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Merge pull request #392 from restic/fix-build
Allow saving duplicate blobs in the repacker
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commit
4d7e802c44
@ -136,7 +136,7 @@ func repackBlob(src, dst *repository.Repository, id backend.ID) error {
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return errors.New("LoadBlob returned wrong data, len() doesn't match")
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}
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_, err = dst.SaveAndEncrypt(blob.Type, buf, &id)
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_, err = dst.SaveAndEncrypt(blob.Type, buf, &id, true)
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if err != nil {
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return err
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}
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@ -133,7 +133,6 @@ func TestLargeEncrypt(t *testing.T) {
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func BenchmarkEncryptWriter(b *testing.B) {
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size := 8 << 20 // 8MiB
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rd := RandomReader(23, size)
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k := crypto.NewRandomKey()
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@ -141,7 +140,7 @@ func BenchmarkEncryptWriter(b *testing.B) {
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b.SetBytes(int64(size))
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for i := 0; i < b.N; i++ {
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rd.Seek(0, 0)
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rd := RandomReader(23, size)
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wr := crypto.EncryptTo(k, ioutil.Discard)
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n, err := io.Copy(wr, rd)
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OK(b, err)
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@ -195,14 +194,13 @@ func BenchmarkEncryptDecryptReader(b *testing.B) {
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k := crypto.NewRandomKey()
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size := 8 << 20 // 8MiB
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rd := RandomReader(23, size)
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b.ResetTimer()
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b.SetBytes(int64(size))
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buf := bytes.NewBuffer(nil)
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for i := 0; i < b.N; i++ {
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rd.Seek(0, 0)
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rd := RandomReader(23, size)
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buf.Reset()
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wr := crypto.EncryptTo(k, buf)
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_, err := io.Copy(wr, rd)
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@ -155,49 +155,55 @@ func (mi *MasterIndex) Current() *Index {
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}
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// AddInFlight add the given ID to the list of in-flight IDs. An error is
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// returned when the ID is already in the list.
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func (mi *MasterIndex) AddInFlight(id backend.ID) error {
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// The index + inFlight store must be searched for a matching id in one
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// atomic operation. This requires locking the inFlight store and the
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// index together!
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mi.inFlight.Lock()
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defer mi.inFlight.Unlock()
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// returned when the ID is already in the list. Setting ignoreDuplicates to
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// true only checks the in flight list, otherwise the index itself is also
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// tested.
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func (mi *MasterIndex) AddInFlight(id backend.ID, ignoreDuplicates bool) error {
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// The index + inFlight store must be searched for a matching id in one
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// atomic operation. This requires locking the inFlight store and the
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// index together!
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mi.inFlight.Lock()
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defer mi.inFlight.Unlock()
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// Note: mi.Has read locks the index again.
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mi.idxMutex.RLock()
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defer mi.idxMutex.RUnlock()
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if !ignoreDuplicates {
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// Note: mi.Has read locks the index again.
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mi.idxMutex.RLock()
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defer mi.idxMutex.RUnlock()
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}
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debug.Log("MasterIndex.AddInFlight", "adding %v", id)
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if mi.inFlight.Has(id) {
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return fmt.Errorf("%v is already in flight", id)
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}
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if mi.Has(id) {
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return fmt.Errorf("%v is already indexed (fully processed)", id)
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}
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debug.Log("MasterIndex.AddInFlight", "adding %v", id.Str())
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if mi.inFlight.Has(id) {
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return fmt.Errorf("%v is already in flight", id.Str())
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}
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mi.inFlight.Insert(id)
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return nil
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if !ignoreDuplicates {
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if mi.Has(id) {
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return fmt.Errorf("%v is already indexed (fully processed)", id)
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}
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}
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mi.inFlight.Insert(id)
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return nil
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}
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// IsInFlight returns true iff the id is contained in the list of in-flight IDs.
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func (mi *MasterIndex) IsInFlight(id backend.ID) bool {
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// The index + inFlight store must be searched for a matching id in one
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// atomic operation. This requires locking the inFlight store and the
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// index together!
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mi.inFlight.RLock()
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defer mi.inFlight.RUnlock()
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// The index + inFlight store must be searched for a matching id in one
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// atomic operation. This requires locking the inFlight store and the
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// index together!
