RAG Implementation File Summary

New Files Created

Core Implementation

• include/RAG_Tool_Handler.h - RAG tool handler header
• lib/RAG_Tool_Handler.cpp - RAG tool handler implementation

Test Files

• test/test_rag_schema.cpp - Test to verify RAG database schema
• test/build_rag_test.sh - Simple build script for RAG test
• test/Makefile - Updated to include RAG test compilation

Documentation

• doc/rag-documentation.md - Comprehensive RAG documentation
• doc/rag-examples.md - Examples of using RAG tools
• RAG_IMPLEMENTATION_SUMMARY.md - Summary of RAG implementation

Scripts

• scripts/mcp/test_rag.sh - Test script for RAG functionality

Files Modified

Core Integration

• include/MCP_Thread.h - Added RAG tool handler member
• lib/MCP_Thread.cpp - Added RAG tool handler initialization and cleanup
• lib/ProxySQL_MCP_Server.cpp - Registered RAG endpoint
• lib/AI_Features_Manager.cpp - Added RAG database schema creation

Configuration

• include/GenAI_Thread.h - Added RAG configuration variables
• lib/GenAI_Thread.cpp - Added RAG configuration variable initialization

Documentation

• scripts/mcp/README.md - Updated to include RAG in architecture and tools list

Key Features Implemented

1. MCP Integration: RAG tools available via /mcp/rag endpoint
2. Database Schema: Complete RAG table structure with FTS and vector support
3. Search Tools: FTS, vector, and hybrid search with RRF scoring
4. Fetch Tools: Get chunks and documents with configurable return parameters
5. Admin Tools: Statistics and monitoring capabilities
6. Security: Input validation, limits, and timeouts
7. Configuration: Runtime-configurable RAG parameters
8. Testing: Comprehensive test scripts and documentation

MCP Tools Provided

• rag.search_fts - Keyword search using FTS5
• rag.search_vector - Semantic search using vector embeddings
• rag.search_hybrid - Hybrid search (fuse and fts_then_vec modes)
• rag.get_chunks - Fetch chunk content
• rag.get_docs - Fetch document content
• rag.fetch_from_source - Refetch authoritative data
• rag.admin.stats - Operational statistics

Configuration Variables

• genai.rag_enabled - Enable RAG features
• genai.rag_k_max - Maximum search results
• genai.rag_candidates_max - Maximum candidates for hybrid search
• genai.rag_query_max_bytes - Maximum query length
• genai.rag_response_max_bytes - Maximum response size
• genai.rag_timeout_ms - Operation timeout