ERA history import/export start

R#eceipt decoder

src/Nethermind/Directory.Packages.props

@@ -25,6 +25,7 @@
     <PackageVersion Include="Grpc" Version="2.46.6" />
     <PackageVersion Include="Grpc.Tools" Version="2.56.2" />
     <PackageVersion Include="HexMate" Version="0.0.3" />
+    <PackageVersion Include="IronSnappy" Version="1.3.1" />
     <PackageVersion Include="Jint" Version="2.11.58" />
     <PackageVersion Include="MathNet.Numerics.FSharp" Version="5.0.0" />
     <PackageVersion Include="Microsoft.AspNetCore.DataProtection" Version="7.0.9" />
@@ -67,6 +68,7 @@
     <PackageVersion Include="SCrypt" Version="2.0.0.2" />
     <PackageVersion Include="Seq.Api" Version="2023.3.0" />
     <PackageVersion Include="Shouldly" Version="4.2.1" />
+    <PackageVersion Include="Snappier" Version="1.1.1" />
     <PackageVersion Include="Snappy.Standard" Version="0.2.0" />
     <PackageVersion Include="System.Configuration.ConfigurationManager" Version="7.0.0" />
     <PackageVersion Include="System.Diagnostics.TextWriterTraceListener" Version="4.3.0" />

src/Nethermind/Nethermind.Era.Test/GlobalUsings.cs

@@ -0,0 +1,4 @@
+// SPDX-FileCopyrightText: 2023 Demerzel Solutions Limited
+// SPDX-License-Identifier: LGPL-3.0-only
+
+global using NUnit.Framework;

src/Nethermind/Nethermind.Era.Test/Nethermind.Era1.Test.csproj

@@ -0,0 +1,68 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.msbuild">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="NSubstitute" />
+    <PackageReference Include="NUnit" />
+    <PackageReference Include="NUnit.Analyzers">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NUnit3TestAdapter" />
+    <PackageReference Include="Snappier" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Nethermind.History.Era1\Nethermind.Era1.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="data\checksums.txt">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00000-096013b1.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00001-440820aa.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00002-f324ec16.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00003-627b9dce.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00004-08ecec94.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00005-e2d2b70f.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00006-286c2ca5.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00007-c9075184.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\mainnet-00008-bfd52f39.era1">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="data\raw">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

src/Nethermind/Nethermind.Era.Test/UnitTest1.cs

@@ -0,0 +1,70 @@
+// SPDX-FileCopyrightText: 2023 Demerzel Solutions Limited
+// SPDX-License-Identifier: LGPL-3.0-only
+
+using Nethermind.Core;
+using Nethermind.Era1;
+using Nethermind.Serialization.Rlp;
+using NUnit.Framework.Constraints;
+using Snappier;
+namespace Nethermind.Era.Test;
+
+public class Tests
+{
+    [SetUp]
+    public void Setup()
+    {
+    }
+
+    [Test]
+    public async Task Test1()
+    {
+        var ms = new MemoryStream();    
+        var sut = await E2Store.FromStream(ms);
+
+        sut.WriteEntry(E2Store.TypeVersion, Array.Empty<byte>());
+    }
+
+    [Test]
+    public async Task TestHistoryImport()
+    {
+        var sut = await EraIterator.Create("data/mainnet-00000-096013b1.era1");
+
+        await foreach ((Block b, TxReceipt[] r) in sut)
+        {
+        }
+    }
+
+    [Test]  
+    public async Task TestE2Store()
+    {
+        var sut = await E2Store.FromStream(File.OpenRead("data/mainnet-00000-096013b1.era1"));
+
+        var testData = Convert.FromHexString("FF060000734E6150705900B00000FCED3AFBFB0310F901F8A0007A010088A01DCC4DE8DEC75D7AAB85B567B6CCD41AD312451B948A7413F0A142FD40D4934794004A4200F043A09F88BE00EEE1114EDFD9372F52560AAB3980A142EFE8B5B39A09644075084275A056E81F171BCC55A6FF8345E692C0F86E5B48E01B996CADC001622FB5E363B421A0567A210004B9014A7800FE0100FE0100FE0100B601002C83020000808347E7C480808082C90134880000000000000000843B9ACA00");
+
+        var compressedHeaders = await sut.FindAll(E2Store.TypeCompressedHeader);
+
+        foreach (var cb in compressedHeaders)
+        {
+            try
+            {
+                void Test()
+                {
+                    var output = new byte[1000];
+                    var decompressionStream = new SnappyStream(cb.ValueAsStream(), System.IO.Compression.CompressionMode.Decompress);
+                    var x = decompressionStream.Read(output, 0, output.Length);
+                    var s = new Span<byte>(output, 0, x);
+                    var decoded = Rlp.Decode<BlockHeader>(s);
+
+                }
+                Test();
+
+            }
+            catch (InvalidDataException)
+            {
+                continue;
+            }
+
+        }
+    }
+
+}

src/Nethermind/Nethermind.Era.Test/data/checksums.txt

@@ -0,0 +1,9 @@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