5100* tests strengthtenen work

This commit is contained in:
StellaOps Bot
2025-12-24 12:38:34 +02:00
parent 9a08d10b89
commit 02772c7a27
117 changed files with 29941 additions and 66 deletions

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// SPDX-License-Identifier: AGPL-3.0-or-later
// SPDX-FileCopyrightText: 2025 StellaOps Contributors
namespace StellaOps.Parity.Tests.Storage;
/// <summary>
/// Detects drift in parity metrics when StellaOps falls behind competitors.
/// Triggers alerts when drift exceeds configured thresholds for a sustained period.
/// </summary>
public sealed class ParityDriftDetector
{
private readonly ParityResultStore _store;
private readonly DriftThresholds _thresholds;
private readonly int _requiredTrendDays;
public ParityDriftDetector(
ParityResultStore store,
DriftThresholds? thresholds = null,
int requiredTrendDays = 3)
{
_store = store ?? throw new ArgumentNullException(nameof(store));
_thresholds = thresholds ?? DriftThresholds.Default;
_requiredTrendDays = requiredTrendDays;
}
/// <summary>
/// Analyzes recent results and returns any drift alerts.
/// </summary>
public async Task<DriftAnalysisResult> AnalyzeAsync(CancellationToken ct = default)
{
// Load last N days of results
var startTime = DateTime.UtcNow.AddDays(-_requiredTrendDays - 1);
var results = await _store.LoadResultsAsync(startTime: startTime, ct: ct);
if (results.Count == 0)
{
return new DriftAnalysisResult
{
AnalyzedAt = DateTime.UtcNow,
ResultCount = 0,
Alerts = [],
Summary = "No parity results available for analysis."
};
}
var alerts = new List<DriftAlert>();
// Analyze SBOM completeness drift
var sbomCompleteness = results
.Select(r => (r.Timestamp, r.SbomMetrics.PackageCompletenessRatio))
.ToList();
var sbomDrift = CalculateDrift(sbomCompleteness);
if (sbomDrift.HasDrift && sbomDrift.DriftAmount > _thresholds.SbomCompletenessThreshold)
{
alerts.Add(new DriftAlert
{
MetricName = "SBOM Package Completeness",
DriftType = DriftType.Declining,
BaselineValue = sbomDrift.BaselineValue,
CurrentValue = sbomDrift.CurrentValue,
DriftPercent = sbomDrift.DriftAmount * 100,
ThresholdPercent = _thresholds.SbomCompletenessThreshold * 100,
TrendDays = _requiredTrendDays,
Severity = GetAlertSeverity(sbomDrift.DriftAmount, _thresholds.SbomCompletenessThreshold),
Recommendation = "Review SBOM extraction logic; compare against Syft package detection."
});
}
// Analyze vulnerability recall drift
var vulnRecall = results
.Select(r => (r.Timestamp, r.VulnMetrics.Recall))
.ToList();
var recallDrift = CalculateDrift(vulnRecall);
if (recallDrift.HasDrift && recallDrift.DriftAmount > _thresholds.VulnRecallThreshold)
{
alerts.Add(new DriftAlert
{
MetricName = "Vulnerability Recall",
DriftType = DriftType.Declining,
BaselineValue = recallDrift.BaselineValue,
CurrentValue = recallDrift.CurrentValue,
DriftPercent = recallDrift.DriftAmount * 100,
ThresholdPercent = _thresholds.VulnRecallThreshold * 100,
TrendDays = _requiredTrendDays,
Severity = GetAlertSeverity(recallDrift.DriftAmount, _thresholds.VulnRecallThreshold),
Recommendation = "Check feed freshness; verify matcher logic for new CVE patterns."
