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https://github.com/octoleo/restic.git
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repository: Move cache preparation into function
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parent
22d5061df2
commit
2e7ec717c1
@ -413,52 +413,73 @@ func (r *Repository) LoadIndex(ctx context.Context) error {
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r.idx.Insert(idx)
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}
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if r.Cache != nil {
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// clear old index files
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err := r.Cache.Clear(restic.IndexFile, validIndex)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error clearing index files in cache: %v\n", err)
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}
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packs := restic.NewIDSet()
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for _, idx := range r.idx.All() {
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for id := range idx.Packs() {
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packs.Insert(id)
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}
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}
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// clear old data files
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err = r.Cache.Clear(restic.DataFile, packs)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error clearing data files in cache: %v\n", err)
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}
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treePacks := restic.NewIDSet()
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for _, idx := range r.idx.All() {
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for _, id := range idx.TreePacks() {
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treePacks.Insert(id)
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}
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}
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// use readahead
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cache := r.Cache.(*cache.Cache)
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cache.PerformReadahead = func(h restic.Handle) bool {
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if h.Type != restic.DataFile {
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return false
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}
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id, err := restic.ParseID(h.Name)
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if err != nil {
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return false
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}
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return treePacks.Has(id)
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}
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err := r.PrepareCache(validIndex)
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if err != nil {
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return err
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}
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return <-errCh
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}
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// PrepareCache initializes the local cache. indexIDs is the list of IDs of
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// index files still present in the repo.
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func (r *Repository) PrepareCache(indexIDs restic.IDSet) error {
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if r.Cache == nil {
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return nil
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}
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// clear old index files
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err := r.Cache.Clear(restic.IndexFile, indexIDs)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error clearing index files in cache: %v\n", err)
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}
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packs := restic.NewIDSet()
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for _, idx := range r.idx.All() {
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for id := range idx.Packs() {
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packs.Insert(id)
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}
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}
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// clear old data files
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err = r.Cache.Clear(restic.DataFile, packs)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error clearing data files in cache: %v\n", err)
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}
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treePacks := restic.NewIDSet()
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for _, idx := range r.idx.All() {
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for _, id := range idx.TreePacks() {
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treePacks.Insert(id)
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}
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}
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// use readahead
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debug.Log("using readahead")
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cache := r.Cache.(*cache.Cache)
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cache.PerformReadahead = func(h restic.Handle) bool {
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if h.Type != restic.DataFile {
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debug.Log("no readahead for %v, is not data file", h)
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return false
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}
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id, err := restic.ParseID(h.Name)
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if err != nil {
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debug.Log("no readahead for %v, invalid ID", h)
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return false
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}
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if treePacks.Has(id) {
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debug.Log("perform readahead for %v", h)
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return true
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}
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debug.Log("no readahead for %v, not tree file", h)
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return false
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}
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return nil
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}
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// LoadIndex loads the index id from backend and returns it.
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func LoadIndex(ctx context.Context, repo restic.Repository, id restic.ID) (*Index, error) {
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idx, err := LoadIndexWithDecoder(ctx, repo, id, DecodeIndex)
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