package blobovniczatree import ( "context" "fmt" "path/filepath" "time" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common" "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing" oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id" "git.frostfs.info/TrueCloudLab/hrw" "go.opentelemetry.io/otel/attribute" "go.opentelemetry.io/otel/trace" ) // Iterate iterates over all objects in b. func (b *Blobovniczas) Iterate(ctx context.Context, prm common.IteratePrm) (common.IterateRes, error) { var ( startedAt = time.Now() err error ) defer func() { b.metrics.Iterate(time.Since(startedAt), err == nil) }() ctx, span := tracing.StartSpanFromContext(ctx, "Blobovniczas.Iterate", trace.WithAttributes( attribute.String("path", b.rootPath), attribute.Bool("ignore_errors", prm.IgnoreErrors), )) defer span.End() err = b.iterateBlobovniczas(ctx, prm.IgnoreErrors, func(p string, blz *blobovnicza.Blobovnicza) error { var subPrm blobovnicza.IteratePrm subPrm.SetHandler(func(elem blobovnicza.IterationElement) error { data, err := b.compression.Decompress(elem.ObjectData()) if err != nil { if prm.IgnoreErrors { if prm.ErrorHandler != nil { return prm.ErrorHandler(elem.Address(), err) } return nil } return fmt.Errorf("could not decompress object data: %w", err) } if prm.Handler != nil { return prm.Handler(common.IterationElement{ Address: elem.Address(), ObjectData: data, StorageID: []byte(p), }) } return prm.LazyHandler(elem.Address(), func() ([]byte, error) { return data, err }) }) subPrm.DecodeAddresses() _, err := blz.Iterate(ctx, subPrm) return err }) return common.IterateRes{}, err } // iterator over all Blobovniczas in unsorted order. Break on f's error return. func (b *Blobovniczas) iterateBlobovniczas(ctx context.Context, ignoreErrors bool, f func(string, *blobovnicza.Blobovnicza) error) error { return b.iterateLeaves(ctx, func(p string) (bool, error) { shBlz := b.openBlobovnicza(p) blz, err := shBlz.Open() if err != nil { if ignoreErrors { return false, nil } return false, fmt.Errorf("could not open blobovnicza %s: %w", p, err) } defer shBlz.Close() err = f(p, blz) return err != nil, err }) } // iterator over the paths of Blobovniczas sorted by weight. func (b *Blobovniczas) iterateSortedLeaves(ctx context.Context, addr *oid.Address, f func(string) (bool, error)) error { _, err := b.iterateSorted( ctx, addr, make([]string, 0, b.blzShallowDepth), b.blzShallowDepth, func(p []string) (bool, error) { return f(filepath.Join(p...)) }, ) return err } // iterator over directories with Blobovniczas sorted by weight. func (b *Blobovniczas) iterateDeepest(ctx context.Context, addr oid.Address, f func(string) (bool, error)) error { depth := b.blzShallowDepth if depth > 0 { depth-- } _, err := b.iterateSorted( ctx, &addr, make([]string, 0, depth), depth, func(p []string) (bool, error) { return f(filepath.Join(p...)) }, ) return err } // iterator over particular level of directories. func (b *Blobovniczas) iterateSorted(ctx context.Context, addr *oid.Address, curPath []string, execDepth uint64, f func([]string) (bool, error)) (bool, error) { isLeafLevel := uint64(len(curPath)) == b.blzShallowDepth levelWidth := b.blzShallowWidth if isLeafLevel { levelWidth = b.blzLeafWidth } indices := indexSlice(levelWidth) hrw.SortSliceByValue(indices, addressHash(addr, filepath.Join(curPath...))) exec := uint64(len(curPath)) == execDepth for i := range indices { select { case <-ctx.Done(): return false, ctx.Err() default: } if i == 0 { curPath = append(curPath, u64ToHexString(indices[i])) } else { curPath[len(curPath)-1] = u64ToHexString(indices[i]) } if exec { if stop, err := f(curPath); err != nil { return false, err } else if stop { return true, nil } } else if stop, err := b.iterateSorted(ctx, addr, curPath, execDepth, f); err != nil { return false, err } else if stop { return true, nil } } return false, nil } // iterator over the paths of Blobovniczas in random order. func (b *Blobovniczas) iterateLeaves(ctx context.Context, f func(string) (bool, error)) error { return b.iterateSortedLeaves(ctx, nil, f) } // makes slice of uint64 values from 0 to number-1. func indexSlice(number uint64) []uint64 { s := make([]uint64, number) for i := range s { s[i] = uint64(i) } return s }