6 Commits (2ceaac049cb5dde499583562dfcdcb0f6210938b)

Author	SHA1	Message	Date
Rene Cannao	49e964bb02	Fix: Make ProxySQL MCP server return MCP-compliant tool responses ... The ProxySQL MCP server now wraps tool results in the correct MCP format: - result.content: array of content items (type: "text", text: "...") - result.isError: boolean Per MCP spec: https://modelcontextprotocol.io/specification/2025-11-25/server/tools Also simplified the bridge to pass through results directly since the server now returns the correct format.	4 months ago
Rene Cannao	6d83ff1680	Fix: unwrap ProxySQL response format in MCP tools and fix config syntax ... - Unwrap ProxySQL's {"success": ..., "result": ...} wrapper in tool responses for MCP protocol compliance - Fix proxysql.cfg missing closing brace for mcp_variables section	4 months ago
Rene Cannao	ced10dd054	Implement per-endpoint authentication for MCP endpoints ... This commit implements Phase 2 of the MCP multi-endpoint architecture: per-endpoint Bearer token authentication. ## Changes ### lib/MCP_Endpoint.cpp - Implemented `authenticate_request()` method with: - Per-endpoint token validation (mcp-{endpoint}_endpoint_auth) - Bearer token support via Authorization header - Query parameter fallback (?token=xxx) for simple testing - No authentication when token is not configured (backward compatible) - Proper 401 Unauthorized response on auth failure - Token whitespace trimming - Debug logging for troubleshooting ### doc/MCP/Architecture.md - Updated Per-Endpoint Authentication section with complete implementation - Marked Phase 3 authentication task as completed (✅) - Added authentication implementation code example ## Authentication Flow 1. Client sends request with Bearer token: - Header: `Authorization: Bearer <token>` - Or query param: `?token=<token>` 2. Server validates against endpoint-specific variable: - `/mcp/config` → `mcp-config_endpoint_auth` - `/mcp/observe` → `mcp-observe_endpoint_auth` - `/mcp/query` → `mcp-query_endpoint_auth` - `/mcp/admin` → `mcp-admin_endpoint_auth` - `/mcp/cache` → `mcp-cache_endpoint_auth` 3. Returns 401 Unauthorized if: - Auth is required but not provided - Token doesn't match expected value 4. Allows request if: - No auth token configured (backward compatible) - Token matches expected value ## Testing ```bash # Set auth token for /mcp/query endpoint mysql -h 127.0.0.1 -P 6032 -u admin -padmin \ -e "SET mcp-query_endpoint_auth='my-secret-token'; LOAD MCP VARIABLES TO RUNTIME;" # Test with Bearer token curl -k -X POST https://127.0.0.1:6071/mcp/query \ -H "Content-Type: application/json" \ -H "Authorization: Bearer my-secret-token" \ -d '{"jsonrpc":"2.0","method":"tools/list","id":1}' # Test with query parameter curl -k -X POST "https://127.0.0.1:6071/mcp/query?token=my-secret-token" \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","method":"tools/list","id":1}' ``` ## Status ✅ Authentication fully implemented and functional ⚠️ Testing with running ProxySQL instance still needed Co-authored-by: Claude <claude@anthropic.com>	4 months ago
Rene Cannao	c86a048d9c	Implement MCP multi-endpoint architecture with dedicated tool handlers ... This commit implements Option 1 (Multiple Tool Handlers) for the MCP module, where each of the 5 endpoints has its own dedicated tool handler with specific tools. ## Architecture Changes - Created MCP_Tool_Handler base class interface for all tool handlers - Each endpoint now has its own dedicated tool handler: - /mcp/config → Config_Tool_Handler (configuration management) - /mcp/query → Query_Tool_Handler (database exploration) - /mcp/admin → Admin_Tool_Handler (administrative operations) - /mcp/cache → Cache_Tool_Handler (cache management) - /mcp/observe → Observe_Tool_Handler (monitoring & metrics) ## New Files Base Interface: - include/MCP_Tool_Handler.h - Base class for all tool handlers Tool Handlers: - include/Config_Tool_Handler.h, lib/Config_Tool_Handler.cpp - include/Query_Tool_Handler.h, lib/Query_Tool_Handler.cpp - include/Admin_Tool_Handler.h, lib/Admin_Tool_Handler.cpp - include/Cache_Tool_Handler.h, lib/Cache_Tool_Handler.cpp - include/Observe_Tool_Handler.h, lib/Observe_Tool_Handler.cpp Documentation: - doc/MCP/Architecture.md - Comprehensive architecture documentation ## Modified Files - include/MCP_Thread.h, lib/MCP_Thread.cpp - Added 5 tool handler pointers - include/MCP_Endpoint.h, lib/MCP_Endpoint.cpp - Use tool_handler base class - lib/ProxySQL_MCP_Server.cpp - Create and pass handlers to endpoints - lib/Makefile - Added new source files ## Implementation Status - Config_Tool_Handler: Functional (get_config, set_config, list_variables, get_status) - Query_Tool_Handler: Functional (wraps MySQL_Tool_Handler, all 18 tools) - Admin_Tool_Handler: Stub implementations (TODO: implement) - Cache_Tool_Handler: Stub implementations (TODO: implement) - Observe_Tool_Handler: Stub implementations (TODO: implement) See GitHub Issue #8 for detailed TODO list. Co-authored-by: Claude <claude@anthropic.com>	4 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	5 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	5 months ago