[#189] sdk/netmap: Implement NodeInfo JSON encode/decode functions

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

pkg/netmap/node_info.go

@@ -214,6 +214,21 @@ func NewNodeInfoFromV2(i *netmap.NodeInfo) *NodeInfo {
 	return (*NodeInfo)(i)
 }
 
+// NodeInfoToJSON encodes NodeInfo to JSON format.
+func NodeInfoToJSON(i *NodeInfo) ([]byte, error) {
+	return netmap.NodeInfoToJSON(i.ToV2())
+}
+
+// NodeInfoFromJSON decodes NodeInfo from JSON-encoded data.
+func NodeInfoFromJSON(data []byte) (*NodeInfo, error) {
+	i, err := netmap.NodeInfoFromJSON(data)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewNodeInfoFromV2(i), nil
+}
+
 // ToV2 converts NodeInfo to v2 NodeInfo.
 func (i *NodeInfo) ToV2() *netmap.NodeInfo {
 	return (*netmap.NodeInfo)(i)

pkg/netmap/node_info_test.go

@@ -140,3 +140,19 @@ func TestNodeInfo_Attributes(t *testing.T) {
 
 	require.Equal(t, as, i.Attributes())
 }
+
+func TestNodeInfoJSON(t *testing.T) {
+	i := NewNodeInfo()
+	i.SetPublicKey([]byte{1, 2, 3})
+	i.SetAddress("some node address")
+	i.SetState(NodeStateOnline)
+	i.SetAttributes(testNodeAttribute(), testNodeAttribute())
+
+	j, err := NodeInfoToJSON(i)
+	require.NoError(t, err)
+
+	i2, err := NodeInfoFromJSON(j)
+	require.NoError(t, err)
+
+	require.Equal(t, i, i2)
+}