# V2 Pipeline Testing Epic - Planning Complete

**Date:** 2025-12-01
**Epic:** V2 Pipeline Comprehensive Testing
**Status:** Stories Ready for Development

---

## Summary

Successfully completed planning phase for comprehensive V2 pipeline testing and enhancement. Created tech-spec, epic breakdown, and 3 detailed user stories ready for implementation.

---

## Deliverables Created

### 1. Technical Specification
**File:** `docs/feats/wrapup_pipeline_v2/tech-spec.md`

**Key Sections:**
- Problem statement: 37/58 files tracked (missing .xlsm pattern)
- Solution: 4-part approach (discovery, testing, error handling, metrics)
- Implementation details with code snippets
- Acceptance criteria: 58/58 files, ≥95% success rate

### 2. Epic Document
**File:** `docs/feats/wrapup_pipeline_v2/epics.md`

**Epic Goal:** Achieve 95%+ extraction success rate across all 58 Excel files

**Story Breakdown:**
- Story 1: Fix File Discovery & .xlsm Support (3 points)
- Story 2: Create Comprehensive Test Suite (5 points)
- Story 3: Enhance Error Handling & Reporting (5 points)

**Total Story Points:** 13

### 3. User Stories

#### Story 1: Fix File Discovery & .xlsm Support
**File:** `sprint_artifacts/story-v2-pipeline-testing-1.md`
**Story Points:** 3
**Priority:** High

**Focus:**
- Update batch_extract_v2.py line 222 to include .xlsm pattern
- Add file validation pre-checks
- Verify all 58 files discovered (22 xlsx, 15 xls, 21 xlsm)

**Key Implementation:**
```python
# Change line 222 from:
for pattern in ["**/*.xlsx", "**/*.xls"]:
    excel_files.extend(self.folder_path.glob(pattern))

# To:
for pattern in ["**/*.xlsx", "**/*.xls", "**/*.xlsm"]:
    excel_files.extend(self.folder_path.glob(pattern))
```

**Acceptance Criteria:**
- ✅ All 58 files discovered
- ✅ File validation function implemented
- ✅ Invalid files skipped gracefully
- ✅ Verification script passes

#### Story 2: Create Comprehensive Test Suite
**File:** `sprint_artifacts/story-v2-pipeline-testing-2.md`
**Story Points:** 5
**Priority:** High

**Focus:**
- Create test_comprehensive_validation.py with parametrized tests
- Implement MetricsTracker for success/fallback/failure tracking
- Generate validation_report.json automatically
- Validate ≥95% success rate

**Key Components:**
- Parametrized pytest for all 58 files
- V2 extraction with V1 fallback
- Session-scoped metrics tracking
- Success rate assertion

**Acceptance Criteria:**
- ✅ Test suite processes all 58 files
- ✅ Parametrized test with clear IDs
- ✅ Success rate validation (≥95%)
- ✅ Metrics tracking comprehensive
- ✅ Report saved to JSON

#### Story 3: Enhance Error Handling & Reporting
**File:** `sprint_artifacts/story-v2-pipeline-testing-3.md`
**Story Points:** 5
**Priority:** High

**Focus:**
- Implement 14 error categories (transient, file, pipeline, system)
- Add retry logic with exponential backoff
- Enhance status JSON with metrics
- Generate markdown validation report

**Key Features:**
- ErrorCategory enum with categorize_error() function
- Retry up to 3 times for transient errors (timeout, rate limit, network)
- Enhanced status JSON schema with summary/metrics
- ValidationReport class generates markdown reports

**Acceptance Criteria:**
- ✅ Error categorization implemented
- ✅ Retry logic operational (3 attempts, exponential backoff)
- ✅ Enhanced status JSON schema
- ✅ Validation report generated
- ✅ Documentation updated

---

## Implementation Sequence

```
Story 1 (File Discovery)
   ↓
Story 2 (Automated Tests) ← Can start in parallel with Story 3
   ↓
Story 3 (Error Handling & Reports)
   ↓
Validation: Run full test suite, verify 95% success rate
```

**Dependencies:**
- Story 2 depends on Story 1 (needs all 58 files discovered)
- Story 3 can run in parallel with Story 2
- Final validation requires all 3 stories complete

---

## Key Metrics to Track

**File Discovery:**
- Total files: 58
- By format: 22 .xlsx, 15 .xls, 21 .xlsm
- Currently tracked: 37/58 (64%)
- Target: 58/58 (100%)

**Extraction Success:**
- Current: 27/37 completed (73% of tracked files)
- Target: ≥95% overall success rate (V2 + V1 fallback)
- V2 success rate: Track separately
- V1 fallback rate: Track separately

