[#168] refs: Implement binary/JSON encoders/decoders on ContainerID

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

v2/refs/json.go

@@ -44,3 +44,23 @@ func (o *ObjectID) UnmarshalJSON(data []byte) error {
 
 	return nil
 }
+
+func (c *ContainerID) MarshalJSON() ([]byte, error) {
+	return protojson.MarshalOptions{
+		EmitUnpopulated: true,
+	}.Marshal(
+		ContainerIDToGRPCMessage(c),
+	)
+}
+
+func (c *ContainerID) UnmarshalJSON(data []byte) error {
+	msg := new(refs.ContainerID)
+
+	if err := protojson.Unmarshal(data, msg); err != nil {
+		return err
+	}
+
+	*c = *ContainerIDFromGRPCMessage(msg)
+
+	return nil
+}

v2/refs/json_test.go

@@ -31,3 +31,16 @@ func TestObjectIDJSON(t *testing.T) {
 
 	require.Equal(t, o, o2)
 }
+
+func TestContainerIDJSON(t *testing.T) {
+	cid := new(refs.ContainerID)
+	cid.SetValue([]byte{1})
+
+	data, err := cid.MarshalJSON()
+	require.NoError(t, err)
+
+	cid2 := new(refs.ContainerID)
+	require.NoError(t, cid2.UnmarshalJSON(data))
+
+	require.Equal(t, cid, cid2)
+}

v2/refs/marshal.go

@@ -76,6 +76,17 @@ func (c *ContainerID) StableSize() int {
 	return proto.BytesSize(containerIDValField, c.val)
 }
 
+func (c *ContainerID) Unmarshal(data []byte) error {
+	m := new(refs.ContainerID)
+	if err := goproto.Unmarshal(data, m); err != nil {
+		return err
+	}
+
+	*c = *ContainerIDFromGRPCMessage(m)
+
+	return nil
+}
+
 func (o *ObjectID) StableMarshal(buf []byte) ([]byte, error) {
 	if o == nil {
 		return []byte{}, nil

v2/refs/marshal_test.go

@@ -29,7 +29,6 @@ func TestOwnerID_StableMarshal(t *testing.T) {
 
 func TestContainerID_StableMarshal(t *testing.T) {
 	cnrFrom := new(refs.ContainerID)
-	cnrTransport := new(grpc.ContainerID)
 
 	t.Run("non empty", func(t *testing.T) {
 		cnrFrom.SetValue([]byte("Container ID"))
@@ -37,10 +36,9 @@ func TestContainerID_StableMarshal(t *testing.T) {
 		wire, err := cnrFrom.StableMarshal(nil)
 		require.NoError(t, err)
 
-		err = goproto.Unmarshal(wire, cnrTransport)
-		require.NoError(t, err)
+		cnrTo := new(refs.ContainerID)
+		require.NoError(t, cnrTo.Unmarshal(wire))
 
-		cnrTo := refs.ContainerIDFromGRPCMessage(cnrTransport)
 		require.Equal(t, cnrFrom, cnrTo)
 	})
 }