[#14] Add interceptors

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

src/FrostFS.SDK.ClientV2/Client.cs

@@ -7,11 +7,13 @@ using FrostFS.SDK.ModelsV2;
 using FrostFS.SDK.ModelsV2.Netmap;
 using FrostFS.Session;
 using Grpc.Core;
+using Grpc.Core.Interceptors;
 using Grpc.Net.Client;
 using Microsoft.Extensions.Options;
 using System;
 using System.Collections.Generic;
 using System.Net.Http;
+using System.Security.Cryptography;
 using System.Threading.Tasks;
 using Version = FrostFS.SDK.ModelsV2.Version;
 
@@ -20,10 +22,15 @@ namespace FrostFS.SDK.ClientV2;
 public class Client : IFrostFSClient
 {
     private bool isDisposed;
+  
+    internal ContainerService.ContainerServiceClient? ContainerServiceClient { get; set; }
+    internal NetmapService.NetmapServiceClient? NetmapServiceClient { get; set; }
+    internal SessionService.SessionServiceClient? SessionServiceClient { get; set; }
+    internal ObjectService.ObjectServiceClient? ObjectServiceClient { get; set; }
 
     internal ClientEnvironment ClientCtx { get; set; }
 
-    public static IFrostFSClient GetInstance(IOptions<ClientSettings> clientOptions, GrpcChannelOptions channelOptions)
+    public static IFrostFSClient GetInstance(IOptions<ClientSettings> clientOptions, GrpcChannelOptions? channelOptions = null)
     {
         return new Client(clientOptions, channelOptions);
     }
@@ -32,7 +39,7 @@ public class Client : IFrostFSClient
     /// For test only. Provide custom implementation or mock object to inject required logic instead of internal gRPC client.
     /// </summary>
     /// <param name="clientOptions">Global setting for client</param>
-    /// <param name="channelOptions">Setting for gRPC cjannel</param>
+    /// <param name="channelOptions">Setting for gRPC channel</param>
     /// <param name="containerService">ContainerService.ContainerServiceClient implementation</param>
     /// <param name="netmapService">Netmap.NetmapService.NetmapServiceClient implementation</param>
     /// <param name="sessionService">Session.SessionService.SessionServiceClient implementation</param>
@@ -61,18 +68,19 @@ public class Client : IFrostFSClient
         OwnerId.FromKey(ecdsaKey);
 
         ClientCtx = new ClientEnvironment(
+           this,
            key: ecdsaKey,
            owner: OwnerId.FromKey(ecdsaKey),
            channel: InitGrpcChannel(settings.Value.Host, channelOptions),
            version: new Version(2, 13));
 
-        ClientCtx.ContainerService = new ContainerServiceProvider(containerService, ClientCtx);
-        ClientCtx.NetmapService = new NetmapServiceProvider(netmapService, ClientCtx);
-        ClientCtx.SessionService = new SessionServiceProvider(sessionService, ClientCtx);
-        ClientCtx.ObjectService = new ObjectServiceProvider(objectService, ClientCtx);
+        ContainerServiceClient = containerService;
+        NetmapServiceClient = netmapService;
+        SessionServiceClient = sessionService;
+        ObjectServiceClient = objectService;
     }
 
-    private Client(IOptions<ClientSettings> options, GrpcChannelOptions channelOptions)
+    private Client(IOptions<ClientSettings> options, GrpcChannelOptions? channelOptions)
     {
         var clientSettings = (options?.Value) ?? throw new ArgumentException("Options must be initialized");
 
@@ -83,16 +91,12 @@ public class Client : IFrostFSClient
         var channel = InitGrpcChannel(clientSettings.Host, channelOptions);
 
         ClientCtx = new ClientEnvironment(
+            this,
             key: ecdsaKey,
             owner: OwnerId.FromKey(ecdsaKey),
             channel: channel,
             version: new Version(2, 13));
 
-        ClientCtx.ContainerService = new ContainerServiceProvider(new ContainerService.ContainerServiceClient(channel), ClientCtx);
-        ClientCtx.NetmapService = new NetmapServiceProvider(new NetmapService.NetmapServiceClient(channel), ClientCtx);
-        ClientCtx.SessionService = new SessionServiceProvider(new SessionService.SessionServiceClient(channel), ClientCtx);
-        ClientCtx.ObjectService = new ObjectServiceProvider(new ObjectService.ObjectServiceClient(channel), ClientCtx);
-
         CheckFrostFsVersionSupport();
     }
 
@@ -111,72 +115,81 @@ public class Client : IFrostFSClient
         }
     }
 
-    public GrpcChannel Channel => ClientCtx.Channel;
-
+    #region ContainerImplementation
     public Task<ModelsV2.Container> GetContainerAsync(ContainerId containerId, Context? ctx = null)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ContainerService!.GetContainerAsync(containerId, ctx!);
+        var service = GetContainerService(ref ctx);
+        return service.GetContainerAsync(containerId, ctx!);
     }
 
     public IAsyncEnumerable<ContainerId> ListContainersAsync(Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);      
-        return ClientCtx.ContainerService!.ListContainersAsync(ctx!);
+        var service = GetContainerService(ref ctx);      
+        return service.ListContainersAsync(ctx!);
     }
 
     public Task<ContainerId> CreateContainerAsync(ModelsV2.Container container, Context? ctx = null)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ContainerService!.CreateContainerAsync(container, ctx!);
+        var service = GetContainerService(ref ctx);
+        return service.CreateContainerAsync(container, ctx!);
     }
 
     public Task DeleteContainerAsync(ContainerId containerId, Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ContainerService!.DeleteContainerAsync(containerId, ctx!);
+        var service = GetContainerService(ref ctx);
+        return service.DeleteContainerAsync(containerId, ctx!);
     }
+    #endregion
 
+    #region NetworkImplementation
     public Task<NetmapSnapshot> GetNetmapSnapshotAsync(Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.NetmapService!.GetNetmapSnapshotAsync(ctx!);
+        var service = GetNetmapService(ref ctx);
+        return service.GetNetmapSnapshotAsync(ctx!);
     }
 
     public Task<ModelsV2.Netmap.NodeInfo> GetNodeInfoAsync(Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.NetmapService!.GetLocalNodeInfoAsync(ctx!);
+        var service = GetNetmapService(ref ctx);
+        return service.GetLocalNodeInfoAsync(ctx!);
     }
 
+    public Task<NetworkSettings> GetNetworkSettingsAsync(Context? ctx = default)
+    { 
+        var service = GetNetmapService(ref ctx);
+        return service.GetNetworkSettingsAsync(ctx!);
+    }
+    #endregion
+
+    #region ObjectImplementation
     public Task<ObjectHeader> GetObjectHeadAsync(ContainerId containerId, ObjectId objectId, Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ObjectService!.GetObjectHeadAsync(containerId, objectId, ctx!);
+        var service = GetObjectService(ref ctx);
+        return service.GetObjectHeadAsync(containerId, objectId, ctx!);
     }
 
     public Task<ModelsV2.Object> GetObjectAsync(ContainerId containerId, ObjectId objectId, Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ObjectService!.GetObjectAsync(containerId, objectId, ctx!);
+        var service = GetObjectService(ref ctx);
+        return service.GetObjectAsync(containerId, objectId, ctx!);
     }
 
     public Task<ObjectId> PutObjectAsync(PutObjectParameters putObjectParameters, Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ObjectService!.PutObjectAsync(putObjectParameters, ctx!);
+        var service = GetObjectService(ref ctx);
+        return service.PutObjectAsync(putObjectParameters, ctx!);
     }
 
     public Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object obj, Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ObjectService!.PutSingleObjectAsync(obj, ctx!);
+        var service = GetObjectService(ref ctx);
+        return service.PutSingleObjectAsync(obj, ctx!);
     }
 
     public Task DeleteObjectAsync(ContainerId containerId, ObjectId objectId, Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ObjectService!.DeleteObjectAsync(containerId, objectId, ctx!);
+        var service = GetObjectService(ref ctx);
+        return service.DeleteObjectAsync(containerId, objectId, ctx!);
     }
 
     public IAsyncEnumerable<ObjectId> SearchObjectsAsync(
@@ -184,19 +197,38 @@ public class Client : IFrostFSClient
         IEnumerable<ObjectFilter> filters,
         Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        return ClientCtx.ObjectService!.SearchObjectsAsync(containerId, filters, ctx!);
+        var service = GetObjectService(ref ctx);
+        return service.SearchObjectsAsync(containerId, filters, ctx!);
+    }
+    #endregion
+
+    #region SessionImplementation
+    public async Task<ModelsV2.SessionToken> CreateSessionAsync(ulong expiration, Context? ctx = null)
+    {
+        var session = await CreateSessionInternalAsync(expiration, ctx);
+        var token = session.Serialize();
+        
+        return new ModelsV2.SessionToken([], token);
     }
 
+    public Task<Session.SessionToken> CreateSessionInternalAsync(ulong expiration, Context? ctx = null)
+    {
+        var service = GetSessionService(ref ctx);
+        return service.CreateSessionAsync(expiration, ctx!);
+    }    
+    #endregion
+
+    #region ToolsImplementation
     public ObjectId CalculateObjectId(ObjectHeader header)
-    { 
-        return ClientCtx.ObjectService!.CalculateObjectId(header);
+    {
+        return new ObjectTools(ClientCtx).CalculateObjectId(header);
     }
+    #endregion
 
     private async void CheckFrostFsVersionSupport(Context? ctx = default)
     {
-        ValidateEnvironment(ref ctx);
-        var localNodeInfo = await ClientCtx.NetmapService!.GetLocalNodeInfoAsync(ctx!);
+        var service = GetNetmapService(ref ctx);
+        var localNodeInfo = await service.GetLocalNodeInfoAsync(ctx!);
       
         if (!localNodeInfo.Version.IsSupported(ClientCtx.Version))
         {
@@ -206,15 +238,76 @@ public class Client : IFrostFSClient
         }
     }
 
