1082 Commits (fa6ebcdcc9b7463bfee0f453b74e8ac8935390bf)

Author	SHA1	Message	Date
René Cannaò	419cd7608b	Merge commit from fork ... Fix COM_STMT_CLOSE short packet handling	4 days ago
Rene Cannao	b2f4b4f9a0	Fix crash when COM_BINLOG_DUMP received with idle backends from other hostgroups (#5556) ... When a session has backend connections to multiple hostgroups and receives COM_BINLOG_DUMP, GPFC_Replication_SwitchToFastForward() transitions the session to FAST_FORWARD mode but only manages the active backend. Idle backends from other hostgroups remain in the session's mybes array with async_state_machine==ASYNC_IDLE. If MySQL's wait_timeout closes one of these idle connections, the resulting POLLIN event causes handler() to be called with ASYNC_IDLE, which has no case in the switch and hits assert(0). Fix: Clean up idle backends from other hostgroups during the FAST_FORWARD transition in GPFC_Replication_SwitchToFastForward(). These connections will never be used again, so they are destroyed immediately. Includes a regression test (test_binlog_dump_multi_backend_crash-t) that: - Sets up two hostgroups with query rules routing SELECTs to reader HG - Creates backend connections to both hostgroups on one session - Sends COM_BINLOG_DUMP to enter FAST_FORWARD mode - Waits for wait_timeout to close the idle backend - Verifies ProxySQL does not crash	1 week ago
Rene Cannao	9450bf52e2	Fix COM_STMT_CLOSE short packet handling	3 weeks ago
Rene Cannao	6b46b26931	chore: implement PR review feedback for release tier system ... - Makefile: normalized GIT_VERSION by stripping 'v' prefix before arithmetic. - Makefile: corrected .PHONY declaration for build_deps_debug_default. - Admin Handler: properly guarded TSDB commands to return error when disabled. - REST API: removed redundant nested guards inside tsdb_resource class. - Statistics: implemented rigorous input validation for set_variable. - Statistics: added return value checks and rollback logic for TSDB migrations. - Statistics: implemented bounded concurrency (batching) for backend probes. - FFTO: implemented cumulative buffer limit enforcement in MySQL and PgSQL. - FFTO: ensured initial packet capture in PgSQL_Session by early initialization. - FFTO: improved reassembly buffer compaction logic. - Headers: default-initialized ffto_bypassed to false. - Code cleanup: merged redundant PROXYSQLFFTO guards.	1 month ago
Rene Cannao	c2f678a9de	feat: implement release tiers and feature guards for v3.0, v3.1, and v4.0 ... This commit introduces a structured release tier system controlled by environment variables, allowing three distinct ProxySQL versions to be built from the same codebase while maintaining a clear upgrade path. Key Changes: - Tier 1 (v3.0.x Stable): Default build including bug fixes and core enhancements. - Tier 2 (v3.1.x Innovative): Enabled via PROXYSQL31=1. Adds FFTO and TSDB. - Tier 3 (v4.0.x AI/MCP): Enabled via PROXYSQLGENAI=1. Adds the AI stack. Implementation Details: - Makefile: Implemented dynamic versioning logic that increments the minor version for v3.1 and the major version for v4.0. Added tier documentation. - Feature Guards: Introduced PROXYSQLFFTO and PROXYSQLTSDB guards across ProxySQL_Admin, ProxySQL_Statistics, REST API, and HTTP server. - FFTO: Guarded Fast Forward Traffic Observer in MySQL and PgSQL sessions, including thread-local variables and configuration parameters. - TSDB: Guarded the entire Time Series Database subsystem, including SQLite table definitions, background loops, and REST API endpoints. - Build Fixes: * Fixed 'proxy_debug_func' linkage by adding extern "C" and moving the definition outside of DEBUG guards to ensure non-debug builds link correctly. * Corrected misplaced/nested DEBUG and PROXYSQLFFTO guards. * Verified build stability for all tiers (unset, PROXYSQL31=1, PROXYSQLGENAI=1).	1 month ago
