[#43] Client: Memory optimization

Signed-off-by: Pavel Gross <p.gross@yadro.com>

src/FrostFS.SDK.Client/Models/Containers/FrostFsContainerInfo.cs

@@ -91,10 +91,13 @@ public class FrostFsContainerInfo
                 throw new ArgumentNullException("PlacementPolicy is null");
             }
 
+            Span<byte> nonce = stackalloc byte[16];
+            Nonce.ToBytes(nonce);
+
             this.container = new Container.Container()
             {
                 PlacementPolicy = PlacementPolicy.Value.GetPolicy(),
-                Nonce = ByteString.CopyFrom(Nonce.ToBytes()),
+                Nonce = ByteString.CopyFrom(nonce),
                 OwnerId = Owner?.OwnerID,
                 Version = Version?.VersionID
             };

src/FrostFS.SDK.Client/Models/Misc/CheckSum.cs

@@ -11,7 +11,7 @@ public class CheckSum
 
     public static CheckSum CreateCheckSum(byte[] content)
     {
-        return new CheckSum { hash = content.Sha256() };
+        return new CheckSum { hash = DataHasher.Sha256(content.AsSpan()) };
     }
 
     public override string ToString()

src/FrostFS.SDK.Client/Models/Netmap/Placement/Context.cs

@@ -353,7 +353,7 @@ internal struct Context
 
                     var start = hasPrefix ? likeWildcard.Length : 0;
                     var end = hasSuffix ? f.Value.Length - likeWildcard.Length : f.Value.Length;
-                    var str = f.Value.Substring(start, end-start);
+                    var str = f.Value.Substring(start, end - start);
 
                     if (hasPrefix && hasSuffix)
                         return nodeInfo.Attributes[f.Key].Contains(str);

src/FrostFS.SDK.Client/Models/Object/FrostFsObject.cs

@@ -4,10 +4,6 @@ namespace FrostFS.SDK;
 
 public class FrostFsObject
 {
-  //  private byte[]? _payloadBytes;
-  //  private ReadOnlyMemory<byte> _payloadMemory;
-  //  private bool _isInitPayloadMemory;
-
     /// <summary>
     /// Creates new instance from <c>ObjectHeader</c>
     /// </summary>
@@ -49,25 +45,6 @@ public class FrostFsObject
 
     public ReadOnlyMemory<byte> SingleObjectPayload { get; set; }
 
-    //public ReadOnlyMemory<byte> SingleObjectPayloadMemory
-    //{
-    //    get
-    //    {
-    //        if (!_isInitPayloadMemory)
-    //        {
-    //            _payloadMemory = _payloadBytes.AsMemory();
-    //            _isInitPayloadMemory = true;
-    //        }
-
-    //        return _payloadMemory;
-    //    }
-    //    set
-    //    {
-    //        _payloadMemory = value;
-    //        _isInitPayloadMemory = true;
-    //    }
-    //}
-
     /// <summary>
     /// Provide SHA256 hash of the payload. If null, the hash is calculated by internal logic
     /// </summary>

src/FrostFS.SDK.Client/Models/Object/FrostFsSplit.cs

@@ -1,4 +1,7 @@
 using System.Collections.ObjectModel;
+using System.Linq;
+using FrostFS.Object;
+using FrostFS.SDK.Client.Mappers.GRPC;
 
 namespace FrostFS.SDK;
 
@@ -9,6 +12,8 @@ public class FrostFsSplit(SplitId splitId,
     FrostFsSignature? parentSignature = null,
     ReadOnlyCollection<FrostFsObjectId>? children = null)
 {
+    private Header.Types.Split? _split;
+
     public FrostFsSplit() : this(new SplitId())
     {
     }
@@ -24,4 +29,25 @@ public class FrostFsSplit(SplitId splitId,
     public FrostFsObjectHeader? ParentHeader { get; set; } = parentHeader;
 
     public ReadOnlyCollection<FrostFsObjectId>? Children { get; } = children;
+
+    public Header.Types.Split GetSplit()
+    {
+        if (_split == null)
+        {
+            _split = new Header.Types.Split
+            {
+                SplitId = SplitId?.GetSplitId(),
+                Parent = Parent?.ToMessage(),
+                ParentHeader = ParentHeader?.GetHeader(),
+                ParentSignature = ParentSignature?.ToMessage()
+            };
+
+            if (Children != null)
+            {
+                _split.Children.AddRange(Children.Select(x => x.ToMessage()));
+            }
+        }
+
+        return _split;
+    }
 }

src/FrostFS.SDK.Client/Models/Object/SplitId.cs

@@ -47,16 +47,11 @@ public class SplitId
         return this.id.ToString();
     }
 
-    public byte[]? ToBinary()
-    {
-        if (this.id == Guid.Empty)
-            return null;
-
-        return this.id.ToBytes();
-    }
-
     public ByteString? GetSplitId()
     {
-        return this.message ??= ByteString.CopyFrom(ToBinary());
+        Span<byte> span = stackalloc byte[16];
+        id.ToBytes(span);
+
+        return this.message ??= ByteString.CopyFrom(span);
     }
 }

src/FrostFS.SDK.Client/Models/Response/FrostFsResponseStatus.cs

@@ -4,9 +4,9 @@ public class FrostFsResponseStatus(FrostFsStatusCode code, string? message = nul
 {
     public FrostFsStatusCode Code { get; set; } = code;
     public string Message { get; set; } = message ?? string.Empty;
-    
+
     public string Details { get; set; } = details ?? string.Empty;
-    
+
     public bool IsSuccess => Code == FrostFsStatusCode.Success;
 
     public override string ToString()