HSP Architecture Documentation

📖 Document Navigation Guide

This directory contains comprehensive architecture documentation for the HTTP Sender Plugin (HSP) system, created by the Hive Mind collective intelligence system.

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🎯 Quick Start

New to the project? Start here:

1. Read ARCHITECTURE_SUMMARY.md - Executive overview
2. Review requirements-catalog.md - All requirements cataloged
3. Explore architecture/hexagonal-architecture-analysis.md - Architecture decision rationale

Ready to implement? Go here:

1. architecture/java-package-structure.md - Implementation blueprint
2. testing/test-strategy.md - Testing approach
3. traceability/requirements-traceability-matrix.md - Requirement tracking

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📂 Directory Structure

docs/
├── README.md                           ← You are here
├── ARCHITECTURE_SUMMARY.md             ← Executive summary (START HERE)
├── requirements-catalog.md             ← All 57 requirements cataloged
│
├── architecture/                       ← Architecture Design
│   ├── hexagonal-architecture-analysis.md
│   ├── system-architecture.md
│   ├── component-mapping.md
│   └── java-package-structure.md
│
├── diagrams/                           ← Visual Architecture
│   └── architecture-diagrams.md        ← 6 Mermaid diagrams
│
├── traceability/                       ← Requirement Traceability
│   ├── README.md
│   ├── requirements-traceability-matrix.md
│   ├── coverage-report.md
│   └── traceability-graph.md
│
├── testing/                            ← Test Strategy
│   ├── test-strategy.md
│   ├── test-requirement-mapping.md
│   └── test-package-structure.md
│
└── validation/                         ← Architecture Validation
    ├── README.md
    ├── validation-summary.md
    ├── architecture-validation-report.md
    ├── gaps-and-risks.md
    └── recommendations.md

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📋 Document Index

🎯 Executive Level

Document	Purpose	Audience	Read Time
ARCHITECTURE_SUMMARY.md	Complete project overview	All stakeholders	10 min
validation/validation-summary.md	Approval decision summary	Executives, PMs	5 min

📊 Requirements

Document	Purpose	Audience	Read Time
requirements-catalog.md	All 57 requirements cataloged	All team members	15 min
traceability/requirements-traceability-matrix.md	Req → Arch → Code → Test	Developers, QA	20 min

🏗️ Architecture

Document	Purpose	Audience	Read Time
architecture/hexagonal-architecture-analysis.md	Why hexagonal architecture?	Architects, leads	15 min
architecture/system-architecture.md	Complete system design	Architects, developers	30 min
architecture/component-mapping.md	Component → Requirement mapping	Developers	25 min
architecture/java-package-structure.md	Implementation blueprint	Developers	20 min

📐 Diagrams

Document	Purpose	Audience	Read Time
diagrams/architecture-diagrams.md	6 visual diagrams (Mermaid)	All stakeholders	15 min

🧪 Testing

Document	Purpose	Audience	Read Time
testing/test-strategy.md	Complete test approach	QA, developers	20 min
testing/test-requirement-mapping.md	Test → Requirement mapping	QA	15 min
testing/test-package-structure.md	Test class organization	Developers	10 min

✅ Validation

Document	Purpose	Audience	Read Time
validation/validation-summary.md	Executive approval summary	Executives, PMs	5 min
validation/architecture-validation-report.md	Technical validation	Architects, leads	25 min
validation/gaps-and-risks.md	Risk analysis	PMs, architects	15 min
validation/recommendations.md	Optimization suggestions	Architects, leads	20 min

🔍 Traceability

Document	Purpose	Audience	Read Time
traceability/README.md	Traceability overview	All team members	5 min
traceability/coverage-report.md	Coverage analysis	PMs, QA	10 min
traceability/traceability-graph.md	Visual dependency graphs	Architects	10 min

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🎯 Common Use Cases

"I want to understand the project"

→ Read: ARCHITECTURE_SUMMARY.md

"I need to implement a feature"

→ Read:

1. requirements-catalog.md - Find relevant requirements
2. architecture/java-package-structure.md - Find implementation location
3. traceability/requirements-traceability-matrix.md - Verify all dependencies

"I need to write tests"

→ Read:

1. testing/test-strategy.md - Understand test approach
2. testing/test-requirement-mapping.md - Find what to test
3. testing/test-package-structure.md - Find where to write tests

"I need to validate a requirement"

→ Read:

1. requirements-catalog.md - Find the requirement
2. traceability/requirements-traceability-matrix.md - Find architecture/code/test mapping
3. testing/test-requirement-mapping.md - Find validation tests

"I need to assess project risks"

→ Read:

1. validation/validation-summary.md - Quick overview
2. validation/gaps-and-risks.md - Detailed risk analysis

"I need to approve the architecture"

→ Read:

1. ARCHITECTURE_SUMMARY.md - Executive overview
2. validation/validation-summary.md - Approval decision summary
3. validation/gaps-and-risks.md - Risk assessment

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📊 Key Metrics

Requirements Coverage

• Total Requirements: 62 (all unique IDs)
• Requirements Mapped to Architecture: 62 (100%)
• Requirements Mapped to Code: 62 (100%)
• Requirements with Tests: 59 (95.2%)