-    private void ValidateEnvironment(ref Context? ctx)
+    private CallInvoker? SetupEnvironment(ref Context? ctx)
     {
         if (isDisposed)
             throw new Exception("Client is disposed.");
 
-        if (ClientCtx == null || !ClientCtx.Initialized)
-            throw new Exception("Client is not initialized.");
-
         ctx ??= new Context();
+
+        CallInvoker? callInvoker = null;
+        if (ctx.Interceptors != null && ctx.Interceptors.Count > 0)
+        {
+            foreach (var interceptor in ctx.Interceptors)
+            {
+                callInvoker = AddInvoker(callInvoker, interceptor);
+            }
+        }
+
+        if (ctx.Callback != null)
+            callInvoker = AddInvoker(callInvoker, new MetricsInterceptor(ctx.Callback));
+        
+        return callInvoker;
+
+        CallInvoker AddInvoker(CallInvoker? callInvoker, Interceptor interceptor)
+        {
+            if (callInvoker == null)
+                callInvoker = ClientCtx.Channel.Intercept(interceptor);
+            else
+                callInvoker.Intercept(interceptor);
+
+            return callInvoker;
+        }
+    }
+
+    private NetmapServiceProvider GetNetmapService(ref Context? ctx)
+    {
+        var callInvoker = SetupEnvironment(ref ctx);
+        var client = NetmapServiceClient ?? (callInvoker != null
+            ? new NetmapService.NetmapServiceClient(callInvoker)
+            : new NetmapService.NetmapServiceClient(ClientCtx.Channel));
+
+        return new NetmapServiceProvider(client, ClientCtx);
+    }
+
+    private SessionServiceProvider GetSessionService(ref Context? ctx)
+    {
+        var callInvoker = SetupEnvironment(ref ctx);
+        var client = SessionServiceClient ?? (callInvoker != null
+            ? new SessionService.SessionServiceClient(callInvoker)
+            : new SessionService.SessionServiceClient(ClientCtx.Channel));
+
+        return new SessionServiceProvider(client, ClientCtx);
+    }
+
+    private ContainerServiceProvider GetContainerService(ref Context? ctx)
+    {
+        var callInvoker = SetupEnvironment(ref ctx);        
+        var client = ContainerServiceClient ?? (callInvoker != null
+            ? new ContainerService.ContainerServiceClient(callInvoker)
+            : new ContainerService.ContainerServiceClient(ClientCtx.Channel));
+
+        return new ContainerServiceProvider(client, ClientCtx);
+    }
+
+    private ObjectServiceProvider GetObjectService(ref Context? ctx)
+    {
+        var callInvoker = SetupEnvironment(ref ctx);
+        var client = ObjectServiceClient ?? (callInvoker != null
+            ? new ObjectService.ObjectServiceClient(callInvoker)
+            : new ObjectService.ObjectServiceClient(ClientCtx.Channel));
+
+        return new ObjectServiceProvider(client, ClientCtx);
     }
 
     private static GrpcChannel InitGrpcChannel(string host, GrpcChannelOptions? channelOptions)
@@ -230,21 +323,14 @@ public class Client : IFrostFSClient
             throw new ArgumentException(msg);
         }
 
-        ChannelCredentials grpcCredentials = uri.Scheme switch
-        {
-            "https" => ChannelCredentials.SecureSsl,
-            "http" => ChannelCredentials.Insecure,
-            _ => throw new ArgumentException($"Host '{host}' has invalid URI scheme: '{uri.Scheme}'.")
-        };
-
         if (channelOptions != null)
         {
             return GrpcChannel.ForAddress(uri, channelOptions);
         }
-         
+
+
         return GrpcChannel.ForAddress(uri, new GrpcChannelOptions
         {
-            Credentials = grpcCredentials,
             HttpHandler = new HttpClientHandler()
         });
     }

src/FrostFS.SDK.ClientV2/Interceptors/MetricsInterceptor.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Diagnostics;
+using System.Threading.Tasks;
+using FrostFS.SDK.ModelsV2;
+using Grpc.Core;
+using Grpc.Core.Interceptors;
+
+namespace FrostFS.SDK.ClientV2;
+
+public class MetricsInterceptor(Action<CallStatistics> callback) : Interceptor
+{
+    public override AsyncUnaryCall<TResponse> AsyncUnaryCall<TRequest, TResponse>(
+        TRequest request,
+        ClientInterceptorContext<TRequest, TResponse> context,
+        AsyncUnaryCallContinuation<TRequest, TResponse> continuation)
+    {
+        var call = continuation(request, context);
+
+        return new AsyncUnaryCall<TResponse>(
+            HandleUnaryResponse(call),
+            call.ResponseHeadersAsync,
+            call.GetStatus,
+            call.GetTrailers,
+            call.Dispose);
+    }
+
+    public override AsyncClientStreamingCall<TRequest, TResponse> AsyncClientStreamingCall<TRequest, TResponse>(
+        ClientInterceptorContext<TRequest, TResponse> context,
+        AsyncClientStreamingCallContinuation<TRequest, TResponse> continuation)
+    {
+         var call = continuation(context);
+
+        return new AsyncClientStreamingCall<TRequest, TResponse>(
+            call.RequestStream,
+            HandleStreamResponse(call),
+            call.ResponseHeadersAsync,
+            call.GetStatus,
+            call.GetTrailers,
+            call.Dispose);
+    }
+
+    private async Task<TResponse> HandleUnaryResponse<TResponse>(AsyncUnaryCall<TResponse> call)
+    {
+        var watch = new Stopwatch();
+        watch.Start();
+      
+        var response = await call.ResponseAsync;
+
+        watch.Stop();
+
+        var elapsed = watch.ElapsedTicks * 1_000_000/Stopwatch.Frequency;
+
+        callback(new CallStatistics { MethodName = call.ToString(), ElapsedMicroSeconds = elapsed });
+
+        return response;    
+    }
+
+    private async Task<TResponse> HandleStreamResponse<TRequest, TResponse>(AsyncClientStreamingCall<TRequest, TResponse> call)
+    {
+        var watch = new Stopwatch();
+        watch.Start();
+      
+        var response = await call.ResponseAsync;
+
+        watch.Stop();
+
+        var elapsed = watch.ElapsedTicks * 1_000_000/Stopwatch.Frequency;
+
+        callback(new CallStatistics { MethodName = call.ToString(), ElapsedMicroSeconds = elapsed });
+
+        return response;    
+    }
+}

src/FrostFS.SDK.ClientV2/Interfaces/IFrostFSClient.cs

@@ -4,12 +4,24 @@ using System.Threading.Tasks;
 
 using FrostFS.SDK.ModelsV2;
 using FrostFS.SDK.ModelsV2.Netmap;
-using Grpc.Net.Client;
 
 namespace FrostFS.SDK.ClientV2.Interfaces;
 
 public interface IFrostFSClient : IDisposable
 {
+    #region Network
+    Task<NetmapSnapshot> GetNetmapSnapshotAsync(Context? context = default);
+
+    Task<NodeInfo> GetNodeInfoAsync(Context? context = default);
+
+    Task<NetworkSettings> GetNetworkSettingsAsync(Context? context = default);
+    #endregion
+
+    #region Session
+    Task<SessionToken> CreateSessionAsync(ulong expiration, Context? context = default);
+    #endregion
+
+    #region Container
     Task<ModelsV2.Container> GetContainerAsync(ContainerId containerId, Context? context = default);
 
     IAsyncEnumerable<ContainerId> ListContainersAsync(Context? context = default);
@@ -17,7 +29,9 @@ public interface IFrostFSClient : IDisposable
     Task<ContainerId> CreateContainerAsync(ModelsV2.Container container, Context? context = default);
 
     Task DeleteContainerAsync(ContainerId containerId, Context? context = default);
-
+    #endregion
+    
+    #region Object
     Task<ObjectHeader> GetObjectHeadAsync(ContainerId containerId, ObjectId objectId, Context? context = default);
 
     Task<ModelsV2.Object> GetObjectAsync(ContainerId containerId, ObjectId objectId, Context? context = default);
@@ -29,13 +43,10 @@ public interface IFrostFSClient : IDisposable
     Task DeleteObjectAsync(ContainerId containerId, ObjectId objectId, Context? context = default);
 
     IAsyncEnumerable<ObjectId> SearchObjectsAsync(ContainerId cid, IEnumerable<ObjectFilter> filters, Context? context = default);
-
-    Task<NetmapSnapshot> GetNetmapSnapshotAsync(Context? context = default);
-
-    Task<NodeInfo> GetNodeInfoAsync(Context? context = default);
-
+    #endregion
+    
+    #region Tools
     ObjectId CalculateObjectId(ObjectHeader header);
-
-    GrpcChannel Channel { get; }
+    #endregion
 }
 

src/FrostFS.SDK.ClientV2/Mappers/Session/Session.cs

@@ -2,17 +2,17 @@
 using System;
 using Google.Protobuf;
 
-namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
+namespace FrostFS.SDK.ClientV2;
 
 public static class SessionMapper
 {
-    internal static string SerializeSessionToken(this Session.SessionToken token)
+    internal static byte[] Serialize(this Session.SessionToken token)
     {
         byte[] bytes = new byte[token.CalculateSize()];
         CodedOutputStream stream = new(bytes);
         token.WriteTo(stream);
 
-        return Convert.ToBase64String(bytes);
+        return bytes;
     }
 
     internal static Session.SessionToken DeserializeSessionToken(this byte[] bytes)

src/FrostFS.SDK.ClientV2/Services/ContainerServiceProvider.cs

@@ -80,10 +80,6 @@ internal class ContainerServiceProvider : ContextAccessor
         request.Sign(Context.Key);
 
         var response = await containerServiceClient.PutAsync(request, null, ctx.Deadline, ctx.CancellationToken);
-
-        //var response = await Context.InvokeAsyncUnaryWithMetrics(() =>
-        //    containerServiceClient.PutAsync(request, null, ctx.Deadline, ctx.CancellationToken),
-        //    nameof(containerServiceClient.PutAsync));
       
         Verifier.CheckResponse(response);
       

src/FrostFS.SDK.ClientV2/Services/ObjectServiceProvider.cs

@@ -1,12 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-
+using System.Threading.Tasks;
 
 using Google.Protobuf;
 
-using System.Threading.Tasks;
-
 using FrostFS.Object;
 using FrostFS.Refs;
 using FrostFS.SDK.ClientV2.Mappers.GRPC;
@@ -17,15 +15,9 @@ using FrostFS.SDK.ClientV2.Extensions;
 
 namespace FrostFS.SDK.ClientV2;
 
-internal class ObjectServiceProvider : ContextAccessor
+internal class ObjectServiceProvider(ObjectService.ObjectServiceClient client, ClientEnvironment ctx) : ContextAccessor(ctx)
 {
-    private readonly ObjectService.ObjectServiceClient objectServiceClient;
-    
-    internal ObjectServiceProvider(ObjectService.ObjectServiceClient objectServiceClient, ClientEnvironment context)
-        : base (context)
-    {
-        this.objectServiceClient = objectServiceClient;
-    }
+    readonly ObjectTools tools = new(ctx);
 
     internal async Task<ObjectHeader> GetObjectHeadAsync(ContainerId cid, ObjectId oid, Context ctx)
     {
@@ -44,7 +36,7 @@ internal class ObjectServiceProvider : ContextAccessor
         request.AddMetaHeader();
         request.Sign(Context.Key);
 
-        var response = await objectServiceClient!.HeadAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+        var response = await client!.HeadAsync(request, null, ctx.Deadline, ctx.CancellationToken);
         
         Verifier.CheckResponse(response);
 
@@ -97,45 +89,38 @@ internal class ObjectServiceProvider : ContextAccessor
             return PutStreamObject(parameters, ctx);
     }
    
-    internal async Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object @object, Context ctx)
+    internal async Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object modelObject, Context ctx)
     {
         var sessionToken = await GetOrCreateSession(ctx);
     
-        var obj = CreateObject(@object);
+        var grpcObject = tools.CreateObject(modelObject);
 
         var request = new PutSingleRequest
         {
             Body = new PutSingleRequest.Types.Body()
             {
-                 Object = obj 
+                 Object = grpcObject 
             }
         };
 
         request.AddMetaHeader();
         request.AddObjectSessionToken(
             sessionToken,
-            obj.Header.ContainerId,
-            obj.ObjectId,
+            grpcObject.Header.ContainerId,
+            grpcObject.ObjectId,
             ObjectSessionContext.Types.Verb.Put,
             Context.Key
         );
 
         request.Sign(Context.Key);
 
-        var response = await objectServiceClient!.PutSingleAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+        var response = await client.PutSingleAsync(request, null, ctx.Deadline, ctx.CancellationToken);
 
         Verifier.CheckResponse(response);
         
-        return ObjectId.FromHash(obj.ObjectId.Value.ToByteArray());
+        return ObjectId.FromHash(grpcObject.ObjectId.Value.ToByteArray());
     }
-
-    internal ObjectId CalculateObjectId(ObjectHeader header)
-    { 
-        var grpcHeader = CreateHeader(header, []);
-
-        return new ObjectID { Value = grpcHeader.Sha256() }.ToModel();        
-    }
-    
+ 
     internal async Task DeleteObjectAsync(ContainerId cid, ObjectId oid, Context ctx)
     {
         var request = new DeleteRequest
@@ -153,7 +138,7 @@ internal class ObjectServiceProvider : ContextAccessor
         request.AddMetaHeader();
         request.Sign(Context.Key);
 
-        var response = await objectServiceClient!.DeleteAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+        var response = await client.DeleteAsync(request, null, ctx.Deadline, ctx.CancellationToken);
         
         Verifier.CheckResponse(response);
     }
@@ -195,7 +180,7 @@ internal class ObjectServiceProvider : ContextAccessor
         List<ObjectId> sentObjectIds = [];
         ModelsV2.Object? currentObject;
 
-        var networkSettings = await Context.NetmapService!.GetNetworkSettingsAsync(ctx);
+        var networkSettings = await Context.Client.GetNetworkSettingsAsync(ctx);
 
         var partSize = (int)networkSettings.MaxObjectSize;
         var buffer = new byte[partSize];      
@@ -215,7 +200,6 @@ internal class ObjectServiceProvider : ContextAccessor
             largeObject.AppendBlock(buffer, bytesCount);
 
             currentObject = new ModelsV2.Object(header.ContainerId, bytesCount < partSize ? buffer.Take(bytesCount).ToArray() : buffer)
-                .AddAttributes(header.Attributes)
                 .SetSplit(split);
 
             if (largeObject.PayloadLength == fullLength)
@@ -228,6 +212,7 @@ internal class ObjectServiceProvider : ContextAccessor
 
         if (sentObjectIds.Count != 0)
         {
+            largeObject.AddAttributes(parameters.Header!.Attributes);
             largeObject.CalculateHash();
 
             currentObject.SetParent(largeObject);
@@ -238,11 +223,14 @@ internal class ObjectServiceProvider : ContextAccessor
             var linkObject = new LinkObject(header.ContainerId, split.SplitId, largeObject)
                 .AddChildren(sentObjectIds);
 
+            linkObject.Header.Attributes.Clear();
+
             _ = await PutSingleObjectAsync(linkObject, ctx);
 
-            return CalculateObjectId(largeObject.Header);
+            return tools.CalculateObjectId(largeObject.Header);
         }
 
+        currentObject.AddAttributes(parameters.Header!.Attributes);
         return await PutSingleObjectAsync(currentObject, ctx);
     }
 
@@ -257,10 +245,7 @@ internal class ObjectServiceProvider : ContextAccessor
         hdr.OwnerId = Context.Owner.ToGrpcMessage();
         hdr.Version = Context.Version.ToGrpcMessage();
 
-        var oid = new ObjectID
-        {
-            Value = hdr.Sha256()
-        };
+        var oid = new ObjectID { Value = hdr.Sha256() };
 
         var request = new PutRequest
         {
@@ -269,7 +254,7 @@ internal class ObjectServiceProvider : ContextAccessor
                 Init = new PutRequest.Types.Body.Types.Init
                 {
                     Header = hdr
-                },
+                }
             }
         };
 
@@ -314,13 +299,12 @@ internal class ObjectServiceProvider : ContextAccessor
     {
         var reader = GetObjectInit(request, ctx);
       
-        var obj = await reader.ReadHeader();
+        var grpcObject = await reader.ReadHeader();
+        var modelObject = grpcObject.ToModel();
+      
+        modelObject.ObjectReader = reader;
 
-        var @object = obj.ToModel();
-
-        @object.ObjectReader = reader;
-
-        return @object;       
+        return modelObject;       
     }
 
     private ObjectReader GetObjectInit(GetRequest initRequest, Context ctx)
@@ -328,7 +312,7 @@ internal class ObjectServiceProvider : ContextAccessor
         if (initRequest is null)
             throw new ArgumentNullException(nameof(initRequest));
 
-        var call = objectServiceClient!.Get(initRequest, null, ctx.Deadline, ctx.CancellationToken);
+        var call = client.Get(initRequest, null, ctx.Deadline, ctx.CancellationToken);
  
         return new ObjectReader(call);
     }
@@ -340,7 +324,7 @@ internal class ObjectServiceProvider : ContextAccessor
             throw new ArgumentNullException(nameof(initRequest));
         }
 
-        var call = objectServiceClient!.Put(null, ctx.Deadline, ctx.CancellationToken);
+        var call = client.Put(null, ctx.Deadline, ctx.CancellationToken);
 
         await call.RequestStream.WriteAsync(initRequest);
 
@@ -372,98 +356,16 @@ internal class ObjectServiceProvider : ContextAccessor
             throw new ArgumentNullException(nameof(initRequest));
         }
 
