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

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package engine
import (
"errors"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase/v2"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
"go.uber.org/zap"
)
// PutPrm groups the parameters of Put operation.
type PutPrm struct {
obj *object.Object
}
// PutRes groups resulting values of Put operation.
type PutRes struct{}
var errPutShard = errors.New("could not put object to any shard")
// WithObject is a Put option to set object to save.
//
// Option is required.
func (p *PutPrm) WithObject(obj *object.Object) *PutPrm {
if p != nil {
p.obj = obj
}
return p
}
// Put saves the object to local storage.
//
// Returns any error encountered that
// did not allow to completely save the object.
func (e *StorageEngine) Put(prm *PutPrm) (*PutRes, error) {
alreadyRemoved := false // first check if object has not been marked as removed
existPrm := new(shard.ExistsPrm)
existPrm.WithAddress(prm.obj.Address())
// todo: make this check parallel
e.iterateOverUnsortedShards(func(s *shard.Shard) (stop bool) {
_, err := s.Exists(existPrm)
if err != nil && errors.Is(err, meta.ErrAlreadyRemoved) {
alreadyRemoved = true
return true
}
return false
})
if alreadyRemoved {
return nil, meta.ErrAlreadyRemoved
}
finished := false
e.iterateOverSortedShards(prm.obj.Address(), func(ind int, s *shard.Shard) (stop bool) {
exists, err := s.Exists(existPrm)
if err != nil {
return false // this is not ErrAlreadyRemoved error so we can go to the next shard
}
if exists.Exists() {
if ind != 0 {
toMoveItPrm := new(shard.ToMoveItPrm)
toMoveItPrm.WithAddress(prm.obj.Address())
_, err = s.ToMoveIt(toMoveItPrm)
if err != nil {
e.log.Warn("could not mark object for shard relocation",
zap.Stringer("shard", s.ID()),
zap.String("error", err.Error()),
)
}
}
finished = true
return true
}
putPrm := new(shard.PutPrm)
putPrm.WithObject(prm.obj)
_, err = s.Put(putPrm)
if err != nil {
e.log.Warn("could not put object in shard",
zap.Stringer("shard", s.ID()),
zap.String("error", err.Error()),
)
return false
}
finished = true
return true
})
var err error = nil
if !finished {
err = errPutShard
}
return nil, err
}
// Put writes provided object to local storage.
func Put(storage *StorageEngine, obj *object.Object) error {
_, err := storage.Put(new(PutPrm).
WithObject(obj),
)
return err
}