Lots of work on the serializer

NexusMods.EventSourcing.sln

@@ -36,12 +36,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "benchmarks", "benchmarks",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.EventSourcing.Benchmarks", "benchmarks\NexusMods.EventSourcing.Benchmarks\NexusMods.EventSourcing.Benchmarks.csproj", "{96977D99-BF4B-4952-B594-6E44CCD826B9}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.EventSourcing.FasterKV", "src\NexusMods.EventSourcing.FasterKV\NexusMods.EventSourcing.FasterKV.csproj", "{AFB69777-0A6A-4C61-A621-32C894673002}"
-EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.EventSourcing.RocksDB", "src\NexusMods.EventSourcing.RocksDB\NexusMods.EventSourcing.RocksDB.csproj", "{B8D0772A-FAD1-49AD-A85B-B2B6C5B14420}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NexusMods.EventSourcing.LMDB", "src\NexusMods.EventSourcing.LMDB\NexusMods.EventSourcing.LMDB.csproj", "{4D9C9933-B3F9-4713-B3C7-A7C5E3D47E14}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -53,9 +49,7 @@ Global
 		{6737673E-5898-42EC-B0B2-60DE2CFFF0AF} = {0377EBE6-F147-4233-86AD-32C821B9567E}
 		{66DCB10E-1D80-4A83-8380-B2E08BEEE7AE} = {6ED01F9D-5E12-4EB2-9601-64A2ADC719DE}
 		{96977D99-BF4B-4952-B594-6E44CCD826B9} = {72AFE85F-8C12-436A-894E-638ED2C92A76}
-		{AFB69777-0A6A-4C61-A621-32C894673002} = {0377EBE6-F147-4233-86AD-32C821B9567E}
 		{B8D0772A-FAD1-49AD-A85B-B2B6C5B14420} = {0377EBE6-F147-4233-86AD-32C821B9567E}
-		{4D9C9933-B3F9-4713-B3C7-A7C5E3D47E14} = {0377EBE6-F147-4233-86AD-32C821B9567E}
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{A92DED3D-BC67-4E04-9A06-9A1B302B3070}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
@@ -78,17 +72,9 @@ Global
 		{96977D99-BF4B-4952-B594-6E44CCD826B9}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{96977D99-BF4B-4952-B594-6E44CCD826B9}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{96977D99-BF4B-4952-B594-6E44CCD826B9}.Release|Any CPU.Build.0 = Release|Any CPU
-		{AFB69777-0A6A-4C61-A621-32C894673002}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{AFB69777-0A6A-4C61-A621-32C894673002}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{AFB69777-0A6A-4C61-A621-32C894673002}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{AFB69777-0A6A-4C61-A621-32C894673002}.Release|Any CPU.Build.0 = Release|Any CPU
 		{B8D0772A-FAD1-49AD-A85B-B2B6C5B14420}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{B8D0772A-FAD1-49AD-A85B-B2B6C5B14420}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B8D0772A-FAD1-49AD-A85B-B2B6C5B14420}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{B8D0772A-FAD1-49AD-A85B-B2B6C5B14420}.Release|Any CPU.Build.0 = Release|Any CPU
-		{4D9C9933-B3F9-4713-B3C7-A7C5E3D47E14}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{4D9C9933-B3F9-4713-B3C7-A7C5E3D47E14}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{4D9C9933-B3F9-4713-B3C7-A7C5E3D47E14}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{4D9C9933-B3F9-4713-B3C7-A7C5E3D47E14}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

benchmarks/NexusMods.EventSourcing.Benchmarks/ABenchmark.cs

@@ -2,11 +2,7 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using NexusMods.EventSourcing.Abstractions;
-using NexusMods.EventSourcing.FasterKV;
-using NexusMods.EventSourcing.RocksDB;
 using NexusMods.EventSourcing.TestModel;
-using NexusMods.Paths;
-using Settings = NexusMods.EventSourcing.FasterKV.Settings;
 
 namespace NexusMods.EventSourcing.Benchmarks;
 
