Migrated to MessagePack instead of BinaryFormatter

src/csharp/Extensions/Microsoft.Spark.Extensions.DotNet.Interactive.UnitTest/Microsoft.Spark.Extensions.DotNet.Interactive.UnitTest.csproj

@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>Microsoft.Spark.Extensions.DotNet.Interactive.UnitTest</RootNamespace>
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
 
   <ItemGroup>

src/csharp/Microsoft.Spark.E2ETest.ExternalLibrary/ExternalClass.cs

@@ -9,11 +9,11 @@ namespace Microsoft.Spark.E2ETest.ExternalLibrary
     [Serializable]
     public class ExternalClass
     {
-        private string _s;
+        private string s;
 
         public ExternalClass(string s)
         {
-            _s = s;
+            this.s = s;
         }
 
         public static string HelloWorld()
@@ -23,7 +23,7 @@ public static string HelloWorld()
 
         public string Concat(string s)
         {
-            return _s + s;
+            return this.s + s;
         }
     }
 }

src/csharp/Microsoft.Spark.E2ETest/IpcTests/BroadcastTests.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using MessagePack;
 using Microsoft.Spark.Sql;
 using Xunit;
 using static Microsoft.Spark.Sql.Functions;
@@ -12,10 +13,11 @@ public class TestBroadcastVariable
         public int IntValue { get; private set; }
         public string StringValue { get; private set; }
 
-        public TestBroadcastVariable(int intVal, string stringVal)
+        [SerializationConstructor]
+        public TestBroadcastVariable(int intValue, string stringValue)
         {
-            IntValue = intVal;
-            StringValue = stringVal;
+            IntValue = intValue;
+            StringValue = stringValue;
         }
     }
 

src/csharp/Microsoft.Spark.E2ETest/Microsoft.Spark.E2ETest.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
   <ItemGroup>
     <Content Include="Resources\*">

src/csharp/Microsoft.Spark.UnitTest/BinarySerDeTests.cs

@@ -0,0 +1,154 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using MessagePack;
+using Microsoft.Spark.Utils;
+using Xunit;
+
+namespace Microsoft.Spark.UnitTest;
+
+[Collection("Spark Unit Tests")]
+public class BinarySerDeTests
+{
+    [Theory]
+    [InlineData(42)]
+    [InlineData("Test")]
+    [InlineData(99.99)]
+    public void Serialize_ShouldWriteObjectToStream(object input)
+    {
+        using var memoryStream = new MemoryStream();
+        BinarySerDe.Serialize(memoryStream, input);
+        memoryStream.Position = 0;
+
+        var deserializedObject = MessagePackSerializer.Typeless.Deserialize(memoryStream);
+
+        Assert.Equal(input, deserializedObject);
+    }
+
+    [Fact]
+    public void Deserialize_ShouldReturnExpectedObject_WhenTypeMatches()
+    {
+        var employee = new Employee { Id = 101, Name = "John Doe" };
+        using var memoryStream = new MemoryStream();
+        MessagePackSerializer.Typeless.Serialize(memoryStream, employee);
+        memoryStream.Position = 0;
+
+        var result = BinarySerDe.Deserialize<Employee>(memoryStream);
+
+        Assert.Equal(employee.Id, result.Id);
+        Assert.Equal(employee.Name, result.Name);
+    }
+
+    [Fact]
+    public void Deserialize_ShouldThrowInvalidCastEx_WhenTypeDoesNotMatch()
+    {
+        var employee = new Employee { Id = 101, Name = "John Doe" };
+        using var memoryStream = new MemoryStream();
+        MessagePackSerializer.Typeless.Serialize(memoryStream, employee);
+        memoryStream.Position = 0;
+
+        var action = () => BinarySerDe.Deserialize<Department>(memoryStream);
+
+        Assert.Throws<InvalidCastException>(action);
+    }
+
+    [Fact]
+    public void Serialize_CustomFunctionAndObject_ShouldBeSerializable()
+    {
+        var department = new Department { Name = "HR", EmployeeCount = 27 };
+        var employeeStub = new Employee
+        {
+            EmbeddedObject = department,
+            Id = 11,
+            Name = "Derek",
+        };
+        using var memoryStream = new MemoryStream();
+        MessagePackSerializer.Typeless.Serialize(memoryStream, employeeStub);
+        memoryStream.Position = 0;
+
+        var deserializedCalculation = BinarySerDe.Deserialize<Employee>(memoryStream);
+
+        Assert.IsType<Department>(deserializedCalculation.EmbeddedObject);
+        Assert.Equal(27, ((Department)deserializedCalculation.EmbeddedObject).EmployeeCount);
+        Assert.Equal("HR", ((Department)deserializedCalculation.EmbeddedObject).Name);
+    }
+
+    [Fact]
+    public void Serialize_ClassWithoutSerializableAttribute_ShouldThrowException()
+    {
+        var nonSerializableClass = new NonSerializableClass { Value = 123 };
+        using var memoryStream = new MemoryStream();
+        BinarySerDe.Serialize(memoryStream, nonSerializableClass);
+        memoryStream.Position = 0;
+
+        Assert.Throws<MessagePackSerializationException>(() => BinarySerDe.Deserialize<NonSerializableClass>(memoryStream));
+    }
+
+    [Fact]
+    public void Serialize_CollectionAndDictionary_ShouldBeSerializable()
+    {
+        var list = new List<int> { 1, 2, 3 };
+        var dictionary = new Dictionary<string, int> { { "one", 1 }, { "two", 2 } };
+
+        using var memoryStream = new MemoryStream();
+        BinarySerDe.Serialize(memoryStream, list);
+        memoryStream.Position = 0;
+        var deserializedList = MessagePackSerializer.Typeless.Deserialize(memoryStream) as List<int>;
+
+        Assert.Equal(list, deserializedList);
+
+        memoryStream.SetLength(0);
+        BinarySerDe.Serialize(memoryStream, dictionary);
+        memoryStream.Position = 0;
+        var deserializedDictionary = MessagePackSerializer.Typeless.Deserialize(memoryStream) as Dictionary<string, int>;
+
+        Assert.Equal(dictionary, deserializedDictionary);
+    }
+
+    [Fact]
+    public void Serialize_PolymorphicObject_ShouldBeSerializable()
+    {
+        Employee manager = new Manager { Id = 1, Name = "Alice", Role = "Account manager" };
+        using var memoryStream = new MemoryStream();
+        BinarySerDe.Serialize(memoryStream, manager);
+        memoryStream.Position = 0;
+
+        var deserializedEmployee = BinarySerDe.Deserialize<Employee>(memoryStream);
+
+        Assert.IsType<Manager>(deserializedEmployee);
+        Assert.Equal("Alice", deserializedEmployee.Name);
+        Assert.Equal("Account manager", ((Manager)deserializedEmployee).Role);
+    }
+
+    [Serializable]
+    private class Employee
+    {
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+
+        public object EmbeddedObject { get; set; }
+    }
+
+    [Serializable]
+    private class Department
+    {
+        public string Name { get; set; }
+        public int EmployeeCount { get; set; }
+    }
+
+    [Serializable]
+    private class Manager : Employee
+    {
+        public string Role { get; set; }
+    }
+
+    private class NonSerializableClass
+    {
+        public int Value { get; init; }
+    }
+}

