ggen 4.0.0

ggen is a deterministic, language-agnostic code generation framework that treats software artifacts as projections of knowledge graphs.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
#!/usr/bin/env python3
"""
MSA Gage R&R Analysis Script
Calculates repeatability, reproducibility, and Gage R&R percentages
Process Capability Analysis (Cp/Cpk)

DfLSS Measure Phase: Measurement Systems Analysis
Feature 004: Test Quality Audit and Performance Optimization
"""

import pandas as pd
import numpy as np
from pathlib import Path
import sys
import json
from typing import Dict, List, Tuple

# Specification limits (from Makefile.toml SLOs)
SPEC_LIMITS = {
    'unit::version_resolution': {'LSL': 0, 'USL': 1000, 'Target': 500},
    'unit::registry_client': {'LSL': 0, 'USL': 1000, 'Target': 500},
    'integration::end_to_end_flow': {'LSL': 0, 'USL': 10000, 'Target': 5000},
    'security::signature_verification': {'LSL': 0, 'USL': 1000, 'Target': 500},
    'security::dos_resistance': {'LSL': 0, 'USL': 1000, 'Target': 500},
    'chicago_tdd_smoke_test': {'LSL': 0, 'USL': 1000, 'Target': 500},
    'aci::mod': {'LSL': 0, 'USL': 5000, 'Target': 2500},
    'aci::skill_invocation_tests': {'LSL': 0, 'USL': 5000, 'Target': 2500},
    'aci::timeout_enforcement_tests': {'LSL': 0, 'USL': 5000, 'Target': 2500},
    'aci::tool_selection_tests': {'LSL': 0, 'USL': 5000, 'Target': 2500},
}


def calculate_gage_rr(df: pd.DataFrame) -> pd.DataFrame:
    """
    Calculate Gage R&R from MSA data

    Returns DataFrame with:
    - EV (Equipment Variation - Repeatability)
    - AV (Appraiser Variation - Reproducibility)
    - PV (Part Variation)
    - Total Variation
    - Gage R&R percentage
    - Acceptance criteria
    """
    results = []

    for part in df['Part'].unique():
        part_data = df[df['Part'] == part]

        # Skip if insufficient data
        if len(part_data) < 9:  # Need at least 3 operators × 3 trials
            print(f"⚠️  Skipping {part}: Insufficient data ({len(part_data)} measurements)")
            continue

        # 1. REPEATABILITY (Equipment Variation - EV)
        # Within-operator variation (how consistent is the same operator?)
        ev_variances = []
        for operator in part_data['Operator'].unique():
            op_data = part_data[part_data['Operator'] == operator]['Duration_ms']
            if len(op_data) > 1:
                ev_variances.append(op_data.var())

        if not ev_variances:
            continue

        ev_variance = np.mean(ev_variances)
        ev_std = np.sqrt(ev_variance)

        # 2. REPRODUCIBILITY (Appraiser Variation - AV)
        # Between-operator variation (how different are operators from each other?)
        operator_means = part_data.groupby('Operator')['Duration_ms'].mean()

        if len(operator_means) > 1:
            av_variance = operator_means.var()
            # Adjust for repeatability within operators
            n_trials = part_data.groupby('Operator').size().mean()
            av_variance = max(0, av_variance - ev_variance / n_trials)
        else:
            av_variance = 0

        av_std = np.sqrt(av_variance)

        # 3. PART VARIATION (PV)
        # Total variation in the measurements
        pv_variance = part_data['Duration_ms'].var()
        # Adjust for measurement system variation
        pv_variance = max(0, pv_variance - ev_variance - av_variance)
        pv_std = np.sqrt(pv_variance)

        # 4. TOTAL VARIATION
        total_variance = ev_variance + av_variance + pv_variance
        total_std = np.sqrt(total_variance)

        # 5. GAGE R&R
        gage_rr_variance = ev_variance + av_variance
        gage_rr_std = np.sqrt(gage_rr_variance)

        # Gage R&R as percentage of total variation
        if total_std > 0:
            gage_rr_percent = (gage_rr_std / total_std) * 100
        else:
            gage_rr_percent = 0

        # 6. ACCEPTANCE CRITERIA
        if gage_rr_percent < 10:
            acceptance = "✅ ACCEPTABLE"
            recommendation = "Measurement system is excellent"
        elif gage_rr_percent < 30:
            acceptance = "⚠️ MARGINAL"
            recommendation = "Acceptable for some applications, improvements recommended"
        else:
            acceptance = "🔴 UNACCEPTABLE"
            recommendation = "Cannot make reliable decisions - MUST IMPROVE measurement system"

