From 548d94a7f05947df62a9ba700ed4e41bcd6b0148 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Wed, 21 Jan 2026 17:37:35 +0000
Subject: [PATCH] Add artifact.1/src/artifact_1/core.py

---
 artifact.1/src/artifact_1/core.py | 108 ++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 artifact.1/src/artifact_1/core.py

diff --git a/artifact.1/src/artifact_1/core.py b/artifact.1/src/artifact_1/core.py
new file mode 100644
index 0000000..e9fa5ec
--- /dev/null
+++ b/artifact.1/src/artifact_1/core.py
@@ -0,0 +1,108 @@
+from __future__ import annotations
+
+import logging
+from dataclasses import dataclass, asdict
+from typing import Any, Dict, List
+
+import pandas as pd
+from scipy import stats
+
+__all__ = [
+    "RunData",
+    "MetricsSummary",
+    "calculate_metrics",
+    "run_mann_whitney_test",
+]
+
+
+# Setup logging for CI-ready consistency
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+
+@dataclass
+class RunData:
+    timestamp: str
+    pinned_flag: bool
+    runtime: float
+    seqcount_retry_count: int
+    mischfenster_dauer: float
+
+    def validate(self) -> None:
+        assert isinstance(self.timestamp, str), "timestamp muss ein String sein"
+        assert isinstance(self.pinned_flag, bool), "pinned_flag muss bool sein"
+        assert isinstance(self.runtime, (float, int)), "runtime muss float/int sein"
+        assert isinstance(self.seqcount_retry_count, int), "seqcount_retry_count muss int sein"
+        assert isinstance(self.mischfenster_dauer, (float, int)), "mischfenster_dauer muss float/int sein"
+
+
+@dataclass
+class MetricsSummary:
+    retry_free_rate: float
+    mischfenster_stats: Dict[str, float]
+    correlations: Dict[str, float]
+
+    def as_dict(self) -> Dict[str, Any]:
+        return asdict(self)
+
+
+def calculate_metrics(run_data: RunData) -> MetricsSummary:
+    """Berechnet aggregierte Metriken und statistische Kennzahlen aus RunData."""
+
+    if not isinstance(run_data, RunData):
+        raise TypeError("run_data muss vom Typ RunData sein")
+
+    run_data.validate()
+
+    df = pd.DataFrame([{k: getattr(run_data, k) for k in run_data.__dataclass_fields__}])
+
+    # Retry-free-rate (Anteil runs ohne seqcount-Retry)
+    retry_free_rate = float((df['seqcount_retry_count'] == 0).mean())
+
+    # Mischfenster-Statistiken
+    mischfenster_stats = {
+        'p50': float(df['mischfenster_dauer'].quantile(0.5)),
+        'p95': float(df['mischfenster_dauer'].quantile(0.95)),
+        'max': float(df['mischfenster_dauer'].max()),
+    }
+
+    # Korrelationen zwischen Mischfenster und Retries
+    if df['seqcount_retry_count'].std() == 0 or df['mischfenster_dauer'].std() == 0:
+        corr_val = 0.0
+    else:
+        corr_val = float(df['mischfenster_dauer'].corr(df['seqcount_retry_count']))
+
+    correlations = {'mischfenster_vs_retry_count': corr_val}
+
+    summary = MetricsSummary(
+        retry_free_rate=retry_free_rate,
+        mischfenster_stats=mischfenster_stats,
+        correlations=correlations,
+    )
+
+    logger.info("MetricsSummary berechnet: %s", summary.as_dict())
+
+    return summary
+
+
+def run_mann_whitney_test(data1: List[float], data2: List[float]) -> float:
+    """Führt Mann-Whitney-U-Test durch, um Signifikanz zwischen zwei Gruppen zu prüfen."""
+    
+    if not (isinstance(data1, list) and isinstance(data2, list)):
+        raise TypeError("data1 und data2 müssen Listen von float sein")
+    
+    if not data1 or not data2:
+        raise ValueError("Beide Datengruppen müssen Werte enthalten")
+
+    if not all(isinstance(x, (int, float)) for x in data1 + data2):
+        raise TypeError("Alle Elemente in data1 und data2 müssen numerisch sein")
+
+    try:
+        _, p_value = stats.mannwhitneyu(data1, data2, alternative='two-sided')
+    except Exception as e:
+        logger.exception("Fehler beim Mann-Whitney-U-Test: %s", e)
+        raise
+
+    logger.info("Mann-Whitney-U-Test p-Wert: %.5f", p_value)
+
+    return float(p_value)