590745204c
All parameters and resulting values of all metabase operations are structured in new types. The most popular scenarios for using operations are moved to auxiliary functions. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
46 lines
1 KiB
Go
46 lines
1 KiB
Go
package shard
|
|
|
|
import (
|
|
"github.com/nspcc-dev/neofs-api-go/pkg/object"
|
|
meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase"
|
|
)
|
|
|
|
// ExistsPrm groups the parameters of Exists operation.
|
|
type ExistsPrm struct {
|
|
addr *object.Address
|
|
}
|
|
|
|
// ExistsRes groups resulting values of Exists operation.
|
|
type ExistsRes struct {
|
|
ex bool
|
|
}
|
|
|
|
// WithAddress is an Exists option to set object checked for existence.
|
|
func (p *ExistsPrm) WithAddress(addr *object.Address) *ExistsPrm {
|
|
if p != nil {
|
|
p.addr = addr
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// Exists returns the fact that the object is in the shard.
|
|
func (p *ExistsRes) Exists() bool {
|
|
return p.ex
|
|
}
|
|
|
|
// Exists checks if object is presented in shard.
|
|
//
|
|
// Returns any error encountered that does not allow to
|
|
// unambiguously determine the presence of an object.
|
|
func (s *Shard) Exists(prm *ExistsPrm) (*ExistsRes, error) {
|
|
exists, err := s.objectExists(prm.addr)
|
|
|
|
return &ExistsRes{
|
|
ex: exists,
|
|
}, err
|
|
}
|
|
|
|
func (s *Shard) objectExists(addr *object.Address) (bool, error) {
|
|
return meta.Exists(s.metaBase, addr)
|
|
}
|