});
}
// Analyze latency drift (StellaOps vs Grype P95)
var latencyRatio = results
.Select(r => (r.Timestamp, r.LatencyMetrics.StellaOpsVsGrypeRatio))
.ToList();
var latencyDrift = CalculateInverseDrift(latencyRatio); // Higher is worse for latency
if (latencyDrift.HasDrift && latencyDrift.DriftAmount > _thresholds.LatencyRatioThreshold)
{
alerts.Add(new DriftAlert
{
MetricName = "Latency vs Grype (P95)",
DriftType = DriftType.Increasing,
BaselineValue = latencyDrift.BaselineValue,
CurrentValue = latencyDrift.CurrentValue,
DriftPercent = latencyDrift.DriftAmount * 100,
ThresholdPercent = _thresholds.LatencyRatioThreshold * 100,
TrendDays = _requiredTrendDays,
Severity = GetAlertSeverity(latencyDrift.DriftAmount, _thresholds.LatencyRatioThreshold),
Recommendation = "Profile scanner hot paths; check for new allocations or I/O bottlenecks."
});
}
// Analyze PURL completeness drift
var purlCompleteness = results
.Select(r => (r.Timestamp, r.SbomMetrics.PurlCompletenessRatio))
.ToList();
var purlDrift = CalculateDrift(purlCompleteness);
if (purlDrift.HasDrift && purlDrift.DriftAmount > _thresholds.PurlCompletenessThreshold)
{
alerts.Add(new DriftAlert
{
MetricName = "PURL Completeness",
DriftType = DriftType.Declining,
BaselineValue = purlDrift.BaselineValue,
CurrentValue = purlDrift.CurrentValue,
DriftPercent = purlDrift.DriftAmount * 100,
ThresholdPercent = _thresholds.PurlCompletenessThreshold * 100,
TrendDays = _requiredTrendDays,
Severity = GetAlertSeverity(purlDrift.DriftAmount, _thresholds.PurlCompletenessThreshold),
Recommendation = "Verify PURL generation for all package types; check ecosystem-specific extractors."
});
}
// Analyze F1 score drift
var f1Score = results
.Select(r => (r.Timestamp, r.VulnMetrics.F1Score))
.ToList();
var f1Drift = CalculateDrift(f1Score);
if (f1Drift.HasDrift && f1Drift.DriftAmount > _thresholds.F1ScoreThreshold)
{
alerts.Add(new DriftAlert
{
MetricName = "Vulnerability F1 Score",
DriftType = DriftType.Declining,
BaselineValue = f1Drift.BaselineValue,
CurrentValue = f1Drift.CurrentValue,
DriftPercent = f1Drift.DriftAmount * 100,
ThresholdPercent = _thresholds.F1ScoreThreshold * 100,
TrendDays = _requiredTrendDays,
Severity = GetAlertSeverity(f1Drift.DriftAmount, _thresholds.F1ScoreThreshold),
Recommendation = "Balance precision/recall; check for false positive patterns."
});
}
var summary = alerts.Count switch
{
0 => $"No drift detected across {results.Count} results over {_requiredTrendDays}+ days.",
1 => $"1 drift alert detected. Investigate {alerts[0].MetricName}.",
_ => $"{alerts.Count} drift alerts detected. Review SBOM and vulnerability parity."
