frostfs-node/pkg/local_object_storage/engine/exists.go
Pavel Karpy 156ba85326 [] node: Do not return expired objects
If an object has not been marked for removal by the GC in the current epoch
yet but has already expired, respond with `ErrObjectNotFound` api status.
Also, optimize shard iteration: a node must stop any iteration if the object
 is found but gonna be removed soon.
All the checks are performed by the Metabase.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2022-08-04 16:31:49 +03:00

54 lines
1.1 KiB
Go

package engine
import (
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
)
func (e *StorageEngine) exists(addr oid.Address) (bool, error) {
var shPrm shard.ExistsPrm
shPrm.SetAddress(addr)
alreadyRemoved := false
exists := false
e.iterateOverSortedShards(addr, func(_ int, sh hashedShard) (stop bool) {
res, err := sh.Exists(shPrm)
if err != nil {
if shard.IsErrRemoved(err) {
alreadyRemoved = true
return true
}
_, ok := err.(*objectSDK.SplitInfoError)
if ok {
return true
}
if shard.IsErrObjectExpired(err) {
return true
}
if !shard.IsErrNotFound(err) {
e.reportShardError(sh, "could not check existence of object in shard", err)
}
return false
}
if !exists {
exists = res.Exists()
}
return false
})
if alreadyRemoved {
var errRemoved apistatus.ObjectAlreadyRemoved
return false, errRemoved
}
return exists, nil
}