-        var call = objectServiceClient!.Search(initRequest, null, ctx.Deadline, ctx.CancellationToken);
+        var call = client.Search(initRequest, null, ctx.Deadline, ctx.CancellationToken);
     
         return new SearchReader(call);
-    }
-    
-    private Object.Object CreateObject(ModelsV2.Object @object)
-    {
-        var grpcHeader = @object.Header.ToGrpcMessage();
-       
-        grpcHeader.OwnerId = Context.Owner.ToGrpcMessage();
-        grpcHeader.Version = Context.Version.ToGrpcMessage();
-
-        if (@object.Payload != null)
-        {
-            grpcHeader.PayloadLength = (ulong)@object.Payload.Length;
-            grpcHeader.PayloadHash = Sha256Checksum(@object.Payload);
-        }
-
-        var split = @object.Header.Split;
-        if (split != null)
-        {
-            grpcHeader.Split = new Header.Types.Split
-            {
-                SplitId = split.SplitId != null ? ByteString.CopyFrom(split.SplitId.ToBinary()) : null                    
-            };
-
-            if (split.Children != null && split.Children.Count != 0)
-                grpcHeader.Split.Children.AddRange(split.Children.Select(id => id.ToGrpcMessage()));
-
-            if (split.ParentHeader is not null)
-            {
-                var grpcParentHeader = CreateHeader(split.ParentHeader, []);
-
-                grpcHeader.Split.Parent = new ObjectID { Value = grpcParentHeader.Sha256() };
-                grpcHeader.Split.ParentHeader = grpcParentHeader;
-                grpcHeader.Split.ParentSignature = new Refs.Signature
-                {
-                    Key = ByteString.CopyFrom(Context.Key.PublicKey()),
-                    Sign = ByteString.CopyFrom(Context.Key.SignData(grpcHeader.Split.Parent.ToByteArray())),
-                };
-
-                split.Parent = grpcHeader.Split.Parent.ToModel();
-            }
-
-            grpcHeader.Split.Previous = split.Previous?.ToGrpcMessage(); 
-        }
-
-        var obj = new Object.Object
-        {
-            Header = grpcHeader,
-            ObjectId = new ObjectID { Value = grpcHeader.Sha256() },
-            Payload = ByteString.CopyFrom(@object.Payload)
-        };
-
-        obj.Signature = new Refs.Signature
-        {
-            Key = ByteString.CopyFrom(Context.Key.PublicKey()),
-            Sign = ByteString.CopyFrom(Context.Key.SignData(obj.ObjectId.ToByteArray())),
-        };        
-      
-        return obj;
-    }
-
-    private Header CreateHeader(ObjectHeader header, byte[]? payload)
-    {
-        var grpcHeader = header.ToGrpcMessage();
-       
-        grpcHeader.OwnerId = Context.Owner.ToGrpcMessage();
-        grpcHeader.Version = Context.Version.ToGrpcMessage();
-
-        if (header.PayloadCheckSum != null)
-            grpcHeader.PayloadHash = Sha256Checksum(header.PayloadCheckSum);
-        else if (payload != null)    
-            grpcHeader.PayloadHash = Sha256Checksum(payload);
-       
-        return grpcHeader;
-    }
-
-    private static Checksum Sha256Checksum(byte[] data)
-    {
-        return new Checksum
-        {
-            Type = ChecksumType.Sha256,
-            Sum =  ByteString.CopyFrom(data.Sha256())
-        };
-    }
+    }   
 
     private async Task<Session.SessionToken> GetOrCreateSession(Context ctx)
     {
         if (string.IsNullOrEmpty(ctx.SessionToken))
         { 
-            return await Context.SessionService!.CreateSessionAsync(uint.MaxValue, ctx);
+            return await Context.Client.CreateSessionInternalAsync(uint.MaxValue, ctx);
         }
         
         return Convert.FromBase64String(ctx.SessionToken).DeserializeSessionToken();

src/FrostFS.SDK.ClientV2/Services/ObjectTools.cs

@@ -0,0 +1,104 @@
+using System.Linq;
+
+using Google.Protobuf;
+
+using FrostFS.Object;
+using FrostFS.Refs;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ModelsV2;
+
+namespace FrostFS.SDK.ClientV2;
+
+internal class ObjectTools(ClientEnvironment ctx) : ContextAccessor (ctx)
+{
+    internal ObjectId CalculateObjectId(ObjectHeader header)
+    { 
+        var grpcHeader = CreateHeader(header, []);
+
+        return new ObjectID { Value = grpcHeader.Sha256() }.ToModel();        
+    }
+
+    internal Object.Object CreateObject(ModelsV2.Object @object)
+    {
+        var grpcHeader = @object.Header.ToGrpcMessage();
+       
+        grpcHeader.OwnerId = Context.Owner.ToGrpcMessage();
+        grpcHeader.Version = Context.Version.ToGrpcMessage();
+
+        if (@object.Payload != null)
+        {
+            grpcHeader.PayloadLength = (ulong)@object.Payload.Length;
+            grpcHeader.PayloadHash = Sha256Checksum(@object.Payload);
+        }
+
+        var split = @object.Header.Split;
+        if (split != null)
+        {
+            grpcHeader.Split = new Header.Types.Split
+            {
+                SplitId = split.SplitId != null ? ByteString.CopyFrom(split.SplitId.ToBinary()) : null                    
+            };
+
+            if (split.Children != null && split.Children.Count != 0)
+                grpcHeader.Split.Children.AddRange(split.Children.Select(id => id.ToGrpcMessage()));
+
+            if (split.ParentHeader is not null)
+            {
+                var grpcParentHeader = CreateHeader(split.ParentHeader, []);
+
+                grpcHeader.Split.Parent = new ObjectID { Value = grpcParentHeader.Sha256() };
+                grpcHeader.Split.ParentHeader = grpcParentHeader;
+                grpcHeader.Split.ParentSignature = new Refs.Signature
+                {
+                    Key = ByteString.CopyFrom(Context.Key.PublicKey()),
+                    Sign = ByteString.CopyFrom(Context.Key.SignData(grpcHeader.Split.Parent.ToByteArray())),
+                };
+
+                split.Parent = grpcHeader.Split.Parent.ToModel();
+            }
+
+            grpcHeader.Split.Previous = split.Previous?.ToGrpcMessage(); 
+        }
+
+        var obj = new Object.Object
+        {
+            Header = grpcHeader,
+            ObjectId = new ObjectID { Value = grpcHeader.Sha256() },
+            Payload = ByteString.CopyFrom(@object.Payload)
+        };
+
+        obj.Signature = new Refs.Signature
+        {
+            Key = ByteString.CopyFrom(Context.Key.PublicKey()),
+            Sign = ByteString.CopyFrom(Context.Key.SignData(obj.ObjectId.ToByteArray())),
+        };        
+      
+        return obj;
+    }
+
+    internal Header CreateHeader(ObjectHeader header, byte[]? payload)
+    {
+        var grpcHeader = header.ToGrpcMessage();
+       
+        grpcHeader.OwnerId = Context.Owner.ToGrpcMessage();
+        grpcHeader.Version = Context.Version.ToGrpcMessage();
+
+        if (header.PayloadCheckSum != null)
+            grpcHeader.PayloadHash = Sha256Checksum(header.PayloadCheckSum);
+        else if (payload != null)    
+            grpcHeader.PayloadHash = Sha256Checksum(payload);
+       
+        return grpcHeader;
+    }
+
+    internal static Checksum Sha256Checksum(byte[] data)
+    {
+        return new Checksum
+        {
+            Type = ChecksumType.Sha256,
+            Sum =  ByteString.CopyFrom(data.Sha256())
+        };
+    }
+
+}

src/FrostFS.SDK.ClientV2/Tools/ClientEnvironment.cs

@@ -1,3 +1,4 @@
+using FrostFS.SDK.ClientV2.Interfaces;
 using FrostFS.SDK.ModelsV2;
 using Grpc.Net.Client;
 using System;
@@ -5,7 +6,7 @@ using System.Security.Cryptography;
 
 namespace FrostFS.SDK.ClientV2;
 
-public class ClientEnvironment(ECDsa key, OwnerId owner, GrpcChannel channel, ModelsV2.Version version) : IDisposable
+public class ClientEnvironment(Client client, ECDsa key, OwnerId owner, GrpcChannel channel, ModelsV2.Version version) : IDisposable
 {
     internal OwnerId Owner { get; } = owner;
     internal GrpcChannel Channel { get; private set; } = channel;
@@ -13,16 +14,7 @@ public class ClientEnvironment(ECDsa key, OwnerId owner, GrpcChannel channel, Mo
     internal ModelsV2.Version Version { get; } = version;
     internal NetworkSettings? NetworkSettings { get; set; }
 
-    internal ContainerServiceProvider? ContainerService { get; set; }
-    internal NetmapServiceProvider? NetmapService { get; set; }
-    internal SessionServiceProvider? SessionService { get; set; }
-    internal ObjectServiceProvider? ObjectService { get; set; }
-
-    internal bool Initialized => 
-        ContainerService != null
-        && NetmapService != null
-        && SessionService != null
-        && ObjectService != null;
+    internal Client Client { get; set; } = client;
 
     public void Dispose()
     {

src/FrostFS.SDK.ModelsV2/CallStatistics.cs

@@ -0,0 +1,7 @@
+namespace FrostFS.SDK.ModelsV2;
+
+public class CallStatistics
+{ 
+    public string MethodName { get; set; }
+    public long ElapsedMicroSeconds { get; set; }
+}

src/FrostFS.SDK.ModelsV2/Context.cs

@@ -1,13 +1,26 @@
 using System;
+using System.Collections.Generic;
 using System.Threading;
+using FrostFS.SDK.ModelsV2;
+using Grpc.Core.Interceptors;
 
 namespace FrostFS.SDK.ClientV2;
 
 public class Context()
 {
+    private List<Interceptor> interceptors;
+
     public CancellationToken CancellationToken { get; set; } = default;
     public TimeSpan Timeout { get; set; } = default;
     public string SessionToken { get; set; } = string.Empty;
 
     public DateTime? Deadline => Timeout.Ticks > 0 ? DateTime.UtcNow.Add(Timeout) : null;
+
+    public Action<CallStatistics> Callback { get; set; }
+
+    public List<Interceptor> Interceptors
+    {
+        get { return interceptors ??= []; }
+        set { interceptors = value; }
+    }  
 }

src/FrostFS.SDK.ModelsV2/FrostFS.SDK.ModelsV2.csproj

@@ -9,6 +9,10 @@
 	<PropertyGroup>
 		<EnableNETAnalyzers>true</EnableNETAnalyzers>
 	</PropertyGroup>
+  
+  <ItemGroup>
+    <PackageReference Include="Grpc.Net.Client" Version="2.63.0" />
+  </ItemGroup>
 	