};
return new DriftAnalysisResult
{
AnalyzedAt = DateTime.UtcNow,
ResultCount = results.Count,
Alerts = alerts,
Summary = summary
};
}
private static DriftCalculation CalculateDrift(IReadOnlyList<(DateTime Timestamp, double Value)> series)
{
if (series.Count < 2)
{
return new DriftCalculation { HasDrift = false };
}
// Split into first half (baseline) and second half (current)
var midpoint = series.Count / 2;
var baseline = series.Take(midpoint).Select(x => x.Value).ToList();
var current = series.Skip(midpoint).Select(x => x.Value).ToList();
var baselineAvg = baseline.Average();
var currentAvg = current.Average();
// Drift is relative decline: (baseline - current) / baseline
if (baselineAvg <= 0)
{
return new DriftCalculation { HasDrift = false };
}
var drift = (baselineAvg - currentAvg) / baselineAvg;
return new DriftCalculation
{
HasDrift = drift > 0, // Only flag declining metrics
BaselineValue = baselineAvg,
CurrentValue = currentAvg,
DriftAmount = Math.Max(0, drift)
};
}
private static DriftCalculation CalculateInverseDrift(IReadOnlyList<(DateTime Timestamp, double Value)> series)
{
if (series.Count < 2)
{
return new DriftCalculation { HasDrift = false };
}
// Split into first half (baseline) and second half (current)
var midpoint = series.Count / 2;
var baseline = series.Take(midpoint).Select(x => x.Value).ToList();
var current = series.Skip(midpoint).Select(x => x.Value).ToList();
var baselineAvg = baseline.Average();
var currentAvg = current.Average();
// Drift is relative increase: (current - baseline) / baseline
if (baselineAvg <= 0)
{
return new DriftCalculation { HasDrift = false };
}
var drift = (currentAvg - baselineAvg) / baselineAvg;
return new DriftCalculation
{
HasDrift = drift > 0, // Only flag increasing metrics (bad for latency)
BaselineValue = baselineAvg,
CurrentValue = currentAvg,
DriftAmount = Math.Max(0, drift)
};
}
private static AlertSeverity GetAlertSeverity(double drift, double threshold)
{
var ratio = drift / threshold;
return ratio switch
{
>= 3.0 => AlertSeverity.Critical,
>= 2.0 => AlertSeverity.High,
>= 1.5 => AlertSeverity.Medium,
_ => AlertSeverity.Low
};
}
private sealed record DriftCalculation
{
public bool HasDrift { get; init; }
public double BaselineValue { get; init; }
public double CurrentValue { get; init; }
public double DriftAmount { get; init; }
}
}
/// <summary>
/// Thresholds for triggering drift alerts.
/// Values are relative (e.g., 0.05 = 5% drift).
/// </summary>
public sealed record DriftThresholds
{
/// <summary>
/// Default thresholds: 5% drift on key metrics.
/// </summary>
public static DriftThresholds Default => new()
{
SbomCompletenessThreshold = 0.05,
PurlCompletenessThreshold = 0.05,
VulnRecallThreshold = 0.05,
F1ScoreThreshold = 0.05,
LatencyRatioThreshold = 0.10 // 10% for latency
};
/// <summary>
/// SBOM package completeness drift threshold (default: 5%).
/// </summary>
public double SbomCompletenessThreshold { get; init; }
/// <summary>
/// PURL completeness drift threshold (default: 5%).
/// </summary>
public double PurlCompletenessThreshold { get; init; }
/// <summary>
/// Vulnerability recall drift threshold (default: 5%).
/// </summary>
public double VulnRecallThreshold { get; init; }
/// <summary>
/// Vulnerability F1 score drift threshold (default: 5%).
/// </summary>
public double F1ScoreThreshold { get; init; }
/// <summary>
/// Latency ratio drift threshold (default: 10%).
/// </summary>
public double LatencyRatioThreshold { get; init; }
}
public sealed record DriftAnalysisResult
{
public required DateTime AnalyzedAt { get; init; }
public required int ResultCount { get; init; }
public required IReadOnlyList<DriftAlert> Alerts { get; init; }
public required string Summary { get; init; }
public bool HasAlerts => Alerts.Count > 0;
public bool HasCriticalAlerts => Alerts.Any(a => a.Severity == AlertSeverity.Critical);
}
public sealed record DriftAlert
{
public required string MetricName { get; init; }
public required DriftType DriftType { get; init; }
public required double BaselineValue { get; init; }
public required double CurrentValue { get; init; }
public required double DriftPercent { get; init; }
public required double ThresholdPercent { get; init; }
public required int TrendDays { get; init; }
public required AlertSeverity Severity { get; init; }
public required string Recommendation { get; init; }
}
public enum DriftType
{
Declining,
Increasing
}
public enum AlertSeverity
{
Low,
Medium,
High,
Critical
}

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// SPDX-License-Identifier: AGPL-3.0-or-later
// SPDX-FileCopyrightText: 2025 StellaOps Contributors
using System.Text.Json;
using System.Text.Json.Serialization;
namespace StellaOps.Parity.Tests.Storage;
/// <summary>
/// Time-series storage for parity test results.
/// Emits results as JSON artifacts for historical tracking and trend analysis.
