Add Inner Ring code

pkg/local_object_storage/bucket/boltdb/methods.go

@@ -0,0 +1,94 @@
+package boltdb
+
+import (
+	"os"
+
+	"github.com/mr-tron/base58"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/bucket"
+	"github.com/pkg/errors"
+	"go.etcd.io/bbolt"
+)
+
+// Get value by key or return error.
+func (b *boltBucket) Get(key []byte) (data []byte, err error) {
+	err = b.db.View(func(txn *bbolt.Tx) error {
+		txn.Bucket(b.name).Cursor().Seek(key)
+		val := txn.Bucket(b.name).Get(key)
+		if val == nil {
+			return errors.Wrapf(bucket.ErrNotFound, "key=%s", base58.Encode(key))
+		}
+
+		data = makeCopy(val)
+		return nil
+	})
+
+	return
+}
+
+// Set value for key.
+func (b *boltBucket) Set(key, value []byte) error {
+	return b.db.Update(func(txn *bbolt.Tx) error {
+		k, v := makeCopy(key), makeCopy(value)
+		return txn.Bucket(b.name).Put(k, v)
+	})
+}
+
+// Del removes item from bucket by key.
+func (b *boltBucket) Del(key []byte) error {
+	return b.db.Update(func(txn *bbolt.Tx) error {
+		return txn.Bucket(b.name).Delete(key)
+	})
+}
+
+// Has checks key exists.
+func (b *boltBucket) Has(key []byte) bool {
+	_, err := b.Get(key)
+	return !errors.Is(errors.Cause(err), bucket.ErrNotFound)
+}
+
+// Size returns size of database.
+func (b *boltBucket) Size() int64 {
+	info, err := os.Stat(b.db.Path())
+	if err != nil {
+		return 0
+	}
+
+	return info.Size()
+}
+
+// List all items in bucket.
+func (b *boltBucket) List() ([][]byte, error) {
+	var items [][]byte
+
+	if err := b.db.View(func(txn *bbolt.Tx) error {
+		return txn.Bucket(b.name).ForEach(func(k, _ []byte) error {
+			items = append(items, makeCopy(k))
+			return nil
+		})
+	}); err != nil {
+		return nil, err
+	}
+
+	return items, nil
+}
+
+// Filter elements by filter closure.
+func (b *boltBucket) Iterate(handler bucket.FilterHandler) error {
+	if handler == nil {
+		return bucket.ErrNilFilterHandler
+	}
+
+	return b.db.View(func(txn *bbolt.Tx) error {
+		return txn.Bucket(b.name).ForEach(func(k, v []byte) error {
+			if !handler(makeCopy(k), makeCopy(v)) {
+				return bucket.ErrIteratingAborted
+			}
+			return nil
+		})
+	})
+}
+
+// Close bucket database.
+func (b *boltBucket) Close() error {
+	return b.db.Close()
+}