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mi.inFlight.RLock()
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defer mi.inFlight.RUnlock()
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// Note: mi.Has read locks the index again.
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mi.idxMutex.RLock()
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defer mi.idxMutex.RUnlock()
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mi.idxMutex.RLock()
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defer mi.idxMutex.RUnlock()
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inFlight := mi.inFlight.Has(id)
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debug.Log("MasterIndex.IsInFlight", "testing whether %v is in flight: %v", id.Str(), inFlight)
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inFlight := mi.inFlight.Has(id)
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debug.Log("MasterIndex.IsInFlight", "testing whether %v is in flight: %v", id.Str(), inFlight)
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indexed := mi.Has(id)
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debug.Log("MasterIndex.IsInFlight", "testing whether %v is indexed (fully processed): %v", id.Str(), indexed)
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indexed := mi.Has(id)
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debug.Log("MasterIndex.IsInFlight", "testing whether %v is indexed (fully processed): %v", id.Str(), indexed)
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return inFlight
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return inFlight
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}
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// RemoveFromInFlight deletes the given ID from the liste of in-flight IDs.
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@ -219,8 +219,9 @@ func (r *Repository) LookupBlobSize(id backend.ID) (uint, error) {
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}
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// SaveAndEncrypt encrypts data and stores it to the backend as type t. If data is small
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// enough, it will be packed together with other small blobs.
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func (r *Repository) SaveAndEncrypt(t pack.BlobType, data []byte, id *backend.ID) (backend.ID, error) {
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// enough, it will be packed together with other small blobs. When
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// ignoreDuplicates is true, blobs already in the index will be saved again.
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func (r *Repository) SaveAndEncrypt(t pack.BlobType, data []byte, id *backend.ID, ignoreDuplicates bool) (backend.ID, error) {
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if id == nil {
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// compute plaintext hash
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hashedID := backend.Hash(data)
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@ -241,7 +242,7 @@ func (r *Repository) SaveAndEncrypt(t pack.BlobType, data []byte, id *backend.ID
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// add this id to the list of in-flight chunk ids.
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debug.Log("Repo.Save", "add %v to list of in-flight IDs", id.Str())
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err = r.idx.AddInFlight(*id)
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err = r.idx.AddInFlight(*id, ignoreDuplicates)
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if err != nil {
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debug.Log("Repo.Save", "another goroutine is already working on %v (%v) does already exist", id.Str, t)
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return *id, nil
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@ -284,7 +285,7 @@ func (r *Repository) SaveFrom(t pack.BlobType, id *backend.ID, length uint, rd i
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return err
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}
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_, err = r.SaveAndEncrypt(t, buf, id)
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_, err = r.SaveAndEncrypt(t, buf, id, false)
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if err != nil {
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return err
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}
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@ -308,7 +309,7 @@ func (r *Repository) SaveJSON(t pack.BlobType, item interface{}) (backend.ID, er
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}
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buf = wr.Bytes()
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return r.SaveAndEncrypt(t, buf, nil)
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return r.SaveAndEncrypt(t, buf, nil, false)
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}
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// SaveJSONUnpacked serialises item as JSON and encrypts and saves it in the
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@ -83,7 +83,7 @@ func TestSave(t *testing.T) {
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id := backend.Hash(data)
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// save
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sid, err := repo.SaveAndEncrypt(pack.Data, data, nil)
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sid, err := repo.SaveAndEncrypt(pack.Data, data, nil, false)
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OK(t, err)
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Equals(t, id, sid)
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@ -253,7 +253,7 @@ func saveRandomDataBlobs(t testing.TB, repo *repository.Repository, num int, siz
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_, err := io.ReadFull(rand.Reader, buf)
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OK(t, err)
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_, err = repo.SaveAndEncrypt(pack.Data, buf, nil)
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_, err = repo.SaveAndEncrypt(pack.Data, buf, nil, false)
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OK(t, err)
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}
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}
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@ -90,7 +90,6 @@ type rndReader struct {
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}
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func (r *rndReader) Read(p []byte) (int, error) {
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fmt.Printf("Read(%v)\n", len(p))
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for i := range p {
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p[i] = byte(r.src.Uint32())
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}
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