mrand.Int() % sizeMax
buf := make([]byte, size)
_, err := io.ReadFull(rand.Reader, buf)
OK(t, err)
_, err = repo.SaveAndEncrypt(pack.Data, buf, nil)
OK(t, err)
}
}
// saveFile reads from rd and saves the blobs in the repository. The list of
// IDs is returned.
func saveFile(t testing.TB, repo *repository.Repository, rd io.Reader) (blobs backend.IDs) {
ch := chunker.New(rd, repo.Config.ChunkerPolynomial)
for {
chunk, err := ch.Next(getBuf())
if err == io.EOF {
break
}
if err != nil {
t.Fatalf("unabel to save chunk in repo: %v", err)
}
id, err := repo.SaveAndEncrypt(pack.Data, chunk.Data, nil)
if err != nil {
t.Fatalf("error saving chunk: %v", err)
}
blobs = append(blobs, id)
}
return blobs
}
// ArchiveReader reads from the reader and archives the data. Returned is the
// resulting snapshot and its ID.
func ArchiveReader(repo *repository.Repository, p *Progress, rd io.Reader, name string) (*Snapshot, backend.ID, error) {
debug.Log("ArchiveReader", "start archiving %s", name)
sn, err := NewSnapshot([]string{name})
if err != nil {
return nil, backend.ID{}, err
}
p.Start()
defer p.Done()
chnker := chunker.New(rd, repo.Config.ChunkerPolynomial)
var ids backend.IDs
var fileSize uint64
for {
chunk, err := chnker.Next(getBuf())
if err == io.EOF {
break
}
if err != nil {
return nil, backend.ID{}, err
}
id := backend.Hash(chunk.Data)
if !repo.Index().Has(id) {
_, err := repo.SaveAndEncrypt(pack.Data, chunk.Data, nil)
if err != nil {
return nil, backend.ID{}, err
}
debug.Log("ArchiveReader", "saved blob %v (%d bytes)\n", id.Str(), chunk.Length)
} else {
debug.Log("ArchiveReader", "blob %v already saved in the repo\n", id.Str())
}
freeBuf(chunk.Data)
ids = append(ids, id)
p.Report(Stat{Bytes: uint64(chunk.Length)})
fileSize += uint64(chunk.Length)
}
tree := &Tree{
Nodes: []*Node{
&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 := saveTreeJSON(repo, tree)
if err != nil {
return nil, backend.ID{}, err
}
sn.Tree = &treeID
debug.Log("ArchiveReader", "tree saved as %v", treeID.Str())
id, err := repo.SaveJSONUnpacked(backend.Snapshot, sn)
if err != nil {
return nil, backend.ID{}, err
}
sn.id = &id
debug.Log("ArchiveReader", "snapshot saved as %v", id.Str())
err = repo.Flush()
if err != nil {
return nil, backend.ID{}, err
}
err = repo.SaveIndex()
if err != nil {
return nil, backend.ID{}, err
}
return sn, id, nil
}