frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree/delete.go

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package blobovniczatree
import (
"context"
"encoding/hex"
"path/filepath"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
"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-node/pkg/local_object_storage/util/logicerr"
"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/trace"
"go.uber.org/zap"
)
// Delete deletes object from blobovnicza tree.
//
// If blobocvnicza ID is specified, only this blobovnicza is processed.
// Otherwise, all Blobovniczas are processed descending weight.
func (b *Blobovniczas) Delete(ctx context.Context, prm common.DeletePrm) (res common.DeleteRes, err error) {
var (
success = false
startedAt = time.Now()
)
defer func() {
b.metrics.Delete(time.Since(startedAt), success, prm.StorageID != nil)
}()
ctx, span := tracing.StartSpanFromContext(ctx, "Blobovniczas.Delete",
trace.WithAttributes(
attribute.String("path", b.rootPath),
attribute.String("address", prm.Address.EncodeToString()),
attribute.String("storage_id", hex.EncodeToString(prm.StorageID)),
))
defer span.End()
if b.readOnly {
return common.DeleteRes{}, common.ErrReadOnly
}
var bPrm blobovnicza.DeletePrm
bPrm.SetAddress(prm.Address)
if prm.StorageID != nil {
id := blobovnicza.NewIDFromBytes(prm.StorageID)
blz, err := b.openBlobovnicza(id.String())
if err != nil {
return res, err
}
if res, err = b.deleteObject(ctx, blz, bPrm); err == nil {
success = true
}
return res, err
}
activeCache := make(map[string]struct{})
objectFound := false
err = b.iterateSortedLeaves(ctx, &prm.Address, func(p string) (bool, error) {
dirPath := filepath.Dir(p)
// don't process active blobovnicza of the level twice
_, ok := activeCache[dirPath]
res, err = b.deleteObjectFromLevel(ctx, bPrm, p, !ok)
if err != nil {
if !client.IsErrObjectNotFound(err) {
b.log.Debug(logs.BlobovniczatreeCouldNotRemoveObjectFromLevel,
zap.String("level", p),
zap.String("error", err.Error()),
)
}
}
activeCache[dirPath] = struct{}{}
if err == nil {
objectFound = true
}
// abort iterator if found, otherwise process all Blobovniczas
return err == nil, nil
})
if err == nil && !objectFound {
// not found in any blobovnicza
return common.DeleteRes{}, logicerr.Wrap(new(apistatus.ObjectNotFound))
}
success = err == nil
return
}
// tries to delete object from particular blobovnicza.
//
// returns no error if object was removed from some blobovnicza of the same level.
func (b *Blobovniczas) deleteObjectFromLevel(ctx context.Context, prm blobovnicza.DeletePrm, blzPath string, tryActive bool) (common.DeleteRes, error) {
lvlPath := filepath.Dir(blzPath)
// try to remove from blobovnicza if it is opened
b.lruMtx.Lock()
v, ok := b.opened.Get(blzPath)
b.lruMtx.Unlock()
if ok {
if res, err := b.deleteObject(ctx, v, prm); err == nil {
return res, err
} else if !client.IsErrObjectNotFound(err) {
b.log.Debug(logs.BlobovniczatreeCouldNotRemoveObjectFromOpenedBlobovnicza,
zap.String("path", blzPath),
zap.String("error", err.Error()),
)
}
}
// therefore the object is possibly placed in a lighter blobovnicza
// next we check in the active level blobobnicza:
// * the active blobovnicza is always opened.
b.activeMtx.RLock()
active, ok := b.active[lvlPath]
b.activeMtx.RUnlock()
if ok && tryActive {
if res, err := b.deleteObject(ctx, active.blz, prm); err == nil {
return res, err
} else if !client.IsErrObjectNotFound(err) {
b.log.Debug(logs.BlobovniczatreeCouldNotRemoveObjectFromActiveBlobovnicza,
zap.String("path", blzPath),
zap.String("error", err.Error()),
)
}
}
// then object is possibly placed in closed blobovnicza
// check if it makes sense to try to open the blob
// (Blobovniczas "after" the active one are empty anyway,
// and it's pointless to open them).
if u64FromHexString(filepath.Base(blzPath)) > active.ind {
return common.DeleteRes{}, logicerr.Wrap(new(apistatus.ObjectNotFound))
}
// open blobovnicza (cached inside)
blz, err := b.openBlobovnicza(blzPath)
if err != nil {
return common.DeleteRes{}, err
}
return b.deleteObject(ctx, blz, prm)
}
// removes object from blobovnicza and returns common.DeleteRes.
func (b *Blobovniczas) deleteObject(ctx context.Context, blz *blobovnicza.Blobovnicza, prm blobovnicza.DeletePrm) (common.DeleteRes, error) {
_, err := blz.Delete(ctx, prm)
return common.DeleteRes{}, err
}