Function NewMapWithOptions

internal/bigmap/bigmap_map.go:95–126

NewMapWithOptions creates new Map with options.

(ctx context.Context, opt *Options)

// NewMapWithOptions creates new Map with options.
func NewMapWithOptions(ctx context.Context, opt *Options) (*Map, error) {
	inner, err := newInternalMapWithOptions(ctx, true, opt)
	if err != nil {
		return nil, err
	}

	key := make([]byte, aesKeySize)

	if _, err = rand.Read(key); err != nil {
		return nil, errors.Wrap(err, "error initializing map key")
	}

	enc, err := aes.NewCipher(key)
	if err != nil {
		return nil, errors.Wrap(err, "error initializing map cipher")
	}

	aead, err := cipher.NewGCM(enc)
	if err != nil {
		return nil, errors.Wrap(err, "error initializing map AEAD")
	}

	if aead.NonceSize() != aesNonceSize {
		return nil, errors.Errorf("unexpected nonce size: %v, expected %v", aead.NonceSize(), aesNonceSize)
	}

	return &Map{
		aead:      aead,
		inner:     inner,
		nextNonce: new(uint64),
	}, nil
}