repository: index saving belongs into the MasterIndex

internal/checker/checker_test.go

@@ -508,7 +508,6 @@ func TestCheckerBlobTypeConfusion(t *testing.T) {
 	test.OK(t, err)
 
 	test.OK(t, repo.Flush(ctx))
-	test.OK(t, repo.SaveIndex(ctx))
 
 	snapshot, err := restic.NewSnapshot([]string{"/damaged"}, []string{"test"}, "foo", time.Now())
 	test.OK(t, err)

internal/repository/master_index.go

@@ -1,6 +1,7 @@
 package repository
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 	"sync"
@@ -405,6 +406,44 @@ func (mi *MasterIndex) Save(ctx context.Context, repo restic.Repository, packBla
 	return obsolete, err
 }
 
+// SaveIndex saves an index in the repository.
+func SaveIndex(ctx context.Context, repo restic.SaverUnpacked, index *Index) (restic.ID, error) {
+	buf := bytes.NewBuffer(nil)
+
+	err := index.Encode(buf)
+	if err != nil {
+		return restic.ID{}, err
+	}
+
+	return repo.SaveUnpacked(ctx, restic.IndexFile, buf.Bytes())
+}
+
+// saveIndex saves all indexes in the backend.
+func (mi *MasterIndex) saveIndex(ctx context.Context, r restic.SaverUnpacked, indexes ...*Index) error {
+	for i, idx := range indexes {
+		debug.Log("Saving index %d", i)
+
+		sid, err := SaveIndex(ctx, r, idx)
+		if err != nil {
+			return err
+		}
+
+		debug.Log("Saved index %d as %v", i, sid)
+	}
+
+	return mi.MergeFinalIndexes()
+}
+
+// SaveIndex saves all new indexes in the backend.
+func (mi *MasterIndex) SaveIndex(ctx context.Context, r restic.SaverUnpacked) error {
+	return mi.saveIndex(ctx, r, mi.FinalizeNotFinalIndexes()...)
+}
+
+// SaveFullIndex saves all full indexes in the backend.
+func (mi *MasterIndex) SaveFullIndex(ctx context.Context, r restic.SaverUnpacked) error {
+	return mi.saveIndex(ctx, r, mi.FinalizeFullIndexes()...)
+}
+
 // ListPacks returns the blobs of the specified pack files grouped by pack file.
 func (mi *MasterIndex) ListPacks(ctx context.Context, packs restic.IDSet) <-chan restic.PackBlobs {
 	out := make(chan restic.PackBlobs)

internal/repository/packer_manager.go

@@ -154,7 +154,7 @@ func (r *Repository) savePacker(ctx context.Context, t restic.BlobType, p *Packe
 	if r.noAutoIndexUpdate {
 		return nil
 	}
-	return r.SaveFullIndex(ctx)
+	return r.idx.SaveFullIndex(ctx, r)
 }
 
 // countPacker returns the number of open (unfinished) packers.

internal/repository/repack_test.go

@@ -155,8 +155,8 @@ func repack(t *testing.T, repo restic.Repository, packs restic.IDSet, blobs rest
 	}
 }
 
-func saveIndex(t *testing.T, repo restic.Repository) {
-	if err := repo.SaveIndex(context.TODO()); err != nil {
+func flush(t *testing.T, repo restic.Repository) {
+	if err := repo.Flush(context.TODO()); err != nil {
 		t.Fatalf("repo.SaveIndex() %v", err)
 	}
 }
@@ -237,7 +237,7 @@ func testRepack(t *testing.T, version uint) {
 			packsBefore, packsAfter)
 	}
 
-	saveIndex(t, repo)
+	flush(t, repo)
 
 	removeBlobs, keepBlobs := selectBlobs(t, repo, 0.2)
 
@@ -297,7 +297,7 @@ func testRepackCopy(t *testing.T, version uint) {
 	t.Logf("rand seed is %v", seed)
 
 	createRandomBlobs(t, repo, 100, 0.7)
-	saveIndex(t, repo)
+	flush(t, repo)
 
