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Refactor code structure and optimize performance across multiple modules

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StellaOps Bot
2025-12-26 20:03:22 +02:00
parent c786faae84
commit b4fc66feb6
3353 changed files with 88254 additions and 1590657 deletions
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302
src/__Tests/__Benchmarks/binary-lookup/Benchmarks/BinaryLookupBenchmarks.cs Normal file
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// -----------------------------------------------------------------------------
// BinaryLookupBenchmarks.cs
// Sprint: SPRINT_20251226_014_BINIDX
// Task: SCANINT-20 - Performance benchmarks for binary lookup
// -----------------------------------------------------------------------------
using System.Collections.Immutable;
using BenchmarkDotNet.Attributes;
using StellaOps.BinaryIndex.Core.Models;
using StellaOps.BinaryIndex.Core.Services;
namespace StellaOps.Bench.BinaryLookup.Benchmarks;
/// <summary>
/// Performance benchmarks for binary vulnerability lookup operations.
/// Measures single and batch lookup performance, cache efficiency,
/// and overall throughput for scanner integration.
/// </summary>
[MemoryDiagnoser]
[SimpleJob(warmupCount: 3, iterationCount: 10)]
public class BinaryLookupBenchmarks
{
private readonly BinaryIdentity[] _testIdentities = GenerateTestIdentities(100);
private readonly byte[][] _testFingerprints = GenerateTestFingerprints(100);
[Params(1, 10, 50, 100)]
public int BatchSize { get; set; }
/// <summary>
/// Generate sample binary identities for benchmarking.
/// </summary>
private static BinaryIdentity[] GenerateTestIdentities(int count)
{
return Enumerable.Range(0, count).Select(i => new BinaryIdentity
{
Format = BinaryFormat.Elf,
BuildId = GenerateBuildId(i),
FileSha256 = GenerateSha256(i),
Architecture = "x86_64",
BinaryKey = $"libtest{i}:1.0.{i}"
}).ToArray();
}
/// <summary>
/// Generate sample fingerprints for benchmarking.
/// </summary>
private static byte[][] GenerateTestFingerprints(int count)
{
return Enumerable.Range(0, count)
.Select(i => GenerateFingerprintBytes(i))
.ToArray();
}
private static string GenerateBuildId(int seed)
{
// Generate deterministic 40-char hex build ID
var bytes = new byte[20];
for (int i = 0; i < 20; i++)
{
bytes[i] = (byte)((seed + i * 17) % 256);
}
return Convert.ToHexString(bytes).ToLowerInvariant();
}
private static string GenerateSha256(int seed)
{
var bytes = new byte[32];
for (int i = 0; i < 32; i++)
{
bytes[i] = (byte)((seed + i * 31) % 256);
}
return "sha256:" + Convert.ToHexString(bytes).ToLowerInvariant();
}
private static byte[] GenerateFingerprintBytes(int seed)
{
var bytes = new byte[64];
for (int i = 0; i < 64; i++)
{
bytes[i] = (byte)((seed + i * 13) % 256);
}
return bytes;
}
/// <summary>
/// Benchmark binary identity extraction from Build-ID.
/// Target: < 1ms per identity
/// </summary>
[Benchmark(Description = "Identity extraction from Build-ID")]
public BinaryIdentity BenchmarkIdentityExtraction()
{
return new BinaryIdentity
{
Format = BinaryFormat.Elf,
BuildId = "8d8f09a0d7e2c1b3a5f4e6d8c0b2a4e6f8d0c2b4",
FileSha256 = "sha256:abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890",
Architecture = "x86_64",
BinaryKey = "openssl:1.1.1w-1"
};
}
/// <summary>
/// Benchmark batch identity creation for scanner integration.
/// Target: < 10ms per batch of 100
/// </summary>
[Benchmark(Description = "Batch identity creation")]
public ImmutableArray<BinaryIdentity> BenchmarkBatchIdentityCreation()
{
return _testIdentities.Take(BatchSize)
.ToImmutableArray();
}
/// <summary>
/// Benchmark fingerprint hash computation.
/// Target: < 5ms per fingerprint
/// </summary>
[Benchmark(Description = "Fingerprint hash computation")]
public string BenchmarkFingerprintHash()
{
var fingerprint = _testFingerprints[0];
using var sha256 = System.Security.Cryptography.SHA256.Create();
var hash = sha256.ComputeHash(fingerprint);
return Convert.ToHexString(hash);
}
/// <summary>
/// Benchmark batch fingerprint comparison.
/// Target: < 100ms for 100 comparisons
/// </summary>
[Benchmark(Description = "Batch fingerprint comparison")]
public int BenchmarkBatchFingerprintComparison()
{
var target = _testFingerprints[0];
var matches = 0;
for (int i = 0; i < BatchSize; i++)
{
var candidate = _testFingerprints[i];
var similarity = ComputeHammingSimilarity(target, candidate);
if (similarity > 0.7)
{
matches++;
}
}
return matches;
}
/// <summary>
/// Benchmark binary key generation for lookup.