**Error Categories:**
- Transient: timeout, rate_limit, network, service_unavailable
- File: corrupted, too_large, unsupported, password_protected
- Pipeline: conversion_failed, parsing_failed, llm_error
- System: out_of_memory, disk_full

---

## Technical Stack

**Runtime:**
- Python 3.11+
- FastAPI 0.122
- pytest 8.0+ with pytest-asyncio 0.23+

**Document Processing:**
- openpyxl 3.1.5 (.xlsx)
- xlrd 2.0.2+ (.xls)
- docling 2.63.0+ (Excel → HTML conversion)
- LibreOffice 7.0+ (.xlsm conversion)

**AI/ML:**
- Azure OpenAI GPT-4o (LLM header detection)

**Data Layer:**
- PostgreSQL 18 (SQLAlchemy 2.0+)
- Milvus 2.4+ (vector indexing)

**Testing:**
- pytest with parametrized tests
- structlog for logging
- JSON status tracking

---

## Files Modified/Created

### Modified Files
1. **batch_extract_v2.py**
   - Line 222: Add .xlsm to glob patterns
   - Add error categorization
   - Add retry logic
   - Enhance status JSON schema
   - Generate validation reports

2. **README.md**
   - Add troubleshooting guide
   - Document .xlsm support
   - Explain error categories

### New Files Created
3. **tests/test_extraction_v2/test_comprehensive_validation.py**
   - Parametrized tests for all 58 files
   - MetricsTracker class
   - Success rate validation

4. **tests/test_extraction_v2/conftest.py** (enhance)
   - customer_document_files fixture
   - Mock Azure OpenAI fixture
   - metrics_tracker fixture

5. **docs/feats/wrapup_pipeline_v2/VALIDATION_REPORT.md** (generated)
   - Auto-generated validation report
   - Failed files analysis
   - Recommendations

---

## Next Steps

### Immediate Actions
1. **Start Story 1**: Fix file discovery (.xlsm pattern)
   - Quick win, unblocks Story 2
   - Estimated time: 1-2 hours

2. **Implement Story 2 & 3 in parallel**:
   - Story 2: Automated test suite
   - Story 3: Error handling and reporting
   - Estimated time: 1-2 days total

3. **Run comprehensive validation**:
   - Execute test suite on all 58 files
   - Generate validation report
   - Verify ≥95% success rate

### Success Criteria Checklist
- [ ] 58/58 files discovered and tracked
- [ ] ≥95% extraction success rate (V2 + V1 fallback)
- [ ] Automated test suite passing
- [ ] Validation report generated
- [ ] Documentation complete
- [ ] All code committed and reviewed

---

## Known Risks & Mitigation

**Risk 1: Success rate below 95%**
- Mitigation: V1 fallback mechanism
- Mitigation: Retry logic for transient errors
- Acceptance: Document known limitations for failed files

**Risk 2: .xlsm conversion issues**
- Mitigation: LibreOffice dependency for macro files
- Mitigation: V1 fallback handles .xls format
- Testing: Validate all 21 .xlsm files specifically

**Risk 3: Azure OpenAI rate limits**
- Mitigation: Retry logic with exponential backoff
- Mitigation: Mock LLM calls in tests
- Monitoring: Track rate_limit error category

---

## Testing Strategy Summary

**Unit Tests:**
- File validation logic
- Error categorization
- Retry logic
- Metrics tracking

**Integration Tests:**
- Parametrized tests for all 58 files
- V2 → V1 fallback flow
- Status JSON updates
- Report generation

**Validation:**
- Success rate ≥95%
- All 58 files processed
- Error categories accurate
- Reports informative

---

## Documentation Updates

**README.md:**
- Testing section with batch processing examples
- Troubleshooting guide for common errors
- .xlsm support notes

**Tech-Spec:**
- Complete implementation details
- Code snippets and examples
- Acceptance criteria

**VALIDATION_REPORT.md:**
- Auto-generated after batch processing
- Failed files analysis
- Known limitations
- Recommendations

---

## Conclusion

Planning phase complete. All artifacts ready for implementation:
- ✅ Tech-spec created
- ✅ Epic defined
- ✅ 3 user stories documented
- ✅ Implementation details specified
- ✅ Testing strategy defined
- ✅ Acceptance criteria clear

**Ready to begin Story 1 implementation.**

---

**Planning Completed:** 2025-12-01
**Total Story Points:** 13
**Estimated Duration:** 2-3 days
**Target Success Rate:** ≥95%