/// </summary>
public sealed class ParityResultStore
{
private readonly string _storagePath;
private readonly JsonSerializerOptions _jsonOptions;
public ParityResultStore(string storagePath)
{
_storagePath = storagePath ?? throw new ArgumentNullException(nameof(storagePath));
_jsonOptions = new JsonSerializerOptions
{
WriteIndented = true,
PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
Converters = { new JsonStringEnumConverter() }
};
}
/// <summary>
/// Stores a parity run result with timestamp-based filename.
/// </summary>
public async Task StoreResultAsync(ParityRunSummary summary, CancellationToken ct = default)
{
ArgumentNullException.ThrowIfNull(summary);
Directory.CreateDirectory(_storagePath);
var filename = $"parity-{summary.RunId}-{summary.Timestamp:yyyyMMddTHHmmssZ}.json";
var filePath = Path.Combine(_storagePath, filename);
var json = JsonSerializer.Serialize(summary, _jsonOptions);
await File.WriteAllTextAsync(filePath, json, ct);
}
/// <summary>
/// Loads all parity results within the specified time range.
/// </summary>
public async Task<IReadOnlyList<ParityRunSummary>> LoadResultsAsync(
DateTime? startTime = null,
DateTime? endTime = null,
CancellationToken ct = default)
{
if (!Directory.Exists(_storagePath))
{
return [];
}
var results = new List<ParityRunSummary>();
var files = Directory.GetFiles(_storagePath, "parity-*.json");
foreach (var file in files)
{
try
{
var json = await File.ReadAllTextAsync(file, ct);
var summary = JsonSerializer.Deserialize<ParityRunSummary>(json, _jsonOptions);
if (summary is null)
continue;
// Filter by time range
if (startTime.HasValue && summary.Timestamp < startTime.Value)
continue;
if (endTime.HasValue && summary.Timestamp > endTime.Value)
continue;
results.Add(summary);
}
catch (JsonException)
{
// Skip malformed files
}
}
return results
.OrderBy(r => r.Timestamp)
.ToList();
}
/// <summary>
/// Loads the latest N results.
/// </summary>
public async Task<IReadOnlyList<ParityRunSummary>> LoadLatestResultsAsync(
int count,
CancellationToken ct = default)
{
var allResults = await LoadResultsAsync(ct: ct);
return allResults
.OrderByDescending(r => r.Timestamp)
.Take(count)
.OrderBy(r => r.Timestamp)
.ToList();
}
/// <summary>
/// Prunes results older than the specified retention period.
/// </summary>
public async Task<int> PruneOldResultsAsync(TimeSpan retention, CancellationToken ct = default)
{
var cutoff = DateTime.UtcNow - retention;
var results = await LoadResultsAsync(endTime: cutoff, ct: ct);
var pruned = 0;
foreach (var result in results)
{
var filename = $"parity-{result.RunId}-{result.Timestamp:yyyyMMddTHHmmssZ}.json";
var filePath = Path.Combine(_storagePath, filename);
if (File.Exists(filePath))
{
File.Delete(filePath);
pruned++;
}
}
return pruned;
}
/// <summary>
/// Exports results to Prometheus-compatible metrics format (text).