/// Target: < 0.1ms per key
/// </summary>
[Benchmark(Description = "Binary key generation")]
public string BenchmarkBinaryKeyGeneration()
{
var identity = _testIdentities[0];
return $"{identity.BinaryKey}:{identity.Architecture}:{identity.Format}";
}
/// <summary>
/// Benchmark lookup key construction with distro.
/// Target: < 0.1ms per key
/// </summary>
[Benchmark(Description = "Distro-aware lookup key")]
public string BenchmarkDistroLookupKey()
{
var identity = _testIdentities[0];
var distro = "debian";
var release = "bookworm";
return $"{distro}:{release}:{identity.BinaryKey}";
}
private static double ComputeHammingSimilarity(byte[] a, byte[] b)
{
if (a.Length != b.Length) return 0.0;
var matching = 0;
var total = a.Length * 8;
for (int i = 0; i < a.Length; i++)
{
var xor = (byte)(a[i] ^ b[i]);
matching += 8 - PopCount(xor);
}
return (double)matching / total;
}
private static int PopCount(byte b)
{
var count = 0;
while (b != 0)
{
count += b & 1;
b >>= 1;
}
return count;
}
}
/// <summary>
/// Benchmarks for cache layer performance.
/// </summary>
[MemoryDiagnoser]
[SimpleJob(warmupCount: 3, iterationCount: 10)]
public class CacheLayerBenchmarks
{
private readonly Dictionary<string, object> _mockCache = new();
private readonly string[] _testKeys;
public CacheLayerBenchmarks()
{
// Pre-populate cache with test data
_testKeys = Enumerable.Range(0, 1000)
.Select(i => $"binary:tenant1:buildid{i:D8}")
.ToArray();
foreach (var key in _testKeys.Take(800)) // 80% pre-cached
{
_mockCache[key] = new { Matches = Array.Empty<object>() };
}
}
[Params(10, 100, 500)]
public int LookupCount { get; set; }
/// <summary>
/// Benchmark cache hit performance.
/// Target: > 80% hit rate, < 0.01ms per hit
/// </summary>
[Benchmark(Description = "Cache hit lookup")]
public int BenchmarkCacheHits()
{
var hits = 0;
for (int i = 0; i < LookupCount; i++)
{
var key = _testKeys[i % 800]; // Always hit
if (_mockCache.ContainsKey(key))
{
hits++;
}
}
return hits;
}
/// <summary>
/// Benchmark cache miss handling.
/// Target: < 1ms per miss for key generation
/// </summary>
[Benchmark(Description = "Cache miss handling")]
public int BenchmarkCacheMisses()
{
var misses = 0;
for (int i = 0; i < LookupCount; i++)
{
var key = _testKeys[800 + (i % 200)]; // Always miss
if (!_mockCache.ContainsKey(key))
{
misses++;
}
}
return misses;
}
/// <summary>
/// Benchmark mixed workload (realistic scenario).
/// Target: > 80% hit rate overall
/// </summary>
[Benchmark(Description = "Mixed cache workload")]
public (int hits, int misses) BenchmarkMixedWorkload()
{
var hits = 0;
var misses = 0;
var random = new Random(42); // Deterministic seed
for (int i = 0; i < LookupCount; i++)
{
var key = _testKeys[random.Next(_testKeys.Length)];
if (_mockCache.ContainsKey(key))
{
hits++;
}
else
{
misses++;
}
}
return (hits, misses);
}
/// <summary>
/// Benchmark cache key generation.
/// </summary>
[Benchmark(Description = "Cache key generation")]
public string BenchmarkCacheKeyGeneration()
{
var tenant = "tenant1";
var buildId = "8d8f09a0d7e2c1b3a5f4e6d8c0b2a4e6f8d0c2b4";
return $"binary:{tenant}:{buildId}";
}
}

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src/__Tests/__Benchmarks/binary-lookup/Program.cs Normal file
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// -----------------------------------------------------------------------------
// Program.cs
// Sprint: SPRINT_20251226_014_BINIDX
// Task: SCANINT-20 - Performance benchmarks for binary lookup
// -----------------------------------------------------------------------------
using BenchmarkDotNet.Running;
namespace StellaOps.Bench.BinaryLookup;
/// <summary>
/// Entry point for binary lookup benchmark suite.
/// </summary>
public class Program
{
public static void Main(string[] args)
{
var summary = BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
}
}

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src/__Tests/__Benchmarks/binary-lookup/StellaOps.Bench.BinaryLookup.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net10.0</TargetFramework>
<LangVersion>preview</LangVersion>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
<PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.14.0" Condition="'$(OS)' == 'Windows_NT'" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\BinaryIndex\__Libraries\StellaOps.BinaryIndex.Core\StellaOps.BinaryIndex.Core.csproj" />
<ProjectReference Include="..\..\..\BinaryIndex\__Libraries\StellaOps.BinaryIndex.Fingerprints\StellaOps.BinaryIndex.Fingerprints.csproj" />
</ItemGroup>
</Project>