Rene Cannao	e53d2c76f9	Address PR #5410 review findings across FFTO, sessions, TAP, and docs ... Apply actionable bot review feedback from PR #5410 without behavior drift:\n- fix MySQL/PgSQL FFTO digest normalization and max-length hashing\n- add early FFTO packet/message size guards for bypass safety\n- restore MySQL session GTID reset and harden GenAI async error ownership\n- add null-check for stripped KILL query normalization path\n- call FFTO on_close() before observer reset/bypass in session flows\n- fix processlist query-options default pagination limit semantics\n- fix TAP noise_failures locking race and noise-aware plan count\n- extend wait_get_enpoint_ready with optional basic-auth passthrough\n- update MCP architecture docs from observe->stats naming\n- clean corrupted character in pgsql query-cache test comment\n\nValidation run:\n- git diff --check\n- make -C test/tap/tap tap.o utils_mariadb.o utils_mysql57.o utils_mysql8.o -j4\n- make -C lib obj/MySQLFFTO.oo obj/PgSQLFFTO.oo obj/MySQL_Session.oo obj/PgSQL_Session.oo obj/Query_Processor.oo -j4	2 months ago
Rene Cannao	79c0b383e8	integration: fix pre-CI issues in unified branch	2 months ago
Rene Cannao	90462f6d5a	ffto: harden MySQL/PgSQL observer state handling and align tests/docs ... Address outstanding review findings for FFTO on v3.0-ff_inspect and tighten protocol-state correctness for both engines. MySQL FFTO - Restrict on_close() reporting to true in-flight states and always clear query tracking state after close. - Add explicit active-query cleanup helpers and invoke them on state transitions to IDLE. - Preserve accounting on mid-resultset server ERR packets by reporting current query in READING_COLUMNS/READING_ROWS before reset. - Keep prepared-statement lifecycle cleanup robust (pending prepare cleared on prepare completion paths). MySQL session integration - Extract duplicated FAST_FORWARD client FFTO feed logic into observe_ffto_client_packet() and reuse it from all call sites. PostgreSQL FFTO - Replace regex-based CommandComplete parsing with lightweight token parsing, including NUL/whitespace trimming and strict numeric validation. - Add queued tracking for pipelined extended-protocol executes so query text and response attribution stay aligned under Parse/Bind/Execute pipelining. - Distinguish finalize semantics (execute-finalize on CommandComplete vs sync-finalize on ReadyForQuery) and centralize finalize/activation helpers. - Add frontend Close ('C') handling to evict statement/portal mappings. - Harden client/server message parsing with additional length checks. - Extend affected-row command tag coverage to COPY and MERGE. TAP tests - Stabilize test plans for failure paths by replacing early returns with a fail-and-skip-remaining flow and shared cleanup labels. - Ensure both MySQL and PgSQL FFTO tests preserve planned assertion counts under setup/prepare/execute failures. Documentation - Align FFT0 design doc state/response descriptions with current implementation (ReadyForQuery handling, pipelined queueing, supported PG command tags). - Fix wording/typo issues in protocol section. Validation performed - make -C lib -j4 - make -C test/tap/tests test_ffto_mysql-t test_ffto_pgsql-t -j4 Runtime execution of the two TAP binaries remains environment-dependent (admin endpoint connectivity required).	2 months ago
Rene Cannao	1258a1f2f2	Address PR reviews: improve performance, safety, and robustness of FFTO	2 months ago
Rene Cannao	db04a54c92	Fix memory corruption and stack overflow in FFTO due to large queries	2 months ago
Rene Cannao	3a3be5a559	Implement Fast Forward Traffic Observer (FFTO) for MySQL and PostgreSQL ... - Added TrafficObserver base interface - Implemented MySQLFFTO and PgSQLFFTO classes for protocol-aware observation - Integrated FFTO hooks into MySQL and PostgreSQL session handlers in FAST_FORWARD state - Added configuration variables: mysql-ffto_enabled, mysql-ffto_max_buffer_size, pgsql-ffto_enabled, pgsql-ffto_max_buffer_size - Implemented query digest extraction and reporting parity with internal stats - Added session-level bypass when packet size exceeds buffer threshold - Included architectural documentation in doc/ffto_design.md	2 months ago
René Cannaò	3b578db4bf	Merge pull request #5374 from sysown/v3.0-test0213 ... Fix Valgrind-reported uninitialized memory issues	2 months ago
Rene Cannao	af58865b06	Fix uninitialized memory in QueryParserArgs.buf ... Use memset to zero-initialize the entire QueryParserArgs struct instead of individually setting only digest_text and first_comment to NULL. This fixes Valgrind errors about use of uninitialised values in strcasestr() when reading from the uninitialized buf array. Fixes errors like: Use of uninitialised value of size 8 at tolower (ctype.c:46) by strcasestr by MySQL_Connection::ProcessQueryAndSetStatusFlags(char*)	2 months ago
