5 Commits (db5f1ea498f736d4ff733bbd41ec649d073cf932)

Author	SHA1	Message	Date
Rene Cannao	33a100c1db	Use relative path mcp_catalog.db in MCP test instead of absolute /var/lib/proxysql path	3 months ago
Rene Cannao	5a85ef04f6	Fix MCP variables persistence and add DISK command support ... This commit fixes several issues with MCP (Model Context Protocol) variables not being properly persisted across storage layers and adds support for DISK commands. Changes: 1. lib/Admin_FlushVariables.cpp: - Fixed flush_mcp_variables___runtime_to_database() to properly insert variables into runtime_global_variables using db->execute() with formatted strings (matching admin pattern) - Fixed SQL format string to avoid double-prefix bug (qualified_name already contains "mcp-" prefix) - Fixed lock ordering by releasing outer wrlock before calling runtime_to_database with use_lock=true, then re-acquiring - Removed explicit BEGIN/COMMIT transactions to match admin pattern 2. lib/Admin_Handler.cpp: - Added MCP DISK command handlers that rewrite commands to SQL queries: * LOAD MCP VARIABLES FROM DISK -> INSERT OR REPLACE INTO main.global_variables * SAVE MCP VARIABLES TO DISK -> INSERT OR REPLACE INTO disk.global_variables * SAVE MCP VARIABLES FROM MEMORY/MEM -> INSERT OR REPLACE INTO disk.global_variables - Separated DISK command handlers from MEMORY/RUNTIME handlers 3. lib/ProxySQL_Admin.cpp: - Added flush_mcp_variables___runtime_to_database() call to stats section to ensure MCP variables are repopulated when runtime_global_variables is cleared and refreshed 4. tests/mcp_module-t.cpp: - Added verbose diagnostic output throughout tests - Added section headers and test numbers for clarity - Added variable value logging and error logging All 52 MCP module tests now pass.	3 months ago
Rene Cannao	221ff23991	Add MySQL exploration MCP tools with SQLite catalog ... Implemented MCP (Model Context Protocol) server providing tools for LLM-based MySQL database exploration: - MySQL_Catalog: SQLite-based catalog for LLM external memory with upsert, get, search, list, merge, delete operations and FTS support - MySQL_Tool_Handler: 17+ database exploration tools with guardrails: * Inventory: list_schemas, list_tables * Structure: describe_table, get_constraints, describe_view * Profiling: table_profile, column_profile * Sampling: sample_rows (max 20), sample_distinct (max 50) * Query: run_sql_readonly (max 200 rows, 2s timeout, SELECT-only) * Relationship: suggest_joins, find_reference_candidates * Catalog: catalog_upsert, catalog_get, catalog_search, catalog_list, catalog_merge, catalog_delete - MCP Module Integration: * Added 6 new configuration variables for MySQL tool handler (mysql_hosts, mysql_ports, mysql_user, mysql_password, mysql_schema, catalog_path) * Added MySQL_Tool_Handler pointer to MCP_Threads_Handler * Implemented tool routing in MCP endpoint for tools/list, tools/describe, and tools/call methods - TAP Tests: Updated to expect 14 MCP variables (was 8) Files: - include/MySQL_Catalog.h, lib/MySQL_Catalog.cpp - include/MySQL_Tool_Handler.h, lib/MySQL_Tool_Handler.cpp - include/MCP_Thread.h, lib/MCP_Thread.cpp - include/MCP_Endpoint.h, lib/MCP_Endpoint.cpp - lib/Makefile, test/tap/tests/mcp_module-t.cpp	3 months ago
Rene Cannao	245e61ee86	Make MCP_Threads_Handler a standalone independent class ... Remove unnecessary inheritance from MySQL_Threads_Handler. The MCP module should be independent and not depend on MySQL/PostgreSQL thread handlers. Changes: - MCP_Threads_Handler now manages its own pthread_rwlock_t for synchronization - Simplified init() signature (removed unused num/stack parameters) - Added ProxySQL_Main_init_MCP_module() call in main initialization phase - Include only standard C++ headers (pthread.h, cstring, cstdlib)	3 months ago
Rene Cannao	87fff9e046	Add MCP (Model Context Protocol) module skeleton ... Add new MCP module supporting multiple MCP server endpoints over HTTPS with JSON-RPC 2.0 protocol skeleton. Each endpoint (/mcp/config, /mcp/observe, /mcp/query, /mcp/admin, /mcp/cache) is a distinct MCP server with its own authentication configuration. Features: - HTTPS server using existing ProxySQL TLS certificates - JSON-RPC 2.0 skeleton implementation (actual protocol TBD) - 5 MCP endpoints with per-endpoint auth configuration - LOAD/SAVE MCP VARIABLES admin commands - Configuration file support (mcp_variables section) Implementation follows GenAI module pattern: - MCP_Threads_Handler: Main module handler with variable management - ProxySQL_MCP_Server: HTTPS server wrapper using libhttpserver - MCP_JSONRPC_Resource: Base endpoint class with JSON-RPC skeleton	3 months ago