11 Commits (ad166c6b8a3a30d61ddd0dbbfc0b7b45f32f4df6)

Author	SHA1	Message	Date
Rene Cannao	757cdaff15	fix: Improve error logging and fix llm.domain_set_members ... 1. Fix error logging to catch ALL tool failures, not just those with both success and result fields. Previously, error responses like {"success": false, "error": "..."} without a result field were silently ignored. 2. Fix llm.domain_set_members to accept both array and JSON string formats for the members parameter. Some clients send it as a JSON string, others as a native array. 3. Add detailed error logging for llm.domain_set_members failures, including what was actually received.	2 months ago
Rene Cannao	d962caea7e	feat: Improve MCP error logging with request payloads ... Exception handlers now log the full request payload that caused the error, making debugging much easier. Changes: - Move req_body/req_path declarations outside try block so catch handlers can access them - Log request payload in all exception handlers (parse errors, std::exception, and catch-all) - Log tool arguments when tool execution fails Previously, exceptions would only log the error message without context, making it impossible to reproduce the issue. Now the full payload is logged.	2 months ago
Rene Cannao	53ecda7730	fix: Add comprehensive error handling and logging for MCP tools ... - Add try-catch around handle_jsonrpc_request to catch unexpected exceptions - Add detailed logging for tool execution success/failure - Add proper SQLite error checking in create_agent_run with error messages - Fix json_int/json_double to handle both numbers and numeric strings The json_int function was throwing exceptions when receiving numeric strings (e.g., "14" instead of 14) from clients, causing 500 errors. Now it handles both formats gracefully. Also added logging so tool failures are visible in logs instead of being silent 500 errors.	2 months ago
Rene Cannao	1b7335acfe	Fix two-phase discovery documentation and scripts ... - Add mcp_config.example.json for Claude Code MCP configuration - Fix MCP bridge path in example config (../../proxysql_mcp_stdio_bridge.py) - Update Two_Phase_Discovery_Implementation.md with correct Phase 1/Phase 2 usage - Fix Two_Phase_Discovery_Implementation.md DELETE FROM fts_objects to scope to run_id - Update README.md with two-phase discovery section and multi-agent legacy note - Create static_harvest.sh bash wrapper for Phase 1 - Create two_phase_discovery.py orchestration script with prompts - Add --run-id parameter to skip auto-fetch - Fix RUN_ID placeholder mismatch (<USE_THE_PROVIDED_RUN_ID>) - Fix catalog path default to mcp_catalog.db - Add test_catalog.sh to verify catalog tools work - Fix Discovery_Schema.cpp FTS5 syntax (missing space) - Remove invalid CREATE INDEX on FTS virtual tables - Add MCP tool call logging to track tool usage - Fix Static_Harvester::get_harvest_stats() to accept run_id parameter - Fix DELETE FROM fts_objects to only delete for specific run_id - Update system prompts to say DO NOT call discovery.run_static - Update user prompts to say Phase 1 is already complete - Add --mcp-only flag to restrict Claude Code to MCP tools only - Make FTS table failures non-fatal (check if table exists first) - Add comprehensive documentation for both discovery approaches	2 months ago
Rene Cannao	606fe2e93c	Fix: Address code review feedback from gemini-code-assist ... Python bridge (scripts/mcp/proxysql_mcp_stdio_bridge.py): - Make log file path configurable via PROXYSQL_MCP_BRIDGE_LOG env var - Add httpx.RequestError exception handling for network issues - Fix asyncio.CancelledError not being re-raised (HIGH priority) - Replace deprecated asyncio.get_event_loop() with get_running_loop() C++ server (lib/MCP_Endpoint.cpp): - Refactor handle_tools_call() to reduce code duplication - Handle string responses directly without calling .dump() - Single shared wrapping block for all response types Per review: https://github.com/ProxySQL/proxysql-vec/pull/11	2 months ago
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.	2 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	2 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>	2 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>	2 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	2 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	2 months ago