72 Commits (cf8cbfd89af57656a4a3253c7d0832ce25728fad)

Author	SHA1	Message	Date
Rahim Kanji	c0f99c0e15	Refactor: Improved Prepared-Statement Cache Design (Lock-Free Hot Path) #5211 ... Concurrency and Memory Management * Lock-Free Ref Counting: Replaced global mutex-protected integer reference counts with `std::atomic<uint32_t>` within `PgSQL_STMT_Global_info`, eliminating lock contention during statement referencing. * Modern Ownership: Adopted std::shared_ptr<const PgSQL_STMT_Global_info> for global and local storage, providing automatic, thread-safe memory and lifecycle management. * Memory Optimization: Removed redundant auxiliary maps `global_id_to_stmt_names` and `map_stmt_id_to_info` from local and global statement managers respectively, reducing overall memory overhead. * Optimized Purging: Statement removal logic was simplified for efficiently identifying and cleaning up unused statements. Hot Path Performance (`BIND`, `DESCRIBE`, `EXECUTE`) * Bypassed Global Lookups: Local session maps now store the `shared_ptr` directly, removing the need to acquire the global lock and search the global map during hot path operations. * Direct Refcount Manipulation: Refcount modification functions now operate directly on the passed statement object, eliminating the overhead of searching the global map to find the object pointer based on statement id. Safety and Protocol Logic (`PARSE`) * Efficient Statement Reuse: Implemented a **local fast path** check for the unnamed statement (`""`), allowing immediate reuse of an identical query (same hash) upon re-parse, which bypasses global processing and locks. Cleanup * Cleaned up and class rename `PgSQL_STMT_Manager_v14` -> `PgSQL_STMT_Manager`.	3 months ago
René Cannaò	abafaccbc0	Merge pull request #5156 from sysown/v3.0_pgsql_stat_activity_issue_4682 ... Add backend_pid and backend_state to stats_pgsql_processlist and create stats_pgsql_stat_activity view	4 months ago
Rahim Kanji	81d4c3ad74	Added get_pg_backend_state	4 months ago
Rahim Kanji	4d91452fc5	Implement backend query cancellation for PostgreSQL #5136 ... Add support for PostgreSQL query cancellation and backend termination features to allow clients to cancel long-running queries and terminate connections through the standard PostgreSQL protocol. Features implemented: - Intercept pg_backend_pid() queries and return ProxySQL session thread ID - Intercept pg_terminate_backend() to terminate client connections asynchronously - Intercept pg_cancel_backend() to cancel queries on backend connections - Support Cancel Request protocol via separate connection with PID and secret key validation - Return BackendKeyData message on successful authentication with session thread ID and unique cancel secret key This enables clients to use standard PostgreSQL cancellation mechanisms (pg_cancel_backend, pg_terminate_backend, and Cancel Request protocol) while ProxySQL maintains proper session isolation and maps client requests to appropriate backend connections.	5 months ago
Rahim Kanji	23a764eaac	Preserve implicit transactions with pipeline + FLUSH #5118 ... Previously, each extended-query block was terminated with a SYNC, which caused implicit transactions to commit prematurely. As a result, earlier write operations (INSERT/UPDATE/DELETE) could not be rolled back if a later statement in the same sequence failed. This change switches to libpq pipeline mode and replaces intermediate SYNC messages with FLUSH, ensuring that all client query frames execute as part of the same implicit transaction. A final SYNC is still issued to resynchronize the connection and make it safe for reuse in the pool.	5 months ago
Rahim Kanji	031d362aab	Add STMT prefix to ASYC DESCRIBE status	6 months ago
