102 lines
1.9 KiB
Go
102 lines
1.9 KiB
Go
package meta
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import (
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"encoding/binary"
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"strings"
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cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
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"go.etcd.io/bbolt"
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)
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func (db *DB) Containers() (list []*cid.ID, err error) {
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err = db.boltDB.View(func(tx *bbolt.Tx) error {
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list, err = db.containers(tx)
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return err
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})
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return list, err
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}
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func (db *DB) containers(tx *bbolt.Tx) ([]*cid.ID, error) {
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result := make([]*cid.ID, 0)
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err := tx.ForEach(func(name []byte, _ *bbolt.Bucket) error {
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id, err := parseContainerID(name)
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if err != nil {
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return err
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}
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if id != nil {
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result = append(result, id)
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}
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return nil
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})
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return result, err
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}
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func (db *DB) ContainerSize(id *cid.ID) (size uint64, err error) {
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err = db.boltDB.Update(func(tx *bbolt.Tx) error {
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size, err = db.containerSize(tx, id)
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return err
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})
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return size, err
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}
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func (db *DB) containerSize(tx *bbolt.Tx, id *cid.ID) (uint64, error) {
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containerVolume, err := tx.CreateBucketIfNotExists(containerVolumeBucketName)
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if err != nil {
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return 0, err
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}
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key := id.ToV2().GetValue()
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return parseContainerSize(containerVolume.Get(key)), nil
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}
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func parseContainerID(name []byte) (*cid.ID, error) {
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strName := string(name)
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if strings.Contains(strName, invalidBase58String) {
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return nil, nil
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}
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id := cid.New()
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return id, id.Parse(strName)
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}
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func parseContainerSize(v []byte) uint64 {
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if len(v) == 0 {
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return 0
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}
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return binary.LittleEndian.Uint64(v)
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}
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func changeContainerSize(tx *bbolt.Tx, id *cid.ID, delta uint64, increase bool) error {
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containerVolume, err := tx.CreateBucketIfNotExists(containerVolumeBucketName)
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if err != nil {
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return err
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}
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key := id.ToV2().GetValue()
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size := parseContainerSize(containerVolume.Get(key))
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if increase {
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size += delta
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} else if size > delta {
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size -= delta
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} else {
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size = 0
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}
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buf := make([]byte, 8) // consider using sync.Pool to decrease allocations
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binary.LittleEndian.PutUint64(buf, size)
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return containerVolume.Put(key, buf)
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}
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