# Validation Report: Story 3.11 Context XML

**Document:** docs-bmad/sprint-artifacts/stories/3-11-vhost-validation-middleware.context.xml  
**Checklist:** .bmad/bmm/workflows/4-implementation/story-context/checklist.md  
**Date:** 2026-02-12-09-55-54  
**Validator:** Bob (Scrum Master Agent)

## Summary

- **Overall:** 7/10 passed (70%)
- **Critical Issues:** 3

## Section Results

### ✓ Story Fields (asA/iWant/soThat) Captured
**Status:** PASS

**Evidence:** Lines 13-15 in context.xml clearly capture all three story fields:
```xml
<asA>developer</asA>
<iWant>all topology operations to validate vhost existence before execution</iWant>
<soThat>operations fail fast with clear errors instead of obscure HTTP 404 responses</soThat>
```
Matches story draft exactly (lines 7-9 in story .md).

---

### ✓ Acceptance Criteria List Matches Story Draft Exactly
**Status:** PASS

**Evidence:** Lines 43-50 in context.xml list all 6 acceptance criteria. Cross-referencing with story draft lines 13-18 shows exact match with no invention or omission.

---

### ✓ Tasks/Subtasks Captured as Task List
**Status:** PASS

**Evidence:** Lines 16-40 in context.xml capture all 4 tasks with detailed subtasks matching lines 22-55 in story draft. Task structure is comprehensive and mirrors the draft accurately.

---

### ✗ Relevant Docs (5-15) Included with Path and Snippets
**Status:** FAIL - CRITICAL

**Evidence:** Lines 53-72 show only **3 documentation artifacts**:
1. tech-spec-epic-3.md
2. epic-3-topology-operations.md  
3. data-architecture.md

**Impact:** The checklist requires 5-15 docs. Context is missing critical documentation that should inform implementation:

**Missing Documents:**
- PRD functional requirements (docs-bmad/prd/functional-requirements.md)
- PRD non-functional requirements (docs-bmad/prd/non-functional-requirements.md)
- Security architecture (docs-bmad/architecture/security-architecture.md) - relevant for caching sensitive vhost data
- Architecture Decision Records (docs-bmad/architecture/architecture-decision-records-adrs.md) - may have patterns for caching
- Deployment architecture (docs-bmad/architecture/deployment-architecture.md) - TTL configuration in production

**Recommendation:** Add 5-7 more relevant documentation artifacts with specific section references and snippets related to:
- Performance requirements (NFRs)
- Caching patterns and strategies
- Error handling standards
- Security considerations for middleware
- Testing requirements

---

### ✗ Relevant Code References Included with Reason and Line Hints
**Status:** FAIL - CRITICAL

**Evidence:** Lines 74-109 list 5 code artifacts but **ALL lack specific line hints**:
- topology.py: says "All classes" (line 78) - not specific enough
- http_client.py: says "All" (line 85) - too broad
- exceptions.py: says "All" (line 92) - generic
- errors.py: says "All" (line 99) - vague
- topology.py schemas: says "All" (line 106) - not targeted

**Impact:** Developer cannot efficiently locate relevant code. Line hints are critical for quick navigation in large files.

**Recommendation:** Add specific line ranges for each artifact:
- topology.py operations: specify line ranges for each operation class
- http_client.py: specify HTTPClientManager class definition and key methods (likely lines 78-300)
- exceptions.py: VHostNotFoundError already exists at line 37-38
- schemas: specify individual schema class line ranges

---

### ⚠ Interfaces/API Contracts Extracted if Applicable
**Status:** PARTIAL

**Evidence:** Lines 136-164 define 4 interfaces which is good coverage. However:

**Gaps:**
1. VhostNotFoundError interface (lines 159-164) specifies **two possible paths** without clarity:
   - `src/rabbitmq_mcp_connection/connection/exceptions.py or src/utils/errors.py`
   
   **Reality Check:** VHostNotFoundError **already exists** in exceptions.py at line 37-38, but context doesn't acknowledge this!

2. Missing interface for cache invalidation mechanism mentioned in Task 1 (line 27) and AC #6 (line 49).

**Recommendation:**
- Update VhostNotFoundError interface to show it already exists in connection/exceptions.py
- Add cache invalidation interface specification
- Add TTL configuration interface (default 300s, configurable?)

---

### ✓ Constraints Include Applicable Dev Rules and Patterns
**Status:** PASS

**Evidence:** Lines 123-134 list 10 detailed constraints covering performance, thread safety, caching strategy, error handling, and testing requirements. Well-aligned with story needs.