        # 7. CONTRIBUTION BREAKDOWN
        if total_variance > 0:
            ev_percent = (ev_variance / total_variance) * 100
            av_percent = (av_variance / total_variance) * 100
            pv_percent = (pv_variance / total_variance) * 100
        else:
            ev_percent = av_percent = pv_percent = 0

        results.append({
            'Part': part,
            'Measurements': len(part_data),
            'EV_std_ms': round(ev_std, 2),
            'EV_percent': round(ev_percent, 1),
            'AV_std_ms': round(av_std, 2),
            'AV_percent': round(av_percent, 1),
            'PV_std_ms': round(pv_std, 2),
            'PV_percent': round(pv_percent, 1),
            'Total_std_ms': round(total_std, 2),
            'GageRR_percent': round(gage_rr_percent, 1),
            'Acceptance': acceptance,
            'Recommendation': recommendation
        })

    return pd.DataFrame(results)


def calculate_process_capability(df: pd.DataFrame, spec_limits: Dict) -> pd.DataFrame:
    """
    Calculate Cp and Cpk for each test category

    Cp = (USL - LSL) / (6 × σ)  [Potential capability]
    Cpk = min((USL - μ)/(3σ), (μ - LSL)/(3σ))  [Actual capability]

    Interpretation:
    - Cp, Cpk > 1.33: Capable (6σ quality, 3.4 DPMO)
    - Cp, Cpk = 1.0-1.33: Marginally capable (3σ quality, 2700 DPMO)
    - Cp, Cpk < 1.0: Not capable
    """
    results = []

    for part, limits in spec_limits.items():
        part_data = df[df['Part'] == part]['Duration_ms']

        if len(part_data) == 0:
            continue

        # Calculate statistics
        mean = part_data.mean()
        std = part_data.std()

        USL = limits['USL']
        LSL = limits['LSL']
        Target = limits.get('Target', (USL + LSL) / 2)

        if std == 0:
            print(f"⚠️  {part}: Zero standard deviation, skipping capability analysis")
            continue

        # 1. Cp (Potential Capability)
        # Assumes process is centered
        cp = (USL - LSL) / (6 * std)

        # 2. Cpk (Actual Capability)
        # Accounts for process centering
        cpu = (USL - mean) / (3 * std)  # Upper capability
        cpl = (mean - LSL) / (3 * std)  # Lower capability
        cpk = min(cpu, cpl)

        # 3. Cpm (Capability relative to target)
        # Penalizes off-target performance
        tau = np.sqrt(std**2 + (mean - Target)**2)
        cpm = (USL - LSL) / (6 * tau) if tau > 0 else 0

        # 4. Process Performance (long-term)
        # Uses overall standard deviation
        pp = cp  # Same as Cp for this dataset
        ppk = cpk  # Same as Cpk for this dataset

        # 5. Interpretation
        if cp > 1.33 and cpk > 1.33:
            capability = "✅ CAPABLE (6σ)"
            sigma_level = 6
        elif cp > 1.0 and cpk > 1.0:
            capability = "⚠️ MARGINAL (3σ)"
            sigma_level = 3
        else:
            capability = "🔴 NOT CAPABLE"
            sigma_level = 0

        # 6. Centering
        if abs(cp - cpk) < 0.1:
            centering = "Centered"
        elif cpu < cpl:
            centering = "Off-center (high)"
        else:
            centering = "Off-center (low)"

        # 7. DPMO (Defects Per Million Opportunities)
        # Approximate from Cpk
        if cpk >= 2.0:
            dpmo = 0.002  #        elif cpk >= 1.33:
            dpmo = 3.4  #        elif cpk >= 1.0:
            dpmo = 2700  #        else:
            dpmo = 66800  # <3σ

        results.append({
            'Part': part,
            'Mean_ms': round(mean, 2),
            'Std_ms': round(std, 2),
            'LSL': LSL,
            'USL': USL,
            'Target': Target,
            'Cp': round(cp, 2),
            'Cpk': round(cpk, 2),
            'Cpm': round(cpm, 2),
            'Sigma_Level': sigma_level,
            'DPMO': dpmo,
            'Centering': centering,
            'Capability': capability
        })

    return pd.DataFrame(results)


def generate_summary_report(
    gage_rr_df: pd.DataFrame,
    capability_df: pd.DataFrame,
    output_file: Path
) -> None:
    """Generate JSON summary report for dashboards"""

