octoleo/restic
2
2
Fork 0
mirror of https://github.com/octoleo/restic.git synced 2024-11-25 14:17:42 +00:00
Code Issues Releases Wiki Activity

restorer: Make hardlink index generic

Browse Source 
This will allow reusing it for the stats command without regressing the
memory usage due to storing an unnecessary file path.
This commit is contained in:
Michael Eischer 2023-10-01 23:24:42 +02:00
parent 45962c2847
commit a8fdcf79b7
3 changed files with 17 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
internal/restorer/hardlinks_index.go
View File

@ -10,20 +10,20 @@ type HardlinkKey struct {
}
// HardlinkIndex contains a list of inodes, devices these inodes are one, and associated file names.
type HardlinkIndex struct {
type HardlinkIndex[T any] struct {
m sync.Mutex
Index map[HardlinkKey]string
Index map[HardlinkKey]T
}
// NewHardlinkIndex create a new index for hard links
func NewHardlinkIndex() *HardlinkIndex {
return &HardlinkIndex{
Index: make(map[HardlinkKey]string),
func NewHardlinkIndex[T any]() *HardlinkIndex[T] {
return &HardlinkIndex[T]{
Index: make(map[HardlinkKey]T),
}
}
// Has checks wether the link already exist in the index.
func (idx *HardlinkIndex) Has(inode uint64, device uint64) bool {
func (idx *HardlinkIndex[T]) Has(inode uint64, device uint64) bool {
idx.m.Lock()
defer idx.m.Unlock()
_, ok := idx.Index[HardlinkKey{inode, device}]
@ -32,25 +32,25 @@ func (idx *HardlinkIndex) Has(inode uint64, device uint64) bool {
}
// Add adds a link to the index.
func (idx *HardlinkIndex) Add(inode uint64, device uint64, name string) {
func (idx *HardlinkIndex[T]) Add(inode uint64, device uint64, value T) {
idx.m.Lock()
defer idx.m.Unlock()
_, ok := idx.Index[HardlinkKey{inode, device}]
if !ok {
idx.Index[HardlinkKey{inode, device}] = name
idx.Index[HardlinkKey{inode, device}] = value
}
}
// GetFilename obtains the filename from the index.
func (idx *HardlinkIndex) GetFilename(inode uint64, device uint64) string {
// Value obtains the filename from the index.
func (idx *HardlinkIndex[T]) Value(inode uint64, device uint64) T {
idx.m.Lock()
defer idx.m.Unlock()
return idx.Index[HardlinkKey{inode, device}]
}
// Remove removes a link from the index.
func (idx *HardlinkIndex) Remove(inode uint64, device uint64) {
func (idx *HardlinkIndex[T]) Remove(inode uint64, device uint64) {
idx.m.Lock()
defer idx.m.Unlock()
delete(idx.Index, HardlinkKey{inode, device})

6
internal/restorer/hardlinks_index_test.go
View File

@ -10,15 +10,15 @@ import (
// TestHardLinks contains various tests for HardlinkIndex.
func TestHardLinks(t *testing.T) {
idx := restorer.NewHardlinkIndex()
idx := restorer.NewHardlinkIndex[string]()
idx.Add(1, 2, "inode1-file1-on-device2")
idx.Add(2, 3, "inode2-file2-on-device3")
sresult := idx.GetFilename(1, 2)
sresult := idx.Value(1, 2)
rtest.Equals(t, sresult, "inode1-file1-on-device2")
sresult = idx.GetFilename(2, 3)
sresult = idx.Value(2, 3)
rtest.Equals(t, sresult, "inode2-file2-on-device3")
bresult := idx.Has(1, 2)

6
internal/restorer/restorer.go
View File

@ -230,7 +230,7 @@ func (res *Restorer) RestoreTo(ctx context.Context, dst string) error {
}
}
idx := NewHardlinkIndex()
idx := NewHardlinkIndex[string]()
filerestorer := newFileRestorer(dst, res.repo.Backend().Load, res.repo.Key(), res.repo.Index().Lookup,
res.repo.Connections(), res.sparse, res.progress)
filerestorer.Error = res.Error
@ -319,8 +319,8 @@ func (res *Restorer) RestoreTo(ctx context.Context, dst string) error {
return res.restoreEmptyFileAt(node, target, location)
}
if idx.Has(node.Inode, node.DeviceID) && idx.GetFilename(node.Inode, node.DeviceID) != location {
return res.restoreHardlinkAt(node, filerestorer.targetPath(idx.GetFilename(node.Inode, node.DeviceID)), target, location)
if idx.Has(node.Inode, node.DeviceID) && idx.Value(node.Inode, node.DeviceID) != location {
return res.restoreHardlinkAt(node, filerestorer.targetPath(idx.Value(node.Inode, node.DeviceID)), target, location)
}
return res.restoreNodeMetadataTo(node, target, location)