Rene Cannao	41564acaac	Fix #5355: Add null pointer check in RequestEnd() to prevent use-after-free crash ... This commit addresses a use-after-free race condition that could cause ProxySQL to crash with SIGSEGV during COM_CHANGE_USER timeout scenarios. Root Cause: ----------- When a session is in RESETTING_CONNECTION status and the backend times out during COM_CHANGE_USER, the code calls RequestEnd() to handle the error. However, RequestEnd() accesses client_myds without null checks. If the session is marked as unhealthy and deleted by ProcessAllSessions_Healthy0() while RequestEnd() is still executing, this results in a use-after-free crash. The crash is particularly likely during AWS Aurora failures when: 1. Monitor detects Aurora master timeouts 2. Multiple sessions experience connection issues 3. Many client connections are marked unhealthy 4. The high volume of session deletions increases race condition probability Fix: ---- Added a null pointer check before accessing client_myds in the unexp_com_pings handling code within RequestEnd(). This is a defensive programming fix that prevents the crash when client_myds has been freed. A more robust fix would involve proper session lifecycle management with reference counting. Fixes: #5355	2 months ago
René Cannaò	de0a9b9c27	Merge pull request #5093 from Gonlo2/fix-usage-deleted-con ... Avoid usage of deleted connection	2 months ago
Rene Cannao	48bc7dd7bf	Merge v4.0 GenAI features into v3.0 with conditional compilation ... This commit merges the experimental v4.0 GenAI/MCP features into the stable v3.0 branch using conditional compilation. All v4.0 features are disabled by default and only enabled when PROXYSQLGENAI=1 is set at compile time. Changes: Build System: - Modified main Makefile to pass PROXYSQLGENAI flag to sub-makefiles - Modified deps/Makefile to conditionally build sqlite-vec and sqlite-rembed - Modified lib/Makefile to add PSQLGA flag and include GenAI object files - Modified src/Makefile to add PSQLGA flag and conditional linking Headers (wrapped with #ifdef PROXYSQLGENAI): - All 20 new GenAI header files in include/ - Modified cpp.h, proxysql_glovars.hpp, proxysql_admin.h - Modified ProxySQL_Admin_Tables_Definitions.h for GenAI/MCP tables Source Files: - All 22 new GenAI source files in lib/ wrapped with #ifdef PROXYSQLGENAI - Modified src/main.cpp for conditional global variables and init/shutdown - Modified Admin_Handler.cpp for conditional command handlers - Modified Admin_Bootstrap.cpp for conditional table registration - Modified Admin_FlushVariables.cpp for conditional variable flushing - Modified ProxySQL_Admin.cpp for conditional admin methods - Modified ProxySQL_Admin_Stats.cpp for conditional MCP stats functions - Modified proxy_sqlite3_symbols.cpp to always compile (needed by core) - Modified MySQL_Session.cpp for conditional GenAI function calls Test Files: - Renamed test_mcp_query_rules-t to test_mcp_query_rules-t.sh - Renamed test_mcp_rag_metrics-t to test_mcp_rag_metrics-t.sh - Modified anomaly_detection-t.cpp for conditional test execution Usage: # Build without GenAI (v3.0 mode - default) make clean && make build_deps -j$(nproc) && make build_lib -j$(nproc) && make build_src -j$(nproc) # Build with GenAI (v4.0 mode) make clean && PROXYSQLGENAI=1 make build_deps -j$(nproc) && PROXYSQLGENAI=1 make build_lib -j$(nproc) && PROXYSQLGENAI=1 make build_src -j$(nproc)	2 months ago
Rene Cannao	c914feb230	Fix security issues identified in PR #5312 code review ... This commit addresses critical and important security vulnerabilities found during comprehensive code review of the Gen AI features merge. Critical fixes: - SQL injection vulnerabilities in MySQL_Tool_Handler.cpp: - Added validate_sql_identifier() for schema/table validation - Added escape_string() for MySQL string escaping using mysql_real_escape_string - Fixed list_tables(), describe_table(), sample_rows(), sample_distinct() - SQL injection vulnerabilities in Query_Tool_Handler.cpp: - Added validate_sql_identifier_sqlite() for identifier validation - Added escape_string_literal() for SQLite string escaping - Fixed list_tables tool and catalog.get_relationships function - Use-after-free race condition in GenAI_Thread: - Changed shutdown_ from int to std::atomic<int> for proper memory ordering - Added additional shutdown check in worker_loop after popping request Important fixes: - Buffer overflow risks from sprintf usage: - Converted all sprintf() calls to snprintf() in GenAI_Thread.cpp - Converted sprintf() to snprintf() in MySQL_Session.cpp - Worker loop shutdown race condition: - Added shutdown check after popping request from queue - Properly clean up client_fd when shutdown is detected These fixes ensure: 1. All user input is properly validated before use in SQL queries 2. String values are properly escaped using database-specific escaping 3. Thread-safe shutdown with proper memory ordering guarantees 4. Bounds-safe string formatting to prevent buffer overflows	3 months ago
