134 lines
3.8 KiB
Go
134 lines
3.8 KiB
Go
package blobovniczatree
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import (
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"path/filepath"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/common"
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apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
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"go.uber.org/zap"
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)
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// Delete deletes object from blobovnicza tree.
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//
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// If blobocvnicza ID is specified, only this blobovnicza is processed.
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// Otherwise, all Blobovniczas are processed descending weight.
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func (b *Blobovniczas) Delete(prm common.DeletePrm) (res common.DeleteRes, err error) {
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var bPrm blobovnicza.DeletePrm
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bPrm.SetAddress(prm.Address)
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if prm.StorageID != nil {
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id := blobovnicza.NewIDFromBytes(prm.StorageID)
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blz, err := b.openBlobovnicza(id.String())
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if err != nil {
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return res, err
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}
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return b.deleteObject(blz, bPrm, prm)
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}
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activeCache := make(map[string]struct{})
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objectFound := false
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err = b.iterateSortedLeaves(&prm.Address, func(p string) (bool, error) {
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dirPath := filepath.Dir(p)
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// don't process active blobovnicza of the level twice
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_, ok := activeCache[dirPath]
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res, err = b.deleteObjectFromLevel(bPrm, p, !ok, prm)
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if err != nil {
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if !blobovnicza.IsErrNotFound(err) {
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b.log.Debug("could not remove object from level",
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zap.String("level", p),
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zap.String("error", err.Error()),
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)
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}
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}
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activeCache[dirPath] = struct{}{}
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if err == nil {
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objectFound = true
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}
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// abort iterator if found, otherwise process all Blobovniczas
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return err == nil, nil
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})
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if err == nil && !objectFound {
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// not found in any blobovnicza
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var errNotFound apistatus.ObjectNotFound
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return common.DeleteRes{}, errNotFound
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}
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return
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}
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// tries to delete object from particular blobovnicza.
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//
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// returns no error if object was removed from some blobovnicza of the same level.
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func (b *Blobovniczas) deleteObjectFromLevel(prm blobovnicza.DeletePrm, blzPath string, tryActive bool, dp common.DeletePrm) (common.DeleteRes, error) {
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lvlPath := filepath.Dir(blzPath)
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// try to remove from blobovnicza if it is opened
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b.lruMtx.Lock()
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v, ok := b.opened.Get(blzPath)
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b.lruMtx.Unlock()
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if ok {
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if res, err := b.deleteObject(v.(*blobovnicza.Blobovnicza), prm, dp); err == nil {
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return res, err
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} else if !blobovnicza.IsErrNotFound(err) {
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b.log.Debug("could not remove object from opened blobovnicza",
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zap.String("path", blzPath),
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zap.String("error", err.Error()),
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)
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}
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}
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// therefore the object is possibly placed in a lighter blobovnicza
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// next we check in the active level blobobnicza:
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// * the active blobovnicza is always opened.
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b.activeMtx.RLock()
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active, ok := b.active[lvlPath]
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b.activeMtx.RUnlock()
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if ok && tryActive {
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if res, err := b.deleteObject(active.blz, prm, dp); err == nil {
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return res, err
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} else if !blobovnicza.IsErrNotFound(err) {
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b.log.Debug("could not remove object from active blobovnicza",
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zap.String("path", blzPath),
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zap.String("error", err.Error()),
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)
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}
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}
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// then object is possibly placed in closed blobovnicza
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// check if it makes sense to try to open the blob
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// (Blobovniczas "after" the active one are empty anyway,
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// and it's pointless to open them).
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if u64FromHexString(filepath.Base(blzPath)) > active.ind {
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b.log.Debug("index is too big", zap.String("path", blzPath))
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var errNotFound apistatus.ObjectNotFound
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return common.DeleteRes{}, errNotFound
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}
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// open blobovnicza (cached inside)
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blz, err := b.openBlobovnicza(blzPath)
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if err != nil {
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return common.DeleteRes{}, err
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}
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return b.deleteObject(blz, prm, dp)
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}
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// removes object from blobovnicza and returns common.DeleteRes.
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func (b *Blobovniczas) deleteObject(blz *blobovnicza.Blobovnicza, prm blobovnicza.DeletePrm, dp common.DeletePrm) (common.DeleteRes, error) {
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_, err := blz.Delete(prm)
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return common.DeleteRes{}, err
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}
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