src/FrostFS.SDK.ClientV2/Mappers/GRPC/Object.cs

@@ -3,6 +3,23 @@ using FrostFS.SDK.ModelsV2;
 
 namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
 
+public static class ObjectAttributeMapper
+{
+    public static Header.Types.Attribute ToGrpcMessage(this ObjectAttribute attribute)
+    {
+        return new Header.Types.Attribute
+        {
+            Key = attribute.Key,
+            Value = attribute.Value
+        };
+    }
+
+    public static ObjectAttribute ToModel(this Header.Types.Attribute attribute)
+    {
+        return new ObjectAttribute(attribute.Key, attribute.Value);
+    }
+}
+
 public static class ObjectHeadMapper
 {
     public static Header ToGrpcMessage(this ObjectHeader header)
@@ -12,11 +29,19 @@ public static class ObjectHeadMapper
         {
             throw new ArgumentException($"Unknown ObjectType. Value: '{header.ObjectType}'.");
         }
-        return new Header
+
+        var head = new Header
         {
+            Attributes = { },
             ContainerId = header.ContainerId.ToGrpcMessage(),
             ObjectType = Enum.Parse<ObjectType>(objTypeName)
         };
+        foreach (var attribute in header.Attributes)
+        {
+            head.Attributes.Add(attribute.ToGrpcMessage());
+        }
+
+        return head;
     }
 
     public static ObjectHeader ToModel(this Header header)
@@ -26,13 +51,21 @@ public static class ObjectHeadMapper
         {
             throw new ArgumentException($"Unknown ObjectType. Value: '{header.ObjectType}'.");
         }
+
+        var attributes = new List<ObjectAttribute>();
+        foreach (var attribute in header.Attributes)
+        {
+            attributes.Add(attribute.ToModel());
+        }
+
         return new ObjectHeader(
             ContainerId.FromHash(header.ContainerId.Value.ToByteArray()),
-            Enum.Parse<ModelsV2.Enums.ObjectType>(objTypeName)
+            Enum.Parse<ModelsV2.Enums.ObjectType>(objTypeName),
+            attributes.ToArray()
         )
         {
             Size = (long)header.PayloadLength,
             Version = header.Version.ToModel()
         };
     }
-}
+}

src/FrostFS.SDK.ModelsV2/Object.cs

@@ -2,15 +2,33 @@ using FrostFS.SDK.ModelsV2.Enums;
 
 namespace FrostFS.SDK.ModelsV2;
 
+public class ObjectAttribute
+{
+    public string Key { get; set; }
+    public string Value { get; set; }
+
+    public ObjectAttribute(string key, string value)
+    {
+        Key = key;
+        Value = value;
+    }
+}
+
 public class ObjectHeader
 {
+    public ObjectAttribute[] Attributes { get; set; }
     public ContainerId ContainerId { get; set; }
     public long Size { get; set; }
     public ObjectType ObjectType { get; set; }
     public Version Version { get; set; }
 
-    public ObjectHeader(ContainerId containerId, ObjectType type = ObjectType.Regular)
+    public ObjectHeader(
+        ContainerId containerId,
+        ObjectType type = ObjectType.Regular,
+        params ObjectAttribute[] attributes
+    )
     {
+        Attributes = attributes;
         ContainerId = containerId;
         ObjectType = type;
     }