René Cannaò	75a62f334d	Merge branch 'v4.0' into v3.1-vec ... Signed-off-by: René Cannaò <rene@proxysql.com>	3 months ago
Rene Cannao	a3f0bade4e	feat: Convert NL2SQL to generic LLM bridge ... - Rename NL2SQL_Converter to LLM_Bridge for generic prompt processing - Update MySQL protocol handler from /* NL2SQL: */ to /* LLM: */ - Remove SQL-specific fields (sql_query, confidence, tables_used) - Add GENAI_OP_LLM operation type to GenAI module - Rename all genai_nl2sql_* variables to genai_llm_* - Update AI_Features_Manager to use LLM_Bridge - Deprecate ai_nl2sql_convert MCP tool with error message - LLM bridge now handles any prompt type via MySQL protocol This enables generic LLM access (summarization, code generation, translation, analysis) while preserving infrastructure for future NL2SQL implementation via Web UI + external agents.	3 months ago
Rene Cannao	a7dac5ef3d	feat: Make NL2SQL use async GenAI path instead of blocking calls ... This is a critical architectural fix - NL2SQL was making blocking calls to LLMs which would block the entire MySQL thread. Now NL2SQL uses the same async socketpair pattern as the GENAI embed/rerank operations. Changes: - Added nl2sql operation type to process_json_query() in GenAI module - Updated NL2SQL handler to construct JSON query and use async GENAI path - Added extern declaration for GloAI in GenAI_Thread.cpp - Falls back to synchronous path only on systems without epoll Architecture: - Before: NL2SQL: query → blocking nl2sql->convert() → blocks MySQL thread - After: NL2SQL: query → JSON GENAI request → async socketpair → non-blocking JSON protocol for NL2SQL: GENAI: {"type": "nl2sql", "query": "Show customers", "schema": "mydb"} The NL2SQL result is delivered asynchronously through the existing GENAI response handler, making the system fully non-blocking. Related to: https://github.com/ProxySQL/proxysql-vec/pull/13	3 months ago
Rene Cannao	ae4200dbc0	Enhance AI features with improved validation, memory safety, error handling, and performance monitoring ... - Rename validate_provider_name to validate_provider_format for clarity - Add null checks and error handling for all strdup() operations - Enhance error messages with more context and HTTP status codes - Implement performance monitoring with timing metrics for LLM calls and cache operations - Add comprehensive test coverage for edge cases, retry scenarios, and performance - Extend status variables to track performance metrics - Update MySQL session to report timing information to AI manager	3 months ago
Rene Cannao	52a70b0b09	feat: Implement AI-based Anomaly Detection for ProxySQL ... Phase 3: Anomaly Detection Implementation This commit implements a comprehensive multi-stage anomaly detection system for real-time SQL query security analysis. **Core Detection Methods:** 1. **SQL Injection Pattern Detection** (lib/Anomaly_Detector.cpp) - Regex-based detection of 11 SQL injection patterns - Suspicious keyword detection (11 patterns) - Covers: tautologies, union-based, comment-based, stacked queries 2. **Query Normalization** (lib/Anomaly_Detector.cpp:normalize_query) - Converts to lowercase - Removes SQL comments - Replaces string/numeric literals with placeholders - Normalizes whitespace 3. **Rate Limiting** (lib/Anomaly_Detector.cpp:check_rate_limiting) - Per user/host query rate tracking - Configurable time windows (3600s default) - Auto-block on threshold exceeded - Prevents DoS and brute force attacks 4. **Statistical Anomaly Detection** (lib/Anomaly_Detector.cpp:check_statistical_anomaly) - Z-score based outlier detection - Abnormal execution time detection (>5s) - Large result set detection (>10000 rows) - Behavioral profiling per user 5. **Embedding-based Similarity** (lib/Anomaly_Detector.cpp:check_embedding_similarity) - Placeholder for