100 lines
2 KiB
Go
100 lines
2 KiB
Go
package engine
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import (
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"errors"
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"github.com/nspcc-dev/neofs-node/pkg/core/object"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
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"go.uber.org/zap"
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)
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// PutPrm groups the parameters of Put operation.
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type PutPrm struct {
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obj *object.Object
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}
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// PutRes groups resulting values of Put operation.
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type PutRes struct{}
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var errPutShard = errors.New("could not put object to any shard")
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// WithObject is a Put option to set object to save.
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//
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// Option is required.
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func (p *PutPrm) WithObject(obj *object.Object) *PutPrm {
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if p != nil {
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p.obj = obj
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}
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return p
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}
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// Put saves the object to local storage.
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//
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// Returns any error encountered that
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// did not allow to completely save the object.
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func (e *StorageEngine) Put(prm *PutPrm) (*PutRes, error) {
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// choose shards through sorting by weight
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sortedShards := e.sortShardsByWeight(prm.obj.Address())
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// check object existence
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if e.objectExists(prm.obj, sortedShards) {
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return nil, nil
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}
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shPrm := new(shard.PutPrm)
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// save the object into the "largest" possible shard
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for _, sh := range sortedShards {
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_, err := sh.sh.Put(
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shPrm.WithObject(prm.obj),
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)
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if err != nil {
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// TODO: smth wrong with shard, need to be processed
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e.log.Warn("could not save object in shard",
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zap.Stringer("shard", sh.sh.ID()),
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zap.String("error", err.Error()),
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)
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} else {
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return nil, nil
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}
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}
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return nil, errPutShard
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}
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func (e *StorageEngine) objectExists(obj *object.Object, shards []hashedShard) bool {
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exists := false
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for _, sh := range shards {
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res, err := sh.sh.Exists(
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new(shard.ExistsPrm).
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WithAddress(obj.Address()),
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)
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if err != nil {
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// TODO: smth wrong with shard, need to be processed
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e.log.Warn("could not check object existence",
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zap.String("error", err.Error()),
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)
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continue
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}
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if exists = res.Exists(); exists {
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break
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}
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}
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return exists
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}
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// Put writes provided object to local storage.
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func Put(storage *StorageEngine, obj *object.Object) error {
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_, err := storage.Put(new(PutPrm).
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WithObject(obj),
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)
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return err
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}
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