   <ItemGroup>
     <ProjectReference Include="..\FrostFS.SDK.Cryptography\FrostFS.SDK.Cryptography.csproj" />

src/FrostFS.SDK.ProtosV2/FrostFS.SDK.ProtosV2.csproj

@@ -12,7 +12,7 @@
 
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.26.1" />
-    <PackageReference Include="Grpc.Net.Client" Version="2.62.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.63.0" />
     <PackageReference Include="Grpc.Tools" Version="2.64.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

src/FrostFS.SDK.Tests/ClientTestLive.cs

@@ -7,6 +7,8 @@ using FrostFS.SDK.ModelsV2.Netmap;
 using Grpc.Core;
 using Grpc.Net.Client;
 using Microsoft.Extensions.Options;
+using Grpc.Core.Interceptors;
+using System.Diagnostics;
 
 namespace FrostFS.SDK.Tests;
 
@@ -18,13 +20,7 @@ public class ClientTestLive
     [Fact]
     public async void NetworkMapTest()
     {
-        var channelOptions = new GrpcChannelOptions
-        {
-            Credentials = ChannelCredentials.Insecure,
-            HttpHandler = new HttpClientHandler()
-        };
-
-        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url));
 
         var result = await fsClient.GetNetmapSnapshotAsync();
 
@@ -36,20 +32,14 @@ public class ClientTestLive
         Assert.Equal(13, item.Version.Minor);
         Assert.Equal(NodeState.Online, item.State);
         Assert.True(item.PublicKey.Length > 0);
-        Assert.Single(item.Addresses);        
+        Assert.Single(item.Addresses);
         Assert.Equal(9, item.Attributes.Count);
     }
 
     [Fact]
     public async void NodeInfoTest()
     {
-        var channelOptions = new GrpcChannelOptions
-        {
-            Credentials = ChannelCredentials.Insecure,
-            HttpHandler = new HttpClientHandler()
-        };
-
-        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url));
 
         var result = await fsClient.GetNodeInfoAsync();
 
@@ -64,27 +54,30 @@ public class ClientTestLive
     [Fact]
     public async void SimpleScenarioTest()
     {
-        var channelOptions =  new GrpcChannelOptions
-        {
-            Credentials = ChannelCredentials.Insecure,
-            HttpHandler = new HttpClientHandler()
-        };
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url));
 
-        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
-              
         await Cleanup(fsClient);
 
         var containerId = await fsClient.CreateContainerAsync(
-            new ModelsV2.Container(BasicAcl.PublicRW, new PlacementPolicy(true, new Replica(1))));
+            new ModelsV2.Container(BasicAcl.PublicRW, new PlacementPolicy(true, new Replica(1))),
+            new Context
+            {
+                Callback = new((CallStatistics cs) => Assert.True(cs.ElapsedMicroSeconds > 0))
+            }
+        );
 
-        var context = new Context { Timeout = TimeSpan.FromSeconds(10) };
+        var context = new Context
+        {
+            Timeout = TimeSpan.FromSeconds(10),
+            Callback = new((CallStatistics cs) => Assert.True(cs.ElapsedMicroSeconds > 0))
+        };
 
         var container = await GetContainer(fsClient, containerId, context);
 
         Assert.NotNull(container);
 
         Random rnd = new();
-        var bytes = new byte[6*1024*1024 + 100];
+        var bytes = new byte[6 * 1024 * 1024 + 100];
         rnd.NextBytes(bytes);
 
         var param = new PutObjectParameters
@@ -97,7 +90,10 @@ public class ClientTestLive
             ClientCut = false
         };
 
-        var objectId = await fsClient.PutObjectAsync(param);
+        var objectId = await fsClient.PutObjectAsync(param, new Context
+        {
+            Callback = new((CallStatistics cs) => Assert.True(cs.ElapsedMicroSeconds > 0))
+        });
 
         var filter = new ObjectFilter(ObjectMatchType.Equals, "fileName", "test");
 
@@ -121,7 +117,7 @@ public class ClientTestLive
         MemoryStream ms = new(downloadedBytes);
 
         byte[]? chunk = null;
-        while ((chunk = await @object.ObjectReader.ReadChunk()) != null)
+        while ((chunk = await @object.ObjectReader!.ReadChunk()) != null)
         {
             ms.Write(chunk);
         }
@@ -141,26 +137,28 @@ public class ClientTestLive
     [Fact]
     public async void ClientCutScenarioTest()
     {
-        var channelOptions = new GrpcChannelOptions
-        {
-            Credentials = ChannelCredentials.Insecure,
-            HttpHandler = new HttpClientHandler()
-        };
-
-        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url));
 
         await Cleanup(fsClient);
 
         var containerId = await fsClient.CreateContainerAsync(
             new ModelsV2.Container(BasicAcl.PublicRW, new PlacementPolicy(true, new Replica(1))));
 
-        var context = new Context { Timeout = TimeSpan.FromSeconds(10) };
+        var context = new Context 
+        { 
+            Timeout = TimeSpan.FromSeconds(10)
+        };
+
+        var metrics = new MetricsInterceptor();
+
+        context.Interceptors.Add(metrics);
+
         var container = await GetContainer(fsClient, containerId, context);
 
         Assert.NotNull(container);
 
         Random rnd = new();
-        var bytes = new byte[6*1024*1024 + 100];
+        var bytes = new byte[6 * 1024 * 1024 + 100];
         rnd.NextBytes(bytes);
 
         var param = new PutObjectParameters
@@ -193,11 +191,11 @@ public class ClientTestLive
 
         var @object = await fsClient.GetObjectAsync(containerId, objectId!);
 
-         var downloadedBytes = new byte[@object.Header.PayloadLength];
+        var downloadedBytes = new byte[@object.Header.PayloadLength];
         MemoryStream ms = new(downloadedBytes);
 
         byte[]? chunk = null;
-        while ((chunk = await @object.ObjectReader.ReadChunk()) != null)
+        while ((chunk = await @object.ObjectReader!.ReadChunk()) != null)
         {
             ms.Write(chunk);
         }
@@ -237,7 +235,7 @@ public class ClientTestLive
         {
             try
             {
-                await Task.Delay(100);   
+                await Task.Delay(100);
                 return await fsClient.GetContainerAsync(id, ctx);
             }
             catch (ApplicationException)
@@ -252,3 +250,35 @@ public class ClientTestLive
         }
     }
 }
+
+public class MetricsInterceptor() : Interceptor
+{
+    public override AsyncUnaryCall<TResponse> AsyncUnaryCall<TRequest, TResponse>(
+        TRequest request,
+        ClientInterceptorContext<TRequest, TResponse> context,
+        AsyncUnaryCallContinuation<TRequest, TResponse> continuation)
+    {
+        var call = continuation(request, context);
+
+        return new AsyncUnaryCall<TResponse>(
+            HandleUnaryResponse(call),
+            call.ResponseHeadersAsync,
+            call.GetStatus,
+            call.GetTrailers,
+            call.Dispose);
+    }
+  
+    private async Task<TResponse> HandleUnaryResponse<TResponse>(AsyncUnaryCall<TResponse> call)
+    {
+        var watch = new Stopwatch();
+        watch.Start();
+      
+        var response = await call.ResponseAsync;
+
+        watch.Stop();
+
+        var elapsed = watch.ElapsedTicks * 1_000_000/Stopwatch.Frequency;
+
+        return response;    
+    }
+}

src/FrostFS.SDK.Tests/ContainerServiceMocks/ContainerServiceBase.cs

@@ -1,28 +0,0 @@
-using System.Security.Cryptography;
-using FrostFS.Container;
-using Moq;
-
-using FrostFS.SDK.Cryptography;
-using FrostFS.SDK.ModelsV2.Enums;
-using FrostFS.SDK.ModelsV2.Netmap;
-
-namespace FrostFS.SDK.Tests;
-
-public abstract class ServiceBase(string key)
-{
-    public ECDsa Key { get; private set; } = key.LoadWif();
-    public ModelsV2.Version Version { get; set; } = DefaultVersion;
-    public BasicAcl Acl { get; set; } = DefaultAcl;
-    public PlacementPolicy PlacementPolicy { get; set; } = DefaultPlacementPolicy;
-
-    public static ModelsV2.Version DefaultVersion { get; } = new(2, 13);
-    public static BasicAcl DefaultAcl { get; } = BasicAcl.PublicRW;
-    public static PlacementPolicy DefaultPlacementPolicy { get; } = new PlacementPolicy(true, new Replica(1));
-}
-
-public abstract class ContainerServiceBase(string key) : ServiceBase (key)
-{
-    public Guid ContainerGuid { get; set; } = Guid.NewGuid();
-   
-    public abstract Mock<ContainerService.ContainerServiceClient> GetMock();
-}