vector similarity search - Framework for sqlite-vec integration - Detects novel attack variations **Query Flow Integration:** - Added `detect_ai_anomaly()` to MySQL_Session (line 3626) - Integrated after libinjection SQLi detection (line 5150) - Blocks queries when risk threshold exceeded (default: 0.70) - Sends error response with anomaly details **Status Variables Added:** - `ai_detected_anomalies`: Total anomalies detected - `ai_blocked_queries`: Total queries blocked - Available via: `SELECT * FROM stats_mysql_global` **Configuration (defaults):** - `enabled`: true - `risk_threshold`: 70 (0-100) - `similarity_threshold`: 85 (0-100) - `rate_limit`: 100 queries/hour - `auto_block`: true - `log_only`: false **Detection Pipeline:** ``` Query → SQLi Check → AI Anomaly Check → [Block if needed] → Execute (libinjection) (Multi-stage) ``` **Files Modified:** - include/MySQL_Session.h: Added detect_ai_anomaly() declaration - include/MySQL_Thread.h: Added AI status variables - lib/Anomaly_Detector.cpp: Full implementation (700+ lines) - lib/MySQL_Session.cpp: Integration and query flow - lib/MySQL_Thread.cpp: Status variable definitions **Next Steps:** - Add unit tests for each detection method - Add integration tests with sample attacks - Add user and developer documentation Related: Phase 1-2 (NL2SQL foundation and testing) Related: Phase 4 (Vector storage for embeddings)	3 months ago
Rene Cannao	bc4fff12ce	feat: Add NL2SQL query interception in MySQL_Session ... - Add NL2SQL handler declaration - Add routing for 'NL2SQL:' prefix - Return resultset with generated SQL and metadata	3 months ago
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	3 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	3 months ago
Rene Cannao	8405027124	Integrate GenAI async event handling into main MySQL session loop ... - Add check_genai_events() function for non-blocking epoll_wait on GenAI response fds - Integrate GenAI event checking into main handler() WAITING_CLIENT_DATA case - Add goto handler_again to process multiple GenAI responses in one iteration The async GenAI architecture is now fully integrated. MySQL threads no longer block when processing GENAI: queries - they send requests asynchronously via socketpair and continue processing other queries while GenAI workers handle the embedding/reranking operations.	3 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.	3 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)	3 months ago
Rene Cannao	cc3e97b7b8	Merge EMBED and RERANK into unified GENAI: query syntax ... This commit refactors the experimental GenAI query syntax to use a single GENAI: keyword with type-based operations instead of separate EMBED: and RERANK: keywords. Changes: - Replace EMBED: and RERANK: detection with unified GENAI: detection - Merge genai_embedding and genai_rerank handlers into single genai handler - Add 'type' field to operation JSON ("embed" or "rerank") - Add 'columns' field for rerank operation (2 or 3, default 3) - columns=2: Returns only index and score - columns=3: Returns index, score, and document (default) Old syntax: EMBED: ["doc1", "doc2"] RERANK: {"query": "...", "documents": [...], "top_n": 5} New syntax: GENAI: {"type": "embed", "documents": ["doc1", "doc2"]} GENAI: {"type": "rerank", "query": "...", "documents": [...], "top_n": 5, "columns": 2} This provides a cleaner, more extensible API for future GenAI operations.	3 months ago
Rene Cannao	39939f598b	Add experimental GenAI RERANK: query support for MySQL ... This commit adds experimental support for reranking documents directly from MySQL queries using a special RERANK: syntax. Changes: - Add handler___status_WAITING_CLIENT_DATA___STATE_SLEEP___MYSQL_COM_QUERY___genai_rerank() - Add RERANK: query detection alongside EMBED: detection - Implement JSON parsing for query, documents array, and optional top_n - Build resultset with index, score, and document columns - Use MySQL ERR_Packet for error handling Query format: RERANK: {"query": "search query", "documents": ["doc1", "doc2", ...], "top_n": 5} Result format: 1 row per result, 3 columns (index, score, document)	3 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.	3 months ago
Rene Cannao	fc73ec1c50	Code review improvements: Add enum and refactor SELECT VERSION() handling ... - Add SelectVersionForwardingMode enum to replace magic numbers (0,1,2,3) - Refactor modes 2 and 3 to eliminate code duplication - Improve code readability and maintainability Addresses feedback from gemini-code-assist on PR #5277	3 months ago
