forked from TrueCloudLab/frostfs-node
104 lines
2.5 KiB
Go
104 lines
2.5 KiB
Go
package meta
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import (
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"github.com/nspcc-dev/neo-go/pkg/util/slice"
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oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
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"go.etcd.io/bbolt"
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)
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// StorageIDPrm groups the parameters of StorageID operation.
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type StorageIDPrm struct {
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addr oid.Address
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}
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// StorageIDRes groups the resulting values of StorageID operation.
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type StorageIDRes struct {
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id []byte
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}
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// SetAddress is a StorageID option to set the object address to check.
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func (p *StorageIDPrm) SetAddress(addr oid.Address) {
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p.addr = addr
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}
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// StorageID returns storage ID.
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func (r StorageIDRes) StorageID() []byte {
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return r.id
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}
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// StorageID returns storage descriptor for objects from the blobstor.
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// It is put together with the object can makes get/delete operation faster.
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func (db *DB) StorageID(prm StorageIDPrm) (res StorageIDRes, err error) {
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db.modeMtx.RLock()
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defer db.modeMtx.RUnlock()
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if db.mode.NoMetabase() {
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return res, ErrDegradedMode
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}
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err = db.boltDB.View(func(tx *bbolt.Tx) error {
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res.id, err = db.storageID(tx, prm.addr)
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return err
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})
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return
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}
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func (db *DB) storageID(tx *bbolt.Tx, addr oid.Address) ([]byte, error) {
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key := make([]byte, bucketKeySize)
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smallBucket := tx.Bucket(smallBucketName(addr.Container(), key))
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if smallBucket == nil {
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return nil, nil
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}
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storageID := smallBucket.Get(objectKey(addr.Object(), key))
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if storageID == nil {
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return nil, nil
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}
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return slice.Copy(storageID), nil
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}
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// UpdateStorageIDPrm groups the parameters of UpdateStorageID operation.
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type UpdateStorageIDPrm struct {
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addr oid.Address
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id []byte
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}
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// UpdateStorageIDRes groups the resulting values of UpdateStorageID operation.
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type UpdateStorageIDRes struct{}
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// SetAddress is an UpdateStorageID option to set the object address to check.
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func (p *UpdateStorageIDPrm) SetAddress(addr oid.Address) {
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p.addr = addr
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}
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// SetStorageID is an UpdateStorageID option to set the storage ID.
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func (p *UpdateStorageIDPrm) SetStorageID(id []byte) {
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p.id = id
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}
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// UpdateStorageID updates storage descriptor for objects from the blobstor.
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func (db *DB) UpdateStorageID(prm UpdateStorageIDPrm) (res UpdateStorageIDRes, err error) {
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db.modeMtx.RLock()
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defer db.modeMtx.RUnlock()
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if db.mode.NoMetabase() {
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return res, ErrDegradedMode
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} else if db.mode.ReadOnly() {
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return res, ErrReadOnlyMode
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}
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currEpoch := db.epochState.CurrentEpoch()
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err = db.boltDB.Batch(func(tx *bbolt.Tx) error {
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exists, err := db.exists(tx, prm.addr, currEpoch)
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if !exists || err != nil {
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return err
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}
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return updateStorageID(tx, prm.addr, prm.id)
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})
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return
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}
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