    summary = {
        'timestamp': pd.Timestamp.now().isoformat(),
        'msa_summary': {
            'total_parts': len(gage_rr_df),
            'acceptable': len(gage_rr_df[gage_rr_df['Acceptance'].str.contains('ACCEPTABLE')]),
            'marginal': len(gage_rr_df[gage_rr_df['Acceptance'].str.contains('MARGINAL')]),
            'unacceptable': len(gage_rr_df[gage_rr_df['Acceptance'].str.contains('UNACCEPTABLE')]),
            'average_gage_rr': round(gage_rr_df['GageRR_percent'].mean(), 1),
            'parts': gage_rr_df.to_dict('records')
        },
        'capability_summary': {
            'total_parts': len(capability_df),
            'capable_6sigma': len(capability_df[capability_df['Capability'].str.contains('CAPABLE')]),
            'marginal_3sigma': len(capability_df[capability_df['Capability'].str.contains('MARGINAL')]),
            'not_capable': len(capability_df[capability_df['Capability'].str.contains('NOT CAPABLE')]),
            'average_cp': round(capability_df['Cp'].mean(), 2),
            'average_cpk': round(capability_df['Cpk'].mean(), 2),
            'parts': capability_df.to_dict('records')
        }
    }

    with open(output_file, 'w') as f:
        json.dump(summary, f, indent=2)

    print(f"\n✅ Summary report saved to: {output_file}")


def main():
    if len(sys.argv) < 2:
        print("Usage: python3 msa_analysis.py <data_file.csv>")
        print("Example: python3 scripts/msa_analysis.py specs/004-optimize-test-concurrency/dflss/msa_data/msa_raw_data_*.csv")
        sys.exit(1)

    data_file = Path(sys.argv[1])

    if not data_file.exists():
        print(f"❌ Error: Data file not found: {data_file}")
        sys.exit(1)

    # Load data
    print(f"📊 Loading MSA data from: {data_file}")
    df = pd.read_csv(data_file)

    # Filter out non-PASS measurements for capability analysis
    df_passed = df[df['Status'] == 'PASS'].copy()

    print(f"   Total measurements: {len(df)}")
    print(f"   Passed measurements: {len(df_passed)}")
    print(f"   Failed/Timeout: {len(df) - len(df_passed)}")

    if len(df_passed) < 9:
        print("❌ Error: Insufficient PASS measurements for MSA analysis")
        print("   Need at least 3 operators × 3 trials = 9 measurements")
        sys.exit(1)

    # ========================================================================
    # GAGE R&R ANALYSIS
    # ========================================================================

    print("\n" + "=" * 80)
    print("GAGE R&R ANALYSIS (Measurement Systems Analysis)")
    print("=" * 80)
    print("\nAcceptance Criteria:")
    print("  ✅ Gage R&R < 10%: ACCEPTABLE (excellent measurement system)")
    print("  ⚠️  Gage R&R 10-30%: MARGINAL (acceptable for some applications)")
    print("  🔴 Gage R&R > 30%: UNACCEPTABLE (cannot make reliable decisions)")
    print("\n" + "-" * 80)

    gage_rr_results = calculate_gage_rr(df_passed)

    if len(gage_rr_results) == 0:
        print("❌ No valid Gage R&R results calculated")
        sys.exit(1)

    # Display results
    pd.set_option('display.max_columns', None)
    pd.set_option('display.width', 120)
    print(gage_rr_results.to_string(index=False))

    # ========================================================================
    # PROCESS CAPABILITY ANALYSIS
    # ========================================================================

    print("\n" + "=" * 80)
    print("PROCESS CAPABILITY ANALYSIS (Cp/Cpk)")
    print("=" * 80)
    print("\nCapability Criteria:")
    print("  ✅ Cp, Cpk ≥ 1.33: CAPABLE (6σ quality, 3.4 DPMO)")
    print("  ⚠️  Cp, Cpk 1.0-1.33: MARGINAL (3σ quality, 2700 DPMO)")
    print("  🔴 Cp, Cpk < 1.0: NOT CAPABLE (>66800 DPMO)")
    print("\n" + "-" * 80)

    capability_results = calculate_process_capability(df_passed, SPEC_LIMITS)

    if len(capability_results) == 0:
        print("❌ No valid capability results calculated")
        sys.exit(1)

    print(capability_results.to_string(index=False))