/// </summary>
public string ExportPrometheusMetrics(ParityRunSummary summary)
{
ArgumentNullException.ThrowIfNull(summary);
var lines = new List<string>
{
"# HELP stellaops_parity_sbom_completeness_ratio SBOM package completeness ratio vs competitors.",
"# TYPE stellaops_parity_sbom_completeness_ratio gauge",
$"stellaops_parity_sbom_completeness_ratio{{run_id=\"{summary.RunId}\"}} {summary.SbomMetrics.PackageCompletenessRatio:F4}",
"",
"# HELP stellaops_parity_sbom_match_count Number of matched packages across scanners.",
"# TYPE stellaops_parity_sbom_match_count gauge",
$"stellaops_parity_sbom_match_count{{run_id=\"{summary.RunId}\"}} {summary.SbomMetrics.MatchedPackageCount}",
"",
"# HELP stellaops_parity_vuln_recall Vulnerability detection recall vs competitors.",
"# TYPE stellaops_parity_vuln_recall gauge",
$"stellaops_parity_vuln_recall{{run_id=\"{summary.RunId}\"}} {summary.VulnMetrics.Recall:F4}",
"",
"# HELP stellaops_parity_vuln_precision Vulnerability detection precision vs competitors.",
"# TYPE stellaops_parity_vuln_precision gauge",
$"stellaops_parity_vuln_precision{{run_id=\"{summary.RunId}\"}} {summary.VulnMetrics.Precision:F4}",
"",
"# HELP stellaops_parity_vuln_f1 Vulnerability detection F1 score.",
"# TYPE stellaops_parity_vuln_f1 gauge",
$"stellaops_parity_vuln_f1{{run_id=\"{summary.RunId}\"}} {summary.VulnMetrics.F1Score:F4}",
"",
"# HELP stellaops_parity_latency_p50_ms Scan latency P50 in milliseconds.",
"# TYPE stellaops_parity_latency_p50_ms gauge",
$"stellaops_parity_latency_p50_ms{{scanner=\"stellaops\",run_id=\"{summary.RunId}\"}} {summary.LatencyMetrics.StellaOpsP50Ms:F2}",
$"stellaops_parity_latency_p50_ms{{scanner=\"grype\",run_id=\"{summary.RunId}\"}} {summary.LatencyMetrics.GrypeP50Ms:F2}",
$"stellaops_parity_latency_p50_ms{{scanner=\"trivy\",run_id=\"{summary.RunId}\"}} {summary.LatencyMetrics.TrivyP50Ms:F2}",
"",
"# HELP stellaops_parity_latency_p95_ms Scan latency P95 in milliseconds.",
"# TYPE stellaops_parity_latency_p95_ms gauge",
$"stellaops_parity_latency_p95_ms{{scanner=\"stellaops\",run_id=\"{summary.RunId}\"}} {summary.LatencyMetrics.StellaOpsP95Ms:F2}",
$"stellaops_parity_latency_p95_ms{{scanner=\"grype\",run_id=\"{summary.RunId}\"}} {summary.LatencyMetrics.GrypeP95Ms:F2}",
$"stellaops_parity_latency_p95_ms{{scanner=\"trivy\",run_id=\"{summary.RunId}\"}} {summary.LatencyMetrics.TrivyP95Ms:F2}",
"",
"# HELP stellaops_parity_error_scenarios_passed Number of error scenarios passed.",
"# TYPE stellaops_parity_error_scenarios_passed gauge",
$"stellaops_parity_error_scenarios_passed{{run_id=\"{summary.RunId}\"}} {summary.ErrorMetrics.ScenariosPassed}",
"",
"# HELP stellaops_parity_error_scenarios_total Total number of error scenarios.",
"# TYPE stellaops_parity_error_scenarios_total gauge",
$"stellaops_parity_error_scenarios_total{{run_id=\"{summary.RunId}\"}} {summary.ErrorMetrics.ScenariosTotal}"
};
return string.Join("\n", lines);
}
/// <summary>
/// Exports results to InfluxDB line protocol format.
/// </summary>
public string ExportInfluxLineProtocol(ParityRunSummary summary)
{
ArgumentNullException.ThrowIfNull(summary);
var timestamp = new DateTimeOffset(summary.Timestamp).ToUnixTimeMilliseconds() * 1_000_000; // nanoseconds
var lines = new List<string>
{
$"parity_sbom,run_id={summary.RunId} completeness_ratio={summary.SbomMetrics.PackageCompletenessRatio:F4},matched_count={summary.SbomMetrics.MatchedPackageCount}i {timestamp}",
$"parity_vuln,run_id={summary.RunId} recall={summary.VulnMetrics.Recall:F4},precision={summary.VulnMetrics.Precision:F4},f1={summary.VulnMetrics.F1Score:F4} {timestamp}",
$"parity_latency,run_id={summary.RunId},scanner=stellaops p50={summary.LatencyMetrics.StellaOpsP50Ms:F2},p95={summary.LatencyMetrics.StellaOpsP95Ms:F2},p99={summary.LatencyMetrics.StellaOpsP99Ms:F2} {timestamp}",
$"parity_latency,run_id={summary.RunId},scanner=grype p50={summary.LatencyMetrics.GrypeP50Ms:F2},p95={summary.LatencyMetrics.GrypeP95Ms:F2},p99={summary.LatencyMetrics.GrypeP99Ms:F2} {timestamp}",
$"parity_latency,run_id={summary.RunId},scanner=trivy p50={summary.LatencyMetrics.TrivyP50Ms:F2},p95={summary.LatencyMetrics.TrivyP95Ms:F2},p99={summary.LatencyMetrics.TrivyP99Ms:F2} {timestamp}",
$"parity_errors,run_id={summary.RunId} passed={summary.ErrorMetrics.ScenariosPassed}i,total={summary.ErrorMetrics.ScenariosTotal}i {timestamp}"
};
return string.Join("\n", lines);
}
}
/// <summary>
/// Summary of a single parity test run.
