9 Commits (e2d71ec4a2f36433eeefdbd75f2f420da747f5f1)

Author	SHA1	Message	Date
Rene Cannao	33a87c66a7	Fix critical issues identified by gemini-code-assist ... This commit addresses critical issues identified in the code review: 1. Fix non-blocking read handling: - lib/GenAI_Thread.cpp (listener_loop): Properly handle EAGAIN/EWOULDBLOCK - Return early on EAGAIN/EWOULDBLOCK instead of closing connection - Handle EOF (n==0) separately from errors (n<0) - lib/MySQL_Session.cpp (handle_genai_response): Properly handle EAGAIN/EWOULDBLOCK - Return early on EAGAIN/EWOULDBLOCK instead of cleaning up request - Use goto for cleaner control flow 2. Refactor JSON building/parsing to use nlohmann/json: - lib/GenAI_Thread.cpp (call_llama_batch_embedding): - Replace manual stringstream JSON building with nlohmann/json - Replace fragile string-based parsing with nlohmann/json::parse() - Support multiple response formats (results, data, embeddings) - Add proper error handling with try/catch - lib/GenAI_Thread.cpp (call_llama_rerank): - Replace manual stringstream JSON building with nlohmann/json - Replace fragile string-based parsing with nlohmann/json::parse() - Support multiple response formats and field names - Add proper error handling with try/catch These changes: - Fix potential connection drops due to incorrect EAGAIN handling - Improve security and robustness of JSON handling - Reduce code complexity and improve maintainability - Add support for multiple API response formats	2 months ago
Rene Cannao	db2485be37	Add comprehensive doxygen documentation to GenAI async module ... This commit adds extensive doxygen-format documentation to all key functions in the GenAI async module to improve code maintainability and API clarity. Documented functions: - lib/GenAI_Thread.cpp: - unregister_client() - cleanup flow and usage - call_llama_batch_embedding() - HTTP client with JSON format - call_llama_rerank() - HTTP client with JSON format - execute_sql_for_documents() - stub for document_from_sql - process_json_query() - autonomous JSON query processing - lib/MySQL_Session.cpp: - genai_send_async() - async flow and error handling - handle_genai_response() - response handling flow - genai_cleanup_request() - resource cleanup details - check_genai_events() - main loop integration Enhanced header documentation: - GenAI_RequestHeader - communication flow details - GenAI_ResponseHeader - response format details - register_client() - registration flow - unregister_client() - cleanup flow - embed_documents() - BLOCKING warning - rerank_documents() - BLOCKING warning - process_json_query() - supported formats All documentation includes: - @brief descriptions - @param parameter details - @return return value explanations - @note important warnings and usage notes - @see cross-references to related functions - Detailed workflow descriptions - Error handling details - Memory management notes	2 months ago
Rene Cannao	0ff2e38e22	Implement async GenAI module with socketpair-based non-blocking architecture ... - Add GenAI_RequestHeader and GenAI_ResponseHeader protocol structures for socketpair communication - Implement GenAI listener_loop to read requests from epoll and queue to workers - Implement GenAI worker_loop to process requests and send responses via socketpair - Add GenAI_PendingRequest state management to MySQL_Session/Base_Session - Implement MySQL_Session async handlers: genai_send_async(), handle_genai_response(), genai_cleanup_request() - Modify MySQL_Session genai handler to use async path when epoll is available - Initialize GenAI epoll fd in Base_Session::init() This completes the async architecture that was planned but never fully implemented (previously had only placeholder comments). The GenAI module now processes requests asynchronously without blocking MySQL threads.	2 months ago
Rene Cannao	bbad8ab4f3	Fix GenAI variable naming and add comprehensive TAP tests ... - Fix double prefix bug in genai_thread_variables_names[] where variable names included the "genai_" prefix, but flush functions added "genai-" prefix, creating names like "genai-genai_threads" - Update get_variable() and set_variable() to use names without prefix - Add comprehensive TAP tests for GenAI embedding and reranking with 40 tests covering configuration, single/batch embedding, reranking, error handling, and GENAI: query syntax variations - Fix test expectations for leading space behavior (should be rejected) - Add tests for genai-embedding_timeout_ms and genai-rerank_timeout_ms	2 months ago
Rene Cannao	a82f58e22b	Refactor GenAI module for autonomous JSON query processing ... Move all JSON parsing and operation routing logic from MySQL_Session to GenAI module. MySQL_Session now simply passes GENAI: queries to the GenAI module via process_json_query(), which handles everything autonomously. This simplifies the architecture and achieves better separation of concerns: - MySQL_Session: Detects GENAI: prefix and forwards to GenAI module - GenAI module: Handles JSON parsing, operation routing, and result formatting Changes: - GenAI_Thread.h: Add GENAI_OP_JSON operation type, json_query field, and process_json_query() method declaration - GenAI_Thread.cpp: Implement process_json_query() with embed/rerank support and document_from_sql framework (stubbed for future MySQL connection handling) - MySQL_Session.cpp: Simplify genai handler to just call process_json_query() and parse JSON result (reduces net code by ~215 lines)	2 months ago