@@ -37,22 +33,6 @@ public void MakeStore(Type type)
         {
             eventStore = new InMemoryEventStore<EventSerializer>(serializer);
         }
-        else if (type == typeof(FasterKVEventStore<EventSerializer>))
-        {
-            eventStore = new FasterKVEventStore<EventSerializer>(serializer,
-                new Settings
-                {
-                    StorageLocation = FileSystem.Shared.GetKnownPath(KnownPath.EntryDirectory).Combine("FasterKV.EventStore" + Guid.NewGuid())
-                });
-        }
-        else if (type == typeof(RocksDBEventStore<EventSerializer>))
-        {
-            eventStore = new RocksDBEventStore<EventSerializer>(serializer,
-                new RocksDB.Settings
-                {
-                    StorageLocation = FileSystem.Shared.GetKnownPath(KnownPath.EntryDirectory).Combine("FasterKV.EventStore" + Guid.NewGuid())
-                });
-        }
         else
         {
             throw new NotSupportedException($"EventStoreType '{type}' is not supported.");

benchmarks/NexusMods.EventSourcing.Benchmarks/EntityContextBenchmarks.cs

@@ -1,15 +1,10 @@
 using System;
 using BenchmarkDotNet.Attributes;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
 using NexusMods.EventSourcing.Abstractions;
-using NexusMods.EventSourcing.FasterKV;
 using NexusMods.EventSourcing.RocksDB;
 using NexusMods.EventSourcing.TestModel;
 using NexusMods.EventSourcing.TestModel.Events;
 using NexusMods.EventSourcing.TestModel.Model;
-using NexusMods.Paths;
-using Settings = NexusMods.EventSourcing.FasterKV.Settings;
 
 namespace NexusMods.EventSourcing.Benchmarks;
 

benchmarks/NexusMods.EventSourcing.Benchmarks/NexusMods.EventSourcing.Benchmarks.csproj

@@ -9,7 +9,6 @@
 
     <ItemGroup>
       <ProjectReference Include="..\..\src\NexusMods.EventSourcing.Abstractions\NexusMods.EventSourcing.Abstractions.csproj" />
-      <ProjectReference Include="..\..\src\NexusMods.EventSourcing.FasterKV\NexusMods.EventSourcing.FasterKV.csproj" />
       <ProjectReference Include="..\..\src\NexusMods.EventSourcing.RocksDB\NexusMods.EventSourcing.RocksDB.csproj" />
       <ProjectReference Include="..\..\src\NexusMods.EventSourcing\NexusMods.EventSourcing.csproj" />
       <ProjectReference Include="..\..\tests\NexusMods.EventSourcing.TestModel\NexusMods.EventSourcing.TestModel.csproj" />

benchmarks/NexusMods.EventSourcing.Benchmarks/Program.cs

@@ -2,9 +2,7 @@
 
 using System;
 using BenchmarkDotNet.Running;
-using NexusMods.EventSourcing;
 using NexusMods.EventSourcing.Benchmarks;
-using NexusMods.EventSourcing.FasterKV;
 using NexusMods.EventSourcing.RocksDB;
 using NexusMods.EventSourcing.TestModel;
 

src/NexusMods.EventSourcing.Abstractions/IEventSerializer.cs

@@ -1,7 +1,11 @@
 using System;
+using System.Buffers;
 
 namespace NexusMods.EventSourcing.Abstractions;
 
+/// <summary>
+/// A serializer for events, is typed to a specific writer type to reduce virtual calls internally
+/// </summary>
 public interface IEventSerializer
 {
     /// <summary>

src/NexusMods.EventSourcing.Abstractions/Serialization/ISerializer.cs

@@ -0,0 +1,17 @@
+using System;
+using System.IO;
+
+namespace NexusMods.EventSourcing.Abstractions.Serialization;
+
+public interface ISerializer
+{
+    public bool CanSerialize(Type valueType);
+    public bool TryGetFixedSize(Type valueType, out int size);
+}
+
+
+public interface IFixedSizeSerializer<T> : ISerializer
+{
+    public void Serialize(T value, Span<byte> output);
+    public T Deserialize(Span<byte> from);
+}