Add pack size to ListAllPacks

src/restic/index/index.go

@@ -13,6 +13,7 @@ import (
 
 // Pack contains information about the contents of a pack.
 type Pack struct {
+	Size    int64
 	Entries []pack.Blob
 }
 
@@ -51,7 +52,7 @@ func New(repo *repository.Repository) (*Index, error) {
 		if _, ok := idx.Packs[packID]; ok {
 			return nil, fmt.Errorf("pack %v processed twice", packID.Str())
 		}
-		p := Pack{Entries: j.Entries}
+		p := Pack{Entries: j.Entries, Size: j.Size}
 		idx.Packs[packID] = p
 	}
 

src/restic/repository/index_rebuild.go

@@ -14,6 +14,7 @@ const rebuildIndexWorkers = 10
 // ListAllPacksResult is returned in the channel from LoadBlobsFromAllPacks.
 type ListAllPacksResult struct {
 	PackID  backend.ID
+	Size    int64
 	Entries []pack.Blob
 }
 
@@ -21,9 +22,11 @@ type ListAllPacksResult struct {
 func ListAllPacks(repo *Repository, ch chan<- worker.Job, done <-chan struct{}) {
 	f := func(job worker.Job, done <-chan struct{}) (interface{}, error) {
 		packID := job.Data.(backend.ID)
-		entries, err := repo.ListPack(packID)
+		entries, size, err := repo.ListPack(packID)
+
 		return ListAllPacksResult{
 			PackID:  packID,
+			Size:    size,
 			Entries: entries,
 		}, err
 	}

src/restic/repository/repack_test.go

@@ -76,7 +76,7 @@ func selectBlobs(t *testing.T, repo *repository.Repository, p float32) (list1, l
 	blobs := pack.NewBlobSet()
 
 	for id := range repo.List(backend.Data, done) {
-		entries, err := repo.ListPack(id)
+		entries, _, err := repo.ListPack(id)
 		if err != nil {
 			t.Fatalf("error listing pack %v: %v", id, err)
 		}

src/restic/repository/repository.go

@@ -544,17 +544,24 @@ func (r *Repository) List(t backend.Type, done <-chan struct{}) <-chan backend.I
 	return outCh
 }
 
-// ListPack returns the list of blobs saved in the pack id.
-func (r *Repository) ListPack(id backend.ID) ([]pack.Blob, error) {
+// ListPack returns the list of blobs saved in the pack id and the length of
+// the file as stored in the backend.
+func (r *Repository) ListPack(id backend.ID) ([]pack.Blob, int64, error) {
 	h := backend.Handle{Type: backend.Data, Name: id.String()}
+
+	blobInfo, err := r.Backend().Stat(h)
+	if err != nil {
+		return nil, 0, err
+	}
+
 	ldr := pack.BackendLoader{Backend: r.Backend(), Handle: h}
 
 	unpacker, err := pack.NewUnpacker(r.Key(), ldr)
 	if err != nil {
-		return nil, err
+		return nil, 0, err
 	}
 
-	return unpacker.Entries, nil
+	return unpacker.Entries, blobInfo.Size, nil
 }
 
 // Delete calls backend.Delete() if implemented, and returns an error