proxysql

Commit Graph

Author	SHA1	Message	Date
Rene Cannao	f852900365	Fix: Correct MCP catalog JSON parsing to handle special characters The catalog_search() and catalog_list() methods in MySQL_Catalog.cpp were manually building JSON strings by concatenating raw TEXT from SQLite without proper escaping. This caused parse errors when stored JSON contained quotes, backslashes, or newlines. Changes: - MySQL_Catalog.cpp: Use nlohmann::json to build proper nested JSON in search() and list() methods instead of manual concatenation - MySQL_Tool_Handler.cpp: Add try-catch for JSON parsing in catalog_get() - test_catalog.sh: Fix MCP URL path, add jq extraction for MCP protocol responses, add 3 special character tests (CAT013-CAT015) Test Results: All 15 catalog tests pass, including new tests that verify special characters (quotes, backslashes) are preserved.	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

Author

SHA1

Message

Date

Rene Cannao

f852900365

Fix: Correct MCP catalog JSON parsing to handle special characters

The catalog_search() and catalog_list() methods in MySQL_Catalog.cpp
were manually building JSON strings by concatenating raw TEXT from
SQLite without proper escaping. This caused parse errors when stored
JSON contained quotes, backslashes, or newlines.

Changes:
- MySQL_Catalog.cpp: Use nlohmann::json to build proper nested JSON
  in search() and list() methods instead of manual concatenation
- MySQL_Tool_Handler.cpp: Add try-catch for JSON parsing in catalog_get()
- test_catalog.sh: Fix MCP URL path, add jq extraction for MCP protocol
  responses, add 3 special character tests (CAT013-CAT015)

Test Results: All 15 catalog tests pass, including new tests that
verify special characters (quotes, backslashes) are preserved.

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 Commits (f8529003652ec3bb89e575fbe12e095a75b3d00f)