TheArchive/restic
1
0
Fork 0
mirror of https://github.com/restic/restic.git synced 2025-08-12 11:47:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

restore: Removed legacy restore implementation

Browse Source 
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
This commit is contained in:
Igor Fedorenko
2018-05-11 00:45:14 -04:00
committed by Alexander Neumann
parent 1869930d95
commit da57302fca
7 changed files with 33 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
internal/restorer/filerestorer.go
View File

@@ -18,8 +18,6 @@ import (
// TODO evaluate memory footprint for larger repositories, say 10M packs/10M files
// TODO consider replacing pack file cache with blob cache
// TODO avoid decrypting the same blob multiple times
// TODO remove `restore --singlethreaded` and review/simplify hardlink support
// (node.CreateAt shouldn't take HardlinkIndex)
// TODO evaluate disabled debug logging overhead for large repositories
// TODO consider logging snapshot-relative path to reduce log clutter

52
internal/restorer/restorer.go
View File

@@ -140,10 +140,10 @@ func (res *Restorer) traverseTree(ctx context.Context, target, location string,
return nil
}
func (res *Restorer) restoreNodeTo(ctx context.Context, node *restic.Node, target, location string, idx *restic.HardlinkIndex) error {
func (res *Restorer) restoreNodeTo(ctx context.Context, node *restic.Node, target, location string) error {
debug.Log("restoreNode %v %v %v", node.Name, target, location)
err := node.CreateAt(ctx, target, res.repo, idx)
err := node.CreateAt(ctx, target, res.repo)
if err != nil {
debug.Log("node.CreateAt(%s) error %v", target, err)
}
@@ -163,9 +163,20 @@ func (res *Restorer) restoreNodeMetadataTo(node *restic.Node, target, location s
return err
}
func (res *Restorer) restoreHardlinkAt(node *restic.Node, target, path, location string) error {
if err := fs.Remove(path); !os.IsNotExist(err) {
return errors.Wrap(err, "RemoveCreateHardlink")
}
err := fs.Link(target, path)
if err != nil {
return errors.Wrap(err, "CreateHardlink")
}
return res.restoreNodeMetadataTo(node, target, location)
}
// RestoreTo creates the directories and files in the snapshot below dst.
// Before an item is created, res.Filter is called.
func (res *Restorer) RestoreTo(ctx context.Context, dst string, singlethreaded bool) error {
func (res *Restorer) RestoreTo(ctx context.Context, dst string) error {
var err error
if !filepath.IsAbs(dst) {
dst, err = filepath.Abs(dst)
@@ -180,31 +191,6 @@ func (res *Restorer) RestoreTo(ctx context.Context, dst string, singlethreaded b
noop := func(node *restic.Node, target, location string) error { return nil }
idx := restic.NewHardlinkIndex()
if singlethreaded {
return res.traverseTree(ctx, dst, string(filepath.Separator), *res.sn.Tree, treeVisitor{
enterDir: func(node *restic.Node, target, location string) error {
// create dir with default permissions
// #leaveDir restores dir metadata after visiting all children
return fs.MkdirAll(target, 0700)
},
visitNode: func(node *restic.Node, target, location string) error {
// create parent dir with default permissions
// #leaveDir restores dir metadata after visiting all children
err := fs.MkdirAll(filepath.Dir(target), 0700)
if err != nil {
return err
}
return res.restoreNodeTo(ctx, node, target, location, idx)
},
// Restore directory permissions and timestamp at the end. If we did it earlier
// - children restore could fail because of restictive directory permission
// - children restore could overwrite the timestamp of the directory they are in
leaveDir: restoreNodeMetadata,
})
}
filerestorer := newFileRestorer(res.repo.Backend().Load, res.repo.Key(), filePackTraverser{lookup: res.repo.Index().Lookup})
@@ -258,15 +244,15 @@ func (res *Restorer) RestoreTo(ctx context.Context, dst string, singlethreaded b
return res.traverseTree(ctx, dst, string(filepath.Separator), *res.sn.Tree, treeVisitor{
enterDir: noop,
visitNode: func(node *restic.Node, target, location string) error {
isHardlink := func() bool {
return idx.Has(node.Inode, node.DeviceID) && idx.GetFilename(node.Inode, node.DeviceID) != target
if idx.Has(node.Inode, node.DeviceID) && idx.GetFilename(node.Inode, node.DeviceID) != target {
return res.restoreHardlinkAt(node, idx.GetFilename(node.Inode, node.DeviceID), target, location)
}
if node.Type != "file" || isHardlink() {
return res.restoreNodeTo(ctx, node, target, location, idx)
if node.Type != "file" {
return res.restoreNodeTo(ctx, node, target, location)
}
return node.RestoreMetadata(target)
return res.restoreNodeMetadataTo(node, target, location)
},
leaveDir: restoreNodeMetadata,
})

4
internal/restorer/restorer_test.go
View File

@@ -340,7 +340,7 @@ func TestRestorer(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
err = res.RestoreTo(ctx, tempdir, false)
err = res.RestoreTo(ctx, tempdir)
if err != nil {
t.Fatal(err)
}
@@ -446,7 +446,7 @@ func TestRestorerRelative(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
err = res.RestoreTo(ctx, "restore", false)
err = res.RestoreTo(ctx, "restore")
if err != nil {
t.Fatal(err)
}