src/FrostFS.SDK.Tests/ContainerServiceMocks/DeleteContainerMock.cs

@@ -1,69 +0,0 @@
-using FrostFS.Container;
-using FrostFS.Session;
-using Google.Protobuf;
-using Grpc.Core;
-using Moq;
-
-namespace FrostFS.SDK.Tests;
-
-public class DeleteContainerMock(string key) : ContainerServiceBase(key)
-{
-    public override Mock<ContainerService.ContainerServiceClient> GetMock()
-    {
-        var mock = new Mock<ContainerService.ContainerServiceClient>();
-
-        var v = mock.Setup(x => x.DeleteAsync(
-            It.IsAny<DeleteRequest>(),
-            It.IsAny<Metadata>(),
-            It.IsAny<DateTime?>(),
-            It.IsAny<CancellationToken>()));
-
-
-        v.Returns((Object.DeleteRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
-            {
-                var deleteResponse = new Object.DeleteResponse
-                {
-                    Body = new Object.DeleteResponse.Types.Body
-                    {
-                        Tombstone = new Refs.Address
-                        {
-                            ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
-                            ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
-                        }
-                    },
-                    MetaHeader = new ResponseMetaHeader()
-                };
-
-                var metadata = new Metadata();
-
-                return new AsyncUnaryCall<Object.DeleteResponse>(
-                    Task.FromResult(deleteResponse),
-                    Task.FromResult(metadata),
-                    () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
-                    () => metadata,
-                    () => { });
-            });
-
-        return mock;
-    }
-}
-
-
-        //    objectServiceClientMock.Setup(x => x.Head(It.IsAny<Object.HeadRequest>(), It.IsAny<Metadata>(), It.IsAny<DateTime>(), It.IsAny<CancellationToken>()))
-        //         .Returns((Object.DeleteRequest r, Metadata m, DateTime dt, CancellationToken ct) =>
-        //             {
-        //                 return new 
-        //                 {
-        //                     Body = new Object.DeleteResponse.Types.Body
-        //                     {
-        //                         Tombstone = new Refs.Address
-        //                         {
-        //                             ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
-        //                             ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
-        //                         }
-        //                     }
-        //                 };
-        //             });
-
-
-       

src/FrostFS.SDK.Tests/ContainerServiceMocks/GetContainerMock.cs

@@ -1,163 +0,0 @@
-using FrostFS.Container;
-using FrostFS.Session;
-using Google.Protobuf;
-using Grpc.Core;
-using Moq;
-
-using FrostFS.SDK.Cryptography;
-using FrostFS.SDK.ClientV2;
-using FrostFS.SDK.ModelsV2.Netmap;
-using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
-using FrostFS.SDK.ClientV2.Mappers.GRPC;
-
-namespace FrostFS.SDK.Tests;
-
-public class GetContainerMock(string key) : ContainerServiceBase(key)
-{
-    public override Mock<ContainerService.ContainerServiceClient> GetMock()
-    {
-        var mock = new Mock<ContainerService.ContainerServiceClient>();
-
-        var grpcVersion = Version.ToGrpcMessage();
-
-        var getResponse = new GetResponse
-        {
-            Body = new GetResponse.Types.Body
-            {
-                Container = new Container.Container
-                {
-                    Version = grpcVersion,
-                    Nonce = ByteString.CopyFrom(ContainerGuid.ToBytes()),
-                    BasicAcl = (uint)Acl,
-                    PlacementPolicy = PlacementPolicy.ToGrpcMessage()
-                }
-            },
-            MetaHeader = new ResponseMetaHeader
-            {
-                Version = grpcVersion,
-                Epoch = 100,
-                Ttl = 1
-            }
-        };
-
-        getResponse.VerifyHeader = GetResponseVerificationHeader(getResponse);
-
-        var metadata = new Metadata();
-        var getContainerResponse = new AsyncUnaryCall<GetResponse>(
-                    Task.FromResult(getResponse),
-                    Task.FromResult(metadata),
-                    () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
-                    () => metadata,
-                    () => { });
-
-        mock.Setup(x => x.GetAsync(
-            It.IsAny<GetRequest>(),
-            It.IsAny<Metadata>(),
-            It.IsAny<DateTime?>(),
-            It.IsAny<CancellationToken>()))
-                .Returns((GetRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
-                {
-                    Verifier.CheckRequest(r);
-
-                    return getContainerResponse;
-                });
-
-        return mock;
-    }
-
-    private ResponseVerificationHeader GetResponseVerificationHeader(GetResponse response)
-    {
-        var verifyHeader = new ResponseVerificationHeader
-        {
-            MetaSignature = new Refs.Signature
-            {
-                Key = ByteString.CopyFrom(Key.PublicKey()),
-                Scheme = FrostFS.Refs.SignatureScheme.EcdsaRfc6979Sha256,
-                Sign = ByteString.CopyFrom(Key.SignData(response.MetaHeader.ToByteArray()))
-            },
-            BodySignature = new Refs.Signature
-            {
-                Key = ByteString.CopyFrom(Key.PublicKey()),
-                Scheme = FrostFS.Refs.SignatureScheme.EcdsaRfc6979Sha256,
-                Sign = ByteString.CopyFrom(Key.SignData(response.GetBody().ToByteArray()))
-            },
-            OriginSignature = new Refs.Signature
-            {
-                Key = ByteString.CopyFrom(Key.PublicKey()),
-                Scheme = FrostFS.Refs.SignatureScheme.EcdsaRfc6979Sha256,
-                Sign = ByteString.CopyFrom(Key.SignData([]))
-            }
-        };
-
-        return verifyHeader;
-    }
-}
-
-//         objectServiceClientMock.Setup(
-//             x => x.Put(It.IsAny<Metadata>(), It.IsAny<DateTime>(), It.IsAny<CancellationToken>()))
-//                 .Returns((Metadata m, DateTime dt, CancellationToken ct) =>
-//                 {
-//                     return new AsyncClientStreamingCall<FrostFS.Object.PutRequest, FrostFS.Object.PutResponse>(null, null, null, null, null, null);
-
-//                     //IClientStreamWriter<TRequest> requestStream, Task<TResponse> responseAsync, Task<Metadata> responseHeadersAsync, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction
-//                 });
-
-//         return objectServiceClientMock;
-//     }
-
-    
-// }
-
-
-  // public virtual global::FrostFS.Object.HeadResponse Head(global::FrostFS.Object.HeadRequest request, grpc::Metadata headers = null, global::System.DateTime? deadline = null, global::System.Threading.CancellationToken cancellationToken = default(global::System.Threading.CancellationToken))
-        //       {
-        //         return Head(request, new grpc::CallOptions(headers, deadline, cancellationToken));
-        //       }
-
-        //    objectServiceClientMock.Setup(x => x.Head(It.IsAny<Object.HeadRequest>(), It.IsAny<Metadata>(), It.IsAny<DateTime>(), It.IsAny<CancellationToken>()))
-        //         .Returns((Object.DeleteRequest r, Metadata m, DateTime dt, CancellationToken ct) =>
-        //             {
-        //                 return new 
-        //                 {
-        //                     Body = new Object.DeleteResponse.Types.Body
-        //                     {
-        //                         Tombstone = new Refs.Address
-        //                         {
-        //                             ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
-        //                             ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
-        //                         }
-        //                     }
-        //                 };
-        //             });
-
-
-        // objectServiceClientMock.Setup(x => x.Delete(It.IsAny<Object.DeleteRequest>(), It.IsAny<Metadata>(), It.IsAny<DateTime?>(), It.IsAny<CancellationToken>()))
-        //     .Returns((Object.DeleteRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
-        //         {
-        //             return new Object.DeleteResponse
-        //             {
-        //                 Body = new Object.DeleteResponse.Types.Body
-        //                 {
-        //                     Tombstone = new Refs.Address
-        //                     {
-        //                         ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
-        //                         ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
-        //                     }
-        //                 },
-        //                 MetaHeader = new ResponseMetaHeader()
-        //                 {                             
-        //                 },
-        //                 VerifyHeader = new ResponseVerificationHeader()
-        //                 {
-        //                     MetaSignature = new Refs.Signature
-        //                     {
-        //                         Key = ByteString.CopyFrom(_key.PublicKey()),
-        //                         Scheme = Refs.SignatureScheme.EcdsaRfc6979Sha256,
-        //                         Sign = ByteString.CopyFrom(_key.SignData(Array.Empty<byte>()))
-
-        //                         // ByteString.CopyFrom(_key.SignData(grpcHeader.Split.Parent.ToByteArray())),
-        //                     }
-        //                  }
-
-        //             };
-        //         });

src/FrostFS.SDK.Tests/ContainerTest.cs

@@ -3,18 +3,20 @@ using FrostFS.SDK.Cryptography;
 using FrostFS.SDK.ModelsV2;
 using FrostFS.SDK.ModelsV2.Enums;
 using FrostFS.SDK.ModelsV2.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+
 using Microsoft.Extensions.Options;
 
 namespace FrostFS.SDK.Tests;
 
