Restructure solution layout by module
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master
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using System.Text;
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using FluentAssertions;
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using Microsoft.Extensions.Logging.Abstractions;
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using Microsoft.Extensions.Options;
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using Microsoft.Extensions.Time.Testing;
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using StellaOps.Scanner.Cache;
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using StellaOps.Scanner.Cache.Abstractions;
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using StellaOps.Scanner.Cache.FileCas;
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using StellaOps.Scanner.Cache.LayerCache;
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using Xunit;
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namespace StellaOps.Scanner.Cache.Tests;
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public sealed class LayerCacheRoundTripTests : IAsyncLifetime
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{
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private readonly string _rootPath;
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private readonly FakeTimeProvider _timeProvider;
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private readonly IOptions<ScannerCacheOptions> _options;
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private readonly LayerCacheStore _layerCache;
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private readonly FileContentAddressableStore _fileCas;
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public LayerCacheRoundTripTests()
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{
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_rootPath = Path.Combine(Path.GetTempPath(), "stellaops-cache-tests", Guid.NewGuid().ToString("N"));
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Directory.CreateDirectory(_rootPath);
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_timeProvider = new FakeTimeProvider(new DateTimeOffset(2025, 10, 19, 12, 0, 0, TimeSpan.Zero));
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var optionsValue = new ScannerCacheOptions
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{
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RootPath = _rootPath,
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LayerTtl = TimeSpan.FromHours(1),
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FileTtl = TimeSpan.FromHours(2),
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MaxBytes = 512 * 1024, // 512 KiB
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WarmBytesThreshold = 256 * 1024,
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ColdBytesThreshold = 400 * 1024,
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MaintenanceInterval = TimeSpan.FromMinutes(5)
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};
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_options = Options.Create(optionsValue);
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_layerCache = new LayerCacheStore(_options, NullLogger<LayerCacheStore>.Instance, _timeProvider);
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_fileCas = new FileContentAddressableStore(_options, NullLogger<FileContentAddressableStore>.Instance, _timeProvider);
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}
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[Fact]
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public async Task RoundTrip_Succeeds_And_Respects_Ttl_And_ImportExport()
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{
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var layerDigest = "sha256:abcd1234";
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var metadata = new Dictionary<string, string>
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{
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["image"] = "ghcr.io/stella/sample:1",
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["schema"] = "1.0"
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};
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using var inventoryStream = CreateStream("inventory" + Environment.NewLine + "component:libfoo" + Environment.NewLine);
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using var usageStream = CreateStream("usage" + Environment.NewLine + "component:bin" + Environment.NewLine);
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var request = new LayerCachePutRequest(
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layerDigest,
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architecture: "linux/amd64",
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mediaType: "application/vnd.oci.image.layer.v1.tar",
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metadata,
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new List<LayerCacheArtifactContent>
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{
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new("inventory.cdx.json", inventoryStream, "application/json"),
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new("usage.cdx.json", usageStream, "application/json")
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});
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var stored = await _layerCache.PutAsync(request, CancellationToken.None);
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stored.LayerDigest.Should().Be(layerDigest);
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stored.Artifacts.Should().ContainKey("inventory.cdx.json");
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stored.TotalSizeBytes.Should().BeGreaterThan(0);
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var cached = await _layerCache.TryGetAsync(layerDigest, CancellationToken.None);
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cached.Should().NotBeNull();
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cached!.Metadata.Should().ContainKey("image");
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await using (var artifact = await _layerCache.OpenArtifactAsync(layerDigest, "inventory.cdx.json", CancellationToken.None))
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{
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artifact.Should().NotBeNull();
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using var reader = new StreamReader(artifact!, Encoding.UTF8);
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var content = await reader.ReadToEndAsync();
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content.Should().Contain("component:libfoo");
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}
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// Store file CAS entry and validate export/import lifecycle.
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var casHash = "sha256:" + new string('f', 64);
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using var casStream = CreateStream("some-cas-content");
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await _fileCas.PutAsync(new FileCasPutRequest(casHash, casStream), CancellationToken.None);
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var exportPath = Path.Combine(_rootPath, "export");
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var exportCount = await _fileCas.ExportAsync(exportPath, CancellationToken.None);
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exportCount.Should().Be(1);
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await _fileCas.RemoveAsync(casHash, CancellationToken.None);
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(await _fileCas.TryGetAsync(casHash, CancellationToken.None)).Should().BeNull();
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var importCount = await _fileCas.ImportAsync(exportPath, CancellationToken.None);
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importCount.Should().Be(1);
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var imported = await _fileCas.TryGetAsync(casHash, CancellationToken.None);
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imported.Should().NotBeNull();
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imported!.RelativePath.Should().EndWith("content.bin");
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// TTL eviction
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_timeProvider.Advance(TimeSpan.FromHours(2));
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await _layerCache.EvictExpiredAsync(CancellationToken.None);
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(await _layerCache.TryGetAsync(layerDigest, CancellationToken.None)).Should().BeNull();
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// Compaction removes CAS entry once over threshold.
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// Force compaction by writing a large entry.
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using var largeStream = CreateStream(new string('x', 400_000));
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var largeHash = "sha256:" + new string('e', 64);
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await _fileCas.PutAsync(new FileCasPutRequest(largeHash, largeStream), CancellationToken.None);
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_timeProvider.Advance(TimeSpan.FromMinutes(1));
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await _fileCas.CompactAsync(CancellationToken.None);
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(await _fileCas.TryGetAsync(casHash, CancellationToken.None)).Should().BeNull();
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}
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public Task InitializeAsync() => Task.CompletedTask;
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public Task DisposeAsync()
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{
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try
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{
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if (Directory.Exists(_rootPath))
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{
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Directory.Delete(_rootPath, recursive: true);
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}
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}
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catch
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{
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// Ignored – best effort cleanup.
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}
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return Task.CompletedTask;
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}
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private static MemoryStream CreateStream(string content)
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=> new(Encoding.UTF8.GetBytes(content));
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}
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@@ -0,0 +1,26 @@
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<?xml version='1.0' encoding='utf-8'?>
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net10.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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<IsPackable>false</IsPackable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="FluentAssertions" Version="6.12.0" />
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<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.0-rc.2.25502.107" />
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</ItemGroup>
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<ItemGroup>
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<Compile Remove="..\StellaOps.Concelier.Tests.Shared\AssemblyInfo.cs" />
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<Compile Remove="..\StellaOps.Concelier.Tests.Shared\MongoFixtureCollection.cs" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Remove="..\StellaOps.Concelier.Testing\StellaOps.Concelier.Testing.csproj" />
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</ItemGroup>
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<ItemGroup>
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<Using Remove="StellaOps.Concelier.Testing" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="../../__Libraries/StellaOps.Scanner.Cache/StellaOps.Scanner.Cache.csproj" />
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</ItemGroup>
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</Project>
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