Rene Cannao	253591d262	Add experimental GenAI EMBED: query support for MySQL ... This commit adds experimental support for generating embeddings directly from MySQL queries using a special EMBED: syntax. Changes: - Add MYDS_INTERNAL_GENAI to MySQL_DS_type enum for GenAI connections - Add handler___status_WAITING_CLIENT_DATA___STATE_SLEEP___MYSQL_COM_QUERY___genai_embedding() - Implement EMBED: query detection and JSON parsing for document arrays - Build CSV resultset with embeddings (1 row per document, 1 column) - Add myconn NULL check in MySQL_Thread for INTERNAL_GENAI type - Add "debug_genai" name to debug module array - Remove HAVE_LIBCURL checks (libcurl is always statically linked) - Use static curl header: "curl/curl.h" instead of <curl/curl.h> - Remove curl_global_cleanup() from GenAI module (should only be in main()) Query format: EMBED: ["doc1", "doc2", ...] Result format: 1 row per document, 1 column with CSV embeddings Error handling uses MySQL ERR_Packet instead of resultsets.	2 months ago
Rene Cannao	1da9e384d2	Add poll() fallback for GenAI module when epoll is not available ... This change adds compile-time detection and fallback to poll() on systems that don't support epoll(), improving portability across different platforms. Header changes (include/GenAI_Thread.h): - Make sys/epoll.h include conditional on #ifdef epoll_create1 Implementation changes (lib/GenAI_Thread.cpp): - Add poll.h include for poll() support - Add EPOLL_CREATE compatibility macro (epoll_create1 or epoll_create) - Add #include <poll.h> for poll() support - Update init() to use pipe() for wakeup when epoll is not available - Update register_client() to skip epoll_ctl when epoll is not available - Update unregister_client() to skip epoll_ctl when epoll is not available - Update listener_loop() to use poll() when epoll is not available The compile-time detection works by checking if epoll_create1 is defined (Linux-specific glibc function since 2.9). On systems without epoll, the code falls back to using poll() with a pipe for wakeup signaling.	2 months ago
Rene Cannao	960704066d	Implement real GenAI module with embedding and rerank support ... Header changes (include/GenAI_Thread.h): - Add GenAI_EmbeddingResult, GenAI_RerankResult, GenAI_RerankResultArray structs - Add GenAI_Document, GenAI_Request structures for internal queue - Add 5 configuration variables: genai_threads, genai_embedding_uri, genai_rerank_uri, genai_embedding_timeout_ms, genai_rerank_timeout_ms - Add status variables: threads_initialized, active_requests, completed_requests, failed_requests - Add public API methods: embed_documents(), rerank_documents() - Add client management: register_client(), unregister_client() - Add threading components: worker threads, listener thread, epoll Implementation changes (lib/GenAI_Thread.cpp): - Implement move constructors/destructors for result structures - Initialize default values for variables (threads=4, embedding port 8013, rerank port 8012, timeout 30s) - Implement get_variable/set_variable with validation for all 5 variables - Implement call_llama_batch_embedding() using libcurl - Implement call_llama_rerank() using libcurl - Implement embed_documents() public API (single or batch) - Implement rerank_documents() public API with top_n parameter - Implement register_client() for socket pair integration - Implement listener_loop() and worker_loop() for async processing - Add proper error handling and status tracking Debug integration (include/proxysql_structs.h): - Add PROXY_DEBUG_GENAI to debug_module enum	2 months ago
Rene Cannao	c476f56f97	Add initial GenAI module placeholder ... Implement a new GenAI module for ProxySQL with basic infrastructure: - GenAI_Threads_Handler class for managing GenAI module configuration - Support for genai- prefixed variables in global_variables table - Dummy variables: genai-var1 (string) and genai-var2 (integer) - Config file support via genai_variables section - Flush functions for runtime_to_database and database_to_runtime - Module lifecycle: initialization at startup, graceful shutdown - LOAD/SAVE GENAI VARIABLES admin command infrastructure Core functionality verified: - Config file loading works - Variables persist in global_variables table - Disk save/load via SQL works - Module initializes and shuts down properly Related files: - include/GenAI_Thread.h: New GenAI thread handler class - lib/GenAI_Thread.cpp: Implementation with dummy variables - lib/Admin_Handler.cpp: Added GENAI command vectors and handlers - lib/Admin_FlushVariables.cpp: Added genai flush functions - lib/ProxySQL_Admin.cpp: Added init_genai_variables() and load_save_disk_commands entry - include/proxysql_admin.h: Added function declarations - lib/Makefile: Added GenAI_Thread.oo to build - src/main.cpp: Added module initialization and cleanup - src/proxysql.cfg: Added genai_variables configuration section	2 months ago