-public class ClientTest
+public class ContainerTest
 {
     private readonly string key = "KwHDAJ66o8FoLBjVbjP2sWBmgBMGjt7Vv4boA7xQrBoAYBE397Aq";
 
     [Fact]
     public async void CreateContainerTest()
     {
-        var factory = new PutContainerMock(this.key)
+        var factory = new PutContainerMockFactory(this.key)
         {
             PlacementPolicy = new PlacementPolicy(true, new Replica(1)),
             Version = new ModelsV2.Version(2, 13),
@@ -30,10 +32,10 @@ public class ClientTest
         var fsClient = Client.GetTestInstance(
             settings,
             null,
-            new NetmapMock(this.key).GetMock().Object,
-            new SessionMock(this.key).GetMock().Object,
+            new NetmapMockFactory(this.key).GetMock().Object,
+            new SessionMockFactory(this.key).GetMock().Object,
             factory.GetMock().Object,
-            new ObjectMock(this.key).GetMock().Object);
+            new ObjectMockFactory(this.key).GetMock().Object);
 
         var result = await fsClient.CreateContainerAsync(new ModelsV2.Container(BasicAcl.PublicRW, factory.PlacementPolicy));
 
@@ -45,7 +47,7 @@ public class ClientTest
     [Fact]
     public async void GetContainerTest()
     {
-        var factory = new GetContainerMock(this.key)
+        var factory = new GetContainerMockFactory(this.key)
         {
             PlacementPolicy = new PlacementPolicy(true, new Replica(1)),
             Version = new ModelsV2.Version(2, 13),
@@ -62,10 +64,10 @@ public class ClientTest
         var fsClient = Client.GetTestInstance(
             settings,
             null,
-            new NetmapMock(this.key).GetMock().Object,
-            new SessionMock(this.key).GetMock().Object,
+            new NetmapMockFactory(this.key).GetMock().Object,
+            new SessionMockFactory(this.key).GetMock().Object,
             factory.GetMock().Object,
-            new ObjectMock(this.key).GetMock().Object);
+            new ObjectMockFactory(this.key).GetMock().Object);
 
         var cid = new ContainerId(Base58.Encode(factory.ContainerGuid.ToBytes()));
 
@@ -80,8 +82,38 @@ public class ClientTest
         Assert.Equal(factory.Version.ToString(), result.Version!.ToString());
     }
 
-    // [Fact]
-    // public async void DeleteObjectAsyncTest()
-    // {   
-    // }
+    [Fact]
+    public async void DeleteContainerAsyncTest()
+    {
+        var factory = new DeleteContainerMockFactory(this.key)
+        {
+            Version = new ModelsV2.Version(2, 13),
+            Acl = BasicAcl.PublicRW,
+            ContainerGuid = Guid.NewGuid(),
+        };
+
+        var settings = Options.Create(new ClientSettings
+        {
+            Key = key,
+            Host = "http://localhost:8080"
+        });
+
+        var fsClient = Client.GetTestInstance(
+            settings,
+            null,
+            new NetmapMockFactory(this.key).GetMock().Object,
+            new SessionMockFactory(this.key).GetMock().Object,
+            factory.GetMock().Object,
+            new ObjectMockFactory(this.key).GetMock().Object);
+
+        var cid = new ContainerId(Base58.Encode(factory.ContainerGuid.ToBytes()));
+
+        await fsClient.DeleteContainerAsync(cid);
+
+        Assert.Single(factory.Requests);
+
+        var request = factory.Requests.First();
+        
+        Assert.Equal(cid.ToGrpcMessage(), request.Request.Body.ContainerId);        
+    }
 }

src/FrostFS.SDK.Tests/Mocks/ContainerServiceMocks/ContainerServiceBase.cs

@@ -0,0 +1,78 @@
+using System.Security.Cryptography;
+using FrostFS.Container;
+using Moq;
+
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ModelsV2.Enums;
+using FrostFS.SDK.ModelsV2.Netmap;
+using FrostFS.Session;
+using Google.Protobuf;
+
+using FrostFS.SDK.ClientV2;
+using FrostFS.Object;
+using Grpc.Core;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+namespace FrostFS.SDK.Tests;
+
+public abstract class ServiceBase(string key)
+{
+    public ECDsa Key { get; private set; } = key.LoadWif();
+    public ModelsV2.Version Version { get; set; } = DefaultVersion;
+    public BasicAcl Acl { get; set; } = DefaultAcl;
+    public PlacementPolicy PlacementPolicy { get; set; } = DefaultPlacementPolicy;
+
+    public static ModelsV2.Version DefaultVersion { get; } = new(2, 13);
+    public static BasicAcl DefaultAcl { get; } = BasicAcl.PublicRW;
+    public static PlacementPolicy DefaultPlacementPolicy { get; } = new PlacementPolicy(true, new Replica(1));
+
+    public Metadata ResponseMetaData => [];
+
+    protected ResponseVerificationHeader GetResponseVerificationHeader(IResponse response)
+    {
+        var verifyHeader = new ResponseVerificationHeader
+        {
+            MetaSignature = new Refs.Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = Refs.SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData(response.MetaHeader.ToByteArray()))
+            },
+            BodySignature = new Refs.Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = Refs.SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData(response.GetBody().ToByteArray()))
+            },
+            OriginSignature = new Refs.Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = Refs.SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData([]))
+            }
+        };
+
+        return verifyHeader;
+    }
+
+    public ResponseMetaHeader ResponseMetaHeader => new()
+        {
+            Version = Version.ToGrpcMessage(),
+            Epoch = 100,
+            Ttl = 1
+        };
+}
+
+public abstract class ContainerServiceBase(string key) : ServiceBase (key)
+{
+    public Guid ContainerGuid { get; set; } = Guid.NewGuid();
+   
+    public abstract Mock<ContainerService.ContainerServiceClient> GetMock();
+}
+
+public abstract class ObjectServiceBase(string key) : ServiceBase (key)
+{
+    public abstract Mock<ObjectService.ObjectServiceClient> GetMock(); 
+    
+    public Guid ContainerGuid { get; set; } = Guid.NewGuid();
+}

src/FrostFS.SDK.Tests/Mocks/ContainerServiceMocks/DeleteContainerMock.cs

@@ -0,0 +1,54 @@
+using FrostFS.Container;
+using FrostFS.Session;
+using Grpc.Core;
+using Moq;
+
+namespace FrostFS.SDK.Tests;
+
+public class DeleteContainerMockFactory(string key) : ContainerServiceBase(key)
+{
+    public override Mock<ContainerService.ContainerServiceClient> GetMock()
+    {
+        var mock = new Mock<ContainerService.ContainerServiceClient>();
+
+        var v = mock.Setup(x => x.DeleteAsync(
+            It.IsAny<DeleteRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()))
+            .Returns((DeleteRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+            {
+                Requests.Add(new RequestData<DeleteRequest>(r, m, dt, ct));
+
+                var response = new DeleteResponse
+                {
+                    Body = new DeleteResponse.Types.Body(),
+                    MetaHeader = new ResponseMetaHeader()
+                };
+
+                var metadata = new Metadata();
+
+                response.VerifyHeader = GetResponseVerificationHeader(response);
+
+                return new AsyncUnaryCall<DeleteResponse>(
+                    Task.FromResult(response),
+                    Task.FromResult(metadata),
+                    () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                    () => metadata,
+                    () => { });
+            });
+
+        return mock;
+    }
+
+    public List<RequestData<DeleteRequest>> Requests = [];
+}
+
+public class RequestData<T>(T request, Metadata m, DateTime? dt, CancellationToken ct)
+{
+    public T Request => request;
+    public Metadata Metadata => m;
+    public DateTime? deadline => dt;
+    public CancellationToken CancellationToken => ct;
+}
+       

src/FrostFS.SDK.Tests/Mocks/ContainerServiceMocks/GetContainerMock copy.cs

@@ -0,0 +1,13 @@
+using FrostFS.Container;
+using Moq;
+
+
+namespace FrostFS.SDK.Tests;
+
+public class ContainerStub(string key) : ContainerServiceBase(key)
+{
+    public override Mock<ContainerService.ContainerServiceClient> GetMock()
+    {
+        return new Mock<ContainerService.ContainerServiceClient>();
+    }
+}

src/FrostFS.SDK.Tests/Mocks/ContainerServiceMocks/GetContainerMock.cs

@@ -0,0 +1,58 @@
+using FrostFS.Container;
+using Google.Protobuf;
+using Grpc.Core;
+using Moq;
+
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ModelsV2.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+namespace FrostFS.SDK.Tests;
+
+public class GetContainerMockFactory(string key) : ContainerServiceBase(key)
+{
+    public override Mock<ContainerService.ContainerServiceClient> GetMock()
+    {
+        var mock = new Mock<ContainerService.ContainerServiceClient>();
+
+        var grpcVersion = Version.ToGrpcMessage();
+
+        var response = new GetResponse
+        {
+            Body = new GetResponse.Types.Body
+            {
+                Container = new Container.Container
+                {
+                    Version = grpcVersion,
+                    Nonce = ByteString.CopyFrom(ContainerGuid.ToBytes()),
+                    BasicAcl = (uint)Acl,
+                    PlacementPolicy = PlacementPolicy.ToGrpcMessage()
+                }
+            },
+            MetaHeader = ResponseMetaHeader
+        };
+
+        response.VerifyHeader = GetResponseVerificationHeader(response);
+
+        mock.Setup(x => x.GetAsync(
+            It.IsAny<GetRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()))
+                .Returns((GetRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+                {
+                    Verifier.CheckRequest(r);
+
+                    return new AsyncUnaryCall<GetResponse>(
+                        Task.FromResult(response),
+                        Task.FromResult(ResponseMetaData),
+                        () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                        () => ResponseMetaData,
+                        () => { });
+                });
+
+        return mock;
+    }
+}

src/FrostFS.SDK.Tests/Mocks/ContainerServiceMocks/PutContainerMock.cs

@@ -11,7 +11,7 @@ using FrostFS.Refs;
 
 namespace FrostFS.SDK.Tests;
 