Rahim Kanji	7d5fe54230	Refactor: unify result handling for Parse and Describe ... Previously, Parse and Describe each had their own query result handling paths. This duplicated a lot of logic and also failed to handle some cases correctly—for example, Notice messages returned by the server during extended-protocol queries. Keeping these separate paths would be hard to maintain and prone to bugs. The simple-query result handling is already mature, optimized, and covers all the necessary cases. Reusing it for Parse and Describe makes behavior consistent across simple and extended query flows, while also reducing duplicate code.	6 months ago
Rahim Kanji	abd19113c0	Fix RequestEnd: avoid updating internal state when query failed on backend ... RequestEnd was applying state changes (session variable restore, rollback-to-savepoint, multiplexing toggle for temp tables/sequences) even when the query failed to execute on the backend connection. This caused internal state to diverge from the actual backend state. Fix: - Add success/failure flag to RequestEnd calls. - Restrict state-changing logic to Simple Query and Prepared Execute. - Ensure logic only runs when the query executed successfully on backend. This keeps internal state aligned with the backend connection state.	6 months ago
Rahim Kanji	2d569f3b95	Added support to terminate running queries on timeout	6 months ago
Rahim Kanji	0ddc6e9b93	* Implemented status tracking for LOCK TABLE and pg_advisory_xact_lock, with automatic reset on transaction end ... * Added tracking for pg_advisory_lock, with status reset only on pg_advisory_unlock_all * Implemented support for CREATE SEQUENCE and CREATE TEMP SEQUENCE, with reset on DISCARD SEQUENCES * Added handling for CREATE TEMP TABLE, with reset triggered by DISCARD TEMP	7 months ago
Rahim Kanji	4d195adc89	Renamed Multiplex status from MYSQL to PGSQL ... Renamed status to ssl_status Removed STATE_SLEEP_MULTI_PACKET from PgSQL session handler	7 months ago
Rahim Kanji	ce94a7080a	Merge branch v3.0_session_param_reset_connection into v3.0_extended_query_protocol	7 months ago
Rahim Kanji	249b3d8725	* Replace C-style array with std::array in PgSQL_Connection ... * Nulling startup_parameters[i] in ~PgSQL_Connection after freeing	7 months ago
Rahim Kanji	1bcd09044b	Refactor Connection Reset Handling ... * Introduced startup parameters in PgSQL_Connection (removed default session parameters from PgSQL_Session) * Startup parameters are populated during both frontend and backend connection creation * Parameters provided via connection options are set as startup parameters * Backend connection parameter handling updated: only critical variables are now set via connection options to prevent interference with DISCARD ALL during connection reset; remaining parameters will be applied using individual SET commands	7 months ago
Rahim Kanji	87ad15b01c	* Removed autocommit_on_hostgroup from PostgreSQL modules ... * Introduced an error generator method to reduce code duplication * Added several comments for clarity * Addressed edge cases related to libpq limitations	7 months ago
Rahim Kanji	48ba491cb7	Add support for unnamed Describe Portal and improve extended query handling ... - Always send Describe Portal to the backend - Enforce check for unnamed portals in Bind, Describe, Close, and Execute; raise errors for named portals - Improve error handling for extended query flow - Introduce Extended_Query_Info struct to unify extended query-related members and reduce redundancy	8 months ago
Rahim Kanji	7cde1dcad6	Added comments	8 months ago
Rahim Kanji	f9448948cd	Set end state for fetch result to indicate that it originates from a simple query or statement execution	8 months ago
Rahim Kanji	3cff4f9dca	* Added sticky backend support for extended query frames: all messages in a single frame will now use the same backend connection. ... * Fixed few compilation warnings. * Removed AutoCommit relate code from PostgreSQL session.	8 months ago