 	_, keepBlobs := selectBlobs(t, repo, 0.2)
 	copyPacks := findPacksForBlobs(t, repo, keepBlobs)

internal/repository/repository.go

@@ -527,7 +527,7 @@ func (r *Repository) Flush(ctx context.Context) error {
 	if r.noAutoIndexUpdate {
 		return nil
 	}
-	return r.SaveIndex(ctx)
+	return r.idx.SaveIndex(ctx, r)
 }
 
 // FlushPacks saves all remaining packs.
@@ -573,44 +573,6 @@ func (r *Repository) SetIndex(i restic.MasterIndex) error {
 	return r.PrepareCache()
 }
 
-// SaveIndex saves an index in the repository.
-func SaveIndex(ctx context.Context, repo restic.Repository, index *Index) (restic.ID, error) {
-	buf := bytes.NewBuffer(nil)
-
-	err := index.Encode(buf)
-	if err != nil {
-		return restic.ID{}, err
-	}
-
-	return repo.SaveUnpacked(ctx, restic.IndexFile, buf.Bytes())
-}
-
-// saveIndex saves all indexes in the backend.
-func (r *Repository) saveIndex(ctx context.Context, indexes ...*Index) error {
-	for i, idx := range indexes {
-		debug.Log("Saving index %d", i)
-
-		sid, err := SaveIndex(ctx, r, idx)
-		if err != nil {
-			return err
-		}
-
-		debug.Log("Saved index %d as %v", i, sid)
-	}
-
-	return r.idx.MergeFinalIndexes()
-}
-
-// SaveIndex saves all new indexes in the backend.
-func (r *Repository) SaveIndex(ctx context.Context) error {
-	return r.saveIndex(ctx, r.idx.FinalizeNotFinalIndexes()...)
-}
-
-// SaveFullIndex saves all full indexes in the backend.
-func (r *Repository) SaveFullIndex(ctx context.Context) error {
-	return r.saveIndex(ctx, r.idx.FinalizeFullIndexes()...)
-}
-
 // LoadIndex loads all index files from the backend in parallel and stores them
 // in the master index. The first error that occurred is returned.
 func (r *Repository) LoadIndex(ctx context.Context) error {

internal/repository/repository_test.go

@@ -421,8 +421,7 @@ func testRepositoryIncrementalIndex(t *testing.T, version uint) {
 			saveRandomDataBlobs(t, repo, 5, 1<<15)
 			rtest.OK(t, repo.FlushPacks(context.Background()))
 		}
-
-		rtest.OK(t, repo.SaveFullIndex(context.TODO()))
+		rtest.OK(t, repo.Flush(context.TODO()))
 	}
 
 	// add another 5 packs
@@ -432,7 +431,7 @@ func testRepositoryIncrementalIndex(t *testing.T, version uint) {
 	}
 
 	// save final index
-	rtest.OK(t, repo.SaveIndex(context.TODO()))
+	rtest.OK(t, repo.Flush(context.TODO()))
 
 	packEntries := make(map[restic.ID]map[restic.ID]struct{})
 

internal/restic/repository.go

@@ -15,17 +15,13 @@ type Repository interface {
 
 	Key() *crypto.Key
 
-	SetIndex(MasterIndex) error
-
 	Index() MasterIndex
-	SaveFullIndex(context.Context) error
-	SaveIndex(context.Context) error
 	LoadIndex(context.Context) error
+	SetIndex(MasterIndex) error
+	LookupBlobSize(ID, BlobType) (uint, bool)
 
 	Config() Config
 
-	LookupBlobSize(ID, BlobType) (uint, bool)
-
 	// List calls the function fn for each file of type t in the repository.
 	// When an error is returned by fn, processing stops and List() returns the
 	// error.
@@ -65,6 +61,11 @@ type LoadJSONUnpackeder interface {
 	LoadJSONUnpacked(ctx context.Context, t FileType, id ID, dest interface{}) error
 }
 
+// SaverUnpacked allows saving a blob not stored in a pack file
+type SaverUnpacked interface {
+	SaveUnpacked(context.Context, FileType, []byte) (ID, error)
+}
+
 type PackBlobs struct {
 	PackID ID
 	Blobs  []Blob