src/csharp/Microsoft.Spark.UnitTest/Microsoft.Spark.UnitTest.csproj

@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>Microsoft.Spark.UnitTest</RootNamespace>
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
 
   <ItemGroup>

src/csharp/Microsoft.Spark.UnitTest/UdfSerDeTests.cs

@@ -5,7 +5,6 @@
 using System;
 using System.IO;
 using System.Reflection;
-using System.Runtime.Serialization.Formatters.Binary;
 using Microsoft.Spark.Utils;
 using Xunit;
 
@@ -17,21 +16,21 @@ public class UdfSerDeTests
         [Serializable]
         private class TestClass
         {
-            private readonly string _str;
+            private readonly string str;
 
-            public TestClass(string s)
+            public TestClass(string str)
             {
-                _str = s;
+                this.str = str;
             }
 
             public string Concat(string s)
             {
-                if (_str == null)
+                if (str == null)
                 {
                     return s + s;
                 }
 
-                return _str + s;
+                return str + s;
             }
 
             public override bool Equals(object obj)
@@ -43,7 +42,7 @@ public override bool Equals(object obj)
                     return false;
                 }
 
-                return _str == that._str;
+                return str == that.str;
             }
 
             public override int GetHashCode()
@@ -149,16 +148,13 @@ private Delegate SerDe(Delegate udf)
             return Deserialize(Serialize(udf));
         }
 
