forked from TrueCloudLab/frostfs-node
73 lines
1.9 KiB
Go
73 lines
1.9 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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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
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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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// IsSmallPrm groups the parameters of IsSmall operation.
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type IsSmallPrm struct {
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addr oid.Address
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}
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// IsSmallRes groups the resulting values of IsSmall operation.
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type IsSmallRes struct {
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id *blobovnicza.ID
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}
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// WithAddress is a IsSmall option to set the object address to check.
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func (p *IsSmallPrm) WithAddress(addr oid.Address) {
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if p != nil {
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p.addr = addr
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}
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}
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// BlobovniczaID returns blobovnicza identifier.
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func (r IsSmallRes) BlobovniczaID() *blobovnicza.ID {
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return r.id
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}
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// IsSmall wraps work with DB.IsSmall method with specified
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// address and other parameters by default. Returns only
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// the blobovnicza identifier.
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func IsSmall(db *DB, addr oid.Address) (*blobovnicza.ID, error) {
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var isSmallPrm IsSmallPrm
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isSmallPrm.WithAddress(addr)
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r, err := db.IsSmall(isSmallPrm)
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if err != nil {
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return nil, err
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}
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return r.BlobovniczaID(), nil
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}
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// IsSmall returns blobovniczaID for small objects and nil for big objects.
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// Small objects stored in blobovnicza instances. Big objects stored in FS by
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// shallow path which is calculated from address and therefore it is not
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// indexed in metabase.
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func (db *DB) IsSmall(prm IsSmallPrm) (res IsSmallRes, err error) {
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err = db.boltDB.View(func(tx *bbolt.Tx) error {
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res.id, err = db.isSmall(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) isSmall(tx *bbolt.Tx, addr oid.Address) (*blobovnicza.ID, error) {
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smallBucket := tx.Bucket(smallBucketName(addr.Container()))
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if smallBucket == nil {
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return nil, nil
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}
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blobovniczaID := smallBucket.Get(objectKey(addr.Object()))
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if len(blobovniczaID) == 0 {
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return nil, nil
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}
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return blobovnicza.NewIDFromBytes(slice.Copy(blobovniczaID)), nil
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}
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