frostfs-node/pkg/local_object_storage/engine/exists.go

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package engine
import (
"errors"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
addressSDK "github.com/nspcc-dev/neofs-sdk-go/object/address"
)
func (e *StorageEngine) exists(addr *addressSDK.Address) (bool, error) {
shPrm := new(shard.ExistsPrm).WithAddress(addr)
alreadyRemoved := false
exists := false
e.iterateOverSortedShards(addr, func(_ int, sh hashedShard) (stop bool) {
res, err := sh.Exists(shPrm)
if err != nil {
if errors.Is(err, object.ErrAlreadyRemoved) {
alreadyRemoved = true
return true
}
e.reportShardError(sh, "could not check existence of object in shard", err)
}
if res != nil && !exists {
exists = res.Exists()
}
return false
})
if alreadyRemoved {
return false, object.ErrAlreadyRemoved
}
return exists, nil
}