Rahim Kanji	8bb248cef5	Added Bind and Execute support	8 months ago
Rahim Kanji	a741598a8d	Added Describe message handling	8 months ago
Rahim Kanji	2a9f67295f	Removed warning tracking code from PgSQL_Connection	8 months ago
Rahim Kanji	58c18846c8	Added set_is_client method	8 months ago
Rahim Kanji	24fecc1f6e	Add PostgreSQL extended query (prepared statement) support in ProxySQL ... This commit lays the groundwork for handling PostgreSQL’s extended query protocol (prepared statements) by introducing parsing, it's caching and execution framework stubs. - Implement Parse handling - Implement caching of parse (reuse) - Introduce Execute framework stub for future binding and execution logic.	8 months ago
Rahim Kanji	d5451970dc	Added comments	9 months ago
Rahim Kanji	700e8c21ae	Switched PQ error verbosity to formatted mode. ... Implemented a parser to handle the new format.	9 months ago
Rahim Kanji	d90bf4ac73	Optimized savepoint detection ... Added get_pg_parameter_status	10 months ago
Rahim Kanji	8a5dfc2ecb	Added comment	11 months ago
Rahim Kanji	db442ba8cf	Treat client_encoding as normal server parameter/variable. ... Optimized RESET ALL command handling. Few optimizations. Code cleanup	11 months ago
Rahim Kanji	fbb9500cb9	Refactored connection parameters ... * Accept all parameters sent by the client, mirroring PostgreSQL's permissive handling. * Validate and apply parameters only after successful authentication. This avoids wasting resources on invalid connections.	11 months ago
Rahim Kanji	40be1158c2	Finally removed PgSQL_Connection_Placeholder class	1 year ago
Rahim Kanji	570e62b618	Removed MySQL Prepare Statement residual code	1 year ago
Rahim Kanji	ac64bd5d21	Removed leftover MySQL prepared statement code	1 year ago
Rahim Kanji	a22936164b	Removed psql from PgSQL_Connection_Placeholder ... Removed dead code Removed MySQL Prepare Statement related code lib/PgSQL_Session.cpp # # Untracked files: # .gitattributes # .vs/ # PR_proxysql_postg.txt # include/query_cache - Copy.hpp # lib/Query_Cache - Copy.cpp # tash qqq # test/tap/tests/pgsql-basic_tests-t - Copy.cpp # test/tap/tests/pgsql-connection_test-t.cpp # test/tap/tests/pgsql-set_parameter_test-t.cpp #	1 year ago
Rahim Kanji	0e83dd9896	Moved more data members and methods to PgSQL_Connection class	1 year ago
Rahim Kanji	bcc20f8214	Moved few members and methods to PgSQL_Connection ... Removed deadcode	1 year ago
Rahim Kanji	f6fb8bbf2e	Moved connected_host_details struct to PgSQL_Connection	1 year ago
Rahim Kanji	1bb8d55fc6	Moved PgSQL_Variable and related methods from ... PgSQL_Connection_Placeholder to PgSQL_Connection	1 year ago
Rahim Kanji	99d9708eeb	Removed dead code	1 year ago
Rahim Kanji	3dcc015d28	Code cleanup ... * Removed async_set_autocommit	1 year ago
Rahim Kanji	7e9d6d1ed1	Code cleanup ... * Removed async_set_names * Removed async_set_option * Removed dead code	1 year ago
Rahim Kanji	094ad7bb44	Code cleanup	1 year ago
Rahim Kanji	06e496b7c3	Added tracking of parameters: ... * client_encoding/names * datestyle * timezone/time zone * standard_conforming_strings	1 year ago
Rahim Kanji	31ed94e82e	* Added async_send_simple_command: This method is introduced to execute ... SET statements on the backend. * Added set_charset: Manage character set configuration. * Added connect_start_SetCharset: Enables character set initialization during the connection start process.	1 year ago
Rahim Kanji	f16f553995	Added PostgreSQL notice handler	1 year ago
Rahim Kanji	c4a8b0ec9b	Added FAST FORWARD support for PostgreSQL	1 year ago
Rahim Kanji	616a8e0e23	Implemented handling of COPY OUT ... Added threshold checks to manage result size	1 year ago
Rahim Kanji	4faeb163a0	Added Environment Options	1 year ago
René Cannaò	115eef2ea3	Some code cleanup	1 year ago
Javier Jaramago Fernández	25c6cf9dff	Fix 'nlohmann::json' type forwarding	1 year ago