7 Commits (e53d2c76f93567eec5d342ccddf7ff9c2bd8fb25)

Author	SHA1	Message	Date
Rene Cannao	5d45d17456	mcp stats: split connection metrics from debug free-pool snapshots ... Refactor MCP stats connection tools so operational pool metrics remain lightweight while debug-level free-connection details are exposed through a dedicated gated tool. Changes in this commit: - Updated stats tool catalog and dispatch to add show_free_connections and keep show_connections focused on per-server pool metrics only. - Removed free-connection payload from show_connections and added explicit compatibility error when callers still pass detail=true, with guidance to use show_free_connections. - Implemented show_free_connections using in-memory hostgroup manager snapshots (MySQL and PgSQL) with hostgroup/server filtering and summary counters. - Added MCP runtime variable mcp-stats_enable_debug_tools (default false), including variable registration, getter/setter handling, and config default in proxysql.cfg. - Added extensive doxygen comments across modified code paths to document behavior, rationale, filters, and output contracts. - Added TAP coverage in mcp_show_connections_commands_inmemory-t for: show_commands baseline, show_connections aggregate-only contract, debug tool gating behavior, and enabled-path validation for show_free_connections on both MySQL and PgSQL. - Registered the new TAP test in test groups.	2 months ago
Rene Cannao	e762f91cda	MCP stats: add in-memory processlist filtering and PgSQL concurrency stress TAP ... Replace direct stats-schema reads in MCP show_processlist with in-memory processlist access via SQL3_Processlist query options. Add processlist query option types in proxysql_admin interfaces and implement filtering, sorting, and pagination post-processing in both MySQL and PgSQL thread implementations. Introduce configurable MCP cap mcp_stats_show_processlist_max_rows (default 200, max 1000), wire it through MCP variable loading, and expose it in default config. Expand Stats_Tool_Handler processlist handling to parse filter/sort arguments, enforce cap metadata, and return consistent MCP payload fields from in-memory snapshots. Add extensive doxygen documentation in the touched headers and source blocks to describe API contracts, filtering behavior, and runtime constraints. Add new TAP test mcp_pgsql_concurrency_stress-t that generates sustained concurrent PgSQL traffic (simple reads, read/write table workload, randomized pg_sleep) while polling MCP show_processlist and show_queries in parallel with filter and ordering assertions. Validation performed locally: mcp_pgsql_concurrency_stress-t (31 assertions) and mcp_show_queries_topk-t (12 assertions).	2 months ago
Rene Cannao	c126e63a23	mcp stats: refresh stats tables under admin mutex before direct reads ... Problem MCP stats tools were querying stats.* tables directly through admindb. Unlike admin-session SQL, that path bypassed GenericRefreshStatistics() and could return stale or empty data for runtime-populated tables. What changed - Updated Stats_Tool_Handler::execute_admin_query() to mirror admin-session semantics for stats reads: - acquire GloAdmin->sql_query_global_mutex - optionally invoke ProxySQL_Admin::GenericRefreshStatistics(sql, ..., false) - execute admindb statement - release sql_query_global_mutex - Added strict input validation and explicit lock/unlock error reporting. - Added refresh_before_query parameter (default true) to avoid duplicate refresh passes for secondary count queries. - Switched secondary COUNT(*) calls in show_processlist/show_queries/ show_errors/show_query_rules to refresh_before_query=false. Documentation - Expanded Doxygen in include/Stats_Tool_Handler.h for execute_admin_query() to document locking, refresh behavior, and performance tradeoff. - Added detailed Doxygen above the execute_admin_query() implementation in lib/Stats_Tool_Handler.cpp. Testing - Added TAP integration test test/tap/tests/mcp_stats_refresh-t.cpp. - The test injects a synthetic stale marker row into stats.stats_mysql_global, calls /mcp/stats show_status, and verifies the marker disappears after refresh-before-read. - Added helper-level Doxygen in the test for setup/parsing behavior. Build verification - Compiled lib object: make -C lib obj/Stats_Tool_Handler.oo - Compiled TAP target: make -C test/tap/tests mcp_stats_refresh-t - Direct runtime execution of the TAP test in this workspace could not fully run because no local admin listener was available (connection to 127.0.0.1:6032 failed).	2 months ago
Rene Cannao	33fce1ca35	MCP stats: address review findings and add detailed docs	2 months ago
Wazir Ahmed	ae92ae265f	Merge branch 'v3.0' into v4.0-mcp-stats	2 months ago
Wazir Ahmed	7f19b642c2	MCP: Rewrite stats tool handlers based on updated spec ... Signed-off-by: Wazir Ahmed <wazir@proxysql.com>	2 months ago
Wazir Ahmed	643b322f29	MCP: Add stats endpoint and tools ... Signed-off-by: Wazir Ahmed <wazir@proxysql.com>	2 months ago