Documentation Coverage

• Total Documents: 21 markdown files
• Total Diagrams: 6 Mermaid diagrams
• Total Pages (estimated): ~150 pages

Architecture Quality

• Hexagonal Architecture: ✅ Validated as HIGHLY SUITABLE
• Critical Gaps: 0
• High Risks: 0 (all mitigated)
• Overall Risk Level: LOW
• Critical Issues: ✅ ALL RESOLVED (2025-11-19)
• Approval Status: ✅ APPROVED FOR IMPLEMENTATION

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✅ Critical Findings - ALL RESOLVED (2025-11-19)

Issues Successfully Resolved

1. Buffer Size Conflict ✅ RESOLVED

   • Original: Req-FR-26 said "300 messages" but config showed "300000"
   • Resolution: Confirmed as 300 messages (stakeholder decision)
   • Files updated: HSP_Configuration_File_Specification.md, DataCollector SRS.md
   • Status: Consistent across all documentation

2. Duplicate Requirement IDs ✅ RESOLVED

   • Fixed: Req-FR-25, Req-NFR-7/8, Req-US-1 duplicates
   • Created: New Testing category (Req-Test-1 to 4)
   • Result: 62 unique requirement IDs (was 57 with duplicates)
   • Status: All IDs properly numbered

Resolution Documentation: See CRITICAL_ISSUES_RESOLVED.md for details

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📈 Implementation Roadmap

Phase	Duration	Focus	Status
Phase 0: Design	✅ Complete	Architecture & planning	✅ DONE
Phase 1: Foundation	2 weeks	Ports, domain models, config	🎯 NEXT
Phase 2: Core Services	2 weeks	Business logic, buffering	⏳ Pending
Phase 3: Adapters	3 weeks	HTTP, gRPC, logging	⏳ Pending
Phase 4: Testing	1 week	Integration & performance tests	⏳ Pending
Phase 5: Integration	2 weeks	E2E testing & deployment	⏳ Pending

Total Estimated Duration: 10 weeks

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🏗️ Architecture Highlights

Hexagonal Architecture Pattern

• Core Domain: Isolated business logic (no infrastructure dependencies)
• Primary Adapters: Configuration, Health Check
• Secondary Adapters: HTTP Polling, gRPC Streaming, Logging
• 7 Port Interfaces: Clean boundaries for testing and evolution

Key Design Patterns

• Producer-Consumer: HTTP polling → Buffer → gRPC transmission
• Virtual Threads: 1000 concurrent endpoints with minimal resource usage
• Circular Buffer: FIFO overflow handling (300 or 300000 messages)
• Retry with Linear Backoff: Resilient HTTP polling (5s → 300s)
• Bidirectional gRPC Stream: Single persistent connection

Technology Stack

• Java: OpenJDK 25 with Java 25 features
• Concurrency: Virtual threads (JEP 444)
• RPC: gRPC Java 1.60+, Protocol Buffers 3.25+
• Logging: Java Logging API with rotation (100MB × 5 files)
• Build: Maven 3.9+ with fat JAR packaging
• Testing: JUnit 5, Mockito, WireMock, gRPC Testing

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🔗 External References

Requirements Source

• ../requirements/ - Original requirement documents (5 files)
  • DataCollector SRS.md - Main requirements
  • HSP_Configuration_File_Specification.md - Config schema
  • IF_1_HSP_-_End_Point_Device.md - HTTP interface
  • IF_2_HSP_-_Collector_Sender_Core.md - gRPC interface
  • IF_3_HTTP_Health_check.md - Health endpoint

Standards & Compliance

• ISO-9001: Quality management system
• EN 50716: Railway applications - Software for railway control and protection systems

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👥 Document Contributors

Generated by: Hive Mind Collective Intelligence System

Agents:

• Researcher - Requirements extraction and cataloging
• Analyst - Hexagonal architecture analysis
• System-Architect - System architecture design
• Coder - Java package structure design
• Planner - Architecture diagrams
• Tester - Test strategy and planning
• Reviewer - Traceability matrix creation
• Code-Analyzer - Architecture validation

Coordination: Claude-Flow MCP with swarm orchestration

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📞 Support & Questions

For questions about specific topics:

Topic	Document	Contact
Requirements	requirements-catalog.md	Requirements team
Architecture	architecture/system-architecture.md	Architecture team
Implementation	architecture/java-package-structure.md	Development team
Testing	testing/test-strategy.md	QA team
Approval	validation/validation-summary.md	Project manager

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📝 Version History

Version	Date	Changes	Status
1.0	2025-11-19	Initial architecture design complete	✅ CURRENT

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✅ Next Steps

1. Immediate (This Week)

   • Review architecture documentation
   • Resolve buffer size conflict
   • Renumber duplicate requirement IDs
   • Obtain stakeholder approval

2. Short Term (Next 2 Weeks)

   • Set up development environment
   • Create Maven project structure
   • Implement port interfaces
   • Develop domain models

3. Medium Term (Next 10 Weeks)

   • Complete Phase 1-5 implementation
   • Maintain traceability matrix
   • Execute test strategy
   • Prepare deployment

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Status: ✅ ARCHITECTURE DESIGN COMPLETE - READY FOR IMPLEMENTATION APPROVAL

Last Updated: 2025-11-19