Rene Cannao	366164ab26	Fix #5272: Add mysql-select_version_forwarding variable for SELECT VERSION() ... Since ProxySQL 3.0.4, SELECT VERSION() queries were intercepted and returned ProxySQL's mysql-server_version variable instead of proxying to backends. This broke SQLAlchemy for MariaDB which expects "MariaDB" in the version string. This commit adds a new variable `mysql-select_version_forwarding` with 4 modes: - 0 = never: Always return ProxySQL's version (3.0.4+ behavior) - 1 = always: Always proxy to backend (3.0.3 behavior) - 2 = smart (fallback to 0): Try backend connection, else ProxySQL version - 3 = smart (fallback to 1): Try backend connection, else proxy (default) The implementation includes: - New global variable mysql_thread___select_version_forwarding - New function get_backend_version_for_hostgroup() to peek at backend connection versions without removing them from the pool - Modified SELECT VERSION() handler to support all 4 modes - ProxySQL backend detection to avoid recursion Mode 3 (default) ensures SQLAlchemy always gets the real MariaDB version string while maintaining fast response when connections are available.	3 months ago
Javier Jaramago Fernández	5c8a32a0b0	Merge branch 'v3.0' of github.com:sysown/proxysql into v3.0-handle_unexp_ping	4 months ago
Javier Jaramago Fernández	6fea828e86	Improve logging in unexpected COM_PING packet handling ... Logging messages now include 'client address', 'session status' and 'data stream status'. Client address is also logged when OK packets are dispatched, this should help tracking if a client has received the expected packets or not.	4 months ago
René Cannaò	0f7ff1f374	Merge branch 'v3.0' into v3.0_pgsql-query-digest-gen-5253 ... Signed-off-by: René Cannaò <rene@proxysql.com>	4 months ago
Javier Jaramago Fernández	d0e88599ee	Add special handling for unexpected COM_PING packets ... Implements a workaround for the handling of unexpected 'COM_PING' packets received during query processing, while a resultset is yet being streamed to the client. Received 'COM_PING' packets are queued in the form of a counter. This counter is later used to sent the corresponding number of 'OK' packets to the client after 'MySQL_Session' has finished processing the current query.	4 months ago
René Cannaò	6ee087c73c	Merge pull request #5250 from sysown/v3.0-issue5248 ... Fix cache_empty_result=0 not caching non-empty resultsets (issue #5248)	4 months ago
Rahim Kanji	42864e8867	Improved Tokenizer for PostgreSQL ... - Added `process_pg_typecast()` to handle PostgreSQL type cast syntax (::) - Recognizes type casts in various contexts: 'value'::type, column::type, etc. - Added `process_array_literal()` for PostgreSQL array processing - Handles both ARRAY[] constructor and {} literal syntax - Processes multi-dimensional arrays and nested array structures - Added `process_literal_prefix_type()` for PostgreSQL prefixed literals - Processes E'' escape string constants with backslash escapes - Handles U&'' Unicode string literals with optional UESCAPE clauses - Supports x'' hex string literals and b'' bit string literals - Manages B'' bit strings and bytea literals (\\xDEADBEEF format) - Added `process_replace_boolean()` for boolean literal replacement - Replaces TRUE and FALSE literals with parameter placeholders - Maintains case-insensitive matching (true, True, TRUE, etc.) - Preserves boolean context in expressions and WHERE clauses	4 months ago
Rene Cannao	2987242d4f	Fix cache_empty_result=0 not caching non-empty resultsets (issue #5248) ... The `cache_empty_result` field in query rules has three possible values: • -1: Use global setting (`query_cache_stores_empty_result`) • 0: Do NOT cache empty resultsets, but cache non-empty resultsets • 1: Always cache resultsets (both empty and non-empty) Previously, when `cache_empty_result` was set to 0, nothing was cached at all, even for non-empty resultsets. This prevented users from disabling caching for empty resultsets while still allowing caching of non-empty resultsets on a per-rule basis. Changes: 1. Modified caching logic in MySQL_Session.cpp and PgSQL_Session.cpp to add the condition `(qpo->cache_empty_result == 0 && MyRS->num_rows)` (MySQL) and `(qpo->cache_empty_result == 0 && num_rows)` (PgSQL) to allow caching when cache_empty_result=0 AND result has rows. 2. Added comprehensive Doxygen documentation in query_processor.h explaining the semantics of cache_empty_result values. 3. Updated Query_Processor.cpp with inline comments explaining the three possible values. Now when cache_empty_result is set to 0: - Empty resultsets (0 rows) are NOT cached - Non-empty resultsets (>0 rows) ARE cached - This matches the intended per-rule behavior described in issue #5248. Fixes: https://github.com/sysown/proxysql/issues/5248	4 months ago