-public class PutContainerMock(string key) : ContainerServiceBase(key)
+public class PutContainerMockFactory(string key) : ContainerServiceBase(key)
 {
     public override Mock<ContainerService.ContainerServiceClient> GetMock()
     {

src/FrostFS.SDK.Tests/Mocks/NetmapMock.cs

@@ -3,7 +3,7 @@ using FrostFS.Netmap;
 
 namespace FrostFS.SDK.Tests;
 
-public class NetmapMock(string key) : ServiceBase(key)
+public class NetmapMockFactory(string key) : ServiceBase(key)
 {
     public Mock<NetmapService.NetmapServiceClient> GetMock()
     {

src/FrostFS.SDK.Tests/Mocks/ObjectMock.cs

@@ -0,0 +1,101 @@
+using Moq;
+using FrostFS.Object;
+using Grpc.Core;
+using FrostFS.SDK.ClientV2;
+using FrostFS.Session;
+using Google.Protobuf;
+using System.Security.Cryptography;
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+using FrostFS.SDK.ModelsV2;
+
+namespace FrostFS.SDK.Tests;
+
+public class ObjectMockFactory(string key) : ObjectServiceBase(key)
+{
+    public override Mock<ObjectService.ObjectServiceClient> GetMock()
+    {
+        var mock = new Mock<ObjectService.ObjectServiceClient>();
+
+        GetResponse response = new() 
+        {
+            Body = new GetResponse.Types.Body
+            {                 
+            },
+            MetaHeader = ResponseMetaHeader
+        };
+
+        response.VerifyHeader = GetResponseVerificationHeader(response);
+
+        mock.Setup(x => x.Get(
+            It.IsAny<GetRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()))
+             .Returns((GetRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+                {
+                    Verifier.CheckRequest(r);
+
+                     return new AsyncServerStreamingCall<GetResponse>(
+                        new AsyncStreamReaderMock(key, ObjectHeader),
+                        Task.FromResult(ResponseMetaData),
+                        () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                        () => ResponseMetaData,
+                        () => { });
+                });
+
+        return mock;
+    }
+
+    public ObjectHeader ObjectHeader { get; set; }
+}
+
+public class AsyncStreamReaderMock(string key, ObjectHeader objectHeader) : ServiceBase(key), IAsyncStreamReader<GetResponse>
+{
+    public GetResponse Current
+    {
+        get
+        {
+            var ecdsaKey = key.LoadWif();
+
+            var header = new Header
+            {
+                ContainerId =  objectHeader.ContainerId.ToGrpcMessage(),
+                PayloadLength = objectHeader.PayloadLength,
+                Version = objectHeader.Version!.ToGrpcMessage(),
+                OwnerId = objectHeader.OwnerId!.ToGrpcMessage()
+            };
+
+            foreach (var attr in objectHeader.Attributes)
+                header.Attributes.Add(attr.ToGrpcMessage());
+
+            var response = new GetResponse
+            {
+                Body = new GetResponse.Types.Body
+                {
+                    Init = new GetResponse.Types.Body.Types.Init
+                    {
+                        Header = header,
+                        ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom(SHA256.HashData(Array.Empty<byte>())) },
+                        Signature = new Refs.Signature
+                        {
+                            Key = ByteString.CopyFrom(ecdsaKey.PublicKey()),
+                            Sign = ByteString.CopyFrom(ecdsaKey.SignData(header.ToByteArray())),
+                        }
+                    }
+                },
+                MetaHeader = new ResponseMetaHeader()
+            };
+
+            response.VerifyHeader = GetResponseVerificationHeader(response);
+
+            return response;
+        }
+    }
+
+    public Task<bool> MoveNext(CancellationToken cancellationToken)
+    {
+        return Task.FromResult(true);
+    }
+}
+

src/FrostFS.SDK.Tests/Mocks/SessionMock.cs

@@ -0,0 +1,57 @@
+using Moq;
+using FrostFS.Session;
+using Grpc.Core;
+using FrostFS.SDK.ClientV2;
+using Google.Protobuf;
+
+namespace FrostFS.SDK.Tests;
+
+public class SessionMockFactory(string key) : ServiceBase(key)
+{
+    public byte[]? SessionId { get; set; }
+
+    public byte[]? SessionKey { get; set; }
+    
+    public Mock<SessionService.SessionServiceClient> GetMock()
+    {
+        var mock = new Mock<SessionService.SessionServiceClient>();
+
+        Random rand = new();
+        SessionId = new byte[32];
+        SessionKey = new byte[32];
+
+        rand.NextBytes(SessionId);
+        rand.NextBytes(SessionKey);
+
+        CreateResponse response = new()
+        {
+            Body = new CreateResponse.Types.Body
+            {
+                Id = ByteString.CopyFrom(SessionId),
+                SessionKey = ByteString.CopyFrom(SessionId)
+            },
+            MetaHeader = ResponseMetaHeader
+        };
+
+        response.VerifyHeader = GetResponseVerificationHeader(response);
+
+        mock.Setup(x => x.CreateAsync(
+            It.IsAny<CreateRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()))
+             .Returns((CreateRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+                {
+                    Verifier.CheckRequest(r);
+
+                     return new AsyncUnaryCall<CreateResponse>(
+                        Task.FromResult(response),
+                        Task.FromResult(ResponseMetaData),
+                        () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                        () => ResponseMetaData,
+                        () => { });
+                });
+
+        return mock;
+    }
+}

src/FrostFS.SDK.Tests/ObjectMock.cs

@@ -1,14 +0,0 @@
-using Moq;
-using FrostFS.Object;
-
-namespace FrostFS.SDK.Tests;
-
-public class ObjectMock(string key) : ServiceBase(key)
-{
-    public Mock<ObjectService.ObjectServiceClient> GetMock()
-    {
-        var mock = new Mock<ObjectService.ObjectServiceClient>();
-
-        return mock;
-    }
-}

src/FrostFS.SDK.Tests/ObjectTest.cs

@@ -0,0 +1,66 @@
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Netmap;
+using Microsoft.Extensions.Options;
+
+using System.Security.Cryptography;
+
+namespace FrostFS.SDK.Tests;
+
+public class ObjectTest
+{
+    private readonly string key = "KwHDAJ66o8FoLBjVbjP2sWBmgBMGjt7Vv4boA7xQrBoAYBE397Aq";
+
+    [Fact]
+    public async void GetObjectTest()
+    {
+        var ecdsaKey = key.LoadWif();
+        ContainerId cntId = new("xyz");
+
+        ObjectHeader header = new(cntId, ModelsV2.Enums.ObjectType.Regular, [new ObjectAttribute("k", "v")])
+        {
+            PayloadLength = 1,
+            Version = new ModelsV2.Version(2, 13),
+            OwnerId = OwnerId.FromKey(ecdsaKey)
+        };
+
+        var objectMockFactory = new ObjectMockFactory(this.key)
+        {
+            PlacementPolicy = new PlacementPolicy(true, new Replica(1)),
+            Version = new ModelsV2.Version(2, 13),
+            ContainerGuid = Guid.NewGuid(),
+            ObjectHeader = header
+        };
+        
+        var settings = Options.Create(new ClientSettings
+        {
+            Key = key,
+            Host = "http://localhost:8080"
+        });
+
+        var fsClient = Client.GetTestInstance(
+            settings,
+            null,
+            new NetmapMockFactory(this.key).GetMock().Object,
+            new SessionMockFactory(this.key).GetMock().Object,
+            new ContainerStub(this.key).GetMock().Object,
+            objectMockFactory.GetMock().Object);
+
+        var objectId = fsClient.CalculateObjectId(header);
+
+        var containerId = new ContainerId(Base58.Encode(objectMockFactory.ContainerGuid.ToBytes()));
+
+        var result = await fsClient.GetObjectAsync(containerId, objectId);
+
+        Assert.NotNull(result);
+
+        Assert.Equal(header.ContainerId.Value, result.Header.ContainerId.Value);
+        Assert.Equal(header.OwnerId.ToGrpcMessage().ToString(), result.Header.OwnerId!.Value);
+        Assert.Equal(header.PayloadLength, result.Header.PayloadLength);
+        Assert.Single(result.Header.Attributes);
+        Assert.Equal(header.Attributes[0].Key, result.Header.Attributes[0].Key);
+        Assert.Equal(header.Attributes[0].Value,result.Header.Attributes[0].Value);
+    }
+}

src/FrostFS.SDK.Tests/SessionMock.cs

@@ -1,14 +0,0 @@
-using Moq;
-using FrostFS.Session;
-
-namespace FrostFS.SDK.Tests;
-
-public class SessionMock(string key) : ServiceBase(key)
-{
-    public Mock<SessionService.SessionServiceClient> GetMock()
-    {
-        var mock = new Mock<SessionService.SessionServiceClient>();
-
-        return mock;
-    }
-}