    # ========================================================================
    # SUMMARY STATISTICS
    # ========================================================================

    print("\n" + "=" * 80)
    print("SUMMARY STATISTICS")
    print("=" * 80)

    acceptable_msa = len(gage_rr_results[gage_rr_results['Acceptance'].str.contains('ACCEPTABLE')])
    marginal_msa = len(gage_rr_results[gage_rr_results['Acceptance'].str.contains('MARGINAL')])
    unacceptable_msa = len(gage_rr_results[gage_rr_results['Acceptance'].str.contains('UNACCEPTABLE')])

    print(f"\nMeasurement System Analysis:")
    print(f"  ✅ Acceptable: {acceptable_msa}/{len(gage_rr_results)} ({acceptable_msa/len(gage_rr_results)*100:.1f}%)")
    print(f"  ⚠️  Marginal: {marginal_msa}/{len(gage_rr_results)} ({marginal_msa/len(gage_rr_results)*100:.1f}%)")
    print(f"  🔴 Unacceptable: {unacceptable_msa}/{len(gage_rr_results)} ({unacceptable_msa/len(gage_rr_results)*100:.1f}%)")
    print(f"  📊 Average Gage R&R: {gage_rr_results['GageRR_percent'].mean():.1f}%")

    capable_6sigma = len(capability_results[capability_results['Capability'].str.contains('CAPABLE')])
    marginal_3sigma = len(capability_results[capability_results['Capability'].str.contains('MARGINAL')])
    not_capable = len(capability_results[capability_results['Capability'].str.contains('NOT CAPABLE')])

    print(f"\nProcess Capability:")
    print(f"  ✅ Capable (6σ): {capable_6sigma}/{len(capability_results)} ({capable_6sigma/len(capability_results)*100:.1f}%)")
    print(f"  ⚠️  Marginal (3σ): {marginal_3sigma}/{len(capability_results)} ({marginal_3sigma/len(capability_results)*100:.1f}%)")
    print(f"  🔴 Not Capable: {not_capable}/{len(capability_results)} ({not_capable/len(capability_results)*100:.1f}%)")
    print(f"  📊 Average Cp: {capability_results['Cp'].mean():.2f}")
    print(f"  📊 Average Cpk: {capability_results['Cpk'].mean():.2f}")

    # ========================================================================
    # IMPROVEMENT RECOMMENDATIONS
    # ========================================================================

    print("\n" + "=" * 80)
    print("IMPROVEMENT RECOMMENDATIONS")
    print("=" * 80)

    if unacceptable_msa > 0:
        print("\n🔴 CRITICAL: Unacceptable Measurement Systems Detected")
        print("   Cannot make reliable decisions with Gage R&R > 30%")
        print("\n   Recommended Actions:")
        print("   1. Stabilize repeatability (use fixed seeds, mock external deps)")
        print("   2. Stabilize reproducibility (Docker/testcontainers, pre-warm cache)")
        print("   3. Use single-threaded execution (--test-threads=1)")
        print("   4. Add timeouts to prevent hangs")
        print("   5. Consider widening specification limits (if justified)")

    if not_capable > 0:
        print("\n🔴 CRITICAL: Process Not Capable")
        print("   Process cannot consistently meet specification limits")
        print("\n   Recommended Actions:")
        print("   1. Reduce variation (optimize test code, faster infrastructure)")
        print("   2. Center process (identify and fix slow tests)")
        print("   3. Parallelize independent tests")
        print("   4. Reassess specification limits (verify business needs)")

    if acceptable_msa == len(gage_rr_results) and capable_6sigma == len(capability_results):
        print("\n✅ EXCELLENT: All measurement systems acceptable and processes capable!")
        print("   Ready to proceed with test optimization and performance improvements")

    # ========================================================================
    # SAVE SUMMARY REPORT
    # ========================================================================

    summary_file = data_file.parent / "msa_summary_report.json"
    generate_summary_report(gage_rr_results, capability_results, summary_file)

    print("\n" + "=" * 80)
    print("ANALYSIS COMPLETE")
    print("=" * 80)
    print(f"\nData file: {data_file}")
    print(f"Summary report: {summary_file}")
    print("\nNext steps:")
    print("  1. Review Gage R&R results (focus on UNACCEPTABLE items)")
    print("  2. Review capability results (focus on NOT CAPABLE items)")
    print("  3. Implement improvement recommendations")
    print("  4. Re-run MSA after improvements to verify effectiveness")


if __name__ == "__main__":
    main()