René Cannaò	5a314d2364	Merge pull request #4889 from sysown/v3.0_get_server_version ... Added handling of SELECT @@version and SELECT VERSION() without backend	4 months ago
Rene Cannao	5a7b22181f	Fix metrics collection for wait_timeout counters ... The get_status_variable() function was only scanning worker threads but ignoring auxiliary threads (idle threads) where timeout terminations are detected. This caused the timeout termination counter to show incorrect/zero values. - Added idle thread scanning to both overloaded versions of get_status_variable() function - Now properly collects metrics from both worker and idle threads - Fixes the issue where proxysql_mysql_timeout_terminated_connections_total showed zero despite actual timeout terminations Resolves the metrics reading issue identified in the previous commits.	4 months ago
Rene Cannao	fbf5f2d762	Improve wait_timeout warning messages with detailed connection information ... Enhance logging clarity: - Replace generic IP address with detailed connection info including IP and port - Use client_myds->addr.addr and client_myds->addr.port for precise identification - Improve debuggability of timeout clamping and enforcement warnings The warning messages now provide complete connection details, making it easier to identify and troubleshoot timeout-related issues in ProxySQL logs.	4 months ago
Rene Cannao	0c5e75a064	Fix wait_timeout timeout calculations and add proper newline characters ... Key improvements: - Fix timeout comparison in MySQL_Thread::idle_thread_to_kill_idle_sessions() to prevent underflow - Use effective wait_timeout (minimum of global and session values) for idle timeout calculations - Add proper newline characters to proxy_warning messages for consistent log formatting - Increase test sleep times to account for global timeout enforcement - Fix session timeout test durations to properly test timeout behavior Technical changes: - Replace broken min_idle calculation with proper effective wait_timeout logic - Add std::min() usage to determine effective timeout from global and session values - Ensure warning messages end with newline characters for proper log formatting - Update test sleep durations to ensure proper timeout testing Resolves potential timeout calculation bugs and ensures consistent timeout enforcement behavior.	4 months ago
Rene Cannao	df515f91fa	session: Add wait_timeout to proxysql internal session JSON ... - Include wait_timeout value in session JSON output for monitoring/debugging - Provides visibility into client-configured timeout values	4 months ago
Rene Cannao	0a9dc9dd29	session: Add input validation for client wait_timeout with silent clamping ... - Add range validation for client SET wait_timeout commands - Implement clamping between 1 second (1000ms) and 20 days (1,728,000,000ms) - Add warning messages when values are clamped due to ProxySQL limits - Maintain MySQL compatibility by accepting larger values than global config - Fix signed/unsigned comparison warning in wait_timeout assignment - Ensures client applications don't break while enforcing safety limits	4 months ago
Rene Cannao	86cc7cd3da	session: Fix wait_timeout member variable declaration and usage ... - Add wait_timeout member variable declaration to Base_Session class - Fix constructor initialization to use this->wait_timeout - Fix assignment in handler to properly scope member variable - Resolves compilation error for wait_timeout functionality	4 months ago
René Cannaò	588b0a0ae6	Merge branch 'v3.0' into v3.0_wait_timeout ... Signed-off-by: René Cannaò <rene@proxysql.com>	4 months ago
René Cannaò	199d8bb7f0	Merge branch 'v3.0' into v3.0_get_server_version ... Signed-off-by: René Cannaò <rene@proxysql.com>	4 months ago
Rene Cannao	ee824c0b97	Removing debugging code	5 months ago