---

### ✓ Dependencies Detected from Manifests and Frameworks
**Status:** PASS

**Evidence:** Lines 110-120 list 8 Python packages (5 runtime, 3 dev) with versions and reasons. All dependencies are appropriate for the implementation (httpx, pydantic, structlog, pytest ecosystem, testcontainers).

---

### ✗ Testing Standards and Locations Populated
**Status:** FAIL

**Evidence:** Lines 167-198 provide testing information, but with significant gaps:

**What's Good:**
- Test locations specified (lines 172-174)
- 7 test ideas provided with AC mapping (lines 176-198)
- Standards mention pytest patterns and 80% coverage

**What's Missing:**
1. **No mention of existing test patterns** - Are there similar middleware tests to follow?
2. **No test data fixtures** - What test vhosts should be used? Standard fixture patterns?
3. **Integration test container setup** - Specific RabbitMQ version? Configuration needs?
4. **Performance benchmark baseline** - What's acceptable for p50, p95, p99?
5. **Mocking patterns** - How are HTTPClientManager calls typically mocked in this codebase?

**Impact:** Developer lacks concrete examples of test structure and patterns used in this project.

**Recommendation:** 
- Reference existing test files as patterns (e.g., tests for http_client.py)
- Specify test fixture requirements
- Add integration test setup details
- Define performance metrics beyond just <50ms requirement

---

### ✓ XML Structure Follows Story-Context Template Format
**Status:** PASS

**Evidence:** The XML structure matches the expected template with all required sections: metadata (lines 2-10), story (lines 12-41), acceptanceCriteria (lines 43-50), artifacts (lines 52-121), constraints (lines 123-134), interfaces (lines 136-164), tests (lines 167-198). Proper nesting and syntax.

---

## Failed Items Summary

### 1. ✗ Insufficient Documentation Coverage (5-15 Required, Only 3 Provided)
**Criticality:** HIGH  
**Missing:** PRD requirements, security architecture, ADRs, deployment docs  
**Impact:** Developer lacks full context on requirements, patterns, and constraints

### 2. ✗ Missing Specific Code Line Hints
**Criticality:** HIGH  
**Missing:** All code artifacts say "All" instead of line ranges  
**Impact:** Developer wastes time navigating large files without guidance

### 3. ✗ Incomplete Testing Standards
**Criticality:** MEDIUM  
**Missing:** Test patterns, fixtures, integration setup details, mocking patterns  
**Impact:** Tests may not follow project conventions

---

## Partial Items Summary

### 1. ⚠ Interface Specifications Have Inaccuracies
**Issue:** VhostNotFoundError marked as needing creation but already exists  
**Missing:** Cache invalidation interface, TTL configuration interface  
**Impact:** Developer might duplicate existing code or miss integration points

---

## Recommendations

### Must Fix (Critical)
1. **Add 5-7 more documentation artifacts** from PRD, architecture, and other relevant sources
2. **Add specific line ranges** for all code artifacts (inspect actual files and provide accurate line numbers)
3. **Correct VhostNotFoundError interface** to acknowledge it already exists at exceptions.py:37-38

### Should Improve (Important)
4. **Expand testing standards** with references to existing test patterns and fixtures
5. **Add cache invalidation interface** specification
6. **Specify integration test environment** details (RabbitMQ version, test container config)

### Consider (Nice to Have)
7. Add middleware directory __init__.py creation as explicit artifact since it may not exist
8. Add example vhost validation error message format in interfaces
9. Reference specific ADR if one exists for caching patterns

---

## Validation Checklist Status

| Item | Status | Notes |
|------|--------|-------|
| Story fields captured | ✓ PASS | Complete |
| Acceptance criteria match | ✓ PASS | Exact match |
| Tasks captured | ✓ PASS | Comprehensive |
| Docs 5-15 with snippets | ✗ FAIL | Only 3 provided |
| Code refs with line hints | ✗ FAIL | No specific lines |
| Interfaces extracted | ⚠ PARTIAL | Inaccurate + incomplete |
| Constraints present | ✓ PASS | Well defined |
| Dependencies detected | ✓ PASS | Complete |
| Testing standards | ✗ FAIL | Missing patterns |
| XML structure valid | ✓ PASS | Correct format |

---

**Overall Assessment:** Story context needs significant enhancement before it's truly "ready-for-dev". The foundational structure is solid, but critical gaps in documentation references, code line hints, and testing guidance will slow developer velocity.