-#pragma warning disable SYSLIB0011 // Type or member is obsolete
-        // TODO: Replace BinaryFormatter with a new, secure serializer.
         private byte[] Serialize(Delegate udf)
         {
             UdfSerDe.UdfData udfData = UdfSerDe.Serialize(udf);
 
             using (var ms = new MemoryStream())
             {
-                var bf = new BinaryFormatter();
-                bf.Serialize(ms, udfData);
+                BinarySerDe.Serialize(ms, udfData);
                 return ms.ToArray();
             }
         }
@@ -167,11 +163,9 @@ private Delegate Deserialize(byte[] serializedUdf)
         {
             using (var ms = new MemoryStream(serializedUdf, false))
             {
-                var bf = new BinaryFormatter();
-                UdfSerDe.UdfData udfData = (UdfSerDe.UdfData)bf.Deserialize(ms);
+                var udfData = BinarySerDe.Deserialize<UdfSerDe.UdfData>(ms);
                 return UdfSerDe.Deserialize(udfData);
             }
         }
-#pragma warning restore
     }
 }

src/csharp/Microsoft.Spark.Worker.UnitTest/CommandExecutorTests.cs

@@ -8,7 +8,6 @@
 using System.IO;
 using System.Linq;
 using System.Reflection;
-using System.Runtime.Serialization.Formatters.Binary;
 using System.Threading;
 using System.Threading.Tasks;
 using Apache.Arrow;
@@ -1049,10 +1048,8 @@ public void TestRDDCommandExecutor(Version sparkVersion, IpcOptions ipcOptions)
 
             using var inputStream = new MemoryStream();
             using var outputStream = new MemoryStream();
-#pragma warning disable SYSLIB0011 // Type or member is obsolete
+
             // Write test data to the input stream.
-            var formatter = new BinaryFormatter();
-#pragma warning restore SYSLIB0011 // Type or member is obsolete
             var memoryStream = new MemoryStream();
 
             var inputs = new int[] { 0, 1, 2, 3, 4 };
@@ -1061,10 +1058,7 @@ public void TestRDDCommandExecutor(Version sparkVersion, IpcOptions ipcOptions)
             foreach (int input in inputs)
             {
                 memoryStream.Position = 0;
-#pragma warning disable SYSLIB0011 // Type or member is obsolete
-                // TODO: Replace BinaryFormatter with a new, secure serializer.
-                formatter.Serialize(memoryStream, input);
-#pragma warning restore SYSLIB0011 // Type or member is obsolete
+                BinarySerDe.Serialize(memoryStream, input);
                 values.Add(memoryStream.ToArray());
             }
 
@@ -1094,12 +1088,9 @@ public void TestRDDCommandExecutor(Version sparkVersion, IpcOptions ipcOptions)
             for (int i = 0; i < inputs.Length; ++i)
             {
                 Assert.True(SerDe.ReadInt32(outputStream) > 0);
-#pragma warning disable SYSLIB0011 // Type or member is obsolete
-                // TODO: Replace BinaryFormatter with a new, secure serializer.
                 Assert.Equal(
                     mapUdf(i),
-                    formatter.Deserialize(outputStream));
-#pragma warning restore SYSLIB0011 // Type or member is obsolete
+                    BinarySerDe.Deserialize<object>(outputStream));
             }
 
             // Validate all the data on the stream is read.

src/csharp/Microsoft.Spark.Worker.UnitTest/Microsoft.Spark.Worker.UnitTest.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Moq" Version="4.20.70" />

src/csharp/Microsoft.Spark.Worker/Command/RDDCommandExecutor.cs

@@ -5,7 +5,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Runtime.Serialization.Formatters.Binary;
 using Microsoft.Spark.Interop.Ipc;
 using Microsoft.Spark.Utils;
 
@@ -19,10 +18,6 @@ internal class RDDCommandExecutor
     {
         [ThreadStatic]
         private static MemoryStream s_writeOutputStream;
-        [ThreadStatic]
-#pragma warning disable SYSLIB0011 // Type or member is obsolete
-        private static BinaryFormatter s_binaryFormatter;
-#pragma warning restore SYSLIB0011 // Type or member is obsolete
 
         /// <summary>
         /// Executes the commands on the input data read from input stream
@@ -113,11 +108,7 @@ private void Serialize(
             switch (serializerMode)
             {
                 case CommandSerDe.SerializedMode.Byte:
-#pragma warning disable SYSLIB0011 // Type or member is obsolete
-                    BinaryFormatter formatter = s_binaryFormatter ??= new BinaryFormatter();
-                    // TODO: Replace BinaryFormatter with a new, secure serializer.
-                    formatter.Serialize(stream, message);
-#pragma warning restore SYSLIB0011 // Type or member is obsolete
+                    BinarySerDe.Serialize(stream, message);
                     break;
                 case CommandSerDe.SerializedMode.None:
                 case CommandSerDe.SerializedMode.String:

src/csharp/Microsoft.Spark.Worker/Microsoft.Spark.Worker.csproj

@@ -4,7 +4,6 @@
     <TargetFrameworks>net48;net8.0</TargetFrameworks>
     <TargetFrameworks Condition="'$(OS)' != 'Windows_NT'">net8.0</TargetFrameworks>
     <RootNamespace>Microsoft.Spark.Worker</RootNamespace>
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
   <ItemGroup>