/// </summary>
public sealed record ParityRunSummary
{
public required string RunId { get; init; }
public required DateTime Timestamp { get; init; }
public required string StellaOpsVersion { get; init; }
public required CompetitorVersions CompetitorVersions { get; init; }
public required SbomParityMetrics SbomMetrics { get; init; }
public required VulnParityMetrics VulnMetrics { get; init; }
public required LatencyParityMetrics LatencyMetrics { get; init; }
public required ErrorParityMetrics ErrorMetrics { get; init; }
public required IReadOnlyList<string> FixturesUsed { get; init; }
public string? Notes { get; init; }
}
public sealed record CompetitorVersions
{
public required string SyftVersion { get; init; }
public required string GrypeVersion { get; init; }
public required string TrivyVersion { get; init; }
}
public sealed record SbomParityMetrics
{
public required int StellaOpsPackageCount { get; init; }
public required int SyftPackageCount { get; init; }
public required int MatchedPackageCount { get; init; }
public required double PackageCompletenessRatio { get; init; }
public required double PurlCompletenessRatio { get; init; }
public required double LicenseDetectionRatio { get; init; }
public required double CpeDetectionRatio { get; init; }
}
public sealed record VulnParityMetrics
{
public required int StellaOpsCveCount { get; init; }
public required int GrypeCveCount { get; init; }
public required int TrivyCveCount { get; init; }
public required int UnionCveCount { get; init; }
public required int IntersectionCveCount { get; init; }
public required double Recall { get; init; }
public required double Precision { get; init; }
public required double F1Score { get; init; }
public required SeverityBreakdown StellaOpsSeverity { get; init; }
public required SeverityBreakdown GrypeSeverity { get; init; }
public required SeverityBreakdown TrivySeverity { get; init; }
}
public sealed record SeverityBreakdown
{
public int Critical { get; init; }
public int High { get; init; }
public int Medium { get; init; }
public int Low { get; init; }
public int Unknown { get; init; }
}
public sealed record LatencyParityMetrics
{
public required double StellaOpsP50Ms { get; init; }
public required double StellaOpsP95Ms { get; init; }
public required double StellaOpsP99Ms { get; init; }
public required double GrypeP50Ms { get; init; }
public required double GrypeP95Ms { get; init; }
public required double GrypeP99Ms { get; init; }
public required double TrivyP50Ms { get; init; }
public required double TrivyP95Ms { get; init; }
public required double TrivyP99Ms { get; init; }
public required double StellaOpsVsGrypeRatio { get; init; }
public required double StellaOpsVsTrivyRatio { get; init; }
}
public sealed record ErrorParityMetrics
{
public required int ScenariosPassed { get; init; }
public required int ScenariosTotal { get; init; }
public required IReadOnlyList<ErrorScenarioResult> ScenarioResults { get; init; }
}
public sealed record ErrorScenarioResult
{
public required string ScenarioName { get; init; }
public required bool StellaOpsPassed { get; init; }
public required bool GrypePassed { get; init; }
public required bool TrivyPassed { get; init; }
public required bool MatchesExpected { get